Solid State Logic Stereo Amplifier 82S6XL020E User Manual

Super Analogue Mic Amp  
Owner’s Manual  
 
Solid State Logic  
S U P E R A N A L O G U E  
M I C A M P  
Super-Analogue™ Outboard  
Owner’s Manual  
82S6XL020E  
 
XLogic Mic Amp Owner’s Manual  
Solid State Logic  
Begbroke, Oxford, England, OX5 1RU • +44 (0)1865 842300  
320 West 46th Street, 2nd Floor, New York, NY 10036, USA • +1 (1) 212 315 1111  
Suite 401, 5757 Wilshire Blvd, Los Angeles, CA 90036, USA • +1 (1) 323 549 9090  
3-55-14 Sendagaya, Shibuya-Ku, Tokyo 151-0051, Japan • +81 (0)3 5474 1144  
7 bis, rue de la Victoire, le Blanc Mesnil, Paris 93150, France • +33 (0)1 48 67 84 85  
Via Timavo 34, 20124 Milano, Italy • +39 (0)39 2328 094  
© Solid State Logic  
All Rights reserved under International and Pan-American Copyright Conventions  
Solid State Logic, SSL and XLogic are trademarks of Solid State Logic  
All other product names and trademarks are the property of their respective owners  
No part of this publication may be reproduced in any form or  
by any means, whether mechanical or electronic, without the  
written permission of Solid State Logic, Oxford, England  
Revision 0A, September 2003  
Revision 0B, December 2003  
Revision 0C, January 2004  
Revision 0D, June 2004  
Revision 0E, July 2004  
Minor changes, November 2004  
Minor changes, June 2005  
As research and development is a continual process, Solid State Logic reserves the right  
to change the features and specifications described herein without notice or obligation  
E&OE  
 
Contents  
1.0 Introduction  
3
2.0 Safety Considerations  
Safety Warnings  
4
4
3.0 Installation  
7
7
7
Setting the mains voltage selector  
Mounting  
Standalone Operation  
7
Connecting to XL 9000 consoles  
Connecting to XLogic Remote Control unit  
Configuring the unit  
9
11  
13  
4.0 Operation  
Appendices:  
15  
A
Internal Links and Fuses  
Test Mode  
Connector Details  
Electronic Specification  
Calibration Information  
Physical Specification  
Environmental Specification  
17  
17  
18  
24  
26  
27  
27  
B
C
D
E
F
Page 1  
 
XLogic Mic Amp Owner’s Manual  
oigc  
ogic  
XL  
XL  
Page 2  
 
Introduction  
1.0 Introduction  
The XLogic Mic Amp is a 1U rack mounting unit containing four ultra high quality microphone amplifiers,  
utilising SSL’s Super Analogue technology. The unit can be controlled either locally, from the XLogic Mic Amp  
Remote Control or from an XL 9000 console, allowing the mic amp to be placed close to the microphone in order  
to eliminate the signal degradation caused by long mic cables.  
The object of this manual is to provide purchasers of the XLogic Mic Amp with information in the following  
areas:  
• Safety considerations  
• Installation requirement  
• Electrical connections and cabling  
• Connector pin-outs  
• Specifications and physical dimensions  
Warranty  
The warranty period for this unit is 12 months from date of purchase.  
In Warranty Repairs  
In the event of a fault during the warranty period the unit must be returned to your local distributor who will  
arrange for it to be shipped to Solid State Logic for repair. All units should be shipped to Solid State Logic in their  
original packaging. Solid State Logic can not be held responsible for any damage caused by shipping units in  
other packaging. In such cases Solid State Logic will return the unit in a suitable box, which you will be charged  
for. Please do not send manuals, power leads or any other cables - Solid State Logic can not guarantee to return  
them to you. Please also note that warranty returns will only be accepted as such if accompanied by a copy of  
the receipt or other proof of purchase.  
Out of Warranty Repairs  
In the event of a fault after the warranty period has expired, return the unit in its original packaging to your local  
distributor for shipment to Solid State Logic. You will be charged for the time spent on the repair (at Solid State  
Logic's current repair rate) plus the cost of parts and shipping.  
Page 3  
 
XLogic Mic Amp Owner’s Manual  
2.0 Safety considerations  
This section contains definitions and warnings, and practical information to ensure a safe working environment.  
Please take time to read this section before undertaking any installation work.  
2.1 Definitions  
‘Maintenance’  
All maintenance must be carried out by fully trained personnel. Note: it is advisable to observe suitable ESD  
precautions when maintenance to any part is undertaken.  
‘Non-User Adjustments’  
Adjustments or alterations to the equipment may affect the performance such that safety and/or international  
compliance standards may no longer be met. Any such adjustments must therefore only be carried out by fully  
trained personnel.  
‘Users’  
This equipment is designed for use solely by engineers and competent operators skilled in the use of professional  
audio equipment.  
‘Environment’  
This product is a Class A product intended to form an integrated component part of a professional audio  
recording, mixing, dubbing, film, TV, radio broadcast or similar studio wherein it will perform to specification  
providing that it is installed according to professional practice.  
2.2 Electrical Safety Warning  
When installing or servicing any item of Solid State Logic equipment with power applied, when cover  
panels are removed, HAZARDOUS CONDITIONS CAN EXIST.  
These hazards include:  
High voltages  
High energy stored in capacitors  
High currents available from DC power busses  
Hot component surfaces  
Any metal jewellery (watches, bracelets, neck-chains and rings) that could inadvertently come into contact  
with uninsulated parts should always be removed before reaching inside powered equipment.  
2.3 Installation  
Voltage Selection and Fusing  
All XLogic units have selectable voltage inlets. Always confirm that the input mains voltage range is set correctly  
before applying power. Always isolate the mains supply before changing the input range setting.  
If it is ever necessary to replace a blown mains-fuse, then always use the correct rating and type of replacement.  
If a correctly rated fuse continues to blow, then a fault exists and the cause should be investigated or the unit  
returned to Solid State Logic for repair/replacement as appropriate.  
Details of mains settings and correct fuse ratings can be found in Section 3.1 and Appendix A of this manual.  
Safety Earth Connection  
Any mains powered item of Solid State Logic equipment that is supplied with a 3-core mains lead (whether  
connectorised or not) should always have the earth wire connected to the mains supply ground. This is the safety  
earth and grounds the exposed metal parts of the racks and cases and should not be removed for any reason.  
Page 4  
 
Safety Considerations  
Mains Supply and Phases  
Solid State Logic equipment is designed for connection to single phase supplies with the Neutral conductor at  
earth potential - category TN - and is fitted with a protective fuse in the Live conductor only. It is not designed  
for use with Phase (Live) and Neutral connections reversed or where the Neutral conductor is not at earth  
potential (TT or IT supplies).  
Mains cables will be coded with the following colour scheme:  
LIVE:  
Brown  
NEUTRAL:  
EARTH:  
Blue  
Yellow/Green  
Mains Isolation and Over-Current Protection  
An external disconnect device is required for this equipment which must be installed according to current wiring  
regulations. A detachable power cord, as fitted to this equipment, is a suitable disconnect device.  
An external over-current protection device is required to protect the wiring to this equipment which must be  
installed according to the current wiring regulations. The fusing or breaking-current are defined in the product  
specification. In certain countries this function is supplied by use of a fused plug.  
CE Certification  
Note that the majority of cables supplied with SSL equipment are fitted with ferrite rings at each end. This is to  
comply with current European CE regulations and these ferrites should not be removed.  
If any of the unit metalwork is modified in any way this may the adversely affect the CE certification status of  
the product.  
FCC Certification  
The XLogic unit has been tested and found to comply with the limits for a Class A digital device, pursuant to  
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference  
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate  
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause  
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause  
harmful interference in which case the user will be required to correct the interference at his own expense.  
Page 5  
 
XLogic Mic Amp Owner’s Manual  
100V  
120V  
230V  
240V  
Mains Input Module  
2 4 0  
1 2 0  
2 3 0  
1 0 0  
100  
120  
230  
240  
100V Setting  
(Use for 90-105V)  
120V Setting  
(Use for 105-125V)  
240V Setting  
(Use for 220-240V)  
230V Setting  
(Do not use)  
Mains Input Programming PCB  
These diagrams show the PCB arrangements for the different voltage settings.  
Note that where the mains voltage is a nominal 230V, the ‘240V Setting’ should be used – not the ‘230V Setting’!  
Page 6  
 
Installation  
3.0 Installation  
3.1 Voltage Selection  
Before connecting the mains supply ensure that the voltage range selector next to the IEC socket on the rear of  
the unit is correctly set. The input setting must be confirmed before applying power. The input module can be  
configured to be one of 4 voltage settings. The setting is indicated by a plastic pin protruding through the  
appropriate hole in the fuse panel.  
The setting is altered by a small vertical PCB which can be fitted in 4 positions.  
To change the setting:  
Switch off and remove the IEC lead.  
Using a small flat-bladed screwdriver, lever open the fuse panel to the right of the connector.  
At the right hand side is a vertical PCB with a plastic key which indicates the setting. Using pliers, pull  
out the PCB.  
The PCB has to be rotated until the desired voltage is shown along the edge which plugs into the module.  
The plastic key (and this bit is quite fiddly) must also be rotated so that it points out of the module and so  
that the round pin aligns with the appropriate hole in the cover panel; (refer to the diagrams opposite).  
Re-insert the PCB and replace the fuse panel. The plastic pin should project through the appropriate hole.  
3.2 Mounting  
The XLogic unit is designed to be rack mounted. It is 1RU (44.5mm/1.75 inch) high. Its depth is:  
325 mm/12.8 inches not including heatsink  
365 mm/14.3 inches including heatsink  
400 mm/15.75 inches including connectors  
Please note that the rack ears of early XLogic Mic Amp units are not capable of supporting the full weight of the  
unit. Therefore if the unit is to be rack-mounted, it must either be mounted on suitable rack shelves or be fitted  
with a pair of support brackets to reinforce the rack ears – do not rely on just the basic front panel for rack-mounting  
the unit. Later XLogic Mic Amp units incorporate reinforcement brackets into the chassis and so are suitable for  
direct rack-mounting. Should your unit require them, pairs of support brackets (SSL Part No.: 629943XR) are  
available from your local distributor.  
A 1RU space must be left above each unit to ensure adequate ventilation.  
3.3 Standalone Operation  
Before mounting the unit in the rack check that the front panel displays are correct by powering up the unit.  
Section 3.6 describes how to set the displays for your installation.  
If several units are to be mounted in the same rack then the headphone monitor and talkback bus should be  
connected between the units by connecting the ‘MON IN’ and ‘MON OUT’ connectors on adjacent units, using  
the supplied RJ11-RJ11 cable (SSL Part No.66C67240).  
The headphone output monitors any channel selected to ‘MON’ plus an external talkback input. The talkback  
input can be connected to a line level console talkback output if required. This signal is bussed between units on  
the monitor link cables. Use an RJ11 to female XLR adaptor (SSL Part No. 66C67241) to connect talkback to a free  
MON IN or MON OUT connector. One adaptor cable is supplied with each unit.  
Once these connection have been made apply power to the unit(s). Ensure that the yellow ‘REMOTE’ LED on  
the right of the front panel is not lit. If it is lit, use a small screwdriver or similar to turn off the recessed  
‘REMOTE’ switch below the LED. Finally connect the male XLR connectors on the rear of the unit to the line level  
inputs of your console or recorder and your microphones to the XLR inputs on the front of the unit.  
Page 7  
 
XLogic Mic Amp Owner’s Manual  
Console Wiring Diagram  
Page 8  
 
Installation  
3.4 Connection to XL 9000 Consoles  
Remote mic amp prewiring has been fitted to many, but not all XL 9000 consoles. In many cases only a small  
number of channels have been wired. Check which (if any) bays of the console have been prewired for remote  
mic amps. Wiring can be retrofitted to any XL 9000 console if required - contact your local office or distributor  
for more information. The prewiring comprises two parts – two control signals from each channel plus a relay  
card that automatically switches the channel line input to the output of the XLogic Mic Amp.  
Connection to an XL 9000 console is made from the 25 way ‘D’ type connector on the rear of the unit. This carries  
both audio and control signals. Depending on the age of the console the audio inputs and control outputs will  
either be on 96 pin Canon DL connectors (which were used on the original 24 channel ‘SuperPre’ mic amp) which  
have 24 circuits of audio and control on separate connectors, or on 25 way ‘D’ type male connectors with the  
same pin out as the Mic Amp unit. If the console if wired with DL connectors then a DL to 25 way ‘D’ type male  
adaptor cable will be required.  
Interconnecting cables may be ordered from Solid State Logic or supplied by the facility. See the block diagrams  
opposite. Appendix B contains pinouts for all connectors. Appendix B also includes wiring information to build  
an adaptor cable to connect the audio and control DLs to 25 way ‘D’ type connectors.  
The cable used should be 8 pair individually jacketed multicore with an overall screen such as Belden 1512C.  
Connectors should have metal or metallised covers. Connect the overall shield to the connector cover at both  
ends.  
If several units are to be mounted in the same rack then the headphone monitor and talkback bus should be  
connected between the units by connecting the ‘MON IN’ and ‘MON OUT’ connectors on adjacent units, using  
the supplied RJ11-RJ11 cable (SSL Part No.66C67240).  
The headphone output monitors any channel selected to ‘MON’ plus an external talkback input. The talkback  
input can be connected to a line level console talkback output if required. This signal is bussed between units on  
the monitor link cables. Use an RJ11 to female XLR adaptor (SSL Part No. 66C67241) to connect talkback to a free  
MON IN or MON OUT connector. One adaptor cable is supplied with each unit.  
Once these connection have been made apply power to the unit(s). Ensure that the yellow ‘REMOTE’ LED on  
the right of the front panel is lit. If it is not lit use a small screwdriver or similar to turn on the recessed ‘REMOTE’  
switch below the LED.  
Finally check that:  
• The channel number displays on the front of the unit match the numbers of the channels the unit is  
connected to.  
• When you pull up the Mic Gain controls on the connected channels the ‘MIC’ LED changes colour from  
red to green.  
• The motorised pots and the remote controlled switches (48V, PAD and Hi-Z) operate correctly from the  
XL 9000 when ‘Remote’ is selected and that they can be controlled locally when ‘Remote’ is not selected.  
• When you connect a microphone to the Mic Amp input signal appears on the input of the correct channel  
of the console.  
Page 9  
 
XLogic Mic Amp Owner’s Manual  
Remote Control Wiring Diagram  
Page 10  
 
Installation  
3.5 Connection to XLogic Mic Amp Remote  
The XLogic Mic Amp Remote (see drawing on page 2) is a 1U panel, approximately 100mm deep. Each unit will  
control one or two XLogic Mic Amp units (eight channels in total). It connects to each XLogic Mic Amp by two  
shielded RJ45 cables and is powered from the XLogic Mic Amp. Four 20 metre cables are supplied with each  
remote unit. These cables can be extended up to a maximum length of 100 metres using standard shielded Cat  
5 network cable(s) with a minimum conductor size of 26AWG. Use of 24AWG cable allows the cable to be  
extended to a maximum of 200 metres. To ensure compliance with EU EMC regulations Solid State Logic  
recommend fitting a ferrite bead close to each end of the cable.  
Note that these cables carry +12 volts to power the remote unit and must not be connected to your ethernet network. Serious  
damage to the ethernet repeater may result if this is done.  
If several units are to be mounted in the same rack then the headphone monitor and talkback bus should be  
connected between the units by connecting the ‘MON IN’ and ‘MON OUT’ connectors on adjacent units, using  
the supplied RJ11-RJ11 cable (SSL Part No.66C67240). The drawing in Section 3.5 shows this.  
The headphone output monitors any channel selected to ‘MON’ plus an external talkback input. The talkback  
input can be connected to a line level console talkback output if required. This signal is bussed between units on  
the monitor link cables. Use an RJ11 to female XLR adaptor (SSL Part No. 66C67241) to connect talkback to a free  
MON IN or MON OUT connector. One adaptor cable is supplied with each unit.  
Once these connection have been made apply power to the unit(s). Ensure that the yellow ‘REMOTE’ LED on  
the right of the front panel is on. If it is off use a small screwdriver or similar to turn on the recessed ‘REMOTE’  
switch below the LED.  
Check that the motorised pots and the remote controlled switches (Phase, –20dB and Hi-Z) operate correctly  
from the Mic Amp Remote control unit when ‘REMOTE’ is selected and that they can be controlled locally when  
‘REMOTE’ is not selected.  
Finally connect the male XLR connectors on the rear of the unit to the line level inputs of your console or recorder  
and your microphones to the XLR inputs on the front of the unit.  
Page 11  
 
XLogic Mic Amp Owner’s Manual  
Table 1: Channel Display Setting - Normal Operation  
Channel  
LK5  
BCD Switch  
Front Panel Displays  
Address *  
Position  
Setting  
Display 1  
DP  
1
Display 2  
DP  
2
Display 3  
DP  
3
Display 4  
DP  
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
0
1
2
5
6
7
8
3
9
10  
11  
12  
4
13  
14  
15  
16  
5
17  
18  
19  
20  
6
21  
22  
23  
24  
7
25  
26  
27  
28  
8
29  
30  
31  
32  
9
33  
34  
35  
36  
A
B
C
D
E
F
0
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
1
65  
66  
67  
68  
2
69  
70  
71  
72  
3
73  
74  
75  
76  
4
77  
78  
79  
80  
5
81  
82  
83  
84  
6
85  
86  
87  
88  
7
89  
90  
91  
92  
8
93  
94  
95  
96  
9
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
DP  
A
B
C
D
E
F
Note: 'DP' - decimal point  
* Pull address pins marked '1' to 0V to enable.  
Page 12  
 
Configuration  
3.6 Configuring the XLogic Mic Amp  
There are a number of internal link settings, most of which should not normally require adjustment – see  
Appendix A for a full listing. Those links that change the operation of the unit are described below.  
Setting the Channel Displays  
If the unit is connected to an XL 9000 console the 5 address bits on the 25 way ‘D’ type Audio/Control connector  
are set on the console channel bus card so that the channel displays automatically show the channels the unit is  
connected to.  
When controlled locally or from the XLogic Mic Amp Remote  
control unit, the channel displays can be set by adjusting a rotary  
switch that is accessible through the lid of the case – see the  
drawing to the right. The rotary switch has 16 positions, allowing  
the front panel display to show channel numbers in the range 1  
to 60. To display channel numbers above 60 the internal jumper  
LK5 (screened BIT 5) should be moved to position ‘b’.  
25-28/85-88  
21-24/81-84  
17-20/77-80  
13-16/73-76  
9-12/69-72  
29-32/89-92  
33-36/93-96  
37-40  
41-44  
45-48  
49-52  
53-56  
57-60  
5-8/65-68  
1-4/61-64  
0
To perform this adjustment, make a note of the front panel  
displays, power-down the unit and insert a thin flat bladed  
screwdriver. Referring to both the screening on the top cover and  
to Table 1. opposite, set the switch as required. Remove the  
screwdriver and re-apply power.  
Note that the rotary switch position is ignored if the unit is connected to an XL 9000 console but that LK5 will  
always increase the displayed number by 60 when set to position ‘b’.  
Note. It is recommended that this adjustment is not performed with power applied as a mis-placed screwdriver can cause  
damage to the XLogic Mic Amp!  
Changing the Remote +48V and Phase Switch Functions  
If the unit is to be controlled from an XLogic Mic Amp Remote control unit then the phantom power selection is  
normally made from the Mic Amp front panel and phase is remote controlled. If the unit is to be controlled from  
an XL 9000 then phase is normally controlled from the Mic Amp front panel and phantom power is controlled  
from the console. This selection is automatic – the unit detects if any of the address inputs on the Audio/Control  
25 way ‘D’ type connector are connected to ground and selects ‘XL’ mode accordingly. The selection can be  
reversed by moving the internal jumper LK6 (screened PHAS/PHAN) to position ‘b’.  
Page 13  
 
XLogic Mic Amp Owner’s Manual  
DC Control  
from Console  
PIC Controller  
Channel 1  
25wD  
REM  
+48V  
PHANTOM  
POWER  
RST  
RST  
RST  
DC Control  
from remote  
RJ45 -1  
MIC  
TRIM  
Ø
MON  
MON  
MON  
+18 — +78dB  
+48V  
-20dB  
Hi-Z  
25wD  
+
-
PIC Controller  
Channel 2  
DC Control  
from Console  
25wD  
REM  
+48V  
PHANTOM  
POWER  
DC Control  
from remote  
RJ45 -1  
MIC  
TRIM  
Ø
+18 — +78dB  
+48V  
-20dB  
Hi-Z  
25wD  
+
-
PIC Controller  
Channel 3  
DC Control  
from Console  
25wD  
REM  
+48V  
PHANTOM  
POWER  
DC Control  
from remote  
RJ45 -2  
MIC  
TRIM  
Ø
+18 — +78dB  
+48V  
-20dB  
Hi-Z  
25wD  
+
-
DC Control  
from Console  
PIC Controller  
Channel 4  
25wD  
REM  
+48V  
RST  
PHANTOM  
POWER  
DC Control  
from remote  
RJ45 -2  
MIC  
TRIM  
Ø
MON  
+18 — +78dB  
+48V  
-20dB  
Hi-Z  
25wD  
+
-
+5V  
REMOTE  
25wD  
5
PIC Display  
Controller  
0
E
1
D
2
C
3
B
4
A
5
9
6
8
7
MON IN/MON OUT  
Talkback Input  
Stereo Jack  
Headphone  
amp  
Page 14  
 
Operation  
4.0 Operation  
The XLogic Mic Amp is a 1U rack mounting unit containing four ultra high quality microphone amplifiers,  
utilising Solid State Logic’s Super Analogue technology. The unit can be controlled locally, from the XLogic Mic  
Amp Remote unit or from an XL 9000 console, allowing the mic amp to be placed close the microphone in order  
to eliminate the signal degradation caused by long mic cables.  
The ‘REMOTE’ switch on the right of the front panel (accessible through the hole above the ‘Remote’ LED)  
switches the unit between remote and local modes.  
In local mode all the front panel switches and the microphone gains can be set from  
the front panel of the unit. Note that because of the servo motor and gear box the  
gain control is stiffer than a normal SSL potentiometer. In remote mode the gain  
MONITOR  
controls and three of the front panel switches are controlled from either the XLogic  
Mic Amp Remote unit or an XL 9000 console. The MON switch and either the phase  
or 48V switch remain local. Which switch is local depends on whether the unit is  
REMOTE  
connected to an XL 9000 or to an XLogic Mic Amp Remote unit (and also on the  
position of the internal PHAS/PHAN link – see section 3.6). The XL 9000 normally  
controls 48V, Hi-Z and –20dB switches. The Mic Amp Remote normally controls  
phase, Hi-Z and –20dB switches.  
Please note that connecting a microphone to the XLogic Mic Amp with phantom power switched on is not advised as it may  
cause damage to either the microphone or the input stage of the XLogic Mic Amp.  
Each channel has an XLR input on the front panel. The mic amp gain is controlled by a motorised potentiometer.  
Dedicated switches control phase reverse, phantom power, input impedance and 20dB pad. A dual seven  
segment display shows the channel number. These are set from either an internal BCD switch (accessible through  
the lid of the unit) or by links on the 25 way ‘D’  
type connector on the rear of the unit. XL 9000  
consoles automatically configure the unit to  
show which channels the unit is connected to.  
SIGNAL  
GAIN  
See section 3.6 for instructions on how to change  
the channel displays.  
+18  
+72  
dB  
HI  
Z
-20  
dB  
ø
48V  
MON  
Each channel has two outputs – one on the  
Audio/Control 25 way ‘D’ type connector for  
connection to an XL 9000 console and one on a  
male XLR. Control inputs appear on both the 25  
CHANNEL  
way ‘D’ type ‘Audio/Control’ connector for connection to an XL 9000 and also on two RJ45 connectors for  
connection to an XLogic Mic Amp Remote. The RJ45 connectors also carry power to the remote unit. Note that  
only one of the control inputs should be connected.  
The headphone jack and level control at the left of the unit is fed by a mix of the  
talkback input on the rear panel ‘MON’ connectors and any microphone channel  
that is selected to ‘MON’. The headphone outputs and talkback inputs on multiple  
units can be linked using the ‘MON IN’ and ‘MON OUT’ RJ11 connectors on the  
MONITOR  
rear of the unit (see sections 3.3 and 3.4). The MON switches inter cancel between  
REMOTE  
channels and between multiple units if they are linked, so any input can be  
monitored without having to move the headphones to a different unit.  
The block diagram opposite shows the signal path through the unit.  
Page 15  
 
XLogic Mic Amp Owner’s Manual  
Table 2: Channel Displays (Test Mode)  
Channel  
LK5 (bit 5)  
BCD Switch  
Front Panel Displays  
Address *  
Position  
Setting  
Display 1  
88  
Display 2  
88  
Display 3  
88  
Display 4  
88  
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
b
0
1
seg a  
segb  
segc  
seg d  
seg e  
seg f  
segg  
DP  
seg a  
segb  
segc  
seg d  
seg e  
seg f  
segg  
DP  
seg a  
segb  
segc  
seg d  
seg e  
seg f  
segg  
DP  
seg a  
segb  
segc  
seg d  
seg e  
seg f  
segg  
DP  
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
0
11  
22  
33  
44  
55  
66  
77  
88  
99  
DP  
0
0
11  
22  
33  
44  
55  
66  
77  
88  
99  
DP  
0
0
11  
22  
33  
44  
55  
66  
77  
88  
99  
DP  
0
0
11  
22  
33  
44  
55  
66  
77  
88  
99  
DP  
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
a
Note: 'DP' – decimal point  
– Ignored in Test Mode  
f
b
c
g
*
e
– No entry means display is blank  
– See right for segment display drawing  
d
Page 16  
 
Appendix  
Appendix A – Internal links and fuses  
Fuses (Mains Inlet)  
The mains inlet contains a single 1 amp 1.25" time delay fuse (SSL Part No. 35FJJ310). To change it disconnect the  
mains inlet, then using a small screwdriver prise open the mains selector cover. This contains the fuse. Test and  
replace with the same type and value if necessary.  
Internal Fuses  
The internal power rails are also individually fused. These fuses should only be changed by suitably experienced  
staff. They are listed below:  
Fuses (629610X1 Power Regulator Card)  
+48V FS1 - 500mA wire ended (SSL part No. 35F5E250)  
Fuses (629601X1 Main Card)  
+5V FS1 – 3 amp wire ended (SSL part No. 35F5E330)  
+18V FS2 – 3 amp wire ended (SSL part No. 35F5E330)  
+15V FS3 – 3 amp wire ended (SSL part No. 35F5E330)  
–15V FS4 – 3 amp wire ended (SSL part No. 35F5E330)  
–18V FS5 – 3 amp wire ended (SSL part No. 35F5E330)  
Links  
LK1 Links output 0V to chassis. Normally fitted. Remove to capacitively couple.  
LK3 Links chassis and analogue 0V. Normally fitted. Remove to increase impedance to 10Ω.  
LK4 Test link. Normally set to position ‘a’. See below for details of operation in test mode.  
LK5 Bit 5 link. Normally set to position ‘a’. Increases channel number display by 60 if set to  
position.‘b’  
LK6 Phase/Phantom link. Normally set to position ‘a’. Reverses default selection of remote control of  
phase and +48 switches when set to position ‘b’.  
Test Mode  
Test mode is selected by moving LK4 (screened ‘TEST’) to position ‘b’.  
In test mode:  
• All front panel switches are local, regardless of the remote switch setting.  
• Pressing both phase and Hi-Z switches will drive the motor on that channel anti-clockwise.  
• Pressing both –20dB and 48V will drive the motor on that channel clockwise.  
25-28/85-88  
21-24/81-84  
17-20/77-80  
13-16/73-76  
9-12/69-72  
• All front panel displays have the same segments lit. The  
displayed segments depend on the position of the rotary  
BCD switch (accessible through the lid of the unit) and the  
internal jumper, LK5. Table 2 (opposite) shows the available  
displays.  
29-32/89-92  
33-36/93-96  
37-40  
41-44  
45-48  
49-52  
53-56  
57-60  
5-8/65-68  
1-4/61-64  
0
• Normally the front panel displays are only written to when  
the address is changed. In ‘Test’ mode they are updated  
continuously to aid fault finding.  
Page 17  
 
XLogic Mic Amp Owner’s Manual  
Appendix B: Connector Pinouts  
Mic Input  
Channel Outputs 1 - 4  
Location:  
Front Panel  
Location:  
Rear Panel  
Conn' Type: XLR Female  
Conn' Type: XLR Male  
Pin  
Description  
Chassis  
Pin  
Description  
1
1
Chassis  
2
Audio +ve  
Audio -ve  
2
Audio +ve  
Audio -ve  
3
3
Audio/Control  
Location:  
Rear Panel  
Connector Type:  
25-way D-type Female  
Pin  
Description  
Notes  
1
0V  
0V  
Screen 1  
Screen 2  
Red 1  
Black 1  
Red 5  
Black 5  
Red 2  
Black 2  
Red 6  
Black 6  
Screen 3  
Screen 4  
Red 3  
Black 3  
Red 7  
Black 7  
Red 4  
Black 4  
Red 8  
14  
2
3
Ch 1 Pos  
Ch 1 Neg  
Ch 1 Gain  
Ch 1 Switch  
Ch 2 Pos  
Ch 2 Neg  
Ch 2 Gain  
Ch 2 Switch  
0V  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
4
5
6
0V  
7
Ch 3 Pos  
Ch 3 Neg  
Ch 3 Gain  
Ch 3 Switch  
Ch 4 Pos  
Ch 4 Neg  
Ch 4 Gain  
Ch 4 Switch  
8
9
10  
11  
12  
13  
Black 8  
Screen 5*  
Screen 6*  
Screen 7*  
Screen 8*  
N/C  
ID Bit 1  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
* Linking the appropriate pins to 0V will set the channel displays.  
See Table 4 for details.  
Inputs are pulled to +5V via 15K resistors.  
Page 18  
 
Appendix  
Appendix B: Connector Pinouts (continued)  
Headphone Output  
Location:  
Front Panel  
Conn' Type: Stereo 1/4" Jack Socket  
Pin  
Description  
Tip  
Ring  
Sleeve  
Audio Left +ve  
Audio Right +ve  
0V  
Monitor In / Monitor Out  
Location:  
Rear Panel  
Conn' Type: 6-way RJ11 Socket  
Pin  
Description  
1
2
3
4
5
6
Monitor Bus -ve  
Monitor Bus +ve  
Mon Reset  
0V  
Talkback Bus/Input -ve  
Talkback Bus/Input +ve  
Remote 1 - 2  
Remote 3 - 4  
Location:  
Rear Panel  
Location:  
Rear Panel  
Conn' Type: 8-way RJ45 Socket  
Conn' Type: 8-way RJ45 Socket  
Pin  
Description  
Pin  
Description  
1
2
3
4
5
6
7
8
Ch 2 Switch Control  
Ch 2 Gain Control  
Ch 1 Switch Control  
Ch 2 Overload  
Ch 1 Overload  
Ch 1 Gain Control  
0V  
1
2
3
4
5
6
7
8
Ch 4 Switch Control  
Ch 4 Gain Control  
Ch 3 Switch Control  
Ch 4 Overload  
Ch 3 Overload  
Ch 3 Gain Control  
0V  
+12V  
+12V  
Page 19  
 
XLogic Mic Amp Owner’s Manual  
Appendix B: Connector Pinouts (continued)  
Table 3a - XL 9000 DL to 25way ‘D’ Wiring: Channels 1-8 / 25-32 / 49-56 / 73-80  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
A1  
DL Control  
Pin  
25wD Male  
1-4  
2
Channel 1 Positive  
Channel 1 Negative  
Channel 1 Screen  
Channel 2 Positive  
Channel 2 Negative  
Channel 2 Screen  
Channel 3 Positive  
Channel 3 Negative  
Channel 3 Screen  
Channel 4 Positive  
Channel 4 Negative  
Channel 4 Screen  
Channel 1 Gain control  
Channel 1 Switch Control  
Channel 2 Gain control  
Channel 2 Switch Control  
Channel 3 Gain control  
Channel 3 Switch Control  
Channel 4 Gain control  
Channel 4 Switch Control  
ID Bit 1  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
B1  
C1  
A2  
B2  
C2  
A3  
B3  
C3  
15  
1
4
17  
14  
7
20  
6
A4  
B4  
C4  
9
22  
19  
3
16  
5
A1  
B1  
A2  
B2  
A3  
B3  
A4  
B4  
C1  
C2  
C3  
C4  
18  
8
21  
10  
23  
11*  
n/c  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
A5  
DL Control  
Pin  
25wD Male  
5-8  
2
15  
1
Channel 5 Positive  
Channel 5 Negative  
Channel 5 Screen  
Channel 6 Positive  
Channel 6 Negative  
Channel 6 Screen  
Channel 7 Positive  
Channel 7 Negative  
Channel 7 Screen  
Channel 8 Positive  
Channel 8 Negative  
Channel 8 Screen  
Channel 5 Gain control  
Channel 5 Switch Control  
Channel 6 Gain control  
Channel 6 Switch Control  
Channel 7 Gain control  
Channel 7 Switch Control  
Channel 8 Gain control  
Channel 8 Switch Control  
ID Bit 1  
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
B5  
C5  
A6  
B6  
C6  
A7  
B7  
C7  
4
17  
14  
7
20  
6
A8  
B8  
C8  
9
22  
19  
3
16  
5
A5  
B5  
A6  
B6  
A7  
B7  
A8  
B8  
C5  
C6  
C7  
C8  
18  
8
21  
10  
23  
n/c  
24*  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.  
Page 20  
 
Appendix  
Appendix B: Connector Pinouts (continued)  
Table 3b - XL 9000 DL to 25way ‘D’ Wiring: Channels 9-16 / 33-40 / 57-64 / 81-88  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
D1  
DL Control  
Pin  
25wD Male  
9-12  
2
Channel 9 Positive  
Channel 9 Negative  
Channel 9 Screen  
Channel 10 Positive  
Channel 10 Negative  
Channel 10 Screen  
Channel 11 Positive  
Channel 11 Negative  
Channel 11 Screen  
Channel 12 Positive  
Channel 12 Negative  
Channel 12 Screen  
Channel 9 Gain control  
Channel 9 Switch Control  
Channel 10 Gain control  
Channel 10 Switch Control  
Channel 11 Gain control  
Channel 11 Switch Control  
Channel 12 Gain control  
Channel 12 Switch Control  
ID Bit 1  
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
E1  
F1  
D2  
E2  
F2  
D3  
E3  
G1  
15  
1
4
17  
14  
7
20  
6
D4  
E4  
G2  
9
22  
19  
3
16  
5
D1  
E1  
D2  
E2  
D3  
E3  
D4  
E4  
F1  
F2  
G1  
G2  
18  
8
21  
10  
23  
11*  
24*  
n/c  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
D5  
DL Control  
Pin  
25wD Male  
13-16  
2
15  
1
Channel 13 Positive  
Channel 13 Negative  
Channel 13 Screen  
Channel 14 Positive  
Channel 14 Negative  
Channel 14 Screen  
Channel 15 Positive  
Channel 15 Negative  
Channel 15 Screen  
Channel 16 Positive  
Channel 16 Negative  
Channel 16 Screen  
Channel 13 Gain control  
Channel 13 Switch Control  
Channel 14 Gain control  
Channel 14 Switch Control  
Channel 15 Gain control  
Channel 15 Switch Control  
Channel 16 Gain control  
Channel 16 Switch Control  
ID Bit 1  
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
E5  
G7  
D6  
E6  
G8  
D7  
E7  
F7  
4
17  
14  
7
20  
6
D8  
E8  
F8  
9
22  
19  
3
16  
5
D5  
E5  
D6  
E6  
D7  
E7  
D8  
E8  
G7  
G8  
F7  
F8  
18  
8
21  
10  
23  
n/c  
n/c  
12*  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.  
Page 21  
 
XLogic Mic Amp Owner’s Manual  
Appendix B: Connector Pinouts (continued)  
Table 3c - XL 9000 DL to 25way ‘D’ Wiring: Channels 17-24 / 41-48 / 65-72 / 89-96  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
L1  
DL Control  
Pin  
25wD Male  
17-20  
2
Channel 17 Positive  
Channel 17 Negative  
Channel 17 Screen  
Channel 18 Positive  
Channel 18 Negative  
Channel 18 Screen  
Channel 19 Positive  
Channel 19 Negative  
Channel 19 Screen  
Channel 20 Positive  
Channel 20 Negative  
Channel 20 Screen  
Channel 17 Gain control  
Channel 17 Switch Control  
Channel 18 Gain control  
Channel 18 Switch Control  
Channel 19 Gain control  
Channel 19 Switch Control  
Channel 20 Gain control  
Channel 20 Switch Control  
ID Bit 1  
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
K1  
J1  
L2  
K2  
J2  
L3  
K3  
H1  
L4  
15  
1
4
17  
14  
7
20  
6
9
K4  
H2  
22  
19  
3
16  
5
L1  
K1  
L2  
K2  
L3  
K3  
L4  
K4  
J1  
18  
8
21  
10  
23  
11*  
n/c  
12*  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
J2  
H1  
H2  
Signal  
Cable #  
Colour  
DL Audio  
Pin  
L5  
DL Control  
Pin  
25wD Male  
21-24  
2
15  
1
Channel 21 Positive  
Channel 21 Negative  
Channel 21 Screen  
Channel 22 Positive  
Channel 22 Negative  
Channel 22 Screen  
Channel 23 Positive  
Channel 23 Negative  
Channel 23 Screen  
Channel 24 Positive  
Channel 24 Negative  
Channel 24 Screen  
Channel 21 Gain control  
Channel 21 Switch Control  
Channel 22 Gain control  
Channel 22 Switch Control  
Channel 23 Gain control  
Channel 23 Switch Control  
Channel 24 Gain control  
Channel 24 Switch Control  
ID Bit 1  
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
Red 1  
Black 1  
Screen 1  
Red 2  
Black 2  
Screen 2  
Red 3  
Black 3  
Screen 3  
Red 4  
Black 4  
Screen 4  
Red 5  
Black 5  
Red 6  
Black 6  
Red 7  
Black 7  
Red 8  
K5  
H7  
L6  
K6  
H8  
L7  
K7  
J7  
L8  
K8  
4
17  
14  
7
20  
6
9
22  
19  
3
16  
5
J8  
L5  
K5  
L6  
K6  
L7  
K7  
L8  
K8  
H7  
H8  
J7  
18  
8
21  
10  
23  
n/c  
24*  
12*  
n/c  
n/c  
Black 8  
Screen 5  
Screen 6  
Screen 7  
Screen 8  
ID Bit 2  
ID Bit 3  
ID Bit 4  
ID Bit 5  
J8  
* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.  
Page 22  
 
Appendix  
Appendix B: Connector Pinouts (continued)  
Table 4 - Channel Address Bit Linking  
Channel  
Action  
Channel  
Action  
Channels 1-4  
Channels 5-8  
Channels 9-16  
connect pin 11  
connect pin 24  
connect pins 11, 24  
Channels 49-52 connect pins 11, 12, 25  
Channels 53-56 connect pins 12, 24, 25  
Channels 57-60 connect pins 11, 12, 24, 25  
Channels 61-64 connect pin 13 *  
Channels 65-68 connect pins 11, 13 *  
Channels 69-72 connect pins 24, 13 *  
Channels 73-76 connect pins 11, 24, 13 *  
Channels 77-80 connect pins 12, 13 *  
Channels 81-84 connect pins 11, 12, 13 *  
Channels 85-88 connect pins 12, 24, 13 *  
Channels 89-92 connect pins 11, 12, 24, 13 *  
Channels 92-96 connect pins 25, 13 *  
Channels 13-16 connect pin 12  
Channels 17-20 connect pins 11, 12  
Channels 21-24 connect pins 12, 24  
Channels 25-28 connect pins 11, 12, 24  
Channels 29-32 connect pin 25  
Channels 33-36 connect pins 11, 25  
Channels 37-40 connect pins 24, 25  
Channels 41-44 connect pins 11, 24, 25  
Channels 45-48 connect pins 12, 25  
* For channel numbers above 60 either connect pin 13 or set LK5 to position 'b'  
The latter allows the use of standard 8 pair individually screened multicore  
Page 23  
 
XLogic Mic Amp Owner’s Manual  
Appendix C – Performance Specification  
Conditions:  
Source impedance 150Ω unless otherwise stated.  
All measurements are RMS and are made using a 22Hz to 22kHz filter unless otherwise stated.  
General  
Gain:  
Continuously variable from +18dB to +72dB with switchable 20dB pad  
>1200Ω switchable to 8200Ω  
Input Impedance:  
Noise  
Input terminated with 150Ω  
Equivalent input noise:  
Gain  
70dB  
50dB  
40dB  
30dB  
18dB  
EIN  
–129dBu  
–129dBu  
–128dBu  
–127.5dBu  
–120dBu  
Frequency Response  
Measured reference level at 1kHz. Source impedance 50Ω.  
Minimum Gain  
Maximum Gain  
0.1dB  
20Hz to 20kHz  
10Hz to 96kHz  
10Hz to 200kHz  
0.1dB  
0.2dB  
+0.2/–0.75dB  
+0.2/–6dB  
+0.2/–1dB  
Common Mode Rejection Ratio (CMRR)  
At minimum gain (+18dB), input level +6dBu, ground referenced:  
Frequency  
20Hz to 1kHz  
10kHz  
CMRR (dB)  
> 75dB  
> 60dB  
At maximum gain (+72dB), input level –45dBu, ground referenced:  
Frequency  
20Hz to 1kHz  
10kHz  
CMRR (dB)  
> 85dB  
> 75dB  
Page 24  
 
Appendix  
THD + Noise  
In all cases THD is essentially unmeasurable, being less than the inherent noise of the amplifier until the output  
level exceeds +20dBu.  
Note: All THD+N measurements at gains above +30dB made using 40dB resistive pad to minimise effect of  
generator noise at low signal levels.  
Gain +18dB, input level +0dBu, output level +18dBu  
20Hz to 10kHz  
20Hz to 20kHz  
THD + N < 0.0007%  
THD + N < 0.002%  
(20Hz - 22kHz filter)  
(80kHz filter)  
Gain +30dB, input level –12dBu, output level +18dBu  
20Hz to 10kHz  
20Hz to 20kHz  
THD + N < 0.004%  
THD + N < 0.005%  
(20Hz - 22kHz filter)  
(80kHz filter)  
Gain +70dB, input level –50dBu, output level +20dBu  
20Hz to 10kHz  
20Hz to 20kHz  
THD + N < 0.03%  
THD + N < 0.05%  
(20Hz - 22kHz filter)  
(80kHz filter)  
Crosstalk  
Channel to channel crosstalk, measured with one input terminated with 150Ω. All channels at +50dB gain. A test  
tone of –30dBu is applied to any channel input except the one under test. Crosstalk is the ratio of level at the  
output of the test channel and the output of the channel to which signal is applied:  
@ 50Hz  
@ 1kHz  
@ 15kHz  
< –105dB  
< –105dB  
< –90dB  
Headroom  
Headroom is defined at the output level at which THD exceeds 1%:  
Headroom > +28dBu output level, 20Hz to 20kHz, any gain setting  
Page 25  
 
XLogic Mic Amp Owner’s Manual  
Appendix D – Calibration Information  
The XLogic Mic Amp is factory calibrated and should only need calibration if a potentiometer or other  
component has been replaced or if it is suspected that there is a problem with calibration.  
In all of the following instructions it is assumed that the top cover has been removed and that power has been  
applied. It is also assumed that unless otherwise specified, all switches are released and all potentiometers are at  
unity, minimum or indent position as appropriate. The required accuracy for each adjustment will be specified  
along with the target value.  
All level and distortion measurements should be made with audio-band 20Hz to 20kHz filters unless otherwise  
specified.  
Microphone Input  
Equipment Required:  
Calibrated audio oscillator and audio level meter  
50Hz sinewave @ –12dBu, common mode  
Test Signal:  
Input and Output:  
Unit Setup:  
Oscillator to Microphone Input and Mic Out to the audio level meter  
Set the Microphone Gain to ‘36dB’  
CMRR Trim  
Adjustment:  
On the 629601 card, adjust the following presets for minimum level (normally  
< –40dBu):  
Channel 1:  
Channel 2:  
Channel 3:  
Channel 4:  
VR1  
VR2  
VR3  
VR4  
Page 26  
 
Appendix  
Appendix E – Physical Specification *  
Depth:  
325mm/12.8 inches not including heatsink  
365mm/14.3 inches including heatsink  
400mm/15.75 inches including connectors  
Height:  
44.5mm/1.75 inches (1 RU)  
480mm/19 inches  
Width:  
Weight:  
4.1kg/9 pounds  
Power:  
45 Watts/60 VA Max  
Boxed size:  
Boxed weight:  
520mm x 520mm x 182mm (20.5" x 20.5" x 7.2")  
6.4kg (14 pounds)  
* All weights and dimensions are approximate  
Appendix F – Environmental Specifcation  
Temperature  
Operating:  
5 to 30 Deg. C  
Non-operating:  
Max. Gradient:  
–20 to 50 Deg. C  
15 Deg. C/Hour  
Relative Humidity  
Operating:  
20 to 80 %  
Non-operating:  
Max. wet bulb:  
5 to 90 %  
29 Deg. C (non-condensing)  
Vibration  
Shock  
Operating:  
Non-operating, power off:  
< 0.2 G (3 - 100Hz.)  
< 0.4 G (3 - 100Hz.)  
Operating:  
Non-operating:  
< 2 G (10mSec. Max.)  
< 10 G (10mSec. Max.)  
Altitude  
Operating:  
Non-operating:  
0 to 3000m (above sea level)  
0 to 12000m  
Page 27  
 
XLogic Mic Amp Owner’s Manual  
Page 28  
 

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