Solid State Logic 82S6XL020E User Manual

Super Analogue Mic Amp

Owner’s Manual

Solid State Logic

Super-Analogue™ Outboard

Owner’s Manual

82S6XL020E

S U P E R A N A L O G U E

M I C A M P

XLogic Mic Amp Owner’s Manual

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

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

Begbroke, Oxford, England, OX5 1RU • [phone]

320 West 46th Street, 2nd Floor, New York, NY 10036, USA • [phone]

Suite 401, 5757 Wilshire Blvd, Los Angeles, CA 90036, USA • [phone]

3-55-14 Sendagaya, Shibuya-Ku, Tokyo 151-0051, Japan • [phone]

7 bis, rue de la Victoire, le Blanc Mesnil, Paris 93150, France • [phone]

Via Timavo 34, 20124 Milano, Italy • [phone]

Solid State Logic

Visit SSL at URL: http://www.solid-state-logic.com

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

© Solid State Logic

Page 1

Contents

1.0 Introduction 3

2.0 Safety Considerations 4
Safety Warnings 4

3.0 Installation 7
Setting the mains voltage selector 7
Mounting 7
Standalone Operation 7
Connecting to XL 9000 consoles 9
Connecting to XLogic Remote Control unit 11
Configuring the unit 13

4.0 Operation 15

Appendices:

A Internal Links and Fuses 17

Test Mode 17

B Connector Details 18
C Electronic Specification 24
D Calibration Information 26

E Physical Specification 27

F Environmental Specification 27

XLogic Mic Amp Remote (front)

XLogic Mic Amp Remote (rear)

XLogic Mic Amp (rear)

XLogic Mic Amp (front)

XLogic Mic Amp Owner’s Manual

Page 2

XL

SUPER ANALOGUE

M I C A M P

ogic

MONITOR

REMOTE

SIGNAL

CHANNEL

GAIN

HI

Z

-20

dB

48V MON

Ø

+18 +72

dB

SIGNAL

CHANNEL

GAIN

HI

Z

-20

dB

48V MON

+18 +72

dB

SIGNAL

CHANNEL

GAIN

HI

Z

-20

dB

48V MON

Ø

+18 +72

dB

SIGNAL

CHANNEL

GAIN

HI

Z

-20

dB

48V MON

Ø

+18 +72

dB

Solid

State

Logic

Ø

GAIN

dB

+18 +72

Ø

0/LD

MIC 1

HI

Z

XL

S U P E R A N A L O G U E

M I C A M P R E M O T E

ogic

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 2

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 3

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 4

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 5

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 6

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 7

HI

Z

-20

dB

GAIN

dB

+18 +72

Ø

0/LD

MIC 8

HI

Z

-20

dB

Solid

State

Logic

REMOTE 1/2REMOTE 5/6REMOTE 7/8 REMOTE 3/4

Solid State Logic

OXFORD • ENGLAND

MIC OUT 4 MIC OUT 3

MIC OUT 2 MIC OUT 1

AUDIO/

CONTROL

MON IN MON OUT REM 3/4 REM 1/2

100V

120V

220V

240V

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

Introduction

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.

2.3 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.

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.

XLogic Mic Amp Owner’s Manual

Page 4

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: Blue

EARTH: 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.

Safety Considerations

Page 5

XLogic Mic Amp Owner’s Manual

Page 6

240

120

100

240

230

120

100

240

230

120

100

240

230

100

100V

120V

230V

240V

100V Setting

(Use for 90-105V)

120V Setting

(Use for 105-125V)

230V Setting

(Do not use)

240V Setting

(Use for 220-240V)

Mains Input Module

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’!

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.

Installation

Page 7

VIDEO 1 VIDEO 2

REMOTE MIC AMPS 1-4

REMOTE MIC AMPS 5-8

REMOTE MIC AMPS 9-12

REMOTE MIC AMPS 13-16

REMOTE MIC AMPS 17-20

REMOTE MIC AMPS 21-24

REMOTE MIC AMPS 25-28

REMOTE MIC AMPS 29-32

REMOTE MIC AMPS 33-36

REMOTE MIC AMPS 37-40

REMOTE MIC AMPS 41-44

REMOTE MIC AMPS 45-48

Channels 1-4

Channels 5-8

Console switched talkback output

RJ11-RJ11 monitor bus link

SSL Pt. No. 66C67240

XLR - RJ11 talkback input cable

SSL Pt. No. 66C67241

25wD - 25wD console to mic amp cable. SSL Part No.

66CM10xx , where xx is the cable length in meters

MIC OUT 4

MIC OUT 3

MIC OUT 2

MIC OUT 1

AUDIO/

CONTROL

MON IN MON OUT REM 3/4 REM 1/2

MIC OUT 4

MIC OUT 3

MIC OUT 2

MIC OUT 1

AUDIO/

CONTROL

MON IN MON OUT REM 3/4 REM 1/2

100V

120V

220V

240V

100V

120V

220V

240V

XLogic Mic Amp Owner’s Manual

Page 8

Console Wiring Diagram

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.

Installation

Page 9

REMOTE 1/2

REMOTE 5/6

REMOTE 7/8

REMOTE 3/4

Solid State Logic

OXFORD • EN GLAND

RJ45-RJ45 (Cat 5) shielded pin to pin cable.

SSL Pt.No. 66C673xx where xx is length in metres

Channels 1-4

Channels 5-8

Console switched talkback output

RJ11-RJ11 monitor bus link

SSL Pt. No. 66C67240

XLR - RJ11 talkback input cable

SSL Pt. No. 66C67241

MIC OUT 4

MIC OUT 3

MIC OUT 2

MIC OUT 1

AUDIO/

CONTROL

MON IN MON OUT REM 3/4 REM 1/2

MIC OUT 4 MIC OUT 3

MIC OUT 2

MIC OUT 1

AUDIO/

CONTROL

MON IN MON OUT REM 3/4 REM 1/2

100V

120V

220V

240V

100V

120V

220V

240V

XLogic Mic Amp Owner’s Manual

Page 10

Remote Control Wiring Diagram

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.

Installation

Page 11

XLogic Mic Amp Owner’s Manual

Page 12

Channel

LK5

BCD Switch

Front Panel Displays

Address *

Position

Setting

Display 1

Display 2

Display 3

Display 4

00000a0DPDPDPDP00001a1123400010a2567800011a3910111200100a41314151600101a51718192000110a62122232400111a72526272801000a82930313201001a93334353601010aA3738394001011aB4142434401100aC4546474801101aD4950515201110aE5354555601111bF5758596010000b06162636410001b16566676810010b26970717210011b37374757610100b47778798010101b58182838410110b68586878810111b78990919211000b89394959611001b9DPDPDPDP11010bADPDPDPDP11011bBDPDPDPDP11100bCDPDPDPDP11101bDDPDPDPDP11110bEDPDPDPDP11111bFDPDPDPDPNote:

'DP' - decimal point

* Pull address pins marked '1' to 0V to enable.

Table 1: Channel Display Setting - Normal Operation

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’.

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’.

25-28/85-88
21-24/81-84
17-20/77-80
13-16/73-76

9-12/69-72

5-8/65-68
1-4/61-64

0

29-32/89-92
33-36/93-96
37-40
41-44

45-48
49-52
53-56
57-60

Configuration

Page 13

XLogic Mic Amp Owner’s Manual

Page 14

+48V

PHANTOM

POWER

+48V

-20dB

Hi-Z

MIC

TRIM

+18 — +78dB

MONØ

+

-

25wD

25wD

MON IN/MON OUT

Headphone

amp

Stereo Jack

DC Control
from Console

25wD

RJ45 -1

DC Control
from remote

PIC Controller

Channel 1

RST

+48V

PHANTOM

POWER

+48V

-20dB

Hi-Z

MIC

TRIM

+18 — +78dB

MONØ

+

-

25wD

25wD

DC Control
from Console

RJ45 -1

DC Control
from remote

PIC Controller

Channel 2

RST

+48V

PHANTOM

POWER

+48V

-20dB

Hi-Z

MIC

TRIM

+18 — +78dB

MONØ

+

-

25wD

25wD

DC Control
from Console

RJ45 -2

DC Control
from remote

PIC Controller

Channel 3

RST

+48V

PHANTOM

POWER

+48V

-20dB

Hi-Z

MIC

TRIM

+18 — +78dB

MONØ

+

-

25wD

25wD

DC Control
from Console

RJ45 -2

DC Control
from remote

PIC Controller

Channel 4

RST

∑

+5V

Talkback Input

5

0

A

B

C

D

E

976

5

4

3

2

1

8

PIC Display

Controller

REMOTE

REM

REM

REM

REM

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
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
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.

See section 3.6 for instructions on how to change
the channel displays.

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
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
rear of the unit (see sections 3.3 and 3.4). The MON switches inter cancel between
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.

Operation

Page 15

SIGNAL

CHANNEL

GAIN

HIZ-20

dB

48V MON

ø

+18 +72

dB

MONITOR

REMOTE

MONITOR

REMOTE

XLogic Mic Amp Owner’s Manual

Page 16

Channel

LK5 (bit 5)

BCD Switch

Front Panel Displays

Address *

Position

Setting

Display 1

Display 2

Display 3

Display 4

xxxxxa088888888xxxxxa1seg a

seg a

seg a

seg a

xxxxxa2

seg b

seg b

seg b

seg b

xxxxxa3

seg c

seg c

seg c

seg c

xxxxxa4

seg d

seg d

seg d

seg d

xxxxxa5

seg e

seg e

seg e

seg e

xxxxxa6

seg f

seg f

seg f

seg fxxxxxa7seg g

seg g

seg g

seg g

xxxxxa8DPDPDPDPxxxxxa9xxxxxaAxxxxxaBxxxxxaCxxxxxaDxxxxxaExxxxxbFxxxxxb00000xxxxxb111111111xxxxxb222222222xxxxxb333333333xxxxxb444444444xxxxxb555555555xxxxxb666666666xxxxxb777777777xxxxxb888888888xxxxxb999999999xxxxxbADPDPDPDPxxxxxbB0000xxxxxbCxxxxxbDxxxxxbExxxxxbFNote:

'DP'

–

decimal point

*–Ignored in Test Mode

–

No entry means display is blank

–

See right for segment display drawing

Table 2: Channel Displays (Test Mode)

a

b
c

d

f

e

g

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.

• 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.

• 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.

Appendix

Page 17

25-28/85-88
21-24/81-84
17-20/77-80
13-16/73-76

9-12/69-72

5-8/65-68
1-4/61-64

0

29-32/89-92
33-36/93-96
37-40
41-44

45-48
49-52
53-56
57-60

XLogic Mic Amp Owner’s Manual

Page 18

Appendix B: Connector Pinouts

Mic Input

Location:

Front Panel

Conn' Type:

XLR Female

Pin

Description

1

Chassis

2

Audio +ve

3

Audio -ve

Channel Outputs 1 - 4

Location:

Rear Panel

Conn' Type:

XLR Male

Pin

Description

1

Chassis

2

Audio +ve

3

Audio -ve

Audio/Control

Location:

Rear Panel

Connector Type:

25-way D-type Female

Pin

Description

Notes

10VScreen

1140V

Screen

22Ch1Pos

Red115Ch1

Neg

Black

13Ch1Gain

Red516Ch1

Switch

Black

54Ch2Pos

Red217Ch2

Neg

Black

25Ch2Gain

Red618Ch2

Switch

Black

660V

Screen

3190V

Screen

47Ch3Pos

Red320Ch3

Neg

Black

38Ch3Gain

Red721Ch3

Switch

Black

79Ch4Pos

Red422Ch4

Neg

Black

410Ch4Gain

Red823Ch4

Switch

Black

811ID Bit

1

Screen

5*24ID Bit

2

Screen

6*12ID Bit

3

Screen

7*25ID Bit

4

Screen

8*13ID Bit

5

N/C

*

Linking the appropriate pins to 0V will set the channel displays.

See Table 4 for details.

Inputs are pulled to +5V via 15K resistors.

Appendix

Page 19

Appendix B: Connector Pinouts (continued)

Remote 1 - 2

Location:

Rear Panel

Conn' Type:

8-way RJ45 Socket

Pin

Description

1Ch2

Switch Control

2Ch2

Gain Control

3Ch1

Switch Control

4Ch2

Overload

5Ch1

Overload

6Ch1

Gain Control

70V8

+12V

Remote 3 - 4

Location:

Rear Panel

Conn' Type:

8-way RJ45 Socket

Pin

Description

1Ch4

Switch Control

2Ch4

Gain Control

3Ch3

Switch Control

4Ch4

Overload

5Ch3

Overload

6Ch3

Gain Control

70V8

+12V

Monitor In / Monitor Out

Location:

Rear Panel

Conn' Type:

6-way RJ11 Socket

Pin

Description

1

Monitor Bus -ve

2

Monitor Bus +ve

3

Mon Reset

40V5

Talkback Bus/Input -ve

6

Talkback Bus/Input +ve

Headphone Output

Location:

Front Panel

Conn' Type:

Stereo 1/4" Jack Socket

Pin

Description

Tip

Audio Left +ve

Ring

Audio Right +ve

Sleeve

0V

XLogic Mic Amp Owner’s Manual

Page 20

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

DL Control

25wD Male

Pin

Pin

1-4

Channel

1

Positive

1

Red1A12Channel

1

Negative

1

Black

1B115

Channel

1

Screen

1

Screen

1C11

Channel

2

Positive

1

Red2A24Channel

2

Negative

1

Black

2B217

Channel

2

Screen

1

Screen

2C214

Channel

3

Positive

1

Red3A37Channel

3

Negative

1

Black

3B320

Channel

3

Screen

1

Screen

3C36

Channel

4

Positive

1

Red4A49Channel

4

Negative

1

Black

4B422

Channel

4

Screen

1

Screen

4C419

Channel

1

Gain control

1

Red5A13Channel

1

Switch Control

1

Black

5B116

Channel

2

Gain control

1

Red6A25Channel

2

Switch Control

1

Black

6B218

Channel

3

Gain control

1

Red7A38Channel

3

Switch Control

1

Black

7B321

Channel

4

Gain control

1

Red8A410Channel

4

Switch Control

1

Black

8B423

ID Bit

11Screen

5C1 11*

ID Bit

21Screen

6C2n/c

ID Bit

31Screen

7C3n/c

ID Bit

41Screen

8C4n/c

ID Bit

5

Signal

Cable #

Colour

DL Audio

DL Control

25wD Male

Pin

Pin

5-8

Channel

5

Positive

2

Red1A52Channel

5

Negative

2

Black

1B515

Channel

5

Screen

2

Screen

1C51

Channel

6

Positive

2

Red2A64Channel

6

Negative

2

Black

2B617

Channel

6

Screen

2

Screen

2C614

Channel

7

Positive

2

Red3A77Channel

7

Negative

2

Black

3B720

Channel

7

Screen

2

Screen

3C76

Channel

8

Positive

2

Red4A89Channel

8

Negative

2

Black

4B822

Channel

8

Screen

2

Screen

4C819

Channel

5

Gain control

2

Red5A53Channel

5

Switch Control

2

Black

5B516

Channel

6

Gain control

2

Red6A65Channel

6

Switch Control

2

Black

6B618

Channel

7

Gain control

2

Red7A78Channel

7

Switch Control

2

Black

7B721

Channel

8

Gain control

2

Red8A810Channel

8

Switch Control

2

Black

8B823

ID Bit

12Screen

5C5n/c

ID Bit

22Screen

6C6 24*

ID Bit

32Screen

7C7n/c

ID Bit

42Screen

8C8n/c

ID Bit

5

* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.

Appendix

Page 21

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

DL Control

25wD Male

Pin

Pin

9-12

Channel

9

Positive

3

Red1D12Channel

9

Negative

3

Black

1E115

Channel

9

Screen

3

Screen

1F11

Channel

10

Positive

3

Red2D24Channel

10

Negative

3

Black

2E217

Channel

10

Screen

3

Screen

2F214

Channel

11

Positive

3

Red3D37Channel

11

Negative

3

Black

3E320

Channel

11

Screen

3

Screen

3G16

Channel

12

Positive

3

Red4D49Channel

12

Negative

3

Black

4E422

Channel

12

Screen

3

Screen

4G219

Channel

9

Gain control

3

Red5D13Channel

9

Switch Control

3

Black

5E116

Channel

10

Gain control

3

Red6D25Channel

10

Switch Control

3

Black

6E218

Channel

11

Gain control

3

Red7D38Channel

11

Switch Control

3

Black

7E321

Channel

12

Gain control

3

Red8D410Channel

12

Switch Control

3

Black

8E423

ID Bit

13Screen

5F1 11*

ID Bit

23Screen

6F2 24*

ID Bit

33Screen

7G1n/c

ID Bit

43Screen

8G2n/c

ID Bit

5

n/c

Signal

Cable #

Colour

DL Audio

DL Control

25wD Male

Pin

Pin

13-16

Channel

13

Positive

4

Red1D52Channel

13

Negative

4

Black

1E515

Channel

13

Screen

4

Screen

1G71

Channel

14

Positive

4

Red2D64Channel

14

Negative

4

Black

2E617

Channel

14

Screen

4

Screen

2G814

Channel

15

Positive

4

Red3D77Channel

15

Negative

4

Black

3E720

Channel

15

Screen

4

Screen

3F76

Channel

16

Positive

4

Red4D89Channel

16

Negative

4

Black

4E822

Channel

16

Screen

4

Screen

4F819

Channel

13

Gain control

4

Red5D53Channel

13

Switch Control

4

Black

5E516

Channel

14

Gain control

4

Red6D65Channel

14

Switch Control

4

Black

6E618

Channel

15

Gain control

4

Red7D78Channel

15

Switch Control

4

Black

7E721

Channel

16

Gain control

4

Red8D810Channel

16

Switch Control

4

Black

8E823

ID Bit

14Screen

5G7n/c

ID Bit

24Screen

6G8n/c

ID Bit

34Screen

7F7 12*

ID Bit

44Screen

8F8n/c

ID Bit

5

n/c

* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.

XLogic Mic Amp Owner’s Manual

Page 22

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

DL Control

25wD Male

Pin

Pin

17-20

Channel

17

Positive

5

Red1L12Channel

17

Negative

5

Black

1K115

Channel

17

Screen

5

Screen

1J11

Channel

18

Positive

5

Red2L24Channel

18

Negative

5

Black

2K217

Channel

18

Screen

5

Screen

2J214

Channel

19

Positive

5

Red3L37Channel

19

Negative

5

Black

3K320

Channel

19

Screen

5

Screen

3H16

Channel

20

Positive

5

Red4L49Channel

20

Negative

5

Black

4K422

Channel

20

Screen

5

Screen

4H219

Channel

17

Gain control

5

Red5L13Channel

17

Switch Control

5

Black

5K116

Channel

18

Gain control

5

Red6L25Channel

18

Switch Control

5

Black

6K218

Channel

19

Gain control

5

Red7L38Channel

19

Switch Control

5

Black

7K321

Channel

20

Gain control

5

Red8L410Channel

20

Switch Control

5

Black

8K423

ID Bit

15Screen

5J1 11*

ID Bit

25Screen

6J2n/c

ID Bit

35Screen

7H1 12*

ID Bit

45Screen

8H2n/c

ID Bit

5

n/c

Signal

Cable #

Colour

DL Audio

DL Control

25wD Male

Pin

Pin

21-24

Channel

21

Positive

6

Red1L52Channel

21

Negative

6

Black

1K515

Channel

21

Screen

6

Screen

1H71

Channel

22

Positive

6

Red2L64Channel

22

Negative

6

Black

2K617

Channel

22

Screen

6

Screen

2H814

Channel

23

Positive

6

Red3L77Channel

23

Negative

6

Black

3K720

Channel

23

Screen

6

Screen

3J76

Channel

24

Positive

6

Red4L89Channel

24

Negative

6

Black

4K822

Channel

24

Screen

6

Screen

4J819

Channel

21

Gain control

6

Red5L53Channel

21

Switch Control

6

Black

5K516

Channel

22

Gain control

6

Red6L65Channel

22

Switch Control

6

Black

6K618

Channel

23

Gain control

6

Red7L78Channel

23

Switch Control

6

Black

7K721

Channel

24

Gain control

6

Red8L810Channel

24

Switch Control

6

Black

8K823

ID Bit

16Screen

5H7n/c

ID Bit

26Screen

6H8 24*

ID Bit

36Screen

7J7 12*

ID Bit

46Screen

8J8n/c

ID Bit

5

n/c

* Pinout shown is for channels 1-24. For other bays connect id. bits as shown in Table 4.

Appendix

Page 23

Appendix B: Connector Pinouts (continued)

Table 4 - Channel Address Bit Linking

Channel

Action

Channel

Action

Channels

1-4

connect

pin11Channels

49-52

connect

pins

11, 12, 25

Channels

5-8

connect

pin24Channels

53-56

connect

pins

12, 24, 25

Channels

9-16

connect

pins

11, 24

Channels

57-60

connect

pins

11, 12, 24, 25

Channels

13-16

connect

pin12Channels

61-64

connect

pin

13 *

Channels

17-20

connect

pins

11, 12

Channels

65-68

connect

pins

11, 13 *

Channels

21-24

connect

pins

12, 24

Channels

69-72

connect

pins

24, 13 *

Channels

25-28

connect

pins

11, 12, 24

Channels

73-76

connect

pins

11, 24, 13 *

Channels

29-32

connect

pin25Channels

77-80

connect

pins

12, 13 *

Channels

33-36

connect

pins

11, 25

Channels

81-84

connect

pins

11, 12, 13 *

Channels

37-40

connect

pins

24, 25

Channels

85-88

connect

pins

12, 24, 13 *

Channels

41-44

connect

pins

11, 24, 25

Channels

89-92

connect

pins

11, 12, 24, 13 *

Channels

45-48

connect

pins

12, 25

Channels

92-96

connect

pins

25, 13 *

*

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

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

Input Impedance: >1200Ω switchable to 8200Ω

Noise

Input terminated with 150Ω

Equivalent input noise:

Gain EIN

70dB –129dBu

50dB –129dBu

40dB –128dBu

30dB –127.5dBu

18dB –120dBu

Frequency Response

Measured reference level at 1kHz. Source impedance 50Ω.

Minimum Gain Maximum Gain

20Hz to 20kHz ±0.1dB ±0.1dB

10Hz to 96kHz ±0.2dB +0.2/–0.75dB

10Hz to 200kHz +0.2/–1dB +0.2/–6dB

Common Mode Rejection Ratio (CMRR)

At minimum gain (+18dB), input level +6dBu, ground referenced:

Frequency CMRR (dB)

20Hz to 1kHz > 75dB

10kHz > 60dB

At maximum gain (+72dB), input level –45dBu, ground referenced:

Frequency CMRR (dB)

20Hz to 1kHz > 85dB

10kHz > 75dB

XLogic Mic Amp Owner’s Manual

Page 24

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 THD + N < 0.0007% (20Hz - 22kHz filter)

20Hz to 20kHz THD + N < 0.002% (80kHz filter)

Gain +30dB, input level –12dBu, output level +18dBu

20Hz to 10kHz THD + N < 0.004% (20Hz - 22kHz filter)

20Hz to 20kHz THD + N < 0.005% (80kHz filter)

Gain +70dB, input level –50dBu, output level +20dBu

20Hz to 10kHz THD + N < 0.03% (20Hz - 22kHz filter)

20Hz to 20kHz THD + N < 0.05% (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 < –105dB

@ 1kHz < –105dB

@ 15kHz < –90dB

Headroom

Headroom is defined at the output level at which THD exceeds 1%:

Headroom > +28dBu output level, 20Hz to 20kHz, any gain setting

Appendix

Page 25

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

Test Signal: 50Hz sinewave @ –12dBu, common mode

Input and Output: Oscillator to Microphone Input and Mic Out to the audio level meter

Unit Setup: Set the Microphone Gain to ‘36dB’

CMRR Trim

Adjustment: On the 629601 card, adjust the following presets for minimum level (normally

< –40dBu):

Channel 1: VR1

Channel 2: VR2

Channel 3: VR3

Channel 4: VR4

XLogic Mic Amp Owner’s Manual

Page 26

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)

Width: 480mm/19 inches

Weight: 4.1kg/9 pounds

Power: 45 Watts/60 VA Max

Boxed size: 520mm x 520mm x 182mm (20.5" x 20.5" x 7.2")

Boxed weight: 6.4kg (14 pounds)

* All weights and dimensions are approximate

Appendix F – Environmental Specifcation

Temperature Operating: 5 to 30 Deg. C

Non-operating: –20 to 50 Deg. C
Max. Gradient: 15 Deg. C/Hour

Relative Humidity Operating: 20 to 80 %

Non-operating: 5 to 90 %
Max. wet bulb: 29 Deg. C (non-condensing)

Vibration Operating: < 0.2 G (3 - 100Hz.)

Non-operating, power off: < 0.4 G (3 - 100Hz.)

Shock Operating: < 2 G (10mSec. Max.)

Non-operating: < 10 G (10mSec. Max.)

Altitude Operating: 0 to 3000m (above sea level)

Non-operating: 0 to 12000m

Appendix

Page 27

XLogic Mic Amp Owner’s Manual

Page 28