Ampetronic MP522 User manual

1. INTRODUCTION
The MP522 preamp was designed for use with Ampetronic Induction Loop
drivers, but can be used in other applications as a separate seven input
pre-amp. The unit is designed to amplify five microphone channels by a
maximum of 46 dB, and two line-level inputs by 6 dB.
Each channel has an electronically balanced input. Microphone channels
use XLR input connectors, with phantom power facility. Balanced line-level
inputs use 6.3 mm jack sockets. A gain control is provided for each channel,
and the combined output signal is electronically balanced.
Power for the preamp is normally obtained from the host Ampetronic
amplifier, but the unit can be powered from a small, separate power supply,
Ampetronic type PS3.
2. INSTALLATION
The unit is designed to be used in a clean and professional environment. If
used with the ILD122 range of loop drivers, the preamp can be installed in
the RM-1U rack mount kit with the correct blanking plate.
3. TECHNICAL SPECIFICATION
Microphone input
Connector: XLR
Channel gain: 31 dB or 46dB, at max gain position.
Rear panel selection.
Frequency response: ±1 dB 20 Hz - 20 KHz.
Input overload: -10 dBu or -25dBu,
gain selection dependent
Input noise level: -127dBu, 200 Wsource
Input impedance: 5 kW.
Phantom power: selectable 0V/15V
MP522 Microphone / Line
Preamplifier

010 010 010 010 010 010
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
MIC 1 MIC 2 MIC 3 MIC 4 MIC 5 LINE 1 LINE 2
OVERLOAD
POWER
MICROPHONE
PREAMP
MP 522 010
1
2
3
1
2
3
4
5
6
7
8
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
LINE
21
Gain Boost
Phantom
BA
LINE 1
LINE 2OUTPUT BOUTPUT A
POWER REMOTE
MICROPHONE PREAMP MP 522
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
Designed and Manufactured in England by AMPETRONIC Ltd.
Line-level input
Connector:
6.3mm 3-pole jack socket
Channel gain: 6 dB at max gain position.
Frequency response; ±1 dB 20 Hz - 20 KHz.
Input overload: +20dBu
Input impedance: each side 1MWto common, fully balanced input.
Can be used unbalanced.
Output
Connector: 6.3mm 3-pole jack socket.
The insertion of a 2-pole plug will unbalance the output.
Load impedance: 600 Wminimum.
Max output: + 20dBu (balanced output)
Max cable length 1m.
Power requirements
Supply: ±15V regulated
Loading: +52 / -41 mA excluding phantom power load.
Connector: 3 pin Mini - DIN
Max cable length 1m.
Dimensions: Width: 108mm Height: 44mm Depth: 150mm
Weight: 545g
4. GAIN / PHANTOM SELECTION.
The drawing overleaf indicates where the switches are positioned on the
panel. Normal gain is 31 dB, boost is 46 dB.
Phantom voltage is +15 Volt.
Channel A and/or Channel B selection on rear panel overrides remote
control. Remote control is only active when rear panel selection is “off” for
the desired channel.
All functions can be selected separately for each input channel.
Warranty Information
This product carries a 5 year parts and labour warranty which could be invalidated if
these instructions are not followed correctly, or the unit is tampered with in any way.
The 5 year warranty is dated from the time the equipment leaves Ampetronic and NOT
when it is installed.
The MP522 is designed and manufactured in England by Ampetronic Ltd.
DECLARATION OF CONFORMITY
Manufacturer: Ampetronic Ltd.
Address: Northern Road, Newark,
Nottinghamshire, NG24 2ET.
United Kingdom.
Declares that the product:
Description: `Microphone Preamplifier
Type Name: ` MP522
Conforms to the following Directive(s) and Norm(s):
Directive 89/336/EEC
EMC: EN55103-1 (1997)
EN55103-2 (1997)
Safety: EN60065 (1998)
July 2000
L.A. Pieters
Managing Director
Ampetronic Ltd.

010 010 010 010 010 010
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
++ HF
LF
MIC 1 MIC 2 MIC 3 MIC 4 MIC 5 LINE 1 LINE 2
OVERLOAD
POWER
MICROPHONE
PREAMP
MP 522 010
1
2
3
1
2
3
4
5
6
7
8
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
LINE
21
Gain Boost
Phantom
BA
LINE 1
LINE 2OUTPUT BOUTPUT A
POWER REMOTE
MICROPHONE PREAMP MP 522
MIC 1
MIC 2
MIC 3
MIC 4
MIC 5
Designed and Manufactured in England by AMPETRONIC Ltd.
Line-level input
Connector:
6.3mm 3-pole jack socket
Channel gain: 6 dB at max gain position.
Frequency response; ±1 dB 20 Hz - 20 KHz.
Input overload: +20dBu
Input impedance: each side 1MWto common, fully balanced input.
Can be used unbalanced.
Output
Connector: 6.3mm 3-pole jack socket.
The insertion of a 2-pole plug will unbalance the output.
Load impedance: 600 Wminimum.
Max output: + 20dBu (balanced output)
Max cable length 1m.
Power requirements
Supply: ±15V regulated
Loading: +52 / -41 mA excluding phantom power load.
Connector: 3 pin Mini - DIN
Max cable length 1m.
Dimensions: Width: 108mm Height: 44mm Depth: 150mm
Weight: 545g
4. GAIN / PHANTOM SELECTION.
The drawing overleaf indicates where the switches are positioned on the
panel. Normal gain is 31 dB, boost is 46 dB.
Phantom voltage is +15 Volt.
Channel A and/or Channel B selection on rear panel overrides remote
control. Remote control is only active when rear panel selection is “off” for
the desired channel.
All functions can be selected separately for each input channel.
Warranty Information
This product carries a 5 year parts and labour warranty which could be invalidated if
these instructions are not followed correctly, or the unit is tampered with in any way.
The 5 year warranty is dated from the time the equipment leaves Ampetronic and NOT
when it is installed.
The MP522 is designed and manufactured in England by Ampetronic Ltd.
DECLARATION OF CONFORMITY
Manufacturer: Ampetronic Ltd.
Address: Northern Road, Newark,
Nottinghamshire, NG24 2ET.
United Kingdom.
Declares that the product:
Description: `Microphone Preamplifier
Type Name: ` MP522
Conforms to the following Directive(s) and Norm(s):
Directive 89/336/EEC
EMC: EN55103-1 (1997)
EN55103-2 (1997)
Safety: EN60065 (1998)
July 2000
L.A. Pieters
Managing Director
Ampetronic Ltd.

1
2
3
4
5
6
7
8
Pin Number Function
1 Microphone 1
2 Microphone 2
3 Microphone 3
4 Microphone 4
5 Microphone 5
6 Line Input 1
7 Line Input 2
8 Common
Selection of Channel A, or B, or both
simultaneously as shown below.
All three options are shown
The 7 channels are controlled separately.
Selection is signal polarity sensitive.
Pins
1 - 7
Pin 8
Common
terminal
Wiring-side view of
8-pin Mini Din Plug
Optional Modes of switching
Select A
Select B
Select A & B
MP522 Remote Switching
Connector Wiring Diagram
UP13501-2
Ampetronic Ltd,
Northern Road, Newark,
Nottinghamshire, NG24 2ET
United Kingdom
Tel: [phone] Fax: [phone]
www.ampetronic.com Email: [email protected]