MPE
™
-S2 MA Series Mic Pre-Amp Module
DESCRIPTION:
The MPE-S2 is an electronically balanced microphone pre-amp module for the MMA Series of Peavey Architectural
Acoustics mixer/amplifiers. It has screwdriver-adjustable pre-amp gain and low-cut filter, Phoenix-style connector for permanent
installation wiring, switchable phantom power, three muting options, and an inverting mute function that mutes the master mic when
no signal is present. The electronic balancing affords a good Common Mode Rejection Ratio (CMRR) at a low cost for short to
medium mic-level cable runs. For extremely long runs, use the MPT Series of transformer-coupled mic pre-amp modules.
AUDIO SPECIFICATIONS
Frequency Response:
20 Hz – 20 kHz, +0/-1 dB
Total Harmonic Distortion:
</= 0.05% @ 1 kHz
Equivalent Input Noise (EIN):
</= -128 dBu
Input CMRR (Common Mode Rejection Ratio):
>60 dB 20 Hz — 20 kHz
Range of Input Level for Normal Out (100 mV):
(0.25 mV to 100 mV) MIC input
(2.5 mV to 1 V) Line input
Minimum Source Impedance:
150 Ω
Input Impedance:
2.2 kΩ
CONTROL SPECIFICATIONS
Pre-amp Gain Control:
0 dB to 53 dB (screwdriver adjustable)
Low-cut control:
Adjustable shelving type, low-cut filter with a corner
frequency of 125 Hz
Mute Functions:
• Mute master select for mute bus 1 and mute bus 2
(PC board jumper)
• Mute slave select for mute bus 1 and mute bus 2
(PC board jumper)
• Mute slave inversion is used to reverse the slave operation of
the module (see Inverting Slave Mode on the back page).
Phantom Power:
Switchable 24 VDC (PC board jumper)
GENERAL SPECIFICATIONS
Dimensions:
3.07" H x 1.38" W x 3.46" D
(77.97 mm x 35.05 mm x 87.88 mm)
Net Weight:
2.6 oz. (4.55 g.)
Power consumption:
336 mW (14 mA @ 24 VDC) supplied by the MMA
mixer/amplifier
Finish:
Grey powder-coat painted steel on mounting panel
FEATURES:
• Modular construction
• Economical electronically balanced input circuitry
• Screwdriver adjustable pre-amp gain
• Screwdriver adjustable low-cut filter
• Phoenix-style connector
• Switchable 24 VDC phantom power
• Mute master function selectable between two mute buses
• Mute slave function selectable between two mute buses
• Mute slave inversion function to mute a master mic with no signal
present
APPLICATIONS:
• Retail outlets
• Auditoriums
• Gymnasiums
• Paging systems
• Foreground music systems
• Background music systems
• Hotel meeting rooms
• Houses of worship
• Conference centers
• Civic centers
MPE S2 Block Diagram
