WMA™ 4300 Wall Mount Amp

4 Channel 300W Wall Mount Mixer Amplifier


The Crest Audio® WMA™ 4300 wall mount amplifier provides a unique, simple and complete solution to designers, contractors and installers who wish to place a full-featured audio mixing and amplification system in a convenient and secure location. The WMA 4300 provides a feature-packed and reengineered mixer mated to a Class D power amplifier with higher power and efficiency. The simple and straightforward front-panel controls, inputs and output can be concealed and secured behind the optional steel back box for tamper-free, worry-free operation. The WMA 4300 is also designed to be
backward compatible with Peavey Commercial Audio’s legacy wall-mount amplifier back box for ease and convenience in replacing earlier products with a more effi cient Class D amplifier platform.

The WMA 4300 combines a four-input mixer with a highly efficient Class D 300 watts mono amplifier. Each of the four inputs can handle a variety of input signals, including microphone, balanced line level and mono or stereo unbalanced line sources. The WMA 4300 provides a simple paging solution with priority mute level sensing controls on input 1. Inputs 1 and 2 are electronically balanced and provide mic preamp gain controls and switched 48V phantom power for microphones. Inputs 3 and 4 support balanced and unbalanced line inputs with switch selectable Euro-style connectors or dual RCA inputs.

The WMA 4300 wall mount amplifier can drive directly a low impedance loudspeaker with its 4 Ohms direct output or a 25V, 70V or 100V constant voltage loudspeaker circuit. Bass and treble controls are provided to allow equalization of the output signal in any installation environment.

The WMA 4300 is housed in a dedicated vertical mount chassis that may be surface or flush mounted when mated with its back box. The back box may be roughed-in or installed during construction and the WMA 4300 installed once construction is finished.

The WMA 4300 has a voltage selector switch for 120V or 240VAC operation.

Features WMA 4300

• 300 Watts Class D power amplifier

• SPS speaker protection system

• High-pass filter to protect speaker transformers from low frequency overload

• Dedicated vertical chassis designed for wall or flush mounting with accessory back box

• Mates to legacy Peavey Commercial Audio wall-mount amplifier back box (00324930)

• Four input level controls with signal/clip/mute LEDs

• Power, signal and SPS indication LEDs

• Master volume

• Four electronically balanced Mic/Line inputs

• Inputs 1 and 2 are electronically balanced with Euro connectors and preamp gain control

• Inputs 1 and 2 have phantom power with switch

• Inputs 3 and 4 have switch to select balanced Euro connector or dual RCA connectors

• Inputs 3 and 4 have rear panel preamp gain controls

• Input 1 Level sensing muting of inputs 2-4 with threshold/defeat control

• Balanced output with level control

• Switchable Mix output or input 4 direct output

• Output is not affected by mute or channel level if channel 4 is selected

• Preamp output, power amp input for inserting processing with Bypass switch

• 4 Ω, 25V, 70V and 100V outputs

• Bass and Treble controls

• Power switch

• Line voltage switch for 120V or 240VAC operation

Additional information

Channels (Input)


Channels (Output)


Power per Channel @ 4 Ω

300 W

Power per Channel @ 25V

300 W

Power per Channel @ 70V

300 W

Power per Channel @ 100V

300 W


Class D

Minimum Load Impedance

4 Ω

Frequency Response

-3 dB, 65 Hz – 20 kHz; +0

Phantom Power

Yes (48V)

Mute Groups

Priority / Mute All



Input Connectors

4 x 3-pin Euro Connector & 1 x Dual RCA

Output Connectors

1 x 5-pin Srew Terminal


Net Weight

24.4 lbs (11.00 kg)

Product Height

20.56" (522 mm)

Product Width

15.76" (400 mm)

Product Depth

4.85" (123 mm)

AC Power Input

Dual Voltage – 120 or 220-240VAC 50/60 Hz



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