Crest audio MA540 SPECIFICATIONS

Specifications		MATM 540 Mixer / Amplifier
	MA 540 mixer/amplifier
power output	35 W per zone at less than 1% (60 Hz to 20 kHz with all four channels operating)
outputs speaker :		4 Ohms (direct), 8 Ohms, 25 V and 70 V (isolated)
	line :	600 Ohms balanced, 1 V RMS
channel 1 and 2 inputs	mic :	2k Ohms, -54 dBu (1.4 mV, balanced)
	line :	>50k Ohm, -18 dBu (100 mV, balanced)
	XLR mic :	2k Ohm, -54 dBu (1.5 mV, balanced)
channels 3-5 inputs	mic :	2k Ohm, -54 dBu (1.5 mV, unbalanced)
	line :	>50 k Ohm, -18 dBu (100 mV, unbalanced)
	RCA :	>50 k Ohm, -18 dBu (100 mV, unbalanced)
inserts send :		1k Ohm, 2.21 dBu (1 Volt, unbalanced)
	return :	10k Ohm, 2.21 dBu (1 Volt, unbalanced)
frequency response 50 Hz to 20 kHz, +0/-2 dB (transformer)
signal-to-noise ratio	residual :	90 dB below rated power (channel down, master full up)
	line inputs :	90 dB below rated power (controls nominal, 2k Ohm terminated)
	mic inputs :	82 dB below rated power (controls nominal, 150 Ohm terminated)
tone controls	low EQ :	±10 dB at 100 Hz
	high EQ :	±10 dB at 10 Hz
controls	ch. 1 and 2 : level, low EQ, high EQ, four assign switches, signal presence, LED muting
		threshold and adjustable release time.
	ch. 3-5 :	level, low EQ, high EQ, four assign switches and signal presence LED
	masters 1-4 : level, signal presence and clipping LED
power supply internal, 120 V AC at 60 Hz
	375 Watts all channel at full power
	175 Watts all channel at 1/8 power
	five-amp fuse
dimensions (H x W x D) 5.25" x 19" x 15" (13.3 cm x 48.3 cm x 38.1 cm)
net weight 34 pounds (15.4 kg)
Architects’ & Engineers’ Specifications:		music “ducking” threshold and hold time adjustments.	at 35 W RMS continuous and shall provide a 4 Ohm direct
The mixer amplifier shall have five input channels each with		Channels three through five shall be configured for use as	output and transformer isolated 8 Ohm, 25 V and 70 V out-
assignment capability to four independent powered zones.		background music feeds with dual (paralleled) RCA jacks	puts. The unit shall be packaged in a rugged metal chassis
Each channel shall contain low and high frequency equal-		and detachable screw terminal inputs (high and low-Z). All	5 1/4” high, 19” wide and 15” deep, and shall weigh 34
ization, a level control, 48 Volt hantom power, signal pres-		five channels, however, are capable of being used with mic	pounds. The unit shall be rack mountable and will fit in a
ence LED and zone assignment switches.		or line level sources.	standard 19” rack requiring three rack spaces. The unit shall
Channels one and two shall be configured for paging with		Each zone shall have a master level control, signal presence	operate from 120 V AC 60 Hz power and consume no more
balanced low-Z XLR and detachable screw terminal block		and clipping LED indicators, and detachable screw terminal	than 375 Watts. The unit shall meet or exceed all the pub-
inputs (high and low-Z). These channels shall also have		connections for preamp output/power amp input and bal-	lished specifications.
front panel recessed screw driver controls for background		anced line output. Each zone power amplifier shall be rated

Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications.

Crest Audio Inc.

9/5/01

16-00 Pollitt Dr. Fair Lawn, NJ 07410

TEL: [phone] FAX: [phone]

v.1.5

*A4500018*

www.crestaudio.com

MATM 540
Mixer / Amplifier	S E R I E S

Features

•Five input channels

•Four zones

•35 Watt output per zone

•Two XLR low-Z mic inputs (balanced)

•Detachable input connector for low-Z mic and high-Z line on each channel

•Signal LED indicator for each channel

•Channel level control

•Low and high active EQ on each channel

•Four zone assignment switching on each channel

•Front panel adjustable threshold and paging hold on channels 1 and 2

•Four master output level controls with signal and clipping LED indicators

•Detachable preamp output/power amp input connector for each zone

•Each zone output provides a 4)hm direct output and transformer isolated 8 Ohm, 25 and 70 Volt outputs

•Each zone has 600 Ohm line level balanced output

•19" standard rack-mount package

•Three rack spaces

•Externally accessible main fuse

Description

The Crest MA 540 is a five-channel mixing system with assign-ment capability to four independent powered zones. Each channel offers low and high equalization, channel level control, signal presence LED, 48 Volt phantom power and zone assignment switching. Channels one and two offer low-Z (XLR) and detachable screw terminal microphone inputs (high and low-Z) for paging capability with channel s three through five offering dual (paralleled) RCA jacks and detachable screw terminal inputs (high and low-Z) for use with various music sources. Additionally, channels on and two have recessed screwdriver controls for back-ground music "ducking" threshold and hold-time adjustments.

Each zone has a master level control, signal presence and clipping LED indicator, and detachable screw terminal connections for preamp out/power amp in and balanced line output. Each zone power amp is rated at 35 W PMS and provides 4 Ohms (direct output), 8 Ohms, 25 V and 70 V (transformer isolated outputs).