Crest Audio MA 540 Specifications

Specifications
MA 540 mixer/amplifier
power output
o u t p u t s
channel 1 and 2 inputs
channels 3-5 inputs
i n s e r t s
frequency response
signal-to-noise ratio
tone controls
c o n t r o l s
power supply
dimensions
net weight
Architects' & Engineers' Specifications: music "ducking" threshold and hold time adjustments.
The mixer amplifier shall have five input channels each with Channels three through five shall be configured for use as
assignment capability to four independent powered zones. background music feeds with dual (paralleled) RCA jacks
Each channel shall contain low and high frequency equal- and detachable screw terminal inputs (high and low-Z). All
ization, a level control, 48 Volt hantom power, signal pres- five channels, however, are capable of being used with mic
ence LED and zone assignment switches. or line level sources.
Channels one and two shall be configured for paging with Each zone shall have a master level control, signal presence
balanced low-Z XLR and detachable screw terminal block and clipping LED indicators, and detachable screw terminal
inputs (high and low-Z). These channels shall also have connections for preamp output/power amp input and bal-
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.
9/5/01
v.1.5
MA TM 540 Mixer / Amplifier
at 35 W RMS continuous and shall provide a 4 Ohm direct
output and transformer isolated 8 Ohm, 25 V and 70 V out-
puts. The unit shall be packaged in a rugged metal chassis
5 1/4" high, 19" wide and 15" deep, and shall weigh 34
pounds. The unit shall be rack mountable and will fit in a
standard 19" rack requiring three rack spaces. The unit shall
operate from 120 V AC 60 Hz power and consume no more
than 375 Watts. The unit shall meet or exceed all the pub-
lished specifications.
Crest Audio Inc.
16-00 Pollitt Dr. Fair Lawn, NJ 07410
TEL: 201.909.8700 FAX: 201.909.8744
www.crestaudio.com
*A4500018*
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
MA TM 540
Mixer / Amplifier
S E R I E S
Description
The Crest MA 540 is a five-channel mixing sys-
tem with assign-ment capability to four independ-
ent 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 offer-
ing 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 detach-
able screw terminal connections for preamp
out/power amp in and balanced line output. Each
zone power amp is rated at 35 W PMS and pro-
vides 4 Ohms (direct output), 8 Ohms, 25 V and
70 V (transformer isolated outputs).