manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. Crest Audio
  6. •
  7. Amplifier
  8. •
  9. Crest Audio PRO SERIES User manual

Crest Audio PRO SERIES User manual

Product Information
MEYER-COMPATIBLE
POWER AMPLIFIERS
The Crest Audio models MA5850, MA9130, and MA7120
Professional power amplifiers are specifically designed in close
cooperation with Meyer Sound Laboratories to meet the needs of
the European Meyer Sound loudspeaker user.
Meeting the most stringent requirements of professional users in
the concert and permanent installation markets, the MA5850,
MA7120, and MA9130 present a no-compromise approach to
electrical design and mechanical construction
Based on the Crest Audio Professional Series 4801 power ampli-
fier, the MA5850 contains custom circuitry to limit output to
58V RMS per channel, effectively preventing driver over-excur-
sion on the models for which it is intended. As the power supply
of the MA5850 is capable of much greater output, this design
also reduces possible damage from clipped waveforms. The
MA5850 is specifically designed as a Meyer Type 1 power
amplifier, and the gain setting responds to Meyer recommenda-
tions being set at 23 dB.
The MA9130 is based on the Crest Audio Professional Series
8001 power amplifier, using a custom designed, low noise two
speed fan and custom circuitry for operation as a Meyer Type 2
Power Amplifier. The MA9130 gain setting also responds to
Meyer recommendations being set at 23 dB.
The MA7120, based on the Crest Audio Professional Series 6001
and 7001 power amplifiers, is intended for bridged mode opera-
tion, with a voltage gain of 6.3 (+16 dB). It has been specifically
designed to meet the highest power requirements as a Meyer
Type 3 power amplifier.
Specifications subject to variation due to production tolerances. * Continuous sine wave power is limited by current rating of front panel circuit breaker and IGM circuit.
Power
Specifications
8 Ohm Stereo
4 Ohm Stereo
2 Ohms Stereo
8 Ohms Bridged
4 Ohms Bridged
20 Hz-20 kHz,
<0.1% THD*
300 Watts
480 Watts
N/A
960 Watts
N/A
EIA, @ 1 kHz,
<0.05% THD
400 Watts
575 Watts
N/A
1150 Watts
N/A
20 Hz-20 kHz,
<0.1% THD*
720 Watts
1200 Watts
1400 Watts
2250 Watts
2800 Watts
EIA, @ 1 kHz,
<0.05% THD
750 Watts
1225 Watts
1400 Watts
2450 Watts
2800 Watts
20 Hz-20 kHz,
<0.1% THD*
N/A
N/A
N/A
975 Watts
1100 Watts
EIA, @ 1 kHz,
<0.05% THD
N/A
N/A
N/A
1150 Watts
1200 Watts
Type 1 - MA5850 Type 3 - MA7120
Type 2 - MA9130
®Crest Professional Series Amplifiers are
fully compatible with the NexSys
Computer Controlled Audio system.
The power amplifier shall have two channels and
deliver a limited maximum of 575 watts at 4
ohms, 1kHz. • The amplifier shall incorporate pro-
tection circuitry against output short circuits, DC
voltage on outputs, thermal overload, and load
protection due to any form of amplifier failure. It will include imped-
ance sensing circuitry, an RMS clip limiter, and AutoRamp signal
control. The amplifier shall have a voltage gain of 23dB with an input
sensitivity of 3.5V for 300W at 8 ohms. The hum and noise level
shall be greater than 100 dB below rated output, “A” weighted. •
Intermodulation distortion shall be less than 0.05 % from 250 watts to
full rated power. The amplifier shall have a class AB output stage
with a modulated class H power supply. The frequency response shall
be greater than 20Hz-20kHz, +0, -.3dB at rated power. • The amplifi-
er will operate at 220/240 volts, 50Hz AC. Maximum current draw at
240V shall not exceed 10 amperes, both channels driven continuously
into a 4 ohm resistor. • Front panel indicators shall include Active,
Temp/DC, Signal Present and Clip/Limit LED’s for each channel.
Front panel gain pots shall be recessed and detented. • Input connec-
tors shall be XLR-type. Output connectors shall be 5-way output
binding posts. Octal Sockets for optional accessory modules and a
signal/ground lift jumper shall be provided. • The packaging of the
amplifier shall allow for standard rack mounting without requiring
space between similar units. Dimensions shall be 3.5" (8.89cm) high
x 19" (48.26cm) wide x 15" (38.10cm) deep. The amplifier shall have
a net weight of 21.8kg (48lbs.) net. The amplifier shall be designated
the Crest Audio Model MA5850
The power amplifier shall be designed to be
used in bridged mode, and deliver 1100 watts
into a 4 ohm load. • The amplifier shall incor-
porate protection circuitry against output short
circuits, DC voltage on outputs, thermal over-
load, and load protection due to any form of amplifier failure. It will
include impedance sensing circuitry, an RMS clip limiter, and
AutoRamp signal control. The amplifier shall have a voltage gain of
16dB with an input sensitivity of 10.5V for 1100W at 4 ohms bridged.
The hum and noise level shall be greater than 100 dB below rated out-
put, “A” weighted. • Intermodulation distortion shall be less than 0.05 %
from 250 watts to full rated power. The amplifier shall have a class AB
output stage with a modulated class H power supply. The frequency
response shall be greater than 20Hz-20kHz, +0, -.3dB at rated power. •
The amplifier will operate at 220/240 volts, 50Hz AC. Maximum cur-
rent draw at 240V shall not exceed 15 amperes, both channels driven
continuously into a 4 ohm resistor. • Front panel indicators shall include
Active, Temp/DC, Signal Present and Clip/Limit LED’s for each chan-
nel. Front panel gain pots shall be recessed and detented. • Input con-
nectors shall be XLR-type. Output connectors shall be 5-way output
binding posts. Octal Sockets for optional accessory modules and a sig-
nal/ground lift jumper shall be provided. • The packaging of the amplifi-
er shall allow for standard rack mounting without requiring space
between similar units. Dimensions shall be 3.5" (8.89cm) high x 19"
(48.26cm) wide x 15" (38.10cm) deep. The amplifier shall have a net
weight of 23.2kg (51lbs.) net. The amplifier shall be designated the
Crest Audio Model MA7120
Architect’s
Specifications
Type 1
MA5850
The power amplifier shall have 2 channels and
deliver a limited maximum of 1225 watts at 4
ohms, 1kHz. The amplifier shall incorporate
protection circuitry against output short cir-
cuits, DC voltage on outputs, thermal over-
load, and load protection due to any form of amp failure. It will include
impedance sensing circuitry, an RMS clip limiter and Auto-Ramp signal
control. The amplifier shall have a voltage gain of 23dB with an input
sensitivity of 1.75V for rated power at 4 ohms. The hum and noise level
shall be greater than 100 dB below rated output, “A” weighted.
Intermodulation distortion shall be less than 0.1% from 250 milliwatts to
full rated power. The amplifier shall have a class H output stage with a
modulated power supply. The frequency response shall be greater than
20Hz-20kHz, +0, -.3dB at rated power. The amplifier will operate at
220/240 volts, 50-60 Hz AC (configured at factory). Maximum current
draw at 240V shall be no greater than 19A, both channels driven contin-
uously into 2 ohm resistance. Front panel indicators shall include
Active, Temp/DC, Signal Present and Clip/Limit LED’s for each chan-
nel. Front panel attenuators shall be recessed and detented. Input con-
nectors shall be XLR type, one female per channel. Output connectors
shall be 5-way binding posts, two pair per channel. Octal sockets for
optional accessary modules and a signal/ground lift jumper shall be pro-
vided. The packaging of the amplifier shall allow for standard rack
mounting without requiring space between similar units. Dimensions
shall be 19" (48.26cm) wide, 5.5" (13.3cm) high and 15" (38.1cm) deep.
It shall weigh 36.32kg (80 lbs.) net. The amplifier shall be designated
the Crest Audio Model MA9130
Architect’s
Specifications
Type 2
MA9130
Architect’s
Specifications
Type 3
MA7120
Crest Audio reserves the right to make changes or improvements in manufacturing or design which may affect specifications.
IN BIN A
PIN 3+
A
B
STEREO
BRIDGE
PARALLEL
SIGNAL
GROUND
LIFT
--
OUT A
+
--
OUT A
+
+
BRIDGE
--
+
BRIDGE
--
+
OUT B
--
+
OUT B
--
USA ONLY
MODEL #
8001 30 AMPS
MAXIMUM
INPUT CURRENT
@ 120V,60Hz
OUTPUT POWER
IN WATTSPER
CHANNEL, 2Ω
1400W
OUTPUT - CLASS 1WIRING MAYBE USED
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PASOUVRIR
Designed & manufactured in the USA by:
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSE THIS EQUIPMENTTO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE, NE PLACEZ PASCET APPAREIL SOUS LA PLUIE OU Á
L'HUMIDITÉ
PUSHPUSH
IN A
IN B
PIN 3+
A
B
SIGNAL
GROUND
LIFT
STEREO
BRIDGE
PARALLEL OUTA
OUT B
USA ONLY
MODEL #
4801 18 AMPS
MAXIMUM
INPUT CURRENT
@ 120V,60Hz
OUTPUT POWER
IN WATTSPER
CHANNEL, 2Ω
600W
OUTPUT - CLASS 2 WIRING MAYBE USED
6001 21 AMPS 720W
Designed & manufactured in the USAby:
CrestAudio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
AVIS: RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSETHIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE,NE PLACEZ PAS CET APPAREILSOUS LA PLUIE OU Á
L'HUMIDITÉ
+
--
BRIDGE
PUSH
PUSH
IN
A
IN
B
PIN
3+
A
B
SIGNAL
GROUND
LIFT
USA ONLY
MODEL # MAXIMUM
INPUT CURRENT
@ 120V,60Hz
OUTPUT POWER
IN WATTSPER
CHANNEL, 2Ω
OUTPUT - CLASS 2 WIRING MAYBE USED
7001 21 AMPS 850W
Designed & manufactured in the USAby:
CrestAudio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
AVIS: RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR
WARNINGTO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT
EXPOSETHIS EQUIPMENT TO RAIN OR MOISTURE.
ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC
ÉLECTRIQUE,NE PLACEZ PAS CET APPAREILSOUS LA PLUIE OU Á
L'HUMIDITÉ
+
--
BRIDGE
STEREO
BRIDGE
PARALLEL OUTA
OUT B
PUSHPUSH
Crest Audio GmbH
Hausinger Str. 6, D-40764, Langenfeld, Germany
Tel: 49+ (0) 2173.915450 Fax: 49+ (0) 2173.168247
8ΩStereo Power
4ΩStereo Power
8ΩBridged Mono Power
2ΩStereo Power
4ΩBridged Mono Power
Max RMS Output Voltage
(each channel)
Peak Output Voltage
(each channel)
Frequency Response
(+0 / -0.3dB, 1W/8Ω)
Power Bandwidth
(rated power at 4Ω, 1% THD+N)
Protection Circuitry
THD+N
(rated power at 8Ω, 1kHz)
SMPTE IMD
(rated power at 8Ω, 60Hz & 7kHz)
Slew Rate
Damping Factor
(10-400Hz at 8Ω)
Input CMRR
(1kHz)
Input Sensitivity
(rated power at 4Ω)
Voltage Gain
Input Impedance
(balanced)
Hum and Noise
(“A” weighted, full power, 4Ω)
Crosstalk
(“A” weighted, full power, 4Ω)
Class
Input Connectors
(per channel)
Output Connectors
(per channel)
Filter Storage
Power Supply
(factory configured)
Idle Current Draw
(240V)
1/8 Power Curr. Draw
(typical music, 120V/4Ω)
1/3 Power Curr. Draw
(continuous music,
120V/4Ω)
Max Curr. Draw
(circuit breaker rating, 120V/4Ω)
Thermal Emissions
(1/8 Power, 4Ω)
Thermal Emissions
(1/3 Power, 4Ω)
Cooling
Controls
LED Indicators
(per channel)
Construction
Dimensions
(Height x Width x Depth)
Gross Weight, Net Weight
Warranty
MA5850 MA9130 MA7120
1kHz, <0.05% THD+N 20Hz-20kHz, <0.1% THD+N
400W 300W
575W 480W
1150W 960W
NR NR
NR NR
58V
82V
20 Hz-20 kHz, -3dB @ 53kHz
20 Hz-20 kHz, +0/-0.2dB
Clip Limit, IGM, AutoRamp, High Temp, short-circuit, DC
voltage, turn-on/off transient, sub/ultrasonic input.
<0.05%
<0.015%
13V / µs
400:1
>60 dB
3.5V RMS
X14 (+23dB)
>20kΩ
>-100 dB
>-60dB
H
Female XLR (pin 3+), Octal Socket
5-way output binding posts
80,000 µF
100V-240V, 50-60Hz
.55A
2.8A
5.75A
10.0A
1803 BTU/hr
3385 BTU/hr
Rear to front tunnel heatsink, variable speed DC fan
Front panel: 2 attenuators, circuit breaker/power switch;
Rear panel: mode switch, signal ground lift jumper.
Clip/Limit, Signal, Temp/DC, Active
16 ga. single piece steel chassis, .187" (5mm) alum. front panel
3.5"x19"x15" (16" to rear ears)
89mm x 483mm x 381mm (406mm to rear ears)
54.0 lbs (24.52 kg.), 49.0 lbs (22.25 kg.)
5 years, parts and labor†
1kHz, <0.03% THD+N 20Hz-20kHz, <0.1% THD+N
NR NR
NR NR
1150W 975W
NR NR
1200W 1100W
140V
198V
20 Hz-20 kHz, -3dB @ 53kHz
20 Hz-20 kHz, +0/-0.2dB
Clip Limit, IGM, AutoRamp, High Temp, short-circuit, DC
voltage, turn-on/off transient, sub/ultrasonic input.
<0.03%
<0.5%
13V / µs
400:1
>60 dB
10.5V RMS for 1100W at 4Ωbridged
X6.3 (+16dB) bridged
>20kΩ
>-100 dB
>-60dB
H
Female XLR (pin 3+), Octal Socket
5-way output binding posts
120,000 µF
100V-240V, 50-60Hz
0.7A
3.9A
7.75A
15.0A
2503 BTU/hr
4505 BTU/hr
Rear to front tunnel heatsink, 2 variable speed DC fans
Front panel: 2 attenuators, circuit breaker/power switch;
Rear panel: mode switch, signal ground lift jumper.
Clip/Limit, Signal, Temp/DC, Active
16 ga. single piece steel chassis, .187" (5mm) alum. front panel
3.5"x19"x15" (16" to rear ears)
89mm x 483mm x 381mm (406mm to rear ears)
57 lbs. (25.88 kg.), 52 lbs. (23.60 kg.)
5 years, parts and labor†
1kHz, <0.025% THD+N 20Hz-20kHz, <0.1% THD+N
750W 720W
1225W 1200W
2450W 2250W
1400W 1400W
2800W 2800W
91V
129V
20 Hz-20 kHz, -3dB @ 53kHz
20 Hz-20 kHz, +0/-0.2dB
Clip Limit, IGM, AutoRamp, High Temp, short-circuit, DC
voltage, turn-on/off transient, sub/ultrasonic input.
<0.025%
<0.1%
20V / µs
400:1
>60 dB
1.75V RMS
X14 (+23 dB)
>20kΩ
>-100 dB
>-60dB
H
Female XLR (pin 3+), Octal Socket
2 pair 5-way output binding posts
70,000 µF
100V-240V, 50-60Hz
0.8A
5.4A
10.9A
19.0A
3380 BTU/hr
6140 BTU/hr
Rear to front tunnel heatsink, low-noise 2-speed fan
Front panel: 2 attenuators, circuit breaker/power switch;
Rear panel: mode switch, signal ground lift jumper.
Clip/Limit, Signal, Temp/DC, Active
14 ga. steel chassis, 0.25" (6mm) aluminum front panel
5.25"x19"x15" (16" to rear ears)
133mm x 483mm x 381mm (406mm to rear ears)
85 lbs. (38.6 kg.), 80 lbs. (36.0 kg.)
5 years, parts and labor†
† USA, Canada, U.K., and many other countries. Power figures are watts per channel, both channels driven. Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications.
Crest Audio specification literature is available in downloadable PDF file format; visit our website at http://www/crestaudio.com. ©1996 Crest Audio Inc.
MA5850 / MA9130 / MA7120 POWER AMPLIFIERS
SPECIFICATIONS
v. 2.0 10/22/96 B5000004
Crest Audio Inc.
100 Eisenhower Dr., Paramus NJ 07652 USA
TEL: 201.909.8700 FAX: 201.909.8744
http://www.crestaudio.com
Printed in USA

This manual suits for next models

3

Other Crest Audio Amplifier manuals

Crest Audio MULTIPLEX 900 User manual

Crest Audio

Crest Audio MULTIPLEX 900 User manual

Crest Audio MA 540 User manual

Crest Audio

Crest Audio MA 540 User manual

Crest Audio PRO SERIES 7001 User manual

Crest Audio

Crest Audio PRO SERIES 7001 User manual

Crest Audio V SERIES User manual

Crest Audio

Crest Audio V SERIES User manual

Crest Audio SmarTube ST2 User manual

Crest Audio

Crest Audio SmarTube ST2 User manual

Crest Audio UA 2050 User manual

Crest Audio

Crest Audio UA 2050 User manual

Crest Audio PRO SERIES 6001 User manual

Crest Audio

Crest Audio PRO SERIES 6001 User manual

Crest Audio LA 1201 User manual

Crest Audio

Crest Audio LA 1201 User manual

Crest Audio CKV400 User manual

Crest Audio

Crest Audio CKV400 User manual

Crest Audio Pro Series 8002 Quick start guide

Crest Audio

Crest Audio Pro Series 8002 Quick start guide

Crest Audio CPX Series User manual

Crest Audio

Crest Audio CPX Series User manual

Crest Audio 8002 User manual

Crest Audio

Crest Audio 8002 User manual

Crest Audio VS SERIES -  2 Instruction Manual

Crest Audio

Crest Audio VS SERIES - 2 Instruction Manual

Crest Audio FCV220 User manual

Crest Audio

Crest Audio FCV220 User manual

Crest Audio HD12 User manual

Crest Audio

Crest Audio HD12 User manual

Crest Audio CKX800 User manual

Crest Audio

Crest Audio CKX800 User manual

Crest Audio FXA901 User manual

Crest Audio

Crest Audio FXA901 User manual

Crest Audio PRO SERIES 4801 User manual

Crest Audio

Crest Audio PRO SERIES 4801 User manual

Crest Audio PRO7200 User manual

Crest Audio

Crest Audio PRO7200 User manual

Crest Audio MULTIPLEX 1500 User manual

Crest Audio

Crest Audio MULTIPLEX 1500 User manual

Crest Audio PRO SERIES 10004 User manual

Crest Audio

Crest Audio PRO SERIES 10004 User manual

Crest Audio CM SERIES User manual

Crest Audio

Crest Audio CM SERIES User manual

Crest Audio PRO SERIES 7301 User manual

Crest Audio

Crest Audio PRO SERIES 7301 User manual

Crest Audio VSL 1500 Instruction manual

Crest Audio

Crest Audio VSL 1500 Instruction manual

Popular Amplifier manuals by other brands

Whadda WPI446 user manual

Whadda

Whadda WPI446 user manual

Goldmund MIMESIS 29M Millennium Edition user manual

Goldmund

Goldmund MIMESIS 29M Millennium Edition user manual

Cloud CA Series Installation and user guide

Cloud

Cloud CA Series Installation and user guide

IQBoard IQSoundBox user manual

IQBoard

IQBoard IQSoundBox user manual

Audio Analogue PRIMO owner's manual

Audio Analogue

Audio Analogue PRIMO owner's manual

ELECTROCOMPANIET ECI3 owner's manual

ELECTROCOMPANIET

ELECTROCOMPANIET ECI3 owner's manual

Creek Audio OBH 21 operating instructions

Creek Audio

Creek Audio OBH 21 operating instructions

Monoprice 16154 user manual

Monoprice

Monoprice 16154 user manual

Directed Audio 750d 1500d owner's manual

Directed Audio

Directed Audio 750d 1500d owner's manual

Soundstream Reference Series 705 installation guide

Soundstream

Soundstream Reference Series 705 installation guide

CAP Wireless PS009900 operating manual

CAP Wireless

CAP Wireless PS009900 operating manual

Hearing Products International EchoVoice EV7 user manual

Hearing Products International

Hearing Products International EchoVoice EV7 user manual

XTZ Sub Amp 1 user manual

XTZ

XTZ Sub Amp 1 user manual

Opvimus MA-215SIP quick guide

Opvimus

Opvimus MA-215SIP quick guide

Plinius INSPIRE 880 Driver installation

Plinius

Plinius INSPIRE 880 Driver installation

Alcad AM-270 manual

Alcad

Alcad AM-270 manual

Soundstream Picasso Owners and installation manual

Soundstream

Soundstream Picasso Owners and installation manual

Electronics & Innovation 100S1 quick start guide

Electronics & Innovation

Electronics & Innovation 100S1 quick start guide

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.