Crest audio MA7120, MA9130, PRO, MA5850 DATASHEET

MEYER-COMPATIBLE

POWER AMPLIFIERS

Product Information

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 amplifier, the MA5850 contains custom circuitry to limit output to 58V RMS per channel, effectively preventing driver over-excursion 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 recommendations 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 operation, 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.

Crest Professional Series Amplifiers are fully compatible with the NexSys Computer Controlled Audio system.

Power

Specifications

8 Ohm Stereo 4 Ohm Stereo

2 Ohms Stereo 8 Ohms Bridged 4 Ohms Bridged

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.

Type 1 - MA5850

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

Type 2 - MA9130

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

Type 3 - MA7120

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

Max RMS Output Voltage

Peak Output Voltage

Frequency Response

Power Bandwidth

THD+N

SMPTE IMD

Damping Factor

Input Sensitivity

Hum and Noise

Crosstalk

Output Connectors

Power Supply

1/8 Power Curr. Draw

1/3 Power Curr. Draw

Max Curr. Draw

Thermal Emissions Thermal Emissions

Dimensions

8Ω Stereo Power 4Ω Stereo Power

8Ω Bridged Mono Power

2ΩStereo Power

4Ω Bridged Mono Power

(each channel) (each channel)

(+0 / -0.3dB, 1W/8Ω)

(rated power at 4Ω, 1% THD+N)

Protection Circuitry

(rated power at 8Ω, 1kHz)

(rated power at 8Ω, 60Hz & 7kHz)

Input Impedance

(“A” weighted, full power, 4Ω) (“A” weighted, full power, 4Ω)

Input Connectors

Idle Current Draw

(circuit breaker rating, 120V/4Ω)

LED Indicators

Gross Weight, Net Weight

Slew Rate

(10-400Hz at 8Ω)

Input CMRR

(typical music, 120V/4Ω)

(Height x Width x Depth)

(1kHz)

(rated power at 4Ω )

Voltage Gain

(balanced)

Class

(per channel) (per channel)

Filter Storage

(factory configured)

(240V)

(continuous music,

120V/4Ω)

(1/8 Power, 4Ω) (1/3 Power, 4Ω)

Cooling

Controls

(per channel)

Construction

Warranty

† 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.

STEREO

PARALLEL

BRIDGE

IN A

PUSH

IN B

PUSH

PIN 3+

MA5850 / MA9130 / MA7120 POWER AMPLIFIERS

SPECIFICATIONS

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†

IN A

IN B

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR

WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT

EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á

L'HUMIDITÉ

USA ONLY

MAXIMUM

INPUT CURRENT

MODEL #

@ 120V, 60Hz 4801 18 AMPS 6001 21 AMPS 720W

OUTPUT - CLASS 2 WIRING MAY BE USED

OUTPUT POWER IN WATTS PER

CHANNEL, 2Ω

OUT A

BRIDGE

OUT B

SIGNAL GROUND

LIFT

Designed & manufactured in the USA by:

600W

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

PUSHPUSH

PIN 3+

PARALLEL

BRIDGE

STEREO

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†

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR

WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT

EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC

ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á

L'HUMIDITÉ

USA ONLY

MAXIMUM

OUTPUT POWER

INPUT CURRENT

IN WATTS PER

MODEL #

@ 120V, 60Hz

CHANNEL, 2Ω

8001 30 AMPS

1400W

OUTPUT - CLASS 1 WIRING MAY BE USED

Designed & manufactured in the USA by:

Crest Audio Inc.

100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

-OUT A

OUT A

BRIDGE

OUT B

STEREO

SIGNAL GROUND

LIFT

BRIDGE

PUSHPUSH

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 4Ω bridged 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†

PARALLEL

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR

WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT

EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á

L'HUMIDITÉ

USA ONLY

MAXIMUM

INPUT CURRENT

MODEL #

@ 120V, 60Hz

7001 21 AMPS 850W

OUTPUT - CLASS 2 WIRING MAY BE USED

OUTPUT POWER IN WATTS PER

CHANNEL, 2Ω

SIGNAL GROUND

LIFT

Designed & manufactured in the USA by:

Crest Audio Inc. 100 Eisenhower Dr.

Paramus, New Jersey 07652 USA

OUT A

BRIDGE

OUT B

Architect’s Specifications Type 1 MA5850

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 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 amplifier 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 connectors 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 have two channels and deliver a limited maximum of 575 watts at 4 ohms, 1kHz. • The amplifier shall incorporate protection circuitry against output short circuits, DC voltage on outputs, thermal overload, and load

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

v. 2.0 10/22/96 B5000004

Architect’s Specifications Type 2 MA9130

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 continuously into 2 ohm resistance. Front panel indicators shall include Active, Temp/DC, Signal Present and Clip/Limit LED’s for each channel. Front panel attenuators shall be recessed and detented. Input connectors 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 provided. 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

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 circuits, DC voltage on outputs, thermal over-

Crest Audio GmbH

Hausinger Str. 6, D-40764, Langenfeld, Germany

Tel: 49+ (0) 2173.915450 Fax: 49+ (0) 2173.168247

Architect’s Specifications Type 3 MA7120

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 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 amplifier will operate at 220/240 volts, 50Hz AC. Maximum current 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 channel. Front panel gain pots shall be recessed and detented. • Input connectors 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 23.2kg (51lbs.) net. The amplifier shall be designated the Crest Audio Model MA7120

The power amplifier shall be designed to be used in bridged mode, and deliver 1100 watts into a 4 ohm load. • The amplifier shall incorporate protection circuitry against output short circuits, DC voltage on outputs, thermal over-

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