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Specifications

8

Stereo Power † 

4

Stereo Power † 

2

Stereo Power † 

8

Bridged Power † 

4

Bridged Power †

Max RMS Output Voltage 

(each channel)

Peak Output Voltage 

(each channel)

Frequency Response 

(+0/-0.3dB, 1W/8

)

Power Bandwidth 

(Rated power at 4

, 1% THD+N)

TourClass Protection

THD+N 

(rated power at 4

, 1kHz)

SMPTE IMD 

(rated power at 8

, 60Hz & 7kHz)

Damping Factor 

(10-400Hz at 8

)

Input CMRR 

(1 kHz)

Input Sensitivity 

(rated power at 8

)

Voltage Gain

Input Impedance 

(balanced/unbalanced)

Hum & Noise 

(“A” weighted, full power at 4

)

Crosstalk 

(“A” weighted, full power at 4

)

Class

Input Connectors 

(per channel)

Output Connectors 

(per channel)

Filter Storage

Power Supply 

(factory configured)

Idle Current Draw 

(120V)

1/8 Power Curr. Draw 

(typical music, 120V/4

)

1/3 Power Curr. Draw 

(continuous music, 120V/4

)

Max Curr. Draw 

(circuit breaker rating, 120V/4

)

Thermal Emissions

(1/8 Power, 4

Thermal Emissions

(1/3 Power, 4

Cooling

Controls

LED Indicators 

(per channel)

Construction

Dimensions

(Height x Width x Depth to rear rack ears)

Gross Weight, Net Weight

150 Watts

225 Watts

325 Watts

450 Watts

650 Watts

36V

51V

10Hz-20kHz, -3dB @ 165kHz

20Hz-20kHz

ACL, IGM, AutoRamp, short circuit,

DC voltage, turn-on/off transient, current

inrush, sub/ultrasonic input.

<1.0%

<0.05%

>700:1

> - 64dB

.775V

X38.6

>20k

/>10k

-105 dB

> - 60 dB

AB

TRS (tip +) & Barrier Strip

5-way binding posts

44,000  µF

100V-240V, 50-60Hz

1.0A

3.5A

5.2A

8.0A

1300 BTU/hr

1530 BTU/hr

Front to Side, one 110 CFM, 2-Speed fan

Front Panel: 2 attenuators, magnetic circuit

breaker/power switch.

Rear Panel: mode select switch.

1 Clip, 1 Signal per channel,

Protect, Active

14 gauge steel

5.25" x 19" x 12" / 133 x 483 x 305mm

38 lbs. / 17.3 kg., 36 lbs. / 16.3 kg.

250 Watts

450 Watts

550 Watts

900 Watts

1100 Watts

52.3V

74V

10Hz-20kHz, -3dB @ 165kHz

20Hz-20kHz

ACL, IGM, AutoRamp, short circuit,

DC voltage, turn-on/off transient, current

inrush, sub/ultrasonic input.

<1.0%

<0.05%

>1000:1

> - 64dB

1.0 V

X40

>20k

/>10k

-105 dB

> - 60 dB

AB

TRS (tip +) & Barrier Strip

5-way binding posts

38,000 µF

100V-240V, 50-60Hz

2.8A

7.2A

10.4A

15.0A

2000 BTU/hr

2900 BTU/hr

Front to Side,one 110 CFM, 2-Speed fan

Front Panel: 2 attenuators, magnetic circuit

breaker/power switch.

Rear Panel: mode select switch.

1 Clip, 1 Signal per channel,

Protect, Active

14 gauge steel

5.25" x 19" x 12" / 133 x 483 x 305mm

46 lbs. / 20.9 kg., 44 lbs. / 20.0 kg.

400 Watts

750 Watts

1000 Watts

1500 Watts

2000 Watts

70.7V

100V

10Hz-20kHz, -3dB @ 165kHz

20Hz-20kHz

ACL, IGM, AutoRamp, short circuit,

DC voltage, turn-on/off transient, current

inrush, sub/ultrasonic input.

<1.0%

<0.05%

>1000:1

> - 64dB

1.4V

X38.6

>20k

/>10k

-105 dB

> - 60 dB

H

TRS (tip +) & Barrier Strip

5-way binding posts 

50,000 µF

100V-240V, 50-60Hz

1.8A

4.3A

8.5A

21.0A

3100 BTU/hr

4400 BTU/hr

Front to Side, one 110 CFM, 2-Speed fan

Front Panel: 2 attenuators, magnetic circuit

breaker/power switch.

Rear Panel: mode select switch.

1 Clip, 1 Signal per channel,

Protect, Active

14 gauge steel

5.25" x 19" x 13.33" / 133 x 483 x 339mm

49 lbs. / 22.2 kg., 46 lbs / 20.9 kg.

VsL460

VsL900

VsL1500

† 

Power figures are watts per channel, both channels driven, 1kHz, 1% THD.  

Approximate Values  

§ 

Limited by Circuit Breaker  ‡ Active Clip Limiting.

Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications. ©1997 Crest Audio Inc.  8/28/97

Page 8

VsL Series Power Amplifiers

Models VsL460, VsL900, VsL1500

Summary of Contents for VSL 1500

Page 1: ...OWNER S MANUAL PROFESSIONAL POWER AMPLIFIERS ...

Page 2: ...he unit should be periodically blown free of foreign matter 14 Do not remove the cover Removing the cover will expose you to potentially dangerous voltages There are no user serviceable parts inside 15 Connecting amplifier out puts to oscilliscopes or other test equipment while the amplifier is in bridged mode may damage both the amplifier and test equipment 16 Do not drive the inputs with a signa...

Page 3: ... Table of Contents Introduction 2 Unpacking 2 Installation Mounting 2 Front Panel Controls 2 Back Panel Controls Connections 3 Operation 4 Protection Features 5 Service Information 5 Operation Mode Drawings 6 Connection Detail Drawings 7 Technical Specifications 8 ...

Page 4: ...rt especially important in mobile sound systems Because of the cables and connectors on the rear panel a right angle or offset screwdriver or hex key will make it easier to fasten the rear mounting ears to the rails Optional rack mount handles are available from your Crest Audio authorized dealer Front Panel Controls 1 Rack Mounting Ears Two front panel mounting holes are provided on each mounting...

Page 5: ...ors For connection of balanced TRS Input Plugs A diagram showing TRS polarity is shown on drawing 4 Note Unbalanced Tip Sleeve plugs may be used with the balanced TRS connectors The ring terminal or negative input will be connected to ground internally 14 Mode Selection Switch This push button switch configures the amplifier for either Stereo or Bridged Mono operation mode Amplifiers are factory c...

Page 6: ...minimum nominal load impedance for stereo operation is 2 ohms per channel Either the 1 4 TRS inputs or the barrier strip inputs may be used Loudspeakers are connected to the red and black 5 way output binding posts for each channel Bridged Mono Mode Drawing 2 Bridged Mono Mode straps both amplifier channels together to make a very powerful single channel monaural amplifier One channel push es and ...

Page 7: ...ature grad ually 80dB to 0dB in 3 0 seconds increases gain to the attenuator setting avoiding unnecessary stress on the loudspeakers Thermal Protection If the heatsink temperature reaches an abnormally high temperature the ampli fier will protect itself by disconnecting loudspeakers and shutting down until sufficiently cooled During this time the Protect LED s will light If the power transformer g...

Page 8: ... 2 WIRING MAY BE USED Input is connected to Channel A using either a TRS connec tor or the Input Barrier Strip but not both Jumper from Channel A to Channel B for ground is not neces sary however input ground connection to Channel A must be made Either TRS or Input Barrier Strips but not both may be used for input connections to Channels A B In this dia gram bare wire has been con nected to the In...

Page 9: ...L Series Power Amplifiers Page 7 Models VsL460 VsL900 VsL1500 Tip Positive Ring Negative Sleeve Ground 4 TRS Polarity A B A B B 5 Balanced Input Connections Jumper A B A B B 6 Unbalanced Input Connections ...

Page 10: ...per channel Protect Active 14 gauge steel 5 25 x 19 x 12 133 x 483 x 305mm 38 lbs 17 3 kg 36 lbs 16 3 kg 250 Watts 450 Watts 550 Watts 900 Watts 1100 Watts 52 3V 74V 10Hz 20kHz 3dB 165kHz 20Hz 20kHz ACL IGM AutoRamp short circuit DC voltage turn on off transient current inrush sub ultrasonic input 1 0 0 05 1000 1 64dB 1 0 V X40 20kΩ 10kΩ 105 dB 60 dB AB TRS tip Barrier Strip 5 way binding posts 38...

Page 11: ...VsL Series Power Amplifiers Page 9 Models VsL460 VsL900 VsL1500 ...

Page 12: ...v 1 1 10 22 97 1997 Crest Audio C4400023 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 ...

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