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AMP1A-VTR2
 

4-channel analog audio monitor ideally suited for Video Tape Recorders. Individually meter, monitor and sum 4 channels from 1 of 2 input groups. 

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The AMP1A-VTR2 audio monitor provides self-powered, full-fidelity stereo monitoring of analog audio in the smallest rack space possible (1U).

The unit features two selectable banks of four channels of balanced inputs on Phoenix connectors, 2-position source select switch, two 4-position rotary switches for independently assigning channels to the left and right speakers, and four high-resolution 26-segment tri-color LED bargraph level meters.

A pair of balanced XLR connectors output the selected audio source for connection to downstream equipment.

The level meters may be adjusted for a number of parameters, including Display Mode, Peak Hold, PPM Ballistics, Alternate Scales, and Phase Correlation via rear panel and internal DIP switches. An Auto Line Level Calibrate feature is also available.

The audio amplifier section features five high performance transducers driven by three power amplifiers: two amplifier/driver combinations handle midrange and high frequency information in stereo (left and right speakers), while the third center channel reproduces information below the 500 Hz crossover point (woofer speaker).

Output limiter circuits are incorporated to protect the speakers, and extensive magnetic shielding allows placement immediately adjacent to magnetically sensitive equipment, such as video monitors.

The unit front panel also features Wohler's' proprietary three-LED stereo phase indication feature, volume control, balance pot, power indication LED, and stereo headphone output.
Wohler Part Number:8100-0170
Rack Height:1RU
Weight:10.0 LBS (4.5 KG)
Dimensions:1.75X19X12" (44.5X483X305 MM)
Power Consumption:35W
Signals Monitored:ANALOG
Analog Inputs:8 BALANCED ANALOG INPUTS ON PHOENIX
Analog Outputs:2 BALANCED ANALOG OUTPUTS FROM SELECTED SOURCE ON XLR
Level Meters:4 X 26 SEGMENTS (VERTICAL)
Level Meter Scale:+12 TO -50 DB
Level Meter Threshold:0, +4, +6, +8 DBV(='0'), DIP SELECTABLE; FACTORY SETTING IS +4 D
Level Meter Dynamics:SIMULTANEOUS VU & PPM
Level Meter Resolution:2 DB
Aural Sound Outputs:WOHLER SPEAKER SYSTEM;HEADPHONE, MUTES SPEAKERS
Acoustic Distortion:8% OR LESS AT WORST CASE FREQUENCIES ABOVE 180 HZ INCLUDING CABINET RESONANCE, TYPICALLY < 2%
Electrical Distortion:<0.15% AT ANY LEVEL BELOW LIMIT THRESHOLD
Frequency Response (1/6 octave):80 HZ - 16 KHZ (+ OR -7 DB); (-10 DB @ 50 HZ, 22 KHZ)
Peak Acoustic Output @ 2 feet:98 DB SPL
Hum and Noise:BETTER THAN -68 DB BELOW FULL OUTPUT
Other Features (1):ALTERNATE SCALES, COLOR MAPPINGS AND FEATURES SUCH AS PHASE CORRELATION OR SUM & DIFFERENCE MAY BE S
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