Home > Products > Audio > 4 Channel Audio > AMP1-VSA

My Quote:  Products  0   |  Qty  0
ClickTo View Image
4-channel (1 group) SDI and analog audio summing monitoring unit with metering and converted analog out
Product Description

The AMP1-VSA audio monitor provides self-powered, full-fidelity stereo monitoring in the smallest rack space possible (1U).

The unit features one SDI input and reclocked output on BNC connectors, four analog outputs (de-embedded from the SDI source) on four Phoenix connectors, four analog inputs on Phoenix connectors, D/A source select switch, and four high-resolution 26-segment tri-color LED bargraph level meters.

Two banks of four buttons on the front panel are used to independently assign from one to four (summed) channels to each of the two (left and right) speaker channels.

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 an SDI status LED, Wohler's' proprietary three-LED stereo phase indication feature, volume control, balance pot, power indication LED, and stereo headphone output.

List Price: Consult your local dealer.
End of Life, Not available for purchase
Product Information:


Things To Do:
Product Downloads:
Wohler Part Number:8103-0050
Signal Inputs Accepted: 
Monitoring Outputs Available:   
Signal Inputs:4 Balanced Analog Inputs on Phoenix; 1 SD-SDI Input on BNC
Signal Outputs:2 Balanced Analog Outputs Summed from Selected Source on XLR; 4 Balanced Analog Outputs from SDI on Phoenix; 1 SD-SDI Reclocked Output on BNC
Other Features (1):Alternate scales, color mappings and features such as phase correlation or sum & difference may be specified at the time of order
SDI Input Termination:75 Ohms unbalanced
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
Power Output:RMS Each Side: 10W Transient/5W Continuous; RMS Bass: 20W Transient/10W Continuous
Level Meters:4 x 26 Segments (Vertical)
Level Meter Threshold:0, +4, +6, +8 dBv(='0'), DIP selectable; Factory setting is +4 d
Level Meter Scale:+12 to -50 dB
Level Meter Dynamics:Simultaneous VU & PPM
Level Meter Resolution:2 dB
# of Video Displays:0
Rack Height:1RU
Weight:10.0 lbs (4.5 kg)
Dimensions:1.75x19x12" (44.5x483x305mm)
Power Consumption:35W
Rear Panel
+ Click Image For Close Up
Block Diagram
+ Click Image For Close Up