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VM SDI Digital Series User Manual P/N 821625 Rev-A

Features

VM SDI Digital Series

Analog/Digital Audio Monitors

Description

Section 1: General Features, Specifications, and Installation

The single-rackspace VM SDI Digital Series audio monitors permit stereo monitoring with excellent fidelity exceeding that of

ordinary monitors. In this series the VMSDA-1 monitors analog, AES, and standard SDI audio sources while the VMMDA-1can

monitor analog, AES, standard SDI, or HD-SDI audio sources.

A 3-position toggle switch on the front panel selects between the three input sources (analog, AES, or SDI). When SDI is selected

as the source, an 8-position rotary SDI Group Select switch selects which of the eight SDI channel pairs will be monitored. An LED

above the SDI Group Select switch indicates the "lock" status of the SDI source.

Both models feature dual 10-segment LED bargaph meters that provide visual indication of input levels. Other front panel features

include volume and balance controls, power indication LED, headphone output, and phase indication LEDs. Wohler Technologies

proprietary three-LED stereo phase indication feature allows monitoring of phase relationships of the selected stereo inputs.Volume

and balance controls are standard, but can be reconfigured as A volume/B volume via an internal jumper. Two front-firing midrange-

tweeter speakers and a compact high-performance woofer are arranged in Wohler Technologies’ popular bi-amp design. The

summed bass feature is important for audible detection of “out of phase” conditions. Speaker amp limiters prevent accidental

damage to speakers from high input levels.

The rear panel features an SDI input and output on BNC connectors, an AES input on a BNC and Phoenix connector, two analog inputs

on Phoenix connectors, and an analog stereo output of the selected source on Phoenix connectors.

• Only one rack space high, but produces a powerful 96 dB

SPL @ 2 feet

• VMSDA-1 model monitors analog, AES, and SD-SDI audio

sources

• VMMDA-1 model monitors analog, AES, and SD-SDI or

HD-SDI audio sources

• Source selected using a front panel 3-position toggle switch

(analog, AES, or SDI)

• Eight channel pairs from SDI Groups 1-4 selectable with

front panel rotary switch (when SDI is the selected source)

• LED indicates SDI "lock" status

• Two 10-segment LED bargraph audio level meters

• Phase indication LEDs

• Power indication LED

• Volume and Balance controls (jumper-configurable as A-

volume/B-volume)

• Headphone jack

• Two analog inputs on Phoenix connectors

• AES input on balanced Phoenix connector and unbalanced

BNC connector

• Selectable termination on AES input

• SDI input and re-clocked output on BNC connectors

• Balanced stereo analog output of selected source on Phoenix

connectors

• Thoroughly magnetically shielded

• Internal universal AC mains power supply

VMSDA-1 Front Panel

VMMDA-1 Front Panel

Models: VMSDA-1 and VMMDA-1