Section 1: Features, Specs, And Installation - Wohler AMP2-SDA/AVU User Manual

2u digital audio speaker monitor

Table of Contents

AMP2-SDA/AVU and AMP2-SDA/APP User Manual P/N 821576 Rev-A

The AMP2-SDA/AVU and AMP2-SDA/APP are exceptionally high quality stereo audio monitoring systems in compact, two

rackspace cabinets. All AMP2 Series units contain three audiophile-quality drivers and three power amplifiers; two amplifiers

(and two speakers) that reproduce midrange and high frequency information in stereo, and a third amp/driver combination (and

speaker) that handles summed Low Frequency (LF) information below the 500 Hz crossover point. The AMP2 Series unique

audio design has two important advantages. First, it provides optimally focused sound in an Ultra Near Field

environment. This allows higher SPL for the operator while reducing overall ambient sound and adjacent bay crosstalk. Second,

electronic rather than acoustic cancellation of bass frequencies provides positive audible detection of reversed polarity ("out of

phase") audio feeds. A unique LED display also visually shows "phase" (polarity) relationships of the signals selected for

monitoring.

The AMP2-SDA/AVU model features mechanical meters with VU ballistics characteristics and the AMP2-SDA/APP model

features these meters with PPM ballistic characteristics. Toggle switches on the front panel allow selection of SDI or AES input

sources, SDI subgroup 1 or 2 (channels 1/2 or 3/4), and a choice of the selected digital source or the analog source inputs. Two LEDs

indicate the presence and error status of the selected AES and/or SDI signals entering the unit.

The rear panel features an SDI input and loop-through on BNC connectors, an AES input on an unbalanced BNC connector, an AES

output (converted from the SDI input) on a BNC connector, analog inputs on two balanced XLR connectors, and a stereo analog

output of the selected digital source on two XLR connectors.

Wohler Technologies proprietary three-LED stereo phase indication feature allows visual monitoring of phase relationships of the

sources selected for monitoring through the speakers.

• 104 dB SPL at two feet

• Only two rack spaces high

• Excellent high frequency response for positive detection of

background whine and noise

• Audible and visual indication of phase/polarity problems

• Thorough magnetic shielding for placement next to video

monitors

• Choice of either VU or PPM high quality mechanical level meters

• SDI input and loop-through on unbalanced BNC connectors

• AES/EBU input on unbalanced BNC connector

• AES/EBU output (from SDI input) on BNC connector

• Analog inputs on two balanced XLR connectors

• Stereo analog output of the selected digital source

AMP2-SDA/AVU and

AMP2-SDA/APP

Powered Audio Monitors

AMP2-SDA/AVU or /APP Front Panel

Description

Features