User manual

© 2002 Wohler Technologies Inc. ALL rights reserved
4
AMP2-AM Series User Manual P/N 821540 Rev-A
Features
AMP2-AM Series
Featuring Models: AMP2-AMVU and AMP2-AMPPM
Powered Analog Audio Monitor
Description
Section 1: General Features and Specifications
AMP2-AMVU or AMP2-AMPPM Front Panel
The AMP2-AM series analog monitor is a complete, exceptionally high quality analog stereo audio monitoring system in a
compact, two rackspace cabinet. It contains 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
tm
(1 to 3 feet) 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 being monitored.
All AMP2 series monitors come equipped with a ganged stereo volume control and balance pot, power indication LED, and
headphone output. Output limiter circuits are incorporated to protect the speakers, and extensive magnetic shielding allows
placement immediately adjacent to video monitors with no color impurities.
The AMP2-AM series models are specifically intended for those who prefer mechanical level meters when visually monitoring
audio signals. These units are capable of audibly monitoring two analog source channels through their stereo speaker systems while
simultaneously visually monitoring both channels via the two front panel mounted premium quality mechanical level meters. The
AMP2-AMVU model utilizes mechanical meters exhibiting VU ballistic characteristics while the AMP2-AMPPM model utilizes
mechanical meters exhibiting PPM ballistic characteristics with a choice of EBU or BBC scales..
Rear panel features on both models include two analog inputs on balanced XLR connectors, two loop-through outputs on two XLR
connectors, and two analog inputs on unbalanced RCA phono connectors.
• Two analog inputs on unbalanced XLR connectors
• Two analog loop-through outputs on unbalanced XLR
connectors
• Two analog inputs on unbalanced RCA phono connectors
• Headphone output
• Power indication LED
• Thorough magnetic shielding
• Numerous control and input options
• Quick and easy installation: simply slide in the rack and
connect audio and AC power
• 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
• Two front panel mounted mechanical level meters:
AMP2-PPM
• 2 Premium PPM Meters (EBU or BBC Scales)
AMP2-AMVU
• 2 Premium Quality VU Meters
WOHLER
TECHNOLOGIES
FAST-OUTFAST-IN
PHASE
AVG
AMP2-AM
ANALOG AUDIO
MONITOR PANEL
POWER