September 3, 2004
World Leader •In-Rack• Audio & Video Monitoring
WOHLER AMP2-E8HDA
8 Channel Analog, AES/EBU, HD-SDI, Dolby® Digital & Dolby® E
Audio
Monitor
Wohler is proud to introduce the
AMP2-E8HDA, the world’s first in-rack
audio monitor capable of outputting
and/or displaying EITHER “Encoded”
Multi-channel audio (up to eight channels) from Dolby® E or Dolby® Digital
streams de-embedded from HD-SDI ,
OR “Discrete” multi-channel audio
programs which are embedded as discrete audio into an HD-SDI signal
without prior Dolby® Encoding.
Close cooperation with Dolby
Laboratories has again ensured development of this latest Wohler product
that meets the high standards for the
monitoring of both Dolby® E distribution and Dolby® Digital emission coding systems.
The ability to seamlessly switch
between encoded or discretely-embedded sources, in addition to providing
full simultaneous demuxed output of
the multi-channel source, offers a quite
significant new operational capability in
a single monitor unit.
Features:
• Powerful 104dB SPL at 2 feet (0.6m)
• Premium Quality Drivers & Power Amplifiers
• Excellent Frequency Response and Low Distortion
• Audible Indications of Phase/Polarity Problems
• Phase-Correlation Display of Selected Channels
• Eight 53-Segment Tri-Color LED Bargraphs displaying
Simultaneous VU and PPM
• Headphone Jack (mutes speakers)
• Thorough Magnetic Shielding for Placement next to Sensitive Equipment
• Front Panel Summing of any Combination of up to 8 Channels to the Left and/or
Right Speakers & Selected Analog Outputs
Inputs:
• Analog Audio
• AES/EBU Audio
• HD-SDI with Embedded AES/EBU Audio, Embedded Dolby ® Digital Audio, or Embedded Dolby ® E
• Dolby ® E or Dolby ® Digital Audio
Outputs:
• 8 Analog Outputs Demuxed from any 2 HD-SDI Audio Groups
or Converted from AES/EBU Digital Inputs
• 4 AES/EBU Digital Outputs Demuxed from any 2 HD-SDI Audio Groups
• Simultaneous AES/EBU output of decoded Dolby ® E/Dolby ® Digital
• 8 Channel Analog Output is NOT Available from Dolby ® encoded sources
• Optional Extra: Composite Video Output
A u d io Monitoring
Level Metering
The AMP2-E8HDA features an exceptionally high quality monitoring system
offering premium multi-channel audio
monitoring as well as
professional level metering in a compact two rackspace cabinet. This unit
contains three audiophile-quality drivers and three power
amplifiers; two speakers and amplifiers
reproduce midrange and high frequency information in stereo, while the
third amp/driver combination handles
summed LF information below the
500 Hz crossover point.
Eight 53 segment high-resolution tricolor LED level meters show simultaneous VU and PPM for superior levelmetering. The front panel features an
innovative LCD Display of
Phase/Polarity Relationships. 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 unique design provides optimally
focused sound for operators in an
Ultra Near Field
(1 to 3 ft.) working environment and
offers performance comparable to
that of many separate monitor pairs,
yet does so without the installation
hassles, awkward speaker placements
and “added-on” look. This provides
A larm S y s t e m s
Toll Free (US): 1-888-5-WOHLER Tel: (510) 870-0810 Fax: (510) 870-0811 • 31055 Huntwood AVE, Hayward, CA 94544
Video Mon itoring
www.wohler.com
sales@wohler.com
S P ecifications:
WOHLER AMP2-E8HDA
8 Channel Analog, AES/EBU, HD-SDI, Dolby ® Digital & Dolby ® E
HD-SDI input . . . . . . . . . . . .2 HD-SDI inputs on BNC, w/
reclocked out
Audio
Rear Panel:
AES/EBU inputs
. . . . . . . . .4 unbalanced AES/EBU inputs
(BNC) and
4 balanced AES/EBU inputs (DB25)
Analog input . . . . . . . . . . . .8 balanced analog inputs (DB-25)
Analog output
. . . . . . . . . .8 balanced analog outputs from
HD-SDI, AES/EBU, or analog (DB25) and 2 balanced analog outputs from
selected channels (XLR)
AES/EBU outputs . . . . . . . .4 balanced AES/EBU outputs
looped from the 4 balanced
AES/EBU inputs (DB-25), and 4
unbalanced AES/EBU outputs
from SDI (HD-15)
Dolby E/Dolby Digital ® or
PCM inputs . . . . . . . . . . . . .2 unbalanced inputs (BNC)
Composite video output
(with Video Option installed) 1 composite video output (BNC)
Level meters
. . . . . . . . . . .8 x 53 segment
System Diagram:
Level meter scale . . . . . . . .0 to -66 dB
Level meter threshold
....0, +4, +6 or +8dBv : switch
selectable
Level meter dynamics
Midscale resolution
....Simultaneous VU & PPM
. . . . . .1dB
Peak acoustic output @ 2 feet
Power output
104dB SPL
. . . . . . . . . .RMS each side (4 W ) - 10W, 14W
peak
RMS center WOOFER (4 W ) 25W, 35W peak
Frequency response (1/6 octave)
80Hz - 16kHz (±5dB)
(-10dB @ 40Hz, 20kHz)
Analog input impedance
balanced
...>40 kW
AES/EBU input termination .110 W balanced
75 W unbalanced
HD-SDI input termination
..75 W
AES/EBU input sampling rate
ing
Hum and noise
put
unbalanced
32-48kHz, auto-detect-
. . . . . . . . . .better than -68dB below full out-
Electrical distortion
threshold
. . . . . .<0.15% at any level below limit
Acoustic distortion . . . . . . .6% or less worst case frequencies above 140Hz including cabinet resonance,
typically < 1.5%
Toll Free (US): 1-888-5-WOHLER
Tel: (510) 870-0810
Fax: (510) 870-0811
31055 Huntwood Ave, Hayward, California 94544, USA
www.wohler.com • sales@wohler.com
All specifications are subject to improvement
“Dolby” and the double-D symbol are trademarks of Dolby
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