Wohler | AMP2-E8MDA-3G | WOHLER AMP2

WOHLER AMP2-E8MDA
September 1, 2004
World Leader •In-Rack• Audio & Video Monitoring
Accepts
b o t h H DI
& SD-SD
Inputs
®
8 Channel Analog, AES/EBU, Dual Mode HD-SDI/SD-SDI Digial, Dolby Digital & Dolby E Audio Monitor
Wohler is proud to introduce the AMP2-E8MDA,
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 either HD-SDI or SD-SDI, OR
“Discrete” multi-channel audio programs which
are embedded as discrete audio into an HD-SDI
®
Encoding.
or SD-SDI signal without prior Dolby
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.
The AMP2-E8MDA 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.
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 or SD-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 or SD-SDI Audio Groups
or Converted from AES/EBU Digital Inputs
• 4 AES/EBU Digital Outputs Demuxed from any 2 HD-SDI or SD-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
Au d io Monitoring
Level Metering
Eight 53 segment high-resolution tri-color LED
level meters show simultaneous VU and PPM for
superior level-metering. 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 for a higher SPL
for the operator while reducing overall ambient
sound and adjacent bay crosstalk.
Extended HF response reveals potential problems
with audio whine or hiss and electronic rather
than acoustic cancellation of bass frequencies
provides positive audible detection of out-ofphase (reversed polarity) audio feeds.
Built and rigorously tested in the USA, our
products are backed by a strong warranty and a
“Satisfaction Guaranteed” return policy.
A larm Systems
Toll Free (US): 1.888.5.WOHLER • Tel: 510.870.0810 • Fax: 510.870.0811 • 31055 Huntwood Avenue, Hayward, California 94544, USA
Video Moni toring
www.wohler.com
sales@wohler.com
WOHLER AMP2-E8MDA
8 Channel Analog, AES/EBU, Dual Mode HD-SDI/SD-SDI Digital & Dolby® E Audio Monitor
S P ecifications:
HD-SDI or SD-SDI input . . . . . . . .2 HD-SDI or SD-SDI inputs on BNC, w/
reclocked out
AES/EBU inputs . . . . . . . . . . . . . .4 unbalanced AES/EBU inputs (BNC) and
4 balanced AES/EBU inputs (DB-25)
Analog input . . . . . . . . . . . . . . . . .8 balanced analog inputs (DB-25)
Analog output . . . . . . . . . . . . . . . .8 balanced analog outputs from HDSDI/SD-SDI, AES/EBU, or analog (DB-25)
and 2 balanced analog outputs from
selected channels (XLR)
Rear Panel:
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
Level meter scale . . . . . . . . . . . . .0 to -66 dB
Level meter threshold . . . . . . . . . .0, +4, +6 or +8dBv : switch selectable
Level meter dynamics . . . . . . . . . .Simultaneous VU & PPM
Midscale resolution
. . . . . . . . . . .1dB
Peak acoustic output @ 2 feet
. . .104dB SPL
System Diagram:
Power output . . . . . . . . . . . . . . . .RMS each side (4 Ω) - 10W, 14W peak
RMS center WOOFER (4 Ω) - 25W, 35W
peak
Frequency response (1/6 octave) . .80Hz - 16kHz (±5dB)
(-10dB @ 40Hz, 20kHz)
Analog input impedance . . . . . . . .>40 kΩ balanced
AES/EBU input termination . . . . . .110 Ω balanced
75 Ω unbalanced
HD-SDI input termination . . . . . . .75 Ω unbalanced
AES/EBU input sampling rate . . . . .32-48kHz, auto-detecting
Hum and noise
. . . . . . . . . . . . . .better than -68dB below full output
Electrical distortion . . . . . . . . . . .<0.15% at any level below limit threshold
Acoustic distortion . . . . . . . . . . . .6% or less worst case frequencies above
140Hz including cabinet resonance,
typically < 1.5%
Magnetic shielding
. . . . . . . . . . .<0.8 gauss any adjacent surface
Power consumption (AVG. MAX.) . .60W
Dimensions (HxWxD) . . . . . . . . . .3.5 x 19 x 12” (89 x 483 x 305mm)
Weight (approx.) . . . . . . . . . . . . .18lbs (8.2kg)
Toll Free (US): 1.888.5.WOHLER • Tel: 510. 870.0810 • Fax: 510.870.0811
31055 Huntwood Avenue, Hayward, California 94544, USA
www.wohler.com • sales@wohler.com
Power supply . . . . . . . . . . . . . . . .100 to 240VAC, 50/60Hz universal input
CE and UL approved
All specifications are subject to improvement
“Dolby” and the double-D symbol are trademarks of Dolby Laboratories.
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