January 15, 2004
World Leader •In-Rack• Audio & Video Monitoring
WOHLER AMP1-SDA
Compact, High Quality, 2 Channel, Analog, AES/EBU & SDI Self-Powered Speaker System
Features:
Full Fidelity Audio Monitoring in only 1U of rack space
1 SDI Input (Select either Sub-Group of Group One)
SDI Audio Groups 2-4 Selectable via Internal Jumper
1 Unbalanced AES/EBU Digital Input
2 Balanced Analog Inputs (1 Stereo)
1 Reclocked SDI Output
Demuxing of Either Sub-Group of SDI Group One to 1 AES/EBU Digital Output
Balanced Analog Output of Selected Digital Source
Powerful 98dB SPL at 2 feet (0.6m)
Two 26 Segment Tri-Color Level Meters Displaying Simultaneous VU & PPM
Premium Quality Drivers & Power Amplifiers
Extended Frequency Response and Low Distortion
Focused Sound, Reduces Adjacent Bay Crosstalk
Audible Indication of Phase/Polarity Problems
Innovative LED Display of Phase/Polarity Relationships
Thorough Magnetic Shielding for Placement next to Video Monitors
Headphone Jack, Mutes Speakers
Blowout Proof Speakers
Quick and Simple Installation
Au d io Monitoring
Level Metering
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
The AMP1-SDA provides self-powered,
full-fidelity stereo audio monitoring of 2 channels from Analog, AES/EBU Digital and SDI
sources in the smallest rack space possible.
This unit contains four high performance
transducers driven by three power amplifiers:
one amplifier/driver combination handles
midrange and high frequency information in
stereo, while the second handles summed low
frequency information below the 500 Hz
crossover point.
The AMP1-SDA features two 26 segment LED
level meters showing simultaneous VU & PPM
for accurate level-metering. The front panel
features an innovative LED 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-of-phase
(reversed polarity) audio feeds. A headphone
jack is provided on the front panel, usage
automatically mutes the speakers.
The AMP1-SDA is ideally suited for use in
VTR bays, mobile production vehicles,
teleconferencing installations, multimedia
systems, satellite link and cable TV facilities,
and on-air radio studios. Built and rigorously
tested in the USA, the AMP1-SDA is backed
by a strong warranty and a “Satisfaction
Guaranteed” return policy.
Video Moni toring
www.wohler.com
sales@wohler.com
WOHLER AMP1-SDA
Compact, High Quality, 2 Channel, Analog, AES/EBU & SDI Self-Powered Speaker System
S P ecifications:
Analog input . . . . . . . . . . . . . . . . . .2 balanced analog inputs, XLR
AES/EBU input . . . . . . . . . . . . . . . .1 unbalanced AES/EBU input, BNC
SDI input . . . . . . . . . . . . . . . . . . . .1 SDI input, BNC
Rear Panel:
Analog output . . . . . . . . . . . . . . . . .balanced analog output of selected
digital pair, XLR
AES/EBU output . . . . . . . . . . . . . . .1 unbalanced AES/EBU from SDI input, BNC
SDI output . . . . . . . . . . . . . . . . . . .1 reclocked SDI output, BNC
Level meters . . . . . . . . . . . . . . . . . .2 x 26 segment
Level meter scale . . . . . . . . . . . . . .+12 to -50 dB
Level meter threshold . . . . . . . . . . .0, +4, +6 or +8dBv - DIP switch
selectable
Level meter dynamics . . . . . . . . . . .Simultaneous VU & PPM
Midscale resolution . . . . . . . . . . . .2dB
Peak acoustic output @ 2 feet . . . .98dB SPL
Power output . . . . . . . . . . . . . . . . .RMS each side (2 Ohms) - 5W, 7W peak
RMS center WOOFER (4 Ohms) - 11W,
16W peak
System Diagram:
Frequency response (1/6 octave) . . .80Hz - 20kHz (±5dB)
(-10dB @ 50Hz, 22kHz)
Analog input impedance . . . . . . . . .>40 kOhms balanced
AES/EBU input termination . . . . . . .75 Ohms unbalanced
SDI input termination
. . . . . . . . . .75 Ohms 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 . . . . . . . . . . . . .8% or less worst case frequencies above
180Hz including cabinet resonance,
typically <2%
Magnetic shielding
. . . . . . . . . . . .<0.5 gauss any adjacent surface
Power consumption (AVG. MAX.) . . .30W
Dimensions (HxWxD) . . . . . . . . . . .1.75 x 19 x 12” (44.5 x 483 x 305mm)
Weight . . . . . . . . . . . . . . . . . . . . .9.5lbs (4.3kg)
Power Supply . . . . . . . . . . . . . . . . .100 to 240VAC, 50/60Hz universal input
CE and UL approved
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
All specifications are subject to improvement