WOHLER AMP1A-LP2S

WOHLER AMP1A-LP2S
February 4, 2004
World Leader •In-Rack• Audio & Video Monitoring
WOHLER AMP1A-LP2S
Compact, High Quality Analog Self-Powered Speaker System - 2 Stereo Channels
Features:
Full Fidelity Audio Monitoring in only 1U of rack space
4 Balanced Analog Inputs (2 Stereo, Select 1)
Balanced Analog Output of Selected Stereo Source
Powerful 98dB SPL at 2 feet (0.6m)
Two 10 Segment Tri-Color Level Meters Displaying VU or 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 AMP1A-LP2S provides self-powered,
full-fidelity stereo audio monitoring in the
smallest rack space possible. A front panel
switch allows the operator to select one
stereo source for monitoring & output from up
to 2 stereo analog inputs (4 channels). The
AMP1A-LP2S features two 10 segment LED
level meters showing VU or PPM for accurate
level-metering. 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 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 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 AMP1A-LP2S 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 AMP1A-LP2S is backed
by a strong warranty and a “Satisfaction
Guaranteed” return policy.
Video Moni toring
www.wohler.com
sales@wohler.com
WOHLER AMP1A-LP2S
Compact, High Quality Analog Self-Powered Speaker System - 2 Stereo Channels
Rear Panel:
S P ecifications:
Input . . . . . . . . . . . . . . . . . . . . . .2 stereo balanced analog - XLR
Output . . . . . . . . . . . . . . . . . . . . .balanced analog output of selected
pair - XLR
Level meters . . . . . . . . . . . . . . . . . .2 x 10 segment bargraphs
Level meter scale . . . . . . . . . . . . . .+3 to -20 dB
Level meter threshold . . . . . . . . . . .-6, 0, +4, +8 dBv: DIP switch selectable
Level meter dynamics . . . . . . . . . . .VU or PPM: DIP switch selectable
Midscale resolution . . . . . . . . . . . . .1 dB
Analog input impedance . . . . . . . . .>40 kOhms balanced
Peak acoustic output @ 2 feet . . . .98dB SPL
System Diagram:
Frequency response (1/6 octave) . . .80Hz - 20kHz (±5dB)
(-10dB @ 50Hz, 22kHz)
Power output . . . . . . . . . . . . . . . . .RMS each side (2 Ohms) - 5W, 7W peak
RMS dual WOOFER (4 Ohms) - 11W,
16W peak
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%
Hum and noise . . . . . . . . . . . . . . .better than -68dB below full output
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 (approx.) . . . . . . . . . . . . . .9.5lbs (4.3kg)
Power supply . . . . . . . . . . . . . . . . .100 to 240VAC, 50/60Hz universal input
CE and UL approved
All specifications are subject to improvement
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
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