Datasheet

Analog Door Phone
ADP1
Product Features:
• Weather-resistant
• Vandal-resistant brushed stainless steel faceplate with
mounting gasket and heavy-duty call button
• Suitable for indoor or outdoor station, door, or gate communication
• Secure entry access to commercial, industrial, or residential locations
• Push button initiates the call at remote location
• Connect directly to an analog PABX/KSU station
programmed for ringdown operation
• Adjustable microphone and speaker volume
• Adjustable call timeout (15 seconds to 2 minutes)
• Call limit timer can be disabled
• Responds to CPC pulses
• Hands-free communications
• Auto-answer feature allows monitoring of remote location
• Powered by telephone line; no power supply needed
• Fits interior and exterior dual gang electrical boxes
(user supplied)
Bogen’s ADP1 Door Phone provides convenient remote, hands-free two-way
communication between two locations. Durable, weather-resistant, stainless
steel construction protects against vandals and varying weather conditions.
Dimensions
Product
Weight
5" W x 5" H x 1-7/8" D;
2 lb.
6-3/8" W x 6-3/8" H x 1-7/8" D
(with bezel frame)
Product Features:
• Hi-Z, 10k-ohm primary impedance
• Lo-Z, 600-ohm secondary impedance,
balanced with center tap
• Matches high-to-low impedance
or low-to-high impedance
• Adapts line-level signals to
microphone inputs
• RCA connector for Hi-Z side
• Screw terminals for Lo-Z side
• Small steel enclosure w/ mounting ears
allows easy mounting anyplace
Product
Dimensions Weight
4 oz.
2" W x 2-3/8" H x 1-1/4" D
WMT1A,
WMT1AS
Models WMT1A and WMT1AS are general-purpose matching transformers that
allow proper connections between high (10k-ohm) and low (600-ohm) inputs and
outputs. Both models can be used to balance an unbalanced line or provide
isolation between two pieces of equipment. Both models can be configured to
produce a balanced, microphone level signal from a line-level signal such as that from
a pre-amp or music source. In addition, Model WMT1AS can adapt speaker level
signals (25V/70V systems) to a level suitable for the AUX input of an amplifier.
Connecting Amps to Other Equipment
When connecting amplifiers to other equip-
ment, these transformers are a “must have”
because they can solve a variety of problems.
• Where signal levels are insufficient to
drive an amplifier's AUX input to full
volume, installing either model on the
input will increase the voltage to the input
by about 5 times, providing plenty of level.
• Where input ground loops are causing a
hum problem, the isolation transformer on
either transformer can break the loop and
eliminate the hum.
• When unbalanced signals need to be sent
over long distances, either model can
balance them at both the send and receive
sides and reduce the possibility of noise
pickup.
• Both models allow a microphone input
to be used with an AUX-level signal input.
By moving a jumper, the attenuation is
changed on the high-impedance side to be
100 times less than the signal level on the
600-ohm side.
• The WMT1AS model can also convert 25V
and 70V speaker levels down to the
levels appropriate for AUX inputs on
amplifiers.
Shown with bezel frame (included)
Shown without bezel frame
www.bogen.com
54
TELEPHONE ELECTRONICS
DOOR PHONE
MATCHING TRANSFORMERS
WMT1AS adapts
speaker-level signals
to AUX level.