Bogen WMT1A Manuel D’Utilisation

• Allows an 8-ohm speaker to connect to 70V 

or 25V amplifier outputs

• T725 Power Taps: 4, 2, 1, 1/2, 1/4, 1/8 watts

• T72510 Power Taps: 10, 5, 2-1/2, 1-1/4, 5/8 watts

• Easily-accessed, stripped and tinned wire

terminations

• Small, compact, and cost-effective

• Provides balanced, isolated, 1:1 or 600-ohm input

for power amplifiers

• Transformer connections terminated in a keyed

nine-pin miniature plug

• Compact, plug-in design

• Internal mumetal shielding

• 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 with mounting ears allows

easy mounting

• No wiring or soldering required

• May be used to provide a 600-ohm output from

a Bogen mixer/pre-amplifier

• All features and functions of the WMT1A, but can

also adapt speaker-level signals to the AUX input
level of an amplifier

Specifications subject to change without notice.
© 2002 Bogen Communications. Inc.
54-7775-02E  1107

The Bogen Models T725 and T72510 transformers
are speaker-matching transformers that allow an
8-ohm speaker to be connected to 70V or 25V ampli-
fier outputs. An 8-ohm secondary connects to the
speaker and the multi-tap primary connects to the
70V or 25V amplifier output.

The T725 can be tapped at 4, 2, 1, 1/2, 1/4, and 1/8
watts, while the T72510 can be tapped at 10, 5, 2-1/2,
1-1/4, and 5/8 watts. All wires are easily accessible.

The Bogen Models TL100 and TL600 line impedance-
matching transformers are compact, plug-in units 
specially designed for use with power amplifiers.

The TL100 provides a balanced 1:1 input match and
isolation; its primary impedance will be the same
value as total termination of the input impedance to
the amplifier(s).

Model TL600 impedance matches the output of a 600-
ohm telephone line to a Bogen power amplifier input.

The Bogen WMT1A transformer is designed especially
for impedance-matching inputs from, or outputs to,
a 600-ohm line. It has a Hi-Z, 10k-ohm primary imped-
ance and a Lo-Z, 600-ohm secondary impedance
balanced with a center tap.

As an input-matching transformer, it may be used to
connect telephone systems to most Bogen public
address amplifiers for telephone paging. It also
functions as an output-matching transformer in
feeding program material over a 600-ohm telephone
line (typically for "music-on-hold" applications). It is
compatible with any amplifier having a 25V output
terminal.

The WMT1AS has all the features and functions of
the WMT1A, but can also adapt speaker-level signals
(25V/70V systems) to a level suitable for the AUX
input of an amplifier.