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70V
25V
COMGND
TEL
MIC
BAL
GND
+
MUSIC
MUTE
MUSIC IN
BRIDGING
TR
PEAK LEVEL
POWER
MODEL TPU250
250 WATT AMPLIFIER
ALC
TEL VOLUME
MIC VOLUME
MUSIC VOLUME
MUSIC MUTE
RINGER VOLUME
BASS
TREBLE
APHEX
BOGEN COMMUNICATIONS
VOX
GND
MUSIC
IN
CONTACT
RING
TEL
RING
APHEX
70V
25V
COMGND
TEL
MIC
BAL
GND
+
MUSIC
MUTE
MUSIC IN
BRIDGING
TR
PEAK LEVEL
POWER
MODEL TPU250
250 WATT AMPLIFIER
ALC
TEL VOLUME
MIC VOLUME
MUSIC VOLUME
MUSIC MUTE
RINGER VOLUME
BASS
TREBLE
APHEX
BOGEN COMMUNICATIONS
VOX
GND
MUSIC
IN
CONTACT
RING
TEL
RING
APHEX
TEL
MIC
BAL
GND
+
MUSIC
MUTE
MUSIC IN
BRIDGING
TR
MODEL TPU250
250 WATT AMPLIFIER
ALC
TEL VOLUME
MIC VOLUME
MUSIC VOLUME
MUSIC MUTE
RINGER VOLUME
BOGEN COMMUNICATIONS
GND
MUSIC
IN
CONTACT
RING
TEL
RING
APHEX
TEL
MIC
BAL
GND
+
MUSIC
MUTE
MUSIC IN
BRIDGING
TR
MODEL TPU250
250 WATT AMPLIFIER
ALC
TEL VOLUME
MIC VOLUME
MUSIC VOLUME
MUSIC MUTE
RINGER VOLUME
BOGEN COMMUNICATIONS
GND
MUSIC
IN
CONTACT
RING
TEL
RING
APHEX
Figure 6: Bridging Inputs
Night Ringer Connection Either a standard telephone (analog) ring signal (90 - 105 V AC, 20 - 30 Hz) or an
external contact closure activates the night ringer function of the amplifier. To
activate the night ringer using standard telephone (analog) ring, connect the analog
station's tip lead to the TEL RING "T" terminal and connect the ring lead to the "R"
terminal. If using an external contact closure, connect the closure pair across the
CONTACT RING terminals (not polarized).The night ringer follows the cadence of
the activating signal.
Bridging Inputs Bridging permits two amplifiers to be used in tandem with one another to increase
the total output power of the system, thereby permitting additional speakers to be
added (see Figure 6). For example, when two 250-watt amplifiers are bridged, the
total output capacity of the system is 500 watts.However,bridging does not increase
the size of the load a TPU250 can individually handle. Once bridged, each amplifier
will amplify the inputs present on both amplifiers.The level control of a particular
input on an amplifier will control the volume of this signal on both amplifiers. The
cable used to bridge amplifiers should not exceed 20 feet in length.
NOTE: You cannot bridge more than two TPU250 amplifiers at one time.TPU250
amplifiers can only be bridged with other TPU250 amplifiers.
Input Cover Replacement When all connections are made, remove an appropriate knockout on the input
cover. Replace the cover and tighten the screws while dressing the wires through
the knockout hole.