Bogen TPU250 manual 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.

RINGER VOLUME
MUSIC MUTE
MUSIC VOLUME
MIC VOLUME	MODEL TPU250
	250 WATT AMPLIFIER
TEL VOLUME
	BOGEN COMMUNICATIONS

POWER

PEAK LEVEL

APHEX

TREBLE

BASS

VOX

MUSIC

MUTE

ALC

APHEX		MUSIC IN	BRIDGING
MIC	GND	TEL	MUSIC	GND	CONTACT
+ BAL			IN		RING

RINGER VOLUME
MUSIC MUTE
MUSIC VOLUME
MIC VOLUME	MODEL TPU250
	250 WATT AMPLIFIER
TEL VOLUME

TEL

RING

T R

	RINGER VOLUME
	MUSIC MUTE
	MUSIC VOLUME
	MIC VOLUME			MODEL TPU250
				250 WATT AMPLIFIER
	TEL VOLUME
			BOGEN COMMUNICATIONS
	ALC
	APHEX		MUSIC IN	BRIDGING
MUSIC	MIC	GND	TEL	MUSIC	CONTACT	TEL
MUTE	+ BAL			IN GND	RING	T RING R
						70V 25V COM GND

POWER
PEAK LEVEL
APHEX
TREBLE
BASS
VOX
RINGER VOLUME
MUSIC MUTE
MUSIC VOLUME
MIC VOLUME	MODEL TPU250

MUSIC

MUTE

BOGEN COMMUNICATIONS

ALC

APHEX		MUSIC IN	BRIDGING
MIC	GND	TEL	MUSIC	GND	CONTACT	TEL
+ BAL			IN		RING	T RING R

				250 WATT AMPLIFIER
	TEL VOLUME
			BOGEN COMMUNICATIONS
	ALC
	APHEX		MUSIC IN	BRIDGING
MUSIC	MIC	GND	TEL	MUSIC	CONTACT	TEL
MUTE	+ BAL			IN GND	RING	T RING R
						70V 25V COM GND

Figure 6: Bridging Inputs

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