Avaya LU250WAMP 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 increases the total output power of the system. For example, when two 250-watt amplifiers are bridged, the total output capacity is 500 watts. Bridging is also a means by which to increase the number of amplifier inputs to an amplifier by using the input stage of a second amplifier (see Figure 6). The inputs of two or more amplifiers can be combined by using the bridging connections provided on these amplifiers.An RCA-to-RCA cable (not included) is used to connect the bridging jacks of different amplifiers together. 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 can only bridge up to 3 amplifiers at one time. 250-watt amplifiers can only be bridged with other 250-watt 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.

TEL VOLUME

ALC

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

TEL VOLUME

ALC

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

		POWER
		PEAK LEVEL
		APHEX
		TREBLE
		BASS
		RINGER VOLUME
		MUSIC MUTE
		MUSIC VOLUME
		MIC VOLUME
		TEL VOLUME
		ALC
				MUSIC IN		BRIDGING
	CONTROLS		MIC	GND	TEL	CONTACT		TEL
TEL	MIC	COM	BAL		BAL	RING		RING
			+		T	R	T	R
								70V	25V	COM	GND

		POWER
		PEAK LEVEL
		APHEX
		TREBLE
		BASS
		RINGER VOLUME
		MUSIC MUTE
		MUSIC VOLUME
		MIC VOLUME
		TEL VOLUME
		ALC
				MUSIC IN		BRIDGING
	CONTROLS		MIC	GND	TEL	CONTACT		TEL
TEL	MIC	COM	BAL		BAL	RING		RING
			+		T	R	T	R
								70V	25V	COM	GND

Figure 6: Bridging Inputs

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