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70V

25V COM GND

70V

25V COM GND

TEL

MIC
BAL

GND

+

MUSIC

MUTE

MUSIC IN

BRIDGING

T

R

MODEL TPU250

250 WATT AMPLIFIER

ALC

TEL VOLUME

MIC VOLUME

BOGEN COMMUNICATIONS

GND

MUSIC

IN

CONTACT

RING

TEL

RING

APHEX

Output Wiring

All output wiring connections are made to the terminal strip located under the right
side access panel. Loosen the 2 Phillips-head screws on each side of the cover and
remove the cover.

IMPORTANT: Before making any connections or wiring changes to the amplifier
or any equipment connected to the amplifier, make sure that the amplifier is NOT
plugged into an AC outlet.

NOTE: The amplifier does not have a power switch, so it must be unplugged in
order to turn the power off.

Speaker Connection

70-volt speaker connections are made between the 70V and COM terminals on the
output terminal strip (see Figure 7). Use a 22 AWG shielded, twisted pair cable.
Connect the shield of the cable to the GND terminal of the output terminal strip.
The COM and GND terminals of the output terminal strip are connected using a
shorting clip. The shorting clip enables the amplifier output to act as an unbalanced
output (one side of the output connected to ground). If desired, the output can be
made to be a balanced output with no connection to ground.To balance the output,
simply remove the shorting clip. All speaker connections remain the same as above
including connecting the shield to the GND terminal.

NOTE: The amplifier output terminal strip includes a terminal for 25V speaker
connections. This is provided for special applications and is generally not used.

Page 9 of 

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Figure 7: Speaker Connection, Output Wiring

Output Terminal Strip

Содержание TPU250

Страница 1: ...TPU250 Telephone Paging Amplifier Installation and Use Manual 2000 Bogen Communications Inc All rights reserved 54 5900 01r1 0001 ...

Страница 2: ...plug This is a safety feature DO NOT defeat the safety purpose of the grounding type plug DO NOT staple or otherwise attach the AC power supply cord to building surfaces 7 DO NOT use the product near water or in a wet or damp place such as a wet basement 8 DO NOT use extension cords The product must be installed within 6 feet of a grounded outlet receptacle 9 DO NOT install telephone wiring during...

Страница 3: ...6 Input Wiring 6 Tel Input 6 Music Input 7 Microphone Input 7 Night Ringer Connections 8 Bridging Inputs 8 Input Cover Replacement 8 Output Wiring 9 Speaker Connection 9 Additional Power Amplifier 10 Line Matching Transformer WMT1A Connector 10 Output Cover Replacement 10 OPERATION 11 Indicators 11 Controls 11 12 Page 3 of 12 ...

Страница 4: ...is also provided Aphex improves the clarity of the output signal by replacing the higher frequency harmonics that are normally lost through the telephone system This amplifier includes a built in night ringer that can be triggered by either a standard telephone analog ring signal or an external contact closure The night ringer mutes the background music but not pages Package Contents Telephone Pag...

Страница 5: ...r and place it over the 2 screws using the top keyhole slots in the flanges at the sides of the amplifier Allow the amplifier to rest on the 2 screws and then proceed to insert the bottom 2 screws into the lower keyhole slots With all the screws in place tighten the screws to secure the amplifier NOTE Backboard must be a minimum of 3 8 thick plywood and securely mounted to the wall Rack Mounting T...

Страница 6: ...UTPUT EXT VOX ENABLE PHONE SYSTEM 24 48 24 48 COM N O PR PT M M R T Figure 4 Wiring for TEL Input Page 6 of 12 Wiring Connections IMPORTANT Before making any connections or wiring changes to the amplifier or any equipment connected to the amplifier make sure that the amplifier is NOT plugged into an AC outlet NOTE The amplifier does not have a power switch so it must be unplugged in order to turn ...

Страница 7: ...ffective in breaking ground loops that cause hum Microphone Input A high gain low impedance microphone input is provided in this amplifier It is designed to work with microphones like Bogen s MBS1000 microphone Connect the microphone s black wire to the amplifier s negative terminal under the MIC BAL connections Connect the microphone s Red wire to the positive terminal Connect the shield wire fro...

Страница 8: ...mplifier 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 amplifi...

Страница 9: ... speaker connections are made between the 70V and COM terminals on the output terminal strip see Figure 7 Use a 22 AWG shielded twisted pair cable Connect the shield of the cable to the GND terminal of the output terminal strip The COM and GND terminals of the output terminal strip are connected using a shorting clip The shorting clip enables the amplifier output to act as an unbalanced output one...

Страница 10: ...eplacement When all output connections are made remove the appropriate knockout on the input cover Replace the cover and tighten the screws while dressing the wires through the knockout hole WMT A CLASS 2 WIRING ACCEPTABLE Figure 9 WMT1A Connection to RCA Jack on Amplifier Amplifier WMT1A RCA Jack Additional Power Amplifier An external power amplifier can be used with the TPU250 amplifier You must...

Страница 11: ... acceptable level without overdriving the system When adjusting this level the PEAK LEVEL indicator should be observed to ensure that the amplifier signal is not distorted MUSIC MUTE This control adjusts the level of the background music heard during a paging announcement The background music mute level should be set to the customer s satisfaction but the page announcement must always be easily he...

Страница 12: ... and talking at a low level the sound should not be choppy nor missing parts of words If it is choppy or if intelligibility is poor rotate the control counterclockwise to the point where the sound is clear and crisp but not to the maximum counterclockwise position 2 If the background music shuts down when no page is in progress rotate the control clockwise until the music is restored ALC The ALC c...

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