Aiphone PG-100C, PG-50C, PG-20C User Manual

PAGING AMPLIFIER

PG-20C PG-50C

PG-100C

- INSTRUCTIONS -

PG-C Series Amplifiers, with built-in paging adaptors, are designed for use with Aiphone paging/intercom systems.

PRODUCT FEATURES

20, 50 and 100 watt models are available.

AIPHONE

PG-100C

PLIFIER

ADAPTOR

TEL /MIC

MUSIC

PRETONE

VOL

TREBLE

BASS

VOL

TREBLE

BASS

• Built-in Aiphone paging adaptors (MC-A, PD-1, PD-2).

• For use with Aiphone intercom systems MC-60/4, TD-H/Z, RCX, YKX, or as a stand-alone.

• Telephone system interface for paging.

• Full range volume and tone controls.

• Short circuit and overload protected.

• Separate bass and treble controls for paging and music.

• Adjustable background music volume control.

• Adjustable paging pre-tone volume control.

• Dry contact or VOX music mute (Mic or Tel).

• Black anodized brushed aluminum finish with ABS end panels.

• NRTL/C certified (complies with both UL & CSA standards).

NAMES AND FUNCTIONS

The following controls and terminals may be accessed by removing the screw on the bottom of the unit and lifting the lower cover.

1. Fuse

2. Power

3. Volume, Bass &

LED

GND

TB1

6. Ground

1. FUSE

2. POWER L.E.D.

3. VOLUME, BASS & TREBLE CONTROLS

7. Output

Replace fuse with 3AG SloBlo's only in the following ratings: PG-20C 3/4 Amp PG-50C 1-1/4 Amp PG-100C 2 Amp

Indicates that the amplifier is on or off.

These controls are normally set at the time of installation, purposely protruding only slightly from the cover so that they can be adjusted if necessary, but are less susceptible to accidental change.

A) PRE-TONE Volume - P1

Adjusts the level of the pre-tone signal over the speakers.

B) MUSIC/AUX Volume - P2, Bass - P3, Treble - P4

Adjusts the level, treble and bass of the background music.

LD1 POWER

A1002

SER.

P1 P2 P3 P4 P5 P6 P7 P8

Treble Controls

4. Dip Switches

SW1

5. Preset

Controls

VOXP9NOISE

P10

21345678

LEV P11

8. Terminals 1 - 9

C) TEL/MIC Volume - P5, Bass - P6, Treble - P7

Adjusts the level of the telephone/microphone input separately from the music controls.

D) Adaptor Volume - P8

Adjusts the volume level of the paging via the Aiphone intercom/paging system.

4. DIP SWITCHES

A) Dip switches 1 & 2 - Telephone/Microphone

If a telephone system is used, set both switches to the ON position. If an external microphone is used, set both switches to the OFF position.

B) Dip switch 3 - VOX (Voice activated switch)

Set this switch to the ON position if VOX music muting is going to be used with tel/mic paging.

C) Dip switches 4 & 5 - Talk battery

Set both switches to the ON position to enable this function. This option provides a talk battery to the telephone set or telephone system C.O. trunk.

D) Dip switch 6 - Pre-tone

Set this switch to the ON position to enable the Pre-tone function.

E) Dip switches 7 & 8 - Paging adaptor option

For PD-1 adaptor, set both switches to the OFF position. (The PD-1 is used for paging in the TD-H and TD-Z systems) For PD-2 adaptor, set switch 7 to the OFF position and switch 8 to the ON position. (The PD-2 is used for paging and talkback in the TD-H and TD-Z systems) For MC-A adaptor, set switch 7 to the ON position and switch 8 to the OFF position. (The MC-A is used for paging with the MC-60/4, RCX, and YKX systems)

Telephone

PD-1

Microphone

PD-2

MC-A

NAMES AND FUNCTIONS - CONT.

5. PRESET CONTROLS

A) VOX - P9 (Voice activated switch)

This pot adjusts the sensitivity of the VOX threshold of the tel/mic input. Make adjustments as follows:

1) Set the VOX control fully counter clockwise (CCW) (background music should be on).

2) While someone is talking in the page mode, slowly turn the control clockwise (CW) until the VOX circuit triggers and the background music cuts off.

3) Turn the control an additional 1/8 turn CW and leave at this setting. If the VOX function has a tendency to drop out, slightly increase (CW) the control setting.

B) Noise - P10 (Talkback background noise balance)

This pot cancels the background noise in the talkback circuit which may be induced into the speaker wiring by an outside source. (For use with the PD-2 talkback paging adaptor only.)

C) Level - P11

This pot sets the talkback level of the amplifier. (For use with the PD-2 talkback paging adaptor only.)

6. GROUND TERMINAL

A chassis ground has been provided to allow separate grounding of the unit, if required.

7. OUTPUT

Connect speaker wires to the terminals labelled OUTPUT. The rated output of all amplifiers is 70V RMS.

Note: To prevent any possible oscillation ensure that the speaker wires are kept away from any input wiring connected to the terminal strip described below (Item 9).

8. TERMINALS 1-9

In accordance with your particular system installation and requirements, make the following connections at the terminal block at the right.

A) Terminals 1 & 2 - Tel/Mic (Balanced Input)

Connect to either the telephone system page port, C.O. port, a telephone set or an external microphone (600Ω balanced - shield to pin 3) to these terminals. Depending on which source is used, dip switches

1 & 2 must be set accordingly. This voice input can only be activated by the page port dry contacts, the VOX circuit, the C.O. port talk battery circuit or a strap across pins 5 & 6.

CAUTION: This input must NOT be connected directly to the telephone network.

B) Terminals 3 & 4 - Music/Aux (Unbalanced Input) - (4 - Positive, 3 - Negative)

Connect a music source to these terminals noting that pin 3 is negative. Reversed connection can cause oscillation. It is important that shielded cable be used to avoid any induced hum. If you are using the matching PGT-8 tuner, follow the separate instructions included with the tuner. In applications where this amplifier is used with an external Aiphone paging adaptor, this input may be used as an AUX input with 10K ohms impedance.

C) Terminals 5 & 6 - Music Mute

When these two terminals are shorted together, the music/aux output of the amplifier will be muted to allow a tel/mic page to be heard.

D) Terminal 7 - Page C/2

Connect the appropriate leads from your Aiphone intercom system to this terminal. Refer to the following wiring diagrams for more details. Set dip switches 7 & 8 according to your system.

E) Terminals 8 & 9 - 12/24 VDC

If an Aiphone intercom system is used in conjunction with this amplifier, connect the matching power supply for that intercom system to these terminals. Be sure to observe polarity.

24VDC: When using the built-in MC-A adaptor. 12VDC: When using the built-in PD-1/PD-2 adaptor.

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