Williams Sound PA R750 Installationsanleitung

OVERVIEW

The PPA R750 Monitor Receiver is designed for use with Williams Sound PERSONAL PA®

(PPA) Wide-band FM Transmitters. With the R750, small groups of people can listen to the FM

broadcast in a cry room, nursery, office area, or any location where a remote speaker is needed

and wiring is difficult to run.

USING THE R750 RECEIVER

Step 1: Insert the ANT 026 Antenna into the “Antenna” connection on the back of the unit.

(See Figure 2.) Make sure it is fully inserted and tightly fitted.

Step 2: Extend the antenna by grasping the tip and pulling straight upward.

Step 2: Insert the PLC 013 Plastic Clip into the hole provided. (See Figure 2.) Push the clip in

until it snaps into place.

Step 4: Lock the antenna shaft into the clip so that it will not rotate or fall over.

Step 5: Plug the AC power cord into an AC outlet and turn the power switch on.

Step 6: Make sure your PPA Transmitter is on and has an active audio source. Adjust the

volume control on the R750 until you hear the broadcast.

Note: The R750 will normally receive the FM broadcast up to 150 feet away from the

Transmitter.

Power

24VAC, CT

50-60Hz, 15W

Off

TREBLE BASS VOLUME

FM Receiver Model R750

This device complies with FCC Rules Part 15. Operation is subject to 

the following two conditions: (1) This device may not cause harmful 

interference and (2) this device must accept any interference that 

may be received, including interference that may cause 

undesired operation.

FCC ID: CNMR750

Williams Sound Corp. Eden Prairie, MN 55344

Williams Sound Corp.

FIGURE 1: R750 REAR PANEL FEATURES

Telescoping Antenna (ANT 026)

Antenna Connector

Plastic Antenna Clip (PLC 013).

Power On/OFF Switch

Volume, Treble, and Bass Controls

AC Power Supply

PPA R750 Monitor Receiver

FM Listening System Receiver

Williams Sound

Helping People Hear



Tuning Coil Access

FIGURE 2: TUNING COIL LOCATION & ANTENNA INSTALLATION

Williams Sound Corp.

10321 West 70th St., Eden Prairie, MN 55344-3446

U.S.A. 800-843-3544 / 952-943-2252 / FAX: 952-943-2174

OPERATING FREQUENCY (CHANNEL)

The R750 is pre-tuned to one of 10 different frequencies in the 72–76 MHz Auditory Assistance

Band. The last letter in the part number indicates the frequency. For example, a PPA R750E is

set to Channel E, 72.9 MHz. Stickers on the bottom of the PPA Transmitter and R750 Receiver

indicate the frequency they are tuned to.

The R750 frequency must match your transmitter frequency. If you experience interference on

the channel you ordered or if your receiver frequency does not match your transmitter frequency,

use the following directions to retune your R750.

TOCHANGE THE OPERATING FREQUENCY

Step 1: Make sure your transmitter has been correctly tuned to the channel of your choice.

Refer to the instructions that came with your transmitter for this procedure.

Step 2: Turn on the transmitter and begin broadcasting a signal.

Step 3: Insert a PLT 005 Tuning Wand (or similar plastic tuning wand) into the tuning coil

access on the side of the R750. (See Figure 2.)

Step 4: It is very important that you gently turn the tool COUNTER-CLOCKWISE until you

hear the signal, or until the tuning coil stops. This screws in the tuning coil as far as it

will go. Do not attempt to force it further.

Step 5: If the tuning coil hits the stop and you have not yet heard the signal, gently turn the

tuning slug CLOCKWISE until you hear the signal.

WARRANTY

The R750 is warranted against defects in manufacture for a period of five years. See the

enclosed warranty card for details.

SPECIFICATIONS

Dimensions 5-1⁄2" W x 8-3⁄8" H x 5" D

(14 cm x 21.3 cm x 12.7 cm),

Weight: 5 lbs. (1.9 kg)

Color: Black

Power: 120 VAC, 50 or 60 Hz, 25 Watts

FCC ID: CNMR750

Operating Freq: Pre-Tuned, Adjustable,

72 MHz – 76 MHz

FM Deviation: Wideband, 75 kHz, 75 µS

de-emphasis

AFC Range: ± 300 kHz

Sensitivity: 2 µV at 12 dB Sinad

Freq. Response: 100 to 10 KHz, ± 3 dB Controlled by

bass & treble

Signal-to-Noise Ratio: 50 dB at 10 µV

Receive Antenna: 39" telescoping whip (ANT 026)

Loudspeakers: 4 inch, 8 Ω,wide-range

Controls: ON/OFF rocker switch, rotary

volume, bass, and treble controls

Optional Products

Coaxial Antenna Kit ANT 005

Wall Mount Kit: SB-3 Wall/Ceiling Mount Kit

Insert Antenna

As Shown

Insert Antenna Clip

As Shown

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