Williams Sound CFM 400, CFM 300 User Manual

Williams Sound

®

Helping People Hear



Installation
Guide &
User
Manual

SoundFocus FM

™

Classroom Amplification System
Models CFM 300 & CFM 400

Transmitter Model T31
Receiver Model R800, Speaker Model SPK 800

MAN 045D

Williams Sound

®

Helping People Hear



SOUNDFOCUS™CLASSROOM AMPLIFICATION SYSTEM
MODEL CFM 300/400

NSTALLATION AND USER MANUAL

I

Contents Page

Quick Start Instructions 4

The T31 Transmitter 5

CHARGING INSTRUCTIONS
TRANSMITTER OPERATION

The R800 Receiver & SPK 800 Speaker 7

SPEAKER SETUP

MINIMIZING FEEDBACK

SPEAKER WIRING DIAGRAMS

R800 FEATURES

In Case Of Interference 10

Using Multiple Systems 10

In Case Of Difficulty 11

Optional Personal Receivers 12

Optional Mounting Kits 14

SB-3 WALL/CEILING MOUNT KIT

SS-3 FLOOR STAND KIT

System Specifications 16

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Williams Sound

®

Helping People Hear

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SYSTEM OVERVIEW

R800 Receiver picks up FM signal and plays through itself
and SPK 800 Speaker. One R800 can drive up to three
SPK 800s. If you want to avoid speaker wiring, additional
R800's can be used instead of wired SPK 800's.

Teacher uses T31
Transmitter and
Microphone to transmit 
FM radio signal

Students with special needs 
can use optional Receivers 
with Earphones, Headphones, 
or Neckloop

R800
Receiver

T31
Transmitter

SPK 800
Speaker

Optional
3rd
Speaker

Optional
4th
Speaker

Thank you for purchasing the SoundFocus FM™Classroom Amplification System from
Williams Sound Corp. Anyone needing auditory assistance to overcome background noise,
reverberation, or distance from the sound source can benefit from the SoundFocus System.

Your SoundFocus System has two principal parts: the transmitter and the receiver. Much
like a miniature radio station, the transmitter and microphone pick up the sounds you want
to hear and broadcast them over an FM radio signal. The receiver picks up the broadcast up
to 100 feet away.

To avoid difficulties, please read through these instructions as you begin to use the system.
Then save them for questions that arise as you continue to use your Williams Sound
SoundFocus FM

™

Classroom Amplification System.

If you have problems with the system, don’t hesitate to call us toll-free at 1-800-843-3544.

SYSTEM COMPONENTS (CFM 300)

• FM Body Pack Transmitter (T31) • FM Receiver/Amplifier/Speaker (R800)

• Speaker (SPK 800) • (2) Rechargeable AA batteries (BAT 026)

• 3 V Multi Charger (CHG 200) • Omnidirectional Mic (MIC 081)

• Nylon belt (BLT 001) • Instruction Manual

• Transmitter Belt Clip Carry Case (CCS 021)

The CFM 400 includes (2) R800 Recei

O

VERALL SYSTEM DIAGRAM

FIG. 1:

vers and no SPK 800 Speakers

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Williams Sound

®

Helping People Hear



QUICK START INSTRUCTIONS

Teacher

Mic

Feedback

Zone

R800 Receiver

6 feet

Feedback

Zone

SPK 800 Speaker



1. Charge the transmitter batteries first! See pages 10 and 11 for directions.

2. Plug the microphone into the transmitter mic jack. Clip the microphone onto a collar,
lapel, or tie, as close to the speaker's mouth as is practical.

3. Turn the T31’s FM switch to ON. The transmitter can be placed in a pants pocket, or
clipped onto a belt or waistband with the belt clip carry case.

The microphone cord is the transmitting antenna. Do not bunch up the cord, wrap it
around the transmitter, or place the transmitter in a shirt pocket. It should hang as
straight as possible.

Install the antenna on the R800 Receiver. Thread the “rubber duckie” antenna onto the

4.
mounting stud on top of the receiver.

5. Locate the R800 and SPK 800 near the front corners of the room, pointing at the class.

6. Connect the R800 Receiver to the SPK 800 Speaker with the cable included.

7. Plug the R800 Receiver into an AC wall outlet.

8. Set the volume control to minimum on the R800 Receiver.

9. Turn the R800 Power switch ON and make sure the R800’s FM switch is ON.

10. Have someone else slowly turn the R800’s volume control up.

Turning the volume up
too loud will cause a whistling or squealing feedback sound. The volume should be
set below the point at which feedback occurs. Avoid getting too close to the receiver
or speaker when you’re wearing the microphone or feedback can occur.

11. Charge the transmitter every night. Turn the transmitter FM switch OFF while charging.

FIG. 2: CORRECT SPEAKER PLACEMENT

5

USING THE T31 TRANSMITTER

Williams Sound

®

Helping People Hear



Mic

W

illiams Sound FM

Off

On

FM

O

n/Off Switch

Mic
Jack

Mic

M

ic Mute Switch

Yes Yes No

The T31 Transmitter’s microphone cord is the transmitting antenna. Do not bunch up the
cord or wrap it around the transmitter. For maximum range, the cord should hang as straight
as possible. The transmitter can be placed in a pants pocket, or clipped onto a belt or waist­band. Make sure the transmitter is turned OFF when not in use.

1. Make sure there are two charged AA batteries in the transmitter. If batteries are not
installed, see the section

FIG. 3: T31 TRANSMITTER TOP VIEW

2. Plug the microphone cord into the “Mic” jack on top of the Transmitter.

3. Place the transmitter in the belt clip case provided.

4. Turn the power switch on top of the transmitter to “On.”

5. Clip the microphone onto a collar, lapel, or tie. It should be as close to the speaker’s
mouth as is practical. (See Figure 4.)

Battery Information on page 10.

FIGURE 4: CORRECT MICROPHONE PLACEMENT

The SoundFocus System 300/400 comes with an omnidirectional, lapel-clip
style microphone. It should be clipped to a collar, lapel, tie, or neckline as
close to the mouth as possible and centered on the body as shown.

6. Turn the Mic Mute Switch to “On” when you are ready to speak. This switch allows
you to mute your microphone without turning off the transmitter. Listeners cannot
hear you through the system, and also do not hear the noise present when only the
receiver is on.

6

Williams Sound

®

Helping People Hear



USING THE R800 RECEIVERS & SPK 800 SPEAKERS

Teacher

Mic

Feedback

Zone

R800 Receiver

6 feet

Feedback

Zone

SPK 800 Speaker



The R800 is a combination FM receiver/amplifier/speaker. The SPK 800 is driven by the
amplifier within the R800. Both are compact, self-contained, and portable. Most rooms will
require just the two speakers, placed in either front corner of the room. For larger rooms,
additional speakers may be added to the rear corners.

MAIN FEATURES OF THE R800 RECEIVER/SPEAKER

FM/Auxiliary Switch

For normal use with the T31 Transmitter, the FM switch should be ON. When using an aux­iliary input from a VCR, tape player, preamp, or other source, turn the FM switch OFF.

FM Channel Switch

The selected receiver channel must match the transmitter channel. The SoundFocus™System is
pre-set to channel 3 (72.9 MHz). Change the receiver channel only if the transmitter channel
has been changed. See page 12 for instructions on changing the transmitter channel.

Line Output

This is an unbalanced, RCA jack that sends line-level signals to tape recorders,
other R800s.

This feature allows you to make recordings of your presentations.

VCRs, or

Line Input

This is an unbalanced, RCA jack that will accept line-level signals from tape players, VCRs,
movie projectors, etc. This feature allows the entire class to hear audio and video presenta­tions through the system.

RECEIVER/SPEAKER SET-UP

1. Place the R800 Receiver and SPK 800 Speaker at the front of the room as shown in
Figure 5.

FIG. 5: CORRECT SPEAKER PLACEMENT

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