Williams Sound PERSONAL PA Pro Wide-band System 250 User Manual Download Page 1

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Williams Sound

Helping People Hear

PERSONAL PA

Pro Wide–band System 250

Wireless FM Listening System

Transmitter Model T4
Receiver Models R7, R7–4

Installation
Guide &
User
Manual

MAN 071 D

Summary of Contents for PERSONAL PA Pro Wide-band System 250

Page 1: ...Williams Sound Helping People Hear PERSONAL PA Pro Wide band System 250 Wireless FM Listening System Transmitter Model T4 Receiver Models R7 R7 4 Installation Guide User Manual MAN 071 D...

Page 2: ...HOOSING AND CONNECTING AN AUDIO SOURCE CHOOSING AN AUDIO SOURCE FOR THE HEARING IMPAIRED CONNECTING THE POWER SUPPLY ADJUSTING THE AUDIO INPUT CONTROL AUDIO PROCESSOR OPTIONS 16 ASSURING EXCELLENT PER...

Page 3: ...detail Step 3 Choose a Channel Both the T4 Transmitter and R7 Receivers are set to 72 9 MHz at the factory unless otherwise specified However you may easily set the T4 to any of the 10 available chan...

Page 4: ...trated on the T4 s back panel The T4 will not operate if you install the cable upside down though no damage will result Neither the T4 nor its power supply are equipped with a power switch Because the...

Page 5: ...p the sounds you want to hear and broadcast them over an FM radio signal The receivers pick up the broadcast up to 500 feet away Listeners may sit anywhere and can make the audio signal as loud as the...

Page 6: ...LR Bal Mic Bal Unbal line or 70V TRS Bal Unbal Line or 70V Audio Input Antenna 75 Ohms Plug Audio Select See chart on top To configure see chart on top 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Balanced Unbalan...

Page 7: ...those with Tip Sleeve Mono plugs Earphones with 3 5 mm plugs can be used with a suitable adapter i e Radio Shack Part 274 367 Listening to this signal gives an accurate indication of the audio actuall...

Page 8: ...e Ring of the 1 4 jack or to pin 3 of the XLR connector The shield is connected to the sleeve of the 1 4 jack or to pin 1 of the XLR connector The input impedance is approximately 20 K and performance...

Page 9: ...viate problems caused by inadequate immunity to RF in some audio equipment Williams Sound offers a document Technical Bulletin Buzz Or Hum In The Sound System FRM 531 giving suggestions for improving...

Page 10: ...ntenna ANT 024 REMOTE ANTENNA LOCATION TIPS Install the ANT 005 or ANT 024 with its elements vertical It should be near or within the listening area and somewhat above the seats However do not install...

Page 11: ...ystem or authorized radio service is operating on 72 9 MHz in your area In this case you may easily set the T4 Transmitter to any of the 10 available channels using the FM Channel Power Switch Remembe...

Page 12: ...NGINEERED INSTALLATIONS In an engineered audio system use good wiring practice to properly connect the audio feed as you would connect any other piece of high quality audio equipment See the section A...

Page 13: ...ground loop If other ground conditions are favorable ground loops can often be eliminated by using the T4 s balanced input amplifier even on unbalanced sources and connecting a capacitor in series wit...

Page 14: ...operator should consider the expected audience and program material Figure 8 shows response curves for the compressor limiter circuitry A hearing impaired person s perception of what is too loud is u...

Page 15: ...cable upside down Neither the T4 nor its power supply are equipped with a power switch Because there is no wear out mechanism and power consumption is minimal continuous operation is not a problem If...

Page 16: ...2 or even lower If you have normal hearing a volume control setting of 3 will likely be too loud for comfortable listening There should be no audible distortion hum or noise Williams Sound wide band F...

Page 17: ...otating the volume control in the direction of the arrow on top of the case The On indicator will light Turning the knob in the direction of the arrow will increase the volume Turning the knob against...

Page 18: ...rsonal hearing aid USING A RECEIVER WITH A HEARING AID Williams Sound PPA Receivers can be used with hearing aids using three different methods NECKLOOP TELECOIL COUPLER Neckloops are cords which hang...

Page 19: ...s of operation per charge Damage from improper charging is not covered by the Williams Sound five year warranty The battery installed in the receiver may be recharged in the receiver only if it is a N...

Page 20: ...e other radio services are known to exist is included with the transmitter Do not use frequencies that are known to be used by licensed radio services in your city either if they are on the list or if...

Page 21: ...tery compartment then lift up on the battery flap to open the back of the receiver This will expose the circuit board Step 4 Locate the tuning coil See Figure 10 The only adjustable item in the unit t...

Page 22: ...er and earphone for each regular user The facility maintains the units 3 Ushers issue receivers to people who request them Earphones are sanitized after use Foam ear cushions can be replaced or washed...

Page 23: ...ect or repair your audio source Check to see if your source level is too low If so readjust your source audio level or reset Audio Select switch to match the existing source level BUZZ OR HUM IN AUDIO...

Page 24: ...a 300 foot distance with the ANT 021 and a 500 foot distance with the ANT 005 Make sure the transmitting antenna is not in an unsuitable location Perhaps the transmitting antenna was installed inside...

Page 25: ...efit from Compress mode If so set the Audio Select switch for Compress USERS COMPLAIN OF TOO MUCH NOISE DURING SOFT AUDIO DYNAMIC RANGE OF MUSIC REDUCED TOO GREATLY Check to see if the Audio Level con...

Page 26: ...d R7 R7 4 R7 6 and R16 Receivers are warranted against defects in workmanship and materials for FIVE YEARS Microphones earphones cables carry cases rechargeable batteries and chargers are warranted ag...

Page 27: ...ight 8 45 21 5 cm W x 8 18 20 8 cm D x 1 72 4 4 cm H 3lbs 1 5 kg Color Black epoxy paint with white legends Rack Mount One EIA rack space high 1 2 space wide 1 2 units can be mounted in a single rack...

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