Williams Sound Stereo Receiver WIR SYS 4 User Manual

SoundPlus® Language Interpretation System • Model WIR SYS 4  
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ADA COURTROOM ASSISTIVE LISTENING SYSTEM  
Description:  
The Language Interpretation System, model WIR SYS 4, is the ideal package for courtrooms that may be required  
to translate up to four languages simultaneously. Participants wear the RX22-4 body-pack style receiver to listen to  
the language of their choice. They can sit anywhere in a 11,000 ft2 area and can adjust the volume to meet their  
comfort level. For the hard of hearing participant, the RX22-4 receiver can be used with a neckloop (included) to  
amplify the participant’s telecoil equipped hearing aid. SoundPlus infrared technology ensures privacy and securi-  
ty: the message of the proceeding will not travel outside the walls of the courtroom.  
Each WIR SYS 4 package includes: two (2) TX9 emitters, two (2) MOD 232 modulators, four (4) RX22-4 receivers,  
four (4) HED 021 headphones, one (1) NKL 001 neckloop, and one (1) RPK 005 rack panel kit. The WIR SYS 4 meets  
and exceeds government ADA regulations for public hearing assistance, and is backed by a five-year warranty.*  
MOD 232 Modulator:  
Size, Weight:  
Color:  
8.5" W x 8.2" D x 1.7" H (21.5 cm x 20.8 cm x 4.4 cm), 3.1 lbs (1.5 kg)  
Black epoxy paint with white legends  
Rack Mount:  
1/2 rack space wide, 1 rack space high, one or two modulators may be mounted in a single  
IEC rack space with RPK 005 (single) or RPK 006 (double) Rack Mount Kits  
Wall Transformer, 24VAC, 50-60 Hz, 15VA  
Power Supply:  
North America:  
Europe:  
UK:  
TFP 016, UL/CSA  
TFP 027-01, 2-pin Schuko plug, CE  
TFP 027-02, 3-pin UK plug, CE  
Modulation:  
FM Wideband, +50kHz deviation, 50uS pre-emphasis  
Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,  
Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz  
Carrier Frequency:  
Signal-to-Noise Ratio:  
Frequency Response:  
Total Harmonic Distortion:  
Audio Processing:  
More than 60dB  
30 to 16,000 Hz, +1 dB, -3 dB, electrical response  
Less than 2%, electrical response  
Compression (slope) adjustable from 1:1 to 4:1  
Switchable compression gain: Moderate: 16 dB. Max: 33 dB  
15-minute timer shuts off carrier when no audio is present (can be disabled)  
Auto Carrier Shut-Off:  
Fig. 1: MOD 232 Front Panel  
Two Channel Infrared System Modulator  
Williams Sound  
Microprocessor Controlled  
Frequency Synthesized  
+9  
+6  
+3  
0
+9  
+6  
+3  
0
Inputs Mixed  
3.8  
3.3  
2.8  
2.3  
3.8  
3.3  
2.8  
2.3  
5
5
Phones  
4
6
4
6
Compress  
Compress  
7
8
9
7
8
9
Stereo  
IR  
3
3
2
1
- 3  
-6  
- 3  
-6  
2
Power  
-9  
-9  
CH A  
CH B  
1
-12  
-15  
-18  
-12  
-15  
-18  
Frequency  
(MHz)  
Frequency  
(MHz)  
0
10  
0
10  
Level  
Level  
Channel A  
Channel B  
Power Switch:  
Power Indicator:  
Two-position push button, ON/OFF  
Green LED  
Audio Level Controls:  
Audio Indicators:  
Carrier LEDs:  
Compress Control:  
Input Mix LED:  
Stereo LED:  
CHA and CHB Input Level, rotary knobs  
CHA and CHB Audio Level, 10-segment LED’s  
4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions)  
1:1 to 4:1  
Indicates inputs A and B audio are mixed and transmitted by CHA, CHB off  
Indicates stereo mode  
Phones Switch:  
Phones Output:  
Infrared Test LED:  
Selects CH1 or CH2 for phones when not in stereo mode  
1/4" TRS headphone jack. Accepts stereo, mono, and any impedance phones.  
IR LED for receiver testing, monitoring, and audio signal testing.  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
*90 days on accessories  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Fig. 3: WIR TX9 Rear Panel  
Multi-Channel Infrared Transmitter  
RoHS  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
WARNING: TO REDUCE THE RISK OF FIRE OR  
ELECTRIC SHOCK DO NOT EXPOSE THIS  
EQUIPMENT TO RAIN OR MOISTURE.  
Class  
LED Product  
1
Mounting  
Bracket  
Note: It is normal for this unit to feel warm while it is in operation.  
Power Supply Wiring:  
Use NEC, Class  
2
Wiring, 18 ga. minimum,  
200 ft. (70m) maximum length (18 ga.)  
Baseband Signal Wiring:  
Use 50 Ohm Coaxial Cable (RG58)  
Baseband Signal Wiring:  
Use RG58 Coax,1000 ft. (350m) max. length  
Williams Sound Corp., Minneapolis, Minnesota, USA  
Patent Pending  
Made in U.S.A.  
Baseband  
(Modulation)  
NC 24 VAC  
Power In:  
Out  
Out  
In  
24VAC  
~
Plug  
50 Ohms  
50-60Hz  
35VA  
Power On  
Baseband On  
Fig. 4: Receiver Coverage Area with TX9 Emitter in Single Channel Mode  
90  
80  
Feet  
Receiver Coverage Area with TX9  
Transmitter in Single Channel Mode  
70  
60  
RX22-4 Receiver  
RX14-2 Receiver  
RX16 Receiver  
50  
40  
30  
20  
10  
0
RX16  
RX14-2  
RX22-4  
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
-90  
0
90 100 110 120 130 140 150 160  
10 20 30 40 50 60 70 80  
Feet  
The coverage area for the TX9 will vary depending on the receiver being used. The diagram above  
demonstrates the receiver coverage when operating a single TX9 emitter in single channel mode.  
Patterns are direct radiation patterns.  
Note: Reflections of the infrared light from walls, ceilings and floors may change these patterns.  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Fig. 5: 3-Dimension Foot Pattern  
The TX9 floods the listening audience with a  
cone shape light pattern as shown here.  
The path of the cone shape light leaves a  
pattern on the ground, or "foot print, " and  
indicates where the strongest receiver  
reception will occur.  
The actual coverage area will vary depending  
on the sensitivity of the receiver being used.  
Refer to Figures 4 and 7 to determine how  
many emitters are required for 100% coverage  
of the listening area.  
To determine the best location for the emitter, it helps to think of the IR emitter as an invisible flood-  
light. You’ll want to aim it so the listeners are “flooded” with the infrared light. The emitter should also  
be positioned high enough so it won’t be blocked by people and other physical obstructions. See Figure  
6 below. Mount the emitter at least 2 ft. (.61 m) above the audience. Position the emitter to face in a  
slightly downward angle, 20°, that will increase the “throw” of the infrared beam.  
Fig. 6: Vertical Beam Spread  
Minimum Receiver Range When Operating with a TX9 Emitter in Single Channel Mode  
RX22-4 Receiver:  
150' (45 m)  
RX14-2: 80' (24 m)  
RX16: 70' (21 m)  
(Range)  
TX9  
30'  
SCREEN  
STAGE  
6'  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Maximum Range When Using the RX22-4 Infrared Receiver  
Fig. 7: Horizontal and Vertical Radiation Polar Plots  
HORIZONTAL RADIATION POLAR PATTERNS  
VERTICAL RADIATION POLAR PATTERNS  
DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR  
DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR  
– 90  
– 80  
– 90  
– 80  
60  
60  
200  
200  
– 70  
– 70  
– 60  
– 60  
54  
48  
42  
36  
30  
24  
18  
12  
6
54  
48  
42  
36  
30  
24  
18  
12  
6
180  
160  
140  
120  
100  
80  
180  
160  
140  
120  
100  
80  
– 50  
– 50  
– 40  
– 40  
– 30  
– 30  
– 20  
– 20  
60  
60  
40  
40  
– 10  
– 10  
20  
20  
0
0
10  
10  
20  
20  
30  
30  
40  
40  
50  
50  
60  
60  
70  
70  
80  
80  
90  
90  
1 Channel, 1 nW/sq cm  
(Approx. 28000 sq ft, 2600 sq m)  
1 Channel, 1 nW/sq cm  
2 Channel, 1 nW/sq cm per channel  
(Approx. 18000 sq ft, 1700 sq m)  
2 Channels, 1 nW/sq cm per channel  
4 Channel, 1 nW/sq cm per channel  
(Approx. 11000 sq ft, 1000 sq m)  
4 Channels, 1 nW/sq cm per channel  
Reflections of the infrared light from walls, ceilings, and floors may change these patterns.  
Important: Remember to point the emitter towards the listening audience!  
If you’re not getting sufficient coverage with a single, properly installed TX9 Emitter, you may need  
to add additional WIR TX9 Emitters to achieve full coverage of your listening area. Figures 8a and  
8b illustrate how multiple emitters can be used for large room installations.  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Multiple Emitters Installed to Maximize Coverage  
Fig. 8a: Overlapping Illumination Patterns to Cover Larger Listening Areas  
TX9  
TX9  
TX9  
TX9  
Fig. 8a above is a typical example of how multiple emitters are used to cover larger listening areas.  
Generally it is desirable for the illumination patterns to overlap. Note: The coverage area will vary depend-  
ing on the infrared receiver being used; refer to Figures 4 and 7 to determine how many emitters are  
required to achieve full coverage of a listening area.  
Fig. 8b: Overlapping Illumination Patterns to Cover Larger Listening Areas  
Coverage Area  
with Single Emitter  
TX9  
Coverage Area  
with Second Emitter  
TX9  
Added to Same  
Emission Point  
(50% increase)  
When two emitters are used at the same emission point in single channel mode, the overall coverage area  
increases 50%. When using an RX22-4 receiver, as a result, the coverage area will increase to an estimated  
42,000 ft2 (3,902 m2); the RX14-2 will increase to 5,250 ft2 (488 m2); the RX16 will increase to 4,590 ft2 (426 m2 ).  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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WIR RX22-4 Receiver:  
Receiver Style:  
Size:  
Body-Pack, dual-lens detector, lanyard  
4.5" L x 2.85" W x 1.2" H (114.3 mm x 72.4 mm x  
30.4 mm)  
Fig. 9 WIR RX22-4 Receiver  
Weight:  
Color and Material:  
Lanyard:  
Operating Temperature:  
Battery Type:  
Battery Life:  
Battery Drain:  
Charging Contacts:  
Carrier Frequency:  
4.6 oz (130 g) with batteries  
Black  
Channel  
Earphone  
Jack  
Selector Knob  
3 ft (.91 m), allows receiver to be worn around the neck  
-10° C to +50° C  
2 x AA, alkaline (BAT 001) or NiMH (BAT 026)  
Alkaline: 60 hours, NiMH: 30 hours/charge  
25 mA, nominal  
OFF  
"On"  
On/Off  
Indicator LED Volume Switch  
For use only with CHG 3512  
Channel 1: 2.3 MHz, Channel 2: 2.8 MHz  
Channel 3: 3.3 MHz, Channel 4: 3.8 MHz  
50 uS  
RX22-4 Top  
De-Emphasis:  
FM Deviation:  
50 kHz  
Signal-to-Noise Ratio:  
Squelch:  
Frequency Response:  
Total Harmonic Distortion:  
Controls:  
60dB min.  
Receiver squelches (mutes) at 40 dB S/N ratio  
25 Hz to 16 KHz, +1 dB, -3 dB, electrical response  
Less than 1%, electrical response  
ON/OFF/VOLUME: combination thumbwheel knob  
Channel Selector: four-position rotary switch  
Red LED “ON” indicator, flashes to indicate Low battery  
3.5 mm stereo mini phone jack  
Accepts 3.5 mm mono or stereo phone plug  
15 mW max at 32 Ω  
Indicators:  
Audio Output Jacks:  
Audio Output Power:  
Acoustic Output:  
Sensitivity:  
110 dB SSPL90 w/ EAR 013  
Better than 1 nW/cm2 for 40 dB signal-to-noise ratio  
CE, FCC, RoHS, WEEE  
Approvals:  
Warranty:  
5 years on receiver, 90 days on accessories  
Compatible Headphones/Earphones: Mono or stereo, 8-32 ohms, 3.5 mm mini phone plug,  
HED 021, HED 026, EAR 013, EAR 014, EAR 022, NKL 001  
RX22-4 Front  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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WIR RX14-2 Receiver:  
Receiver Style:  
Earpad Size:  
Weight:  
Color and Material:  
Operating Range:  
Battery Type:  
Battery Life:  
Battery Drain:  
Controls:  
Headset  
2.5" (6.5 cm) diameter, adjustable headband  
6.7 oz (191 g) without batteries  
Black, plastic  
Up to 3,500 ft2 (325 m2) when using a single WIR TX9 Emitter  
AAA Alkaline batteries (BAT 010). AAA NiMH (BAT 022) optional  
Alkaline: 50 hours, NiMH: 8 hours/charge  
25 mA, nominal  
ON/OFF switch  
(2) Thumbwheel volume control knob, left and right  
(1) Frequency push-button selector, 2.3 MHz or 2.8 MHz  
50 Hz – 12 kHz  
58 dB (IEC weighted)  
FM wideband modulation  
Frequency Response:  
Signal-to-Noise Ratio:  
Deviation:  
Acoustic Output:  
Approvals:  
118 dB MAX SSPL90, +/- 1 dB with 6 cc coupler  
CE, RoHS, WEEE  
Warranty:  
1-year warranty (excludes physical damage)  
Fig. 10: WIR RX14-2 Side View  
Right Earphone  
Left Earphone  
Infrared “Eye”  
Infrared “Eye”  
AAA  
Battery  
Compartment  
AAA  
Battery  
Compartment  
Frequency  
Selector: 2.3 MHz  
or 2.8 MHz  
On/Off  
+
+
Volume  
Volume  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Two-Channel System Diagram  
Fig. 11: Two-Channel System  
WIR TX9 Emitter (rear)  
Multi-Channel Infrared Transmitter  
RoHS  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
WARNING:TO REDUCE THE RISK OF FIRE OR  
ELECTRIC SHOCK DO NOT EXPOSE THIS  
EQUIPMENT TO RAIN OR MOISTURE.  
Class  
LED Product  
1
Mounting  
Bracket  
Note: It is normal for this unit to feel warm while it is in operation.  
Power Supply Wiring:  
Use NEC, Class  
2
Wiring, 18 ga. minimum,  
200 ft. (70m) maximum length (18 ga.)  
Baseband Signal Wiring:  
Use 50 Ohm Coaxial Cable (RG58)  
Baseband Signal Wiring:  
Use RG58 Coax,1000 ft. (350m) max. length  
Williams Sound Corp., Minneapolis, Minnesota, USA  
Patent Pending  
Made in U.S.A.  
Baseband  
(Modulation)  
NC 24 VAC  
Power In:  
Out  
Out  
In  
24VAC  
~
Plug  
50 Ohms  
50-60Hz  
35VA  
Power On  
Baseband On  
To Additional  
Emitters (if necessary)  
MOD 232 Modulator (Rear)  
MOD 232 Infrared System Modulator  
Williams Sound  
Audio Line  
Output  
Input CH  
A
Input CH  
B
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
CH  
CH  
A
B
Baseband  
Input  
Output  
Output  
CH  
CH  
A
Power In  
24 VAC, 15 VA, 50-60 Hz  
Plug  
Configuration  
Switches  
B
50 Ohms  
Made in USA  
100 Ohms  
24V  
Baseband Signal  
CHA  
Audio In  
CHB  
Audio In  
RX22-4 Receiver  
(wireless)  
SOUND SYSTEM  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Bid Specs  
Modulator, Model MOD 232  
The infrared system shall consist of separate modulator and emitter units, with portable receivers. The modulator unit  
shall be a half-rack style, metal enclosure. A rack panel shall be available to mount one or two modulator units within a  
single EIA rack space. An adjustable floor stand and mounting bracket shall be available to mount the modulator and  
emitter together for portable operation.  
The modulator shall provide two channels of selectable FM carrier signals; 2.3/2.8/3.3/3.8 MHz, so that a single modulator  
can be used to simultaneously transmit up to two channels, and two modulators can be ganged together to transmit up  
to four channels simultaneously. The carrier signals shall use 50 kHz deviation and 50 µS pre-emphasis. The carrier signals  
(baseband) shall be transmitted to one or more emitters by 50 ohm RG58 coaxial cable with BNC-type connectors. A  
BNC–type baseband input jack and baseband output jack shall be provided on the modulator. The modulator shall be  
powered by an external 24 VAC, 10 VA, 50-60 Hz power supply, connected via a three-pin Molex power connector.  
It shall have a rocker-type power switch, power LED indicator, four carrier indicator LEDs and two bar graph-type LED  
audio indicators. The modulator shall have a modulated IR LED on the front panel for testing purposes, and a head-  
phone jack that accommodates mono and stereo 1/4" headphones, and channel monitoring switch. The modulator shall  
have two rotary audio input level controls, and a screwdriver adjustable control for varying the input compression from  
1:1 to 4:1. The modulator shall have two timers that automatically shut off the carriers when there is no audio signal  
present for 15 minutes. The modulator shall have two combination input jacks that accept 3-pin XLR plugs for balanced  
microphone input or 1/4" TRS plugs for balanced or unbalanced line-level inputs. The XLR inputs shall be low impedance,  
accept signal levels from 100 µV to 90 mV and supply 15 V simplex power per DIN45596. The TRS jacks shall accept bal-  
anced or unbalanced audio signal levels from 21 mV to 10 V. The modulator shall have CE, FCC, RoHS, and WEEE  
approval and carry a five-year parts and labor warranty.  
The modulator shall be the Williams Sound Corp. model MOD 232.  
Emitter, Model TX9  
The emitter shall be contained in a metal enclosure with a shatter-resistant lens. The emitter shall include an omni-direc-  
tional mounting bracket for permanent installation and a bracket shall be available for mounting on a floor stand for  
portable installations. Each emitter shall be powered by a 24 VAC, 50 VA, 50-60 Hz power supply. The power connector  
shall be a 3-pin Molex-type. The emitter shall have a BNC-type 50 ohm baseband input and a BNC-type baseband 50 ohm  
output jack. The emitter shall have a repeater circuit to allow multiple numbers of emitters to operate from the base-  
band signal. The emitter shall have a visible LED indicator for power and for baseband signal. Carrier frequency is 50KHz  
to 8 MHz. The emitter shall shut off when the baseband signal is not present. The emitter shall provide an effective cov-  
erage area of 28,000 sq ft (2,600 sq m) in single channel mode and 18,000 sq ft (1,700 sq m) in two channel mode when  
using the RX22-4 receiver. The emitter shall be convection-cooled, without fans. The emitter shall have CE, FCC, RoHS,  
and WEEE approval and carry a five-year warranty on parts and labor.  
The emitter shall be Williams Sound Corp. model WIR TX9.  
WIR RX14-2 Receiver  
The receiver shall be a headset style with IR detectors positioned on top of each individual earphone. The receiver  
shall operate on 2.3 MHz or 2.8 MHz frequency. The receiver shall have an individual rotary-type volume control on  
each individual earphone and a on/off selection switch on the right earphone. The receiver shall have a push button  
frequency selector to choose between 2.3 MHz or 2.8 MHz operation. The receiver shall provide 118 dB SSPL90 out-  
put, +/- 1 dB, and a signal-to-noise ratio of 58 dB. The receiver shall operate up to 50 hours when using AAA alka-  
line non-rechargeable batteries and 8 hours per charge when using AAA NiMH rechargeable batteries. The receiver  
shall be encased in a black, plastic case. The receiver shall operate up to 3,500 ft2 (325 m2) when using a single WIR  
TX9 Emitter. The receiver shall have CE, RoHS, and WEEE approval and be covered by a one-year parts and labor war-  
ranty, not including batteries or accessories.  
The receiver shall be the Williams Sound Corp. model WIR RX14-2.  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Four-Channel Receiver, Model RX22-4  
The receiver shall be a body-pack type with IR detector lens behind face of the unit. The unit shall have a lanyard for  
hands-free operation. The receiver shall have a rotary-type volume control. The receiver shall operate for 60 hours  
with two AA alkaline batteries and for 30 hours per charge with NiMH AA batteries. The receiver shall be charged  
without battery removal via charger contacts in the case. A drop-in charger accessory shall recharge the batteries in 8  
hours when used with CHG 3512 charger. The receiver shall be housed in an impact resistant plastic case with a  
hinged battery door that does not separate from the receiver. The receiver shall receive 2.3 MHz, 2.8 MHz, 3.3 MHz  
or 3.8 MHz modulated IR signals with 50 µS de-emphasis. The receiver shall have a 3.5 mm stereo phone jack and  
accommodate low-impedance mono or stereo earphones and headphones. The receiver shall accommodate neckloop  
telecoil couplers. The receivers shall provide 110 dB SSPL90 output with EAR 013 earbud-type earphone.  
The system electrical frequency response shall be 25 Hz to 16 kHz, +1, -3 dB and the signal-to-noise ratio shall be 60 dB.  
The receiver shall have CE, FCC, RoHS, and WEEE approval. The receiver shall be covered by a five-year parts and labor  
warranty, excluding earphones, headphones, batteries and chargers.  
The receiver shall be the Williams Sound Corp. model WIR RX22-4.  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
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SoundPlus® Language Interpretation System • Model WIR SYS 4  
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Contact:  
United States  
Williams Sound Corp.  
10321 W. 70th Street  
Eden Prairie, MN 55344  
Phone: 800-328-6190 or 952-943-2252  
Fax: 952-943-2174  
Canada  
Thorvin Electronics  
2861 Sherwood Heights Dr. Units 36-37  
Oakville, ON L6J-7K1 Canada  
Phone: 800-323-6634 or 905-829-3040  
Fax: 905-829-4196  
United Kingdom  
Sound Associates  
Keeble House, 81 Island Farm Road  
West Molesey, Surrey KT 2SA  
United Kingdom  
Phone: (44) 020 8939 5900  
Fax: (44) 020 8939 5901  
Asia, Australia, Europe, Latin America, South America, South Africa  
International Sales Department  
Williams Sound Corp.  
10321 W. 70th Street  
Eden Prairie, MN 55344 USA  
Phone: +1 952 224 7791  
Fax: +1 952 943 2174  
NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!  
©2006, Williams Sound Corp. MCAT 030D  
12  
 

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