Williams Sound WIR SYS 2 User Manual

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Page 1

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Description:

The Value Courtroom System, model WIR SYS 2, is the ideal hearing assistance package for courtrooms with limited budget resources. Participants wear headset style receivers to listen to the courtroom proceeding at the volume of their comfort level anywhere in a 4,000 ft

area. For the severely hard of hearing, 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 security: the message of the proceeding will not travel outside the walls of the courtroom.

Each WIR SYS 2 package includes: one (1) TX9 emitter, one (1) MOD 232 modulator, three (3) headset RX14-2 receivers, one (1) RX22-4 receiver, one (1) HED 021 Headphone, one (1) NKL 001 neckloop and one (1) RPK 005 rack panel kit. The WIR SYS 2 meets and exceeds government ADA regulations for public hearing assistance, and is backed by a fiveyear warranty.*

Size, Weight: 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) Color: 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

Power Supply: Wall Transformer, 24VAC, 50-60 Hz, 15VA

North America: TFP 016, UL/CSA Europe: TFP 027-01, 2-pin Schuko plug, CE

UK: TFP 027-02, 3-pin UK plug, CE Modulation: FM Wideband, +50kHz deviation, 50uS pre-emphasis Carrier Frequency: Channel A: Selectable, 2.3/2.8/3.3/3.8 MHz,

Channel B: Selectable, 2.3/2.8/3.3/3.8 MHz Signal-to-Noise Ratio: More than 60dB Frequency Response: 30 to 16,000 Hz, +1 dB, -3 dB, electrical response Total Harmonic Distortion: Less than 2%, electrical response Audio Processing: Compression (slope) adjustable from 1:1 to 4:1

Switchable compression gain: Moderate: 16 dB. Max: 33 dB Auto Carrier Shut-Off: 15-minute timer shuts off carrier when no audio is present (can be disabled)

MOD 232 Modulator:

Two Channel Infrared System Modulator

Williams Sound

Power

Phones

+9 +6 +3 0

-3

-6

-9

-12

-15

-18

+9 +6 +3 0

-3

-6

-9

-12

-15

-18

3.8

3.3

2.8

2.3

Level

Compress

3.8

3.3

2.8

2.3

Compress

Inputs Mixed

Stereo

CH A

CH B

Frequency

(MHz)

Frequency

(MHz)

Channel A Channel B

Microprocessor Controlled

Frequency Synthesized

Fig. 1: MOD 232 Front Panel

Power Switch: Two-position push button, ON/OFF Power Indicator: Green LED Audio Level Controls: CHA and CHB Input Level, rotary knobs Audio Indicators: CHA and CHB Audio Level, 10-segment LED’s Carrier LEDs: 4 green LED carrier “on” indicators per channel (indicates frequency, malfunctions) Compress Control: 1:1 to 4:1 Input Mix LED: Indicates inputs A and B audio are mixed and transmitted by CHA, CHB off Stereo LED: Indicates stereo mode Phones Switch: Selects CH1 or CH2 for phones when not in stereo mode Phones Output: 1/4" TRS headphone jack. Accepts stereo, mono, and any impedance phones. Infrared Test LED: IR LED for receiver testing, monitoring, and audio signal testing.

ADA COURTROOM ASSISTIVE LISTENING SYSTEM

*90 days on accessories.

Page 2

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Dimensions, Weight: 11.25" W x 6.25" H x 2.125" D (28.6 cm x 15.9 cm x 5.4 cm), 1.9 lbs (0.9 kg) Color: Black with white legends, red acrylic lens Power Supply: Wall Transformer, 24 VAC, 50-60 Hz, 35 VA, 3-pin MOLEX Connector

North America: TFP 010, UL/CSA

Europe: TFP 027-01, 2-pin Schuko plug, CE

UK: TFP 027-02, 3-pin UK plug, CE

Note: Each WIR TX9 requires its own power supply Power Cable: NEC Class 2 wiring, two-conductor, 18 ga, 200’ (61 m) max. length Indicators: Green LED power indicator, red LED baseband indicator Carrier Frequency: 50 kHz to 8 MHz Emitter IR Power: 3.5 watts Coverage Area: 28,000 ft2(2,600 m2) in single-channel mode when using the RX22-4 Receiver

18,000 ft2(1,700 m2) in two-channel mode when using the RX22-4 Receiver

3,500 ft2(325 m2) in single-channel mode when using the RX14-2 Receiver

3,063 ft2(285 m2) in single-channel mode when using the RX16 Receiver

(See coverage area diagrams) Baseband Input: BNC, 100 mV per carrier, 50 Ω, for use with WIR TX9 or MOD 232 only Baseband Output: BNC, 50 Ω, for use with TX9 only Baseband Cable: RG 58 Coax, BNC connectors, maximum 1000' (300 m) length Operating Requirements: 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere Mounting Kits: Wall or Ceiling Mount: BKT 024 Omnidirectional mount, Mic Stand Kit: SS-11 or SS-6 Warranty: 5 years on Emitter, 90 days on accessories Approvals: CE, FCC, RoHS, WEEE Compatible Receivers: WIR RX22-4 Four-Channel Receiver, RX14-2 Two-Channel Receiver,

RX16 Two-Channel Receiver

Configuration

Switches

Input CH A Input CH B

Audio Line

Output

CH A

CH B

50 Ohms

100 Ohms

Made in USA

24V

24 VAC, 15 VA, 50-60 Hz

Power In

Baseband

Input Output Output

MOD 232 Infrared System Modulator

Plug

Williams Sound

12345678

Fig. 2: MOD 232 Rear Panel

Power Input: 3-Pin Molex, 24 VAC, 50-60 Hz, 15 VA Audio Input Jack: CHA and CHB combination XLR/TRS jack Mic Level: Balanced, Lo-Z, 100 µV min. to 90 mV max., 1mV nominal, 3 kΩ input impedance, sup-

plies switchable simplex power per DIN 45596 for condenser mics Line Level: Balanced or unbalanced, 21 mV min. to 10 V max., 212 mV nominal, 100 kΩ Audio Line Output Jacks: RCA Jack, CHA and CHB, 500 mV, unbalanced, 100 Ω source impedance, load imped-

ance must be greater than 1kΩ Configuration Switches: CHA and CHB 8-position DIP switch, selects Mic/Line input, compressor gain, simplex

power, discrete or mixed inputs, carrier frequency, channel disable, auto shut-off

timer Baseband Input Jack: BNC, allows mixing with additional MOD 232 Modulator (4CH operation), 100mV, 50Ω

input impedance, use with MOD 232, BNC, RG-58 Cable Baseband Output Jack: Two BNC jacks carry baseband signal, 100 mV/channel, 50 Ω source impedance, for use

with WIR TX9 or MOD 232 only Approvals: CE, FCC, RoHS, WEEE Operating Requirements: 0-50º C ambient temperature, non-condensing, non-corrosive atmosphere Warranty: 5 years on modulator, 90 days on accessories

WIR TX9 Emitter:

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SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Fig. 3: WIR TX9 Rear Panel

Fig. 4: Receiver Coverage Area with TX9 Emitter in Single Channel Mode

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.

RX22-4

RX14-2

RX16

Feet

-10

-20

-30

-40

-50

-60

-70

-80

-90 0

Feet

Multi-Channel Infrared Transmitter

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING: TO REDUCE THE RISK OF FIRE OR

Class 1

ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

LED Product

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 RG58 Coax,1000 ft. (350m) max. length

Williams Sound Corp., Minneapolis, Minnesota, USA Patent Pending

24 VACNC

Power In:

24VAC

Plug

50-60Hz

35VA

Power On Baseband On

RoHS

Mounting

Bracket

Made in U.S.A.

90 100 110 120 130 140 150 160

www.williamssound.com

Baseband Signal Wiring:

Use 50 Ohm Coaxial Cable (RG58)

Baseband (Modulation)

InOut Out

50 Ohms

Receiver Coverage Area with TX9 Transmitter in Single Channel Mode

RX22-4 Receiver

RX14-2 Receiver

RX16 Receiver

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SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

To determine the best location for the emitter, it helps to think of the IR emitter as an invisible floodlight. 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. 5: 3-Dimension Foot Pattern

Fig. 6: Vertical Beam Spread

The TX9 floods the listening audience with a cone shape light pattern as shown here.

Minimum Receiver Range When Operating with a TX9 Emitter in Single Channel Mode

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.

RX22-4 Receiver: 150' (45 m)

Center Of Emitter Beam

RX14-2: 80' (24 m) RX16: 70' (21 m)

(Range)

TX9

30'

SCREEN

STAGE

Page 5

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Maximum Range When Using the RX22-4 Infrared Receiver

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.

Fig. 7: Horizontal and Vertical Radiation Polar Plots

HORIZONTAL RADIATION POLAR PATTERNS

DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR

METERS

200

180

160

140

120

100

FEET

– 90

– 80

VERTICAL RADIATION POLAR PATTERNS

DISTANCE FROM EMITTER TO 1 nW/sq cm CONTOUR

– 90

METERS

200

180

160

140

120

100

FEET

– 70

– 60

– 50

– 40

– 30

– 20

– 10

– 80

– 70

– 60

– 50

– 40

– 30

– 20

– 10

1 Channel, 1 nW/sq cm (Approx. 28000 sq ft, 2600 sq m)

2 Channel, 1 nW/sq cm per channel (Approx. 18000 sq ft, 1700 sq m)

4 Channel, 1 nW/sq cm per channel (Approx. 11000 sq ft, 1000 sq m)

1 Channel, 1 nW/sq cm

2 Channels, 1 nW/sq cm per channel

4 Channels, 1 nW/sq cm per channel

Page 6

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Fig. 8a: Overlapping Illumination Patterns to Cover Larger Listening Areas

Multiple Emitters Installed to Maximize Coverage

Fig. 8b: Overlapping Illumination Patterns to Cover Larger Listening Areas

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 depending 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.

When two emitters are used at the same emission point in single channel mode, the overall coverage area increses 50%. When using an RX22-4 receiver, as a result, the coverage area will increase to an estimated 42,000 ft

(3,902 m2); the RX14-2 will increase to 5,250 ft2(488 m2); the RX16 will increase to 4,590 ft2(426 m2).

TX9 TX9

Coverage Area

TX9

with Single Emitter

Coverage Area with Second Emitter Added to Same Emission Point (50% increase)

Page 7

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Receiver Style: Body-Pack, dual-lens detector, lanyard Size: 4.5" L x 2.85" W x 1.2" H (114.3 mm x 72.4 mm x

30.4 mm) Weight: 4.6 oz (130 g) with batteries Color and Material: Black Lanyard: 3 ft (.91 m), allows receiver to be worn around the neck Operating Temperature: -10° C to +50° C Battery Type: 2 x AA, alkaline (BAT 001) or NiMH (BAT 026) Battery Life: Alkaline: 60 hours, NiMH: 30 hours/charge Battery Drain: 25 mA, nominal Charging Contacts: For use only with CHG 3512 Carrier Frequency: Channel 1: 2.3 MHz, Channel 2: 2.8 MHz

Channel 3: 3.3 MHz, Channel 4: 3.8 MHz De-Emphasis: 50 uS FM Deviation: ±50 kHz Signal-to-Noise Ratio: 60dB min. Squelch: Receiver squelches (mutes) at 40 dB S/N ratio Frequency Response: 25 Hz to 16 KHz, +1 dB, -3 dB, electrical response Total Harmonic Distortion: Less than 1%, electrical response Controls: ON/OFF/VOLUME: combination thumbwheel knob

Channel Selector: four-position rotary switch Indicators: Red LED “ON” indicator, flashes to indicate Low battery Audio Output Jacks: 3.5 mm stereo mini phone jack

Accepts 3.5 mm mono or stereo phone plug Audio Output Power: 15 mW max at 32 Ω Acoustic Output: 110 dB SSPL90 w/ EAR 013 Sensitivity: Better than 1 nW/cm2for 40 dB signal-to-noise ratio Approvals: CE, FCC, RoHS, WEEE 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

WIR RX22-4 Receiver:

Fig. 9: WIR RX22-4 Receiver

Earphone

Jack

"On"

Indicator LED

RX22-4 Top

Channel

Selector Knob

OFF

On/Off

Volume Switch

RX22-4 Front

Page 8

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Receiver Style: Headset Earpad Size: 2.5" (6.5 cm) diameter, adjustable headband Weight: 6.7 oz (191 g) without batteries Color and Material: Black, plastic Operating Range: Up to 3,500 ft2(325 m2) when using a single WIR TX9 Emitter Battery Type: AAA Alkaline batteries (BAT 010). AAA NiMH (BAT 022) optional Battery Life: Alkaline: 50 hours, NiMH: 8 hours/charge Battery Drain: 25 mA, nominal Controls: ON/OFF switch

(2) Thumbwheel volume control knob, left and right

(1) Frequency push-button selector, 2.3 MHz or 2.8 MHz Frequency Response: 50 Hz – 12 kHz Signal-to-Noise Ratio: 58 dB (IEC weighted) Deviation: FM wideband modulation Acoustic Output: 118 dB MAX SSPL90, +/- 1 dB with 6 cc coupler Approvals: CE, RoHS, WEEE Warranty: 1-year warranty (excludes physical damage)

WIR RX14-2 Receiver:

Fig. 10 WIR RX14-2 Side View

Infrared “Eye”

AAA

Battery

Compartment

On/Off

Right Earphone

OFF

+–

Volume

Left Earphone

+–

Volume

Infrared “Eye”

AAA Battery Compartment

Frequency Selector: 2.3 MHz or 2.8 MHz

Page 9

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Two-Channel System Diagram

Fig. 11: Two-Channel System

To Additional

Emitters (if necessary)

WIR TX9 Emitter (rear)

Multi-Channel Infrared Transmitter

WARNING: TO REDUCE THE RISK OF FIRE OR

Class 1

ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

LED Product

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 RG58 Coax,1000 ft. (350m) max. length

Williams Sound Corp., Minneapolis, Minnesota, USA Patent Pending

24 VACNC

Power In:

24VAC

50-60Hz

35VA

RoHS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Plug

Power On Baseband On

Mounting

Made in U.S.A.

Bracket

www.williamssound.com

Baseband Signal Wiring:

Use 50 Ohm Coaxial Cable (RG58)

Baseband (Modulation)

InOut Out

50 Ohms

MOD 232 Modulator (Rear)

Input CH A Input CH B

Made in USA

CHA

Audio In

SOUND SYSTEM

Audio Line

12345678

CH A

12345678

CH B

Configuration

CH B

Switches

100 Ohms

CHB

Audio In

Output

MOD 232 Infrared System Modulator

Williams Sound

Baseband

OutputOutputInput

Power In

24 VAC, 15 VA, 50-60 Hz

50 Ohms

24V

Plug

Baseband Signal

RX22-4 Receiver

(wireless)

Page 10

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

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 headphone 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 balanced 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-directional 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 baseband 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 coverage 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 output, +/- 1 dB, and a signal-to-noise ratio of 58 dB. The receiver shall operate up to 50 hours when using AAA alkaline 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 ft

(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 warranty, not including batteries or accessories.

The receiver shall be the Williams Sound Corp. model WIR RX14-2.

Page 11

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



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!

Page 12

SoundPlus

Value Courtroom System • Model WIR SYS 2

SoundPlus®Value Courtroom System • Model WIR SYS 2



NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

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 Web: www.williamssound.com Email: info@williamssound.com

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 Web: www.thorvinelectronics.com

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 Web: www.soundassociates.co.uk Email: jmurdoch@soundassociates.com

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 Email: info@williamssound.com Web: www.williamssound.com

Contact: