Williams Sound RX12-4 User Manual

SoundPlus

Williams Sound

®

Helping People Hear

RX12-4 Front View

4channel

IR

Williams Sound

RX12-4 T op View

EAR

On

V olume

Channel

OFF

1

2

3

4

Description:

The RX12-4 is a four-channel infrared receiver, compatible with transmitters operating on the 2.3-3.8 MHz
frequency bandwidth. The sleek, comfortable design features a convenient rotary channel selector and an
easy-to-use on/off/volume control. The RX12-4 can be used with mono or stereo headphones and earphones, or
a neckloop. Dual infrared detectors provide maximum sensitivity and operating range.

Applications:

• Simultaneous Interpretation • Audio Description • Conferences • Multi-Media Rooms

• Boardrooms • Courtrooms • Schools • Universities • Cinemas • Churches

WIR RX12-4 Receiver:

Receiver Style: Body-Pack, dual-lens detector, lanyard
Size: 3-5/8" L x 2-3/8" W x 7/8" H (9.2 cm x 6 cm x 2.2 cm)
Weight: 4.5 oz (127 g) with batteries
Color and Material: Gray, shatter-proof polyallomer
Lanyard: 3 ft (.91 m), allows receiver to be warn around the neck
Operating T emperatur e: -10° C to +50° C
Battery T ype: 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 200 and CHG 1600 Chargers
Carrier Frequency: Channel 1: 2.3 MHz, Channel 2: 2.8 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

Indicators: Red LED “ON” indicator, flashes to indicate Low battery
Audio Output Jacks: 3.5 mm stereo mini phone jack

Audio Output Power: 15 mW max at 32 Ω
Acoustic Output: 125 dB SSPL90 with HED 002; 110 dB SSPL90 w/ EAR 013
Sensitivity: Better than 1 nW/cm2for 40 dB signal-to-noise ratio
Approvals: CE, FCC, Industry Canada, AS
Warranty: 5 years on receiver, 90 days on accessories
Compatible Headphones/Earphones: Mono or stereo, 8-32 ohms, 3.5 mm mini phone plug,

Infrared Receiver, Model WIR RX12-4

Channel 3: 3.3 MHz, Channel 4: 3.8 MHz

Channel Selector: four-position rotary switch

Accepts 3.5 mm mono or stereo phone plug

HED 002, HED 021, EAR 013, EAR 014, EAR 022

®

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

©2005, Williams Sound Corp. MCAT 019A

1

SoundPlus

Williams Sound

®

Helping People Hear

Bid Specs:

The receiver shall be a body-pack type with an IR detector lens on the 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 14 hours.
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
125 dB SSPL90 output with HED 002 headphone and 110 dB SSPL90 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, Industry Canada and AS 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 RX12-4.

Contact:

United States and Mexico

Williams Sound Corp.
10321 W. 70th Street
Eden Prairie, MN 55344-3446
Ph: 800-328-6190 / 952-943-2252 / FAX: [phone]
Web: www.williamssound.com
Email: [e-mail]

Infrared Receiver, Model WIR RX12-4

®

Canada

Thorvin Electronics
2861 Sherwood Heights Dr. Units 36-37
Oakville, ON L6J-7K1 Canada
Ph: 800-323-6634 / 905-829-3040 / FAX: [phone]
Web: www.thorvinelectronics.com

South America

DPTech
SIA Trecho 3/4 Lote 335 2°. Andar
71200-030 Brasília, DF
BRAZIL
Ph: (5561) 361-1384
Fax: [phone]
Web: www.dptech.com.br
Email: [e-mail]

Europe and Asia

International Sales Department
Williams Sound Corp.
10321 W. 70th Street
Eden Prairie, MN 55344 USA
Phone: [phone] or [phone]
Fax: [phone]
Email: [e-mail]
Web: www.williamssound.com

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

©2005, Williams Sound Corp. MCAT 019A

2