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Sennheiser DDA 83 portable infrared system

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Quick Overview

The Sennheiser DDA 83 is a portable infrared hearing system to assist hearing impaired people. The system is supplied with everything needed to provide basic ir hearing support (up to 80 sq/m), and is stored in a heavy duty transport case. A sign is also provided to advise customers that the system is available.

The system is very easy to use without any prior experience of the equipment. Each system is supplied with laminated user instructions.

Have you considered a Sennsis portable infrared hearing system? Click here for more information.

Sennheiser DDA 83 portable infrared system

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  • Sennheiser DDA 83 portable infrared system

Details

General Description

The Sennheiser DDA 83 is a portable infrared hearing system to assist hearing impaired people. The system is supplied with everything needed to provide basic ir hearing support (up to 80 sq/m), and is stored in a heavy duty transport case.

The system comprises of a miniature ir radiator mounted on a telescopic table stand, a sensitive condenser microphone with desktop microphone base, an induction neck loop ir receiver (for use with a hearing aid), a stethoset ir receiver (to be used by a non-hearing aid wearer), a two way charger, connection leads and a transport/storage case.

The system is very easy to use without any prior experience of the equipment. Each system is supplied with laminated user instructions.

Features

Quick to setup
Easy to use
Coverage up to 80 sq/m
Suitable for confidential meetings
Equality Act compliant

Technical Data

SI30 radiator
Modulation FM
Nominal deviation +/- 50 kHz
Carrier frequencies 2.3 MHz + 2.8 MHz
Audio-XLR connector 3pin-Texas- Socket
Input voltage range 45 mV- 4V
Output impedance 50 Ohm
IR Diodes 11
Max. coverage area 80 m²
Effective radiated power 0.5 W
Operating voltage (mains) 24-27 V DC
Current consumption 180 mA
Dimensions 118 x 25 x 90 mm
Weight 140 g
RF output 3.5 mm mono
Input voltage range 45 mV.....4 V
NT 20-1 UK PSU
Output voltage: approx. 24 V DC  
Output current: approx. 200 mA
HDI 830 stethoset receiver
Modulation FM, stereo
Receiving frequency 2.3/2.8 MHz
Frequency response (headphones) 50 - 16,000 Hz
Max. Sound pressure level (active) 125 dB (1 kHz)
THD, total harmonic distortion < 1 %
Signal-to-noise ratio typ. 75 dB (A)
Operating time (Accupack) up to 12 hrs
Charging time approx 3 hrs
Weight incl. Accu approx. 68 g
RI 830S with EZT 3011 neck loop
Modulation FM, stereo
Receiving frequency 2.3/2.8 MHz
THD, total harmonic distortion < 1 %
Signal-to-noise ratio typ. 75 dB(A)
Operating time (Accupack) up to 12 hrs
Charging time approx 3 hrs
Weight incl. Accu approx. 50 g
Dimensions 70 x 60 x 26 mm
ME 34 microphone capsule
Transducer principle (Microphone) pre-polarised condenser microphone
Pick-up pattern cardioid
Acoustics pressure gradient transducer
Frequency response (microphone) 40 Hz - 20 kHz
Impedance 50 Ohm
Min. terminating impedance 1 kOhm
Maximum sound pressure level (passive) 130 dB SPL
Equivalent noise level 26 dB (A)
Equivalent noise level weighted as per CCIR 468-3 37 dB
Phantom powering P12 - P48
Current consumption 250 μA
Weight approx. 3 oz
Dimensions ø12 x L18 mm
MZH 3015 gooseneck microphone
Dimensions 150 mm
Diameter 6 mm
Weight 73 g

Delivery Includes

1 SI30 modulator radiator
1 NT 20-1 UK power supply
1 HDI 830 stethoset receiver
1 RI 830S with EZT 3011 neck loop
1 ME 34 cardioid mic capsule
1 MZH 3015 gooseneck microphone
1 2-way charger
1 IZK20 clamp
1 KM 233 table stand
1 protective storage case
1 line input cable
1 mic input cable

Additional Information

Manufacturer Sennheiser
pdf N/A

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