Sony MDR-IF240RK - Infrared Stereo Headphone System

Sony MDR-IF240RK - Infrared Wireless Stereo Headphone System

Sony MDR-IF240RK - Infrared Wireless Stereo Headphone System

Sony MDR-IF240RK - Infrared Stereo Headphone System

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Sony MDR-IF240RK overview

  • 1Description

The Sony MDR-IF240RK is a low-cost Infrared wireless headphone system, designed for the home enjoyment monitoring of, and simple connection, to televisions, stereo tuners, and CD or minidisc components. The transmitter also functions as a battery charger, with an LED charging status indicator light, and the automatic headphone shutoff helps conserve battery life when the headphones are secured in the transmitter cradle.

The MDR-IF240RK NiMH battery powered headphones feature volume control, a mute function protecting the drivers from noise when no audio signal is present, and a self-adjusting headband for listening comfort. The headphones are equipped with 30mm drivers and PET low-mass diaphragms, for extended low and high end frequency reproduction. The system allows mobility within a transmission range of 24 feet.

Infrared wireless headphone system
2 separate Left, Right transmission channels
24' transmission range
Standard RCA phono and 1/8" stereo mini audio jacks on transmitter for connection to televisions, tuners, and CD or minidisc players
Comfortable, Open Air headphones with self-adjusting headband
30mm headphone drivers for improved frequency response, extended bass reproduction
High-rigidity PET diaphragms minmize distortion, low mass composite for improved high frequency reproduction
Auto Power On/Off for headphones conserves battery life, On when in use, Off when removed from head
Headphone Volume control; Mute function cuts sound to headphones when no signal is present, avoids noise
Rechargeable NiMH or AAA dry battery operation with up to 30 hr. NiMH battery life
LED battery charge indicator light for transmitter
NiMH batteries charged by transmitter; Auto Charge function when headphones are secured on transmitter with automatic shutoff for headphones
In the Box
Sony MDR-IF240RK - Infrared Wireless Stereo Headphone System
  • 9 Volt AC Power Adapter
  • Stereo Mini to Dual RCA Phono Connector Cable
  • Unimatch Stereo Mini to 1/4" Stereo Phone Adapter
  • BP-HP550 NiMH Rechargeable Battery
  • Owner's Manual
  • Limited 90-Day Warranty on Labor
  • Limited 1-Year Warranty on Parts
  • Table of Contents
    • 1Description

    Sony MDR-IF240RK specs

    Type Supra-Aural, Open Air, Dynamic Wireless Headphones
    Infrared Wireless Transmitter
    Frequency Range 18 Hz - 22 kHz
    Transmitting Frequency Range Right: 2.8 MHz
    Left: 2.3 MHz
    24' Transmission/Reception @ 90°
    Approx. 10' @ 45°
    Impedance 24 Ohms @ 1 kHz
    Sensitivity (0 VU) 105 db/mW(Headphones)
    Maximum Input Power Not Specified by Manufacturer
    Connectors Transmitter:
    2 x RCA Phono(L, R), Unbalanced
    1 x 1/8" Stereo Mini Jack
    1 x 9 VDC In Jack
    Weight Transmitter: 4.06 oz (115 g)
    Headphones: 6.3 oz (180 g)(with battery)

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