Main Features

The Ear Force X4 Dolby surround sound gaming headphone system uses an infrared signal to transmit wireless game audio from the XBOX 360 to the X4 wireless headphones. The X4 transmitter uses Dolby Headphone technology to produce a more realistic game experience by recreating the sound of a 5.1 channel speaker system with the X4 stereo headphones. The X4 incorporates the following features designed specifically to enhance Xbox 360 gaming:

￿Dolby Digital, Dolby Pro Logic II and Dolby Headphone processing technology.

￿Digital and analog inputs for listening to the XBOX and other audio sources.

￿High powered IR beam covers a wide reception range for freedom of movement during game play.

￿Large, soft ear cushions and lightweight design for optimum comfort during long gaming sessions.

￿Chat Boost automatically adjusts Xbox Live chat levels during loud game play.

￿Microphone monitor lets you hear what you’re saying.

￿Bass boost enhances deep game sounds.

￿Independent volume controls for balancing game and chat levels.

￿Automatic power-off function turns off the headphones after a period of no sound to conserve battery power.

Technical Specifications

X4 Transmitter

￿IR FM Modulated carrier transmission (2.3/2.8MHz).

￿Automatic shut down of carrier transmission after approx. 2 minutes of silence

￿IR transmission range at zero degrees > 30 feet.

￿Automatic Gain Control (AGC) on FM transmitter limits carrier over-modulation.

￿Frequency response: 20Hz - 20kHz

￿Optical TOSLINK digital audio input compatible with 48kHz digital audio stream

￿Optical TOSLINK digital audio output pass-through of digital input stream.

￿150MIPS Digital Signal Processor for Dolby processing

￿Maximum analog input level with volume control on maximum setting: 2Vpp (700mV rms). Input sensitivity may be adjusted to accept higher level signals by lowering the volume control.

￿Weight: 8.4 Oz (240g)

￿Power adapter: 9VDC @360mA (100VAC - 240VAC)

X4 Headphones

￿50mm diameter speakers with neodymium magnets

￿IR FM modulated carrier reception (2.3/2.8MHz)

￿Speaker Frequency Response: 20Hz - 20kHz , >120dB SPL @ 1kHz

￿Condenser Microphone Frequency Response: 50Hz - 15kHz

￿Headphone Amplifier: Stereo DC-coupled, 35mW/ch, THD <1%, Frequency Response: DC - 30kHz

￿Bass Boost: +9dB @20Hz - 150Hz

￿Chat Boost Talkback Expander: +10dB gain boost at maximum game volume

￿Audio mutes automatically when carrier signal is lost

￿Quad IR sensors for full 360 degree reception range

￿Operates on dual AAA batteries

￿Automatic battery power shut down after approx 2 minutes of carrier loss

￿Battery life: Greater than 20 hours of continuous use with alkaline cells

￿Weight: 9.5 Oz (270g)

Ear Force X4 Operating Instructions. Version 1.0 Copyright 2008 Voyetra Turtle Beach, Inc. All Rights Reserved

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