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User and Installation
Guide
2.4 GHz DIGITAL
Wireless Headphones
Model 2000
R
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R User and Installation Guide Unpacking: Check that this package contains: One set of 2.4 GHz Digital Wireless Headphones, one 2.4 GHz Digital Audio transmitter, one AC adapter, one dual RCA audio cable, four NiMh batteries. Connecting the transmitter The transmitter provides 2 digital interfaces and 1 analog interface to connect to an audio source. Digital Audio Interface The transmitter accepts a digital audio signal at both the electrical and optical digital interface. By using one of
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R User and Installation Guide DC DC 9V 9V DA DAT TA A LR LR OUT OUT ANALOG ANALOG IN IN DIGIT DIGITAL AL IN IN AC adapter DC 9V 400 mA DIGITAL OUT Power outlet Digital Audio Source Using the electrical digital audio interface DC DC 9V 9V DA DAT TA A LR LR OUT OUT ANALOG ANALOG IN IN DIGIT DIGITAL AL IN IN AC adapter DC 9V 400 mA AUDIO Power outlet LINE OUT LR Analog Audio Source Using the analog audio interface Page 2
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R R R User and Installation Guide Placing the transmitter The operating range essentially depends on how many obstacles there are between the transmitter and the headphones. Therefore, it should be carefully considered where to place the transmitter. Below, two examples are given. In the first example, there are 4 walls between the transmitter and the receiver. The transmission may be interrupted. By locating the transmitter such as in the second example, reliable transmission to all of t
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R R User and Installation Guide Charging the batteries Prior to operating the headphones, the batteries have to be charged. Four rechargeable NiMh batteries are supplied. Insert two of the batteries into the battery charging bays of the transmitter. The two lights “Battery 1” and “Battery 2” of the transmitter will light to indicate that the batteries are being charged. In order to operate the headphones quickly, leave the batteries inside the charging bays for a few hours. In order to fu
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R User and Installation Guide Inserting the batteries into the headphones After charging the batteries, insert them into the headphones. There are two battery compartments, located on both sides, each housing one battery. To access each battery compartment, push on the outer edge of the battery lid. This will release the battery lid. Then lift the middle portion of the battery lid to gain access to the battery compartment. Insert the battery by pressing the minus pole of the battery again
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R User and Installation Guide Operating the headphones After powering up the transmitter, the transmit light will light for approximately 5 seconds while the transmitter initializes. After initialization, the transmit light will go out. Once audio is detected at any of the audio interfaces, the transmit light will light and the transmitter will transmit the audio signal. By default (or if no audio is present), the transmitter will select the analog audio interface. As soon as a signal is
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R User and Installation Guide Adjusting the analog audio interface level This step is only required if the analog audio interface is used. In order to achieve maximum audio volume at the headphones and maximum dynamics of the digital transmission and to avoid clipping of the audio, it is necessary to set the analog audio interface level of the transmitter to correspond with the maximum audio level of the audio source. This is done by turning the analog audio interface level control knob w
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R User and Installation Guide Problems and Solutions Table What is Happening Possible Why What to Do None of the Faulty AC adapter Check the power outlet and transmitter or faulty power outlet the AC adapter; if possible, interface indicators check for correct voltage of will light after DC the AC adapter power is applied The transmit light No audio present at Check the audio connection goes out after a few audio interface to the transmitter and ensure seconds and does that there is audio presen
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R User and Installation Guide What is Happening Possible Why What to Do Audio drops out Strong interference In some cases, there may be intermittently or strong interference preventing crackles proper transmission of the audio signal which can be caused by microwave ovens, cordless telephones, wireless networks or video transmitters. Either eliminate the interference, relocate the transmitter or use RangeBooster transmitters to improve reception. Batteries empty Check battery voltage or replace
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R User and Installation Guide Technical Specifications Transmitter: Audio transmission method: Digital Transmitter frequency: 2.4 GHz 1) Signal-to-Noise ratio (A-weighted): typ. 100 dB 1) Dynamic range: typ. 100 dB 1) Channel separation: typ. 100 dB 1) Harmonic distortion: typ. -90 dB Error correction: 1/2 rate FEC Audio sampling method: 64 times oversampling Transmitted data rate: > 3 Mbps Data available at high-speed data port Max. Transmitter output power:1mW Transmitter operating range (with
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Limited warranty WHAT YOUR WARRANTY COVERS This warranty extends only to the original user of the equipment (“you”, ”your”) and is limited to the purchase price of each part. Amphony and it’s affiliated companies (”we”, ”our”, ”us”) warrant this Wireless Headphone Set against defects in materials or workmanship as follows. LABOR: For a period of ninety (90) days from the original date of purchase, if we determine that the equipment is defective subject to the limitations of this warranty, we wil
