Koss JR900 - Manual

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Congratulations on your choice of the Koss JR/900 Cordless RF Stereophone System. Now you can enjoy the
Sound of Koss anywhere in your home- even outdooors-without the cord. The Koss JR/900 RF System
Includes:
1. KossJR/900S Stereophones (1)
2. Koss JR/900T Transmitter (1)
3. Koss JR/900A Adapter (1)
4. 3.5 mm male stereo plug to dual RCA stereo plug connecting cord.
5. DC male to DC male recharge cord
6. Adapter plug
7. 3.5mm Stereo Jack
8. NICAD Battery Pack
IMPORTANT INFORMATION. READ BEFORE USING!
Located on the side of the transmitter is a charger output jack that is used to recharge the internal battery of
the JR/900RF System
The NICAD(nickel cadmium) battery pack of the JR/900 must be fully charged prior to operation. An initial
charge of 24 hours is required to ensure the extended life of the NICAD battery pack. Be sure the
stereophone is in the "OFF" position. (SEE "To recharge the NICAD battery pack")
JR/900 OPERATING CONTROLS
Volume Control
Controls the level of the audio signal input to the transmitter. Adjust for the highest non-distorted level as
heard through the JR/900S stereophones.
ON/OFF Switch
Place this switch in the ON position when using the stereophones. The ON indicator will be red. Place this
switch in the OFF position when you are charging the battery or when the stereophones are not in use NOTE:
When the ON/OFF switch is in the ON position, the on indicator light will light even when recharging is
necessary.
Red LED/ Green LED
Red indicates the transmitter is operating. Green indicates the transmitter is charging when connected to
stereophones.
Recharge Jack
The charger cable plugs into the transmitter at the charger input jack and the stereophones' charger cable
input jack. This connection is made only when recharging the battery pack ( SEE " To recharge the NICAD
battery pack")
Left/ Right RCA input Jack
Use dual RCA connecting cord (#4) to connect transmitter to the audio output.
AC Input
Connects 24VDC, 150mA ac adapter to transmitter.
Channel Selector
The channel selector is pre-set at the factory. If you encounter interference the channel selector can be re-set
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