Sennheiser RS 4 manual What to do if, Accessories, HDR 4 or HDR

What to do if ...

... the volume is up but you cannot hear anything:

￿There is no audio signal available. Check the transmitter connection. Is the volume at the headphone socket of your hi-fi system or TV sufficient?

￿Are you still within the transmitter’s range?

￿Is the receiver on the same frequency as the transmitter?

... the sound is distorted:	￿ The headphone accuplug has gone flat, please
	recharge it immediately.
... the sound is slightly noisy:	￿ You are about to leave the transmitter’s maximum range.
	Soon transmission will be interrupted completely.
	￿ The transmitter’s modulation level is too low. Increase
	the volume on your hi-fi system (see also page 18).
... you can hear twittering and	￿ Two transmitters are interfering!
chirping, and the sound is “squeezed”:	Choose a different transmission channel.

Accessories

		The following items are available to complement your system:
•	BA 151	Rechargeable accuplug as a spare, for use when
		the supplied accuplug is being recharged
•	L 150	Charger for recharging additional BA 151
		accuplugs (recommended when more than two
		headphone receivers are used with one
		transmitter)
•	HDR 4 or HDR 4-9	Additional headphone receivers

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