Blaupunkt ACR 4251 operating instructions Appendix, Mechanism/cassette tapes, Specifications

Appendix

Mechanism/cassette tapes

To avoid possible problems, you should not use cassette tapes longer than 60 or 90 minutes (C60/C90). Store your tapes in a cool place away from dirt, dust and temperatures exceeding 50° Celsius. Allow very cold tapes to warm up before playing them in order to avoid uneven transport. After approximately 100 hours of use, dust particles collected on the playback head or roller may lead to tape run problems and sound distortions.

Use a head cleaning tape to remove normal dirt build-up. For tougher cases, use a cotton swab (Q-Tip) soaked with alcohol. Do not attempt to clean by inserting a hard object into the player!

Specifications

Amplifier
Output power:	2 x 7 W RMS power
	acc. to DIN 45 324/3.1
	into 4 Ω
FM waveband
Sensitivity:	1.3 ∝ V at 26 dB
	signal-to-noise ratio
Frequency
response:	35 - 15 000 Hz
Tape player
Frequency
response:	40 - 14 000 Hz

Subject to modifications!

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