Blaupunkt CR-4000 (circa 1981)
Documentation on the Blaupunkt CR-4000 is thin. This is about all that survives on paper for the model.
It played cassettes forward only, with no rewind, and had treble and balance controls. Measured total harmonic distortion at reference level was 1.8%. That was unremarkable for the era but competitive at its price point.
Known specifications:
- Format: Cassette (no auto-reverse)
- Output: 5 watts (7 dBW) per channel continuous into 4 ohms at 1 kHz, ≤10% THD
- THD (reference): 1.8% at reference level 333 (1 kHz, −10 dB)
- Controls: Treble, balance
- Fast-forward: Yes; Rewind: No
- Mounting: In-dash
- Dimensions: 1¾″ H × 7″ W × 5¼″ D
- Price (1981): $250.60
No service manuals, factory literature, or further contemporary reviews have been located.
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