: Usually a slider or knob to adjust Bass/Treble.
Robust knobs and switches built to last decades.
Usage tips
If the volume "crackles" when turned, use a specialized electronic contact cleaner (like DeoxIT). Spray a small amount into the potentiometer and rotate the knob 20 times.
: Good for consumer-facing operation guides rather than technical repairs.
| Parameter | Specification | |-----------|----------------| | | Blaupunkt GmbH 815 Portable | | Frequency Range | AM: 530–1600 kHz; FM: 88–108 MHz | | Power Output | 2 x 3W RMS (10% THD) | | Cassette Mechanism | Auto-stop (play/record only on some units) | | Speakers | 2 x 4" full-range, 4 ohms | | Headphone Impedance | 16–32 ohms recommended | | Power Supply | 230V AC, 50Hz or 9V DC (6 x D cells) | | Dimensions (W x H x D) | 420 x 150 x 110 mm | | Weight | 2.8 kg (without batteries) |