The radio section covered long, medium and FM bands. Four favourite FM stations could be pre-set for instant recall. A horizontal thumbwheel on the front of the unit controlled manual tuning: the large graph-grid tuning scale was very easy to see and use.
The record deck featured the (then) latest Bang & Olufsen tone arm carrying the ultra-light MMC 5 pickup. Operation was entirely automatic and needed just a single touch on the PHONO button. Built-in logic circuits identified the size and speed of any record placed on the lightweight turn-table and would cue the pickup arm onto the run-in groove with absolute accuracy and safety.
The cassette recorder had electronic control so you could switch directly between, say, fast rewind and PLAY without danger of straining the mechanism or damaging the tape. Dolby B noise reduction and automatic selection between ferric and chrome tapes was included. Metal tapes could also be used, so you were assured of top class sound quality for those really special recordings.
Listening to tapes was also quick and easy: the NEXT button allowed you to scan the tape track by track until you found the one you wanted to hear.
The recommended speakers for use with this system were the Beovox X25.
Connections: Mono microphone; 2 pairs speakers; headphones; external tape recorder with two-way copying; AM and FM aerials
Power output RMS DIN/IEC: 2 x 25 watts / 4 ohms; 2 x 20 watts / 8 ohms
Type No. 2423: 2 x 15 watts / 4 ohms
Total harmonic distortion < 0.2 %
Intermodulation < 0.5 %
FM usable sensitivity mono < 15 dBf-2.5 µV/75 ohms
FM usable sensitivity stereo < 19 dBf-2.5 µV/75 ohms
FM Harmonic Distortion 65 dBf < 0.5 %
MW range 520 – 1610 kHz
Stylus (MMC 5) Elliptical diamond 6 x 17 µm
Recommended tracking force 15 mN / 1.5g
Frequency range 20 – 20,000 Hz +/- 3 dB
Wow and flutter, DIN < +/- 0.07 %
Wow and flutter, WRMS < +/- 0.035 %
Rumble weighted > 70 dB
Rumble unweighted > 50 dB
Noise reduction: Dolby B
Tape switch Auto ferro/chrom, manual metal
Wow and flutter < +/- 0.2 %
Frequency range metal/chrom/ferro 30 – 15,000 Hz
Signal-to-noise ratio
Metal Dolby NR
Chrome Dolby NR
Ferro Dolby NR
> 66 dB
> 65 dB
> 63 dB
Power supply:
2421: 220V
2422: 240V
2423: 120V
2425: 240V
2427: 240V
2428: 120V
2429: 220V
Power consumption 18 – 135 W
Dimensions W x H x D: 74 x 9.5 x 32.5 cm
Weight: 11 kg
Sockets for:2 pairs of speakers, extra cassette recorder, Compact Disc player, headphones, Microphone, AM10 Active Antenna
Connections: Headphone jack
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