Bang & Olufsen MMC-1

Data[edit]

General:

Technical data from test report

MM pickup
- Frequency range 20 Hz to 20 kHz, ± 1dB
Pickup needle: square cross-section 0.1 x 0.1 mm, crystal-oriented rod, contact-line grind
Measured values [for comparison: manufacturer's data]
Depth scanning capability: 10 mN: 80 um; just under 12.5 mN: 90 um
Height-sensing capability: 10 mN: 0.45/0.84
Frequency intermodulation: 10 mN: 0.30/0.46%
Vertical tracking angle 19° [-°].
Transfer factor and source impedance
- 0.8 mV-s/cm £ -47 dBV [> 0.6 mV-s/cm]
- 650 Q + -H [-Q + -H]
Channel balance: 0.3dB[<1 dB]
Crosstalk attenuation: 30/32 dB [> 30 dB]
Pickup mass: 1.6 g [1.6 g]
Needle compliance (vertical): approx. 10 Hz: 29 um/mN
Recommended effective tonearm mass (for vertical resonance 14 to 10 Hz): up to 5 g = maximum light
Recommended termination values: CLast:250pF;RLast:47kQ

Report on this from "Hifi Museum":
Bang & Olufsen MMC-1:
Very good low end sampling capability, satisfactory high end sampling capability. Very good FIM behaviour. Relatively small transfer factor. Excellent crosstalk attenuation. Slight treble drop in frequency response. No treble resonance detectable in the transmission range. Music listening test: Slightly less exposed overtone range in pink noise. Mozart: slightly softer drawing in the high violin registers. Piano: clean pickup, slightly less impulse harshness in the treble, less contour sharpness in the bass. Shure TTR 115: 5th level clean. Shure TTR 117:5. level unclean. Overall verdict: Top class MM cartridge, suitable for very light tonearms. Price-quality ratio: not particularly favourable.