Historical Products

A perfect match
to tonearms

The Ortofon Optimum Match (OM) cartridges match most tonearms perfectly. If your tonearm has a standard headshell or a cartridge mount, then step up to optimal sound reproduction with OMs. A glance at anyone of these cartridges will reveal Ortofon's answer to perfect tonearm matching. Ingeniously tucked into the top of the mounting bracket is a tiny, removable weight-plate.

  • If your tonearm is an standard tonearm, just leave the weight-plate.
  • If your tonearm is one of the low mass types, then simply remove the weight. The mass of your OM cartridge is now a mere 2.5 g.

An OM cartridge from Ortofon makes it possible to upgrade the performance of an entire music system very easily by upgrading the stylus.

OM 3E, 5E, 10, 20, 30 and 40 technical data

Technical data OM 3E OM 5E OM 10 OM 20 OM 30 OM 40
Output voltage at 1000 Hz, 5cm/sec. 4 mV 4 mV 4 mV 4 mV 3.5 mV 3.5 mV
Channel balance at 1 kHz/dB 2,0  2,0  2,0  1,5  1,0  1,0 
Channel separation at 1 kHz/dB 22  22  22  25  25  27 
Frequency response Hz 20-18.000 20-20.000 20-22.000 20-22.000 20-27.000 20-30.000
Tracking ability (315Hz, lateral)/µm 60 65 70 80 90 95
Compliance, dynamic (lateral)/µm/mN  20 20  25  30 35  35 
Stylus type Elliptical Elliptical Elliptical Nude Elliptical Nude Fine Line Nude VDH
Stylus tip radius/µm  r/R 8/18  r/R 8/18  r/R 8/18   r/R 8/18  r/R 8/40 r/R 5/70 
Tracking force range/g 1,5-2,0 1,5-2,0 1,25-1,75 1,25-1,75 1,25-1,75 1,25-1,75
Recommended tracking force/g 1,75 1,75 1,5 1,5 1,5 1,5
Tracking angle (vertical) 20° 20° 20° 20° 20° 20°
Internal impedance, DC resistance/Ohm 750 750 750 800 800 750
Internal inductance / mH 450 450 450 450 450 450
Recommended load resistance/kOhm 47 47 47 47 47 47
Recommended load capacitance/pF 200 - 500 200-500 200-500 200-500 200-500 200-500
Cartridge weight 5 g 5 g 5 g 5 g 5 g 5 g