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Ortofon OMP20 Pmount Phono Cartridge | N.O.S.
OMP10 Pictured for Reference Only

Ortofon OMP20 Pmount Phono Cartridge | N.O.S.

Our ID#:OMP20
Brand:Ortofon
Plug-Mount Cartridge

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Option(s)
Ortofon OMT (T4P) + Stylus 20 [+$-15.00]
$260.00
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ORTOFON OMP 20 T4P P-mount Phono Cartridge


The OMP 20 is a Pmount magnetic cartridge (MM) with an NUDE (natural diamond) elliptical shaped stylus that is a great foray into the world of HiFi, based off of the proven and time-tested OM series. The OMP 20 is designed for use with P-Mount (T4P) type tonearms as generally found on linear tracking type turntables.

NOTES:
  • Ortofon has discontinued their Pmount line. They no longer support T4P.
  • Current supply (2018) is a N.O.S. buyout. Some of the genuine packaging is "shop worn" meaning it's been bouncing around drawers for decades.
  • Your new old stock cartridge may arrive in a worn Ortofon box. Some will ship repackaged in our own protective box.
  • We are installing a brand new current production Genuine Ortofon Stylus 20. You will not receive a N.O.S. stylus.
  • All will be professionally inspected both visually and electrically under the watchful eye of our senior electronics technician.
  • Supply extremely limited then 'gone forever'.

OPTIONS:
OMT = about 690 ohms
OMP = about 700 ohms
No further info could be found as of press time about why Ortofon labeled some of their T4P OM Pmount series cartridges OMT instead of OMP. The bodies are physically exactly the same. It may have been a private label offering.


TECHNICAL DATA

OMP 20 OMP20

Output voltage at 1000 Hz,
5cm/sec.

4 mV

Channel balance at 1 kHz

2 dB

Channel separation at 1 kHz

22 dB

Channel separation at 15 kHz

15 dB

Frequency range at - 3dB

20-25.000 Hz

Frequency response

20-20.000 Hz ± 2 dB

FIM distortion at recommended
tracking force, DIN 45.542

< 1%

Tracking ability at 315Hz at
recommended tracking force

65 µm

Compliance, dynamic, lateral

25 µm/mN

Stylus type

Nude Elliptical

Stylus tip radius

r/R 8/18 µm

Equivalent stylus tip mass

0,5 mg

Tracking force range

1,25-1,75 g (12,5-17,5 mN)

Tracking force, recommended

1,25 g (12,5 mN)

Tracking angle

20°

Internal impedance, DC resistance

700 Ohm

Internal inductance

450 mH

Recommended load resistance

47 kOhm

Recommended load capacitance

200-600 pF

Cartridge colour, body/stylus

Black/Black

Cartridge weight

6 g

Replacement stylus unit

Stylus 20

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