Ortofon SPU Mono CG 65 Di MkII Cartridge


Ortofon’s true mono SPU Mono CG 65 Di MkII cartridge.  Differs from the Mono CG 25 Di MkII in having a larger 65 µm (2.5 mil) tip for playing early mono recordings and 78s, but electrically the same.  For anyone wishing to hear what mono recordings really sound like, these SPU monos are the next best thing to the Miyajima Zero Mono cartridges, at somewhat lower cost.  Free UK shipping

Only 1 left in stock (can be backordered)

SKU: ORT-SPU-MONOCG25-2 Categories: , , Tags: , , Brand:
Ortofon SPU Mono CG 65 Di MkII True Mono Cartridge Ortofon's SPU cartridges have long been cherished for their musical prowess, remaining resolutely old-fashioned in terms of weight, low compliance and heavy tracking force.  Have a read about the 60 year history of the SPU on Ortofon's website here.   While there are SPU variants that can be used in tonearms having fixed headshells, most SPU models come with integrated headshells, now fashioned from 'ground wood and resin'.  So, to use an SPU, you pretty much have to use a tonearm with a removable 'SME' type headshell connector, but fortunately most of the tonearms that we like and sell fall into that category.  Furthermore, the new Jelco tonearms have revised geometry which means an SPU will be aligned correctly to Ortofon's recommended geometry (Löfgren B, we think). The Mono CG 65 Di MkII is an SPU-style Moving Coil cartridge with a spherical stylus profile, for the playback of early 65 µm mono and 78 rpm recordings.    This cartridge features a 1.5mV output, which makes it suitable for use with most moving coil preamps and a variety of medium-gain moving coil transformers. Ortofon ST-M25 moving coil transformer is designed exclusively for the SPU Mono CG 25 Di MkII. Technical Data Output voltage at 1000 Hz, 5cm/sec. - 1.5 mV Frequency response - 20-15.000 Hz + 3/- 1 dB Tracking ability at 315Hz at recommended tracking force *)  > 60 µm Compliance, dynamic, lateral - 7 µm/mN Stylus type - Spherical Stylus tip radius - R 65 µm Tracking force range - 4.0-5.0 g (40-50 mN) Tracking force, recommended - 4.5 g (45 mN) Tracking angle - 20° Internal impedance, DC resistance - 6 ohm Recommended load impedance  > 100 ohm Cartridge body material - Ground wood and resin composite Coilwire material - High Purity Copper (OFC) Cartridge colour - Shiny black Cartridge weight - 37 g


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