A Briefing on Ortofon Moving Coil Cartridges
Nothing demonstrates more convincingly Ortofon´s commitment to be the world´s last cartridge manufacturer than the ongoing development of new state-of-the-art models, and Ortofon will continue to refine upon the level of sound quality attainable from analogue recordings. Since 1948 Ortofon has introduced about 100 different moving coil models, and more are to follow. Contrary to other types of phono catridges, the moving coil principle is not suited for mass production. Each of the four coils contains between 11 an 24 turns of wire, depending on model, and has to be wound by hand under a microscope. The wire itself is much thinner than a human hair. The high degree of craftsmanship involved is one of the "secrets" behind Ortofon's reputation.

Details on the Ortofon Rondo Blue
The Rondo Blue cartridge sound is defined to be more expressive and will distinguish higher from lower pitched instruments- yet well controlled by the influence of wooden material. The Nude FG 70 diamond is here mounted on a cylindrical aluminum cantilever again revealing a very flat frequency response passing 20 kHz including very high tracking ability at recommended tracking force of just 2, 3 gram. We find the sound picture will tend to suit customers liking orchestral music as well as smaller groups of instruments like chamber music smaller choirs and solo instruments. Recommended load- depending on volume or dynamic in music might be around 50 Ohm or even lower.

MC Rondo Blue Technical Data

Output voltage at 1000 Hz, 5cm/sec.: 500 µV

Channel balance at 1 kHz: 1,5 dB

Channel separation at 1 kHz: 25 dB

Channel separation at 15 kHz: 18 dB

Frequency range: 20-35.000 Hz

Frequency response: 20-20.000 Hz ±1,5 dB

FIM distortion at recommended tracking force, DIN 45.542: < 1%

Tracking ability at 315Hz at recommended tracking force: 85 µm

Compliance, dynamic, lateral: 15 µm/mN

Stylus type: Nude FG70, Al. cantilever

Stylus tip radius: r/R 5/70 µm

Equivalent stylus tip mass: 0,30 mg

Tracking force range: 2-2,5 g (20-25 mN)

Tracking force, recommended: 2,3 g (23 mN)

Tracking angle: 20°

Internal impedance, DC resistance: 6 Ohm

Recommended load impedance: 10-200 Ohm

Cartridge body material: Grinded wood/Resin com.

Cartridge color: Blue

Cartridge weight: 10,5 g


Ortofon Rondo Brochure


Ortofon Moving Coil Cartridge Brochure


A La Talk Review of the Ortofon Rondo Blue


Sound Stage Review of the Ortofon Rondo Blue


Large View of the Ortofon Rondo Blue

Details on Ortofon Cartridge and Stylus Installation and Maintenance

A Brief History of Ortofon

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