Who says a "moving coil" is the best?
Compare the new choice: Moving Flux MF
Until now, buying a phono cartridge has been a difficult decision. You could choose the superb sound--and high price tag--of a moving coil cartridge. Or you could elect the economy and adequate hi-fi performance of a moving magnet cartridge or other magnetic cartridge type. Astatic has made the decision easier.
The Moving Flux MF cartridge.
It's a state of the art breakthrough--a newly patented' principal in phono cartridge design. The moving flux transducer combines the superb performance of moving coil designs with the economy of moving magnet cartridges.
It's a whole new choice that eliminates compromise.
Like a moving coil...
Astatic moving flux cartridges convert stylus mechanical motion directly into electrical energy. Musical detail is more clearly reproduced than with moving magnet designs. That's because moving magnet cartridges and all other magnetic types have a built-in source of phase distortion--the iron pole pieces that transfer magnetic energy from the stylus to the output coils as output voltage. This phase distortion results from magnetostriction (magnetic time delay).
Dr. Heinrich George Barkhausen discovered magnetostriction over 80 years ago. He found that iron, because of variations in size, shape, and alignment of its molecules, becomes magnetized in discrete steps rather than in a smooth linear manner.
In the pole pieces of any magnetic cartridge this nonlinearity translates into musical sound that is reproduced with distortion and less than full fidelity.
Moving flux cartridges, like the moving coil, eliminate magnetostriction by eliminating pole pieces. The results are audible. Sound comes through clear and undistorted, transparent and "clean"--characteristic of outstanding moving coil sound. Stereo imaging is solid and sure. Like a moving magnet...
Astatic moving flux cartridges offer three features that make them economical.
First, their high output means you don't need an expensive transformer or pre preamp to enjoy the superb sound. Their low inductance and load impedance permits proper matching to any magnetic input terminal. Second, you can replace the stylus yourself--rebuilding when it becomes worn.
Finally, Astatic's line of four Moving Flux cartridges are all priced competitively with moving magnet cartridges--well below the high range of moving coil units.
Who is Astatic? The largest manufacturer of tonearms, cartridges, and styli in the USA. Astatic has been innovating and contributing to the art of cartridge design since 1930.
These years of research and development have paid off in a new, no-compromise choice for the cartridge buyer.
At last, a cartridge that combines the best features of moving coil and moving magnet--without the drawbacks of either. Come hear and compare for yourself at selected hi-fi dealers throughout the country.
There are four models available priced for all audio budgets. Also, precision pre-mounted models in head shells.
Write for free brochure, for full technical specifications of the complete line.
The New Patented Astatic Moving Flux (MF) magnetic cartridges.
U.S. Patents 4,072,823 and 4,123,067
The Astatic Corporation Conneaut, Ohio 44030, USA.
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Also see:
Astatic MF-100 Moving Flux Phono Cartridge (Dec. 1980)
Adcom Crosscoil (ad, Feb. 1980)