Dahlquist DQ-10 Midrange Replacement

[AudioAntique]

Greetings,

No, I haven't got another bright idea! However, a user is apparently very happy with the HiVi DMN-A Soft Dome Fabric Midrange as a replacement for the DQ-10, for those of you who may have that need. Hmmm, sounds tempting. Read his review at:
http://www.parts-express.com/pe/showdetl.c...tnumber=297-415.

Sayonara.

This post has been edited by AudioAntique on March 21, 2009 11:33 am

[clint e.]

It's no surprize, since Neodymium is a very powerful magnetic material.
Tanx for sharing. Domo Arigato

A quote from Wiki:

"Modern driver magnets are almost always permanent and made of ceramic, ferrite, Alnico, or, more recently, neodymium magnet. A current trend in design, due to increases in transportation costs and a desire for smaller, lighter devices (as in many home theater multi-speaker installations), is the use of neodymium magnet instead of ferrite types. Very few manufacturers use electrically powered field coils as was common in the earliest designs. The size and type of magnet and details of the magnetic circuit differ, depending on design goals. For instance, the shape of the pole piece affects the magnetic interaction between the voice coil and the magnetic field, and is sometimes used to modify a driver's behavior. A "shorting ring" or Faraday loop may be included as a thin copper cap fitted over the pole tip, or as a heavy ring situated within the magnet-pole cavity. The benefits of this are reduced impedance at high frequencies providing extended treble output, reduced harmonic distortion, and a reduction in the inductance modulation that typically accompany large voice coil excursions. On the other hand, the copper cap requires a wider voice coil gap, with increased magnetic reluctance, reducing available flux, requiring a slightly larger magnet for equivalent performance."