GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Vitavox S2 with Electromagnets

Post Subject: What is wrong with electromagnetsPosted by be on: 5/30/2009

Cat wrote:
"It has the same ability to super precise to follow the very minute dynamic fluctuation of signal and superb transient but those phenomenal qualities are not connected with anything else, primary it has no correct harmonic backup for the sonic events. The instantaneous feeling of those “absentminded sounds” is very impressive and many people ignorantly fall for it ythe long run or generally correct sound."
"Harmonics, harmonics, harmonics … here is where all music lives. The very first note from the S2 permanent magnet immediately set the things straight. Using adjectives I would characterize is as “rich” vs. “thin”. The S2 permanent magnet has large tone with beautifully-connected notes."

What is this due to? Some unknown property of field coils or something else?

When I look at the two curves of the drivers with the horn on attached, it seems that the alnico version have approximately 1-2dB more output, with a few exemptions, from 4KHz and down, this broadband difference in frequency response could very well make them sound as you describe.
Also the fact that you filled the large cavity in the magnet with copper is I am sure audible, even if it is behind the speech coil.
I think to really get a valid impression, you should make sure the flux is exactly the same with a flux meter and also put in a copper coil into the alnico driver.

Regards
Be

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