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In the Forum: Horn-Loaded Speakers
In the Thread: Ultimate MF compression driver?
Post Subject: Really? :-)Posted by haralanov on: 3/5/2012
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 Romy the Cat wrote:
since I know that you do not deal with horns and discuss it only as theoretical exercise I am not sure what we are talking about.

Hahaha :-) This experiment was made a few days ago by a friend of mine who is speaker repair person. The modified compression driver is Soviet made 1A-16. If you have the chance to compare the single layer VC vs. the original VC and to hear how much better the lower inductance VC sounds in reality, you will no longer question the inductance importance. But everyone decides for himself... If you think the inductance should not be low - I'm OK with that, because it doesn't change the facts. 

 Romy the Cat wrote:
 haralanov wrote:
…. acoustic filter does not rotate electrical phase of the signal.

I do not think it is correct.

Come ooon, even the monkeys in the jungle know it is correct :-))

Everybody knows that acoustical filters has nothing common with the electrical/digital ones...

 Romy the Cat wrote:
A horn, when it does low-pass filtration due to horn death, introduce the same phase shift as your electrical coil would do.

The horns are not acoustical filters (although they behave like filters), because there is no sound absorbing material to absorb the HF part of the soundwave. They only boost the lower frequency range of their working spectrum, so their upper octave loses amplitude compared to their lower octave. This is called equalisation - not filtration (and it rotates the phase). The filtration is when you get a towel (or a paper cone) and put it in front of a given source of sound. And it does not rotate the phase :-)

Regards, Petar

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