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In the Forum: Audio Discussions
In the Thread: Crossover Design
Post Subject: Re: EdgarHorns and the ordinary pile of audio Morons.Posted by drdna on: 12/10/2005

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 Romy the Cat wrote:

Considering the problem you described, it was pretty much, where I expected it to be. However your explanations are kind of sound strange to me. If your tweeter were out of phase with the rest of the drivers then it would not produce the problem you portrayed. 


Yes, you are correct.  I meant to write the midrange was out of phase.

 Romy the Cat wrote:
 
Also, “listening to each of driver individually” you would not be able to get the drivers’ polarity (not to mention that the “absolute phase” has nothing to do with your case at all.


Yes, I meant listening to each pair of tweeters, midranges, woofers individually.

 Romy the Cat wrote:
 
The co-phaseinass of the drivers might be objectively detected by a $100 worth phase tested that I literally demand to buy any person who is wiling to talk with me about horns. An alternative way would be a run a dual-channels mono in-phase sweep and to monitor the center image….


Yes, this is what I did actually.

 Romy the Cat wrote:
 
You should stop to extend any credit to audio audiophile and treat all of them by default as a potential cretin unless they prove you otherwise. This is what I call the Presumption of Moronity ™


For which I am ever grateful, as it has allowed me to pick up this speaker for a bargain price.

 Romy the Cat wrote:
 
This is very different subject and I would requite you to describe it deeper to figure out what frustrate you now.


I have found the next obvious glaring problem, which is contributing to the muddy sound I described earlier.  There is a mismatch between the two channels.  The right channel is very slightly softer than the left with a very slight change in the sound like it is vaguely from an old-fashioned radio, but very subtle.  I tested this by listening with a mono signal to each channel one at a time.  I can tell this from anywhere I stand, far away or with my ear right next to the speakers (so I do not think this is a room acoustics effect).

I found that the same signal from the same RCA output on the preamplifier through the same wire would make this different sound going to the right amplifier and speaker than going to the left amplifier and speaker.

So I switched the amplifiers and there was no difference.
Then I switched the speaker cable and there was no difference.
Then I switched the speakers and there was still no difference.

Then I became very confused and decided to see if you have any sugestions?

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