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In the Forum: Audio Discussions
In the Thread: Loudspeakers and headphones
Post Subject: With Pavarotti I always want to cover my ears....Posted by Romy the Cat on: 12/2/2005

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 Ronnie wrote:
I wish I could pin-point the frequencies and explain the effect better. I'll do my best.

I want to cover my ears when a Pavarotti sings certain higher notes or some notes when Caballet sings pretty "comfortably".
It's like bad PA horns or horrible acoustic space. I'm thinking of words like "resonances" and "frequency spikes".
My room does not have very bad acoustics. It's comfortable for conversation.

The big horn alone (and unfiltered) sound very well on piano music, but add violins and it feels very sharply cut-off.
Classical organ on the big horn alone is really painful.
Female voices talking is fatiguing, while male voices are better. I don't know if this is normal for the upper bass horn, but adding the MF horn doesn't seem to solve it completely.

Add the MF horn and simple Jazz and rock sounds superb, but classical organ and vocal music clearly shows problems at these frequencies.

Anyhow, what you are saying looks like more related to MF range. Those “yellow drivers” (Fostex, Louzers and etc) have some very strange and very aggressive 4-6kHz regions. Perhaps it was it. Also, how do you roll off the upper bass horn? The Fane 8M drive is freaky and after the roll off it has quite aggressive pick at 5Khz. This pick might be a friend (helping to integrate the channels) and might be a foe (combined with the upper midrange aggressiveness of the Fostex it might be too rough). A regular RTA should show up what is going on in there. If you keep the Fane’s after-roll-off pick at minus 6-8dB then you should be fine. To tune the channels precisely disregard the “sound” low pass cut off at upper bass. Pay attention ONLY at the Fane’s after roll-off-pick. Wherever you feel the Fane and your MF channel sound OK at 5kHZ then it will be the “lucky found” low pass cut off for your upper bass. I really do not know here my upper bass low passed. I know that at 5kHZ the upperbass’ pick arrive at ~minus 7.5dB that subjectively sound very muck OK to me. Number-wise it is shunted .033uF cap at amp input against 33K, or something like this… I do not remembers already… Still, remember there is not correct setting for integration of your horns. You should recognize and embrace the cons and pros of the very specific derivers and enclosures (horns) and dance form there…. I do not think than in your case the room modes do anything with what you are experiencing….

Rgs, Romy the Cat

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