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In Reply to: RE: Sound stage posted by Norman M on March 22, 2016 at 12:44:15
I purchased a used C-9 last year as an experiment. After 15 years of adding diffusors, 67 tube traps and more, I had incredible imaging in my sound room. I had remembered the C9 effects from my first pair of Maggies.
Surprisingly, I was quite disappointed in the C9. It was an affect that actually seemed to take away the realism that I had worked so hard to achieve. Interesting, but not 'real'. I returned it the next day.
"I see sound waves"
Follow Ups:
It's conceivable that with all your room treatments: "years of adding diffusors, 67 tube traps and more," you rendered your room incapable of revealing any benefit from using a C-9. That must have been, or still is, one ungodly room, requiring/benefiting from all that fussing around. Dealers demonstrate their Maggies to the satisfaction of customers all the time, and such that they buy them (with their listening rooms having little or no treatments, and very often having obstacles plus a lot of extraneous clutter). That doesn't mean to imply that any listening room is unable to benefit from some treatment, or other.
The Sonic Hologram, also known as the Sonic Holocaust was Bob's effort at canceling 'interaural time delay'.
This is when the sound from the LEFT side of the stage reaches the RIGHT ear about 1/2 millisecon d later.
The idea is to subtract the common R from the L and the common L from the R.
Polk had the SDA speakers which did the same thing by locating the presence drivers about 6" apart, which is about the distance between EARS.
Link to discussion of the SDA speaker and why it 'went away'. But still has a following.
Too much is never enough
My C9 "Sonic Holocaust" generator sits within fingertip range and succeeds in 'opening up' the sound of recordings which otherwise would appear 'congested', or whenever I choose to blast away (similarly giving rise to congestion during loud passages). Although the C9 is only a gimmick which produces a sort of sonic 'trickery', so is the idea of an orchestra playing a large Mahler Symphony within the confines of my listening room. (I've owned it since it early days and it never occurred to me to toss it.)
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