Room correction with PC (Off Topic)

by GC, Sunday, September 02, 2007, 20:08 (6081 days ago) @ unknown

Hi GC

Hi Chris>

Interesting what you write...a blessing for you, a head ache for
me.

Yes this often happens in Hi Fi. For years I stressed out over the
'Lowther shout', but its gone now forever.

Sure it is...:wink: It is true that the Tact processor can flatten that shouter, even supress what it so happily does. He he...>

employeed by now passed away Snell himself.

I used to love the early Snell speakers. Like Bert, that man could squeeze
magic out of a simple box.

Yeah, you kow what the magic was? A resonating box, a 24 db x-over and all Qts = 1 drivers. Bingo then you have a Snell A 2 or 3.>

If a room want's to add something or it wants to phase out something.
It is the room that does it, no matter what speaker is filling it with
sound.
Hey...OK, let's steal some energy from a DSP controller and an amp to fill
in dips and gaps, and the room disappears...?

No it does'nt. IMO.

The room is still there, but your speakers are told to act as a phase
shifter 22 million times per second.

A room is a natural thing to perceive. It is actually not disturbing our
brain at all. We compensate for its excistance and what our ears really
perceive is the speaker itself.

Before I had the Tact in my system I also thought this way. I try
not to fill gaps and dips but to be gentle with correction and always to
bring bumps back into line rather than raise dips.

Yes Chris that might be very clever what you do there. Everytime Peter demo'ed the ******* to me he always forced at flat DC-light frequency curve and a zerro phase. That is really a lot of processing.

Who add's most to the sound. The speaker and what's driving them. Yes.
And no if your speakers are unable to control the room decently. A ratio
not to be forgotten.

I'm not sure I go along with speakers controlling the room, they can
control themselves but not the room.:wacko:

If they control them selves, the room caNot control them. This is what I mean.

Where am I heading? Well, the room itself has to be adressed as first
priority.

Agreed.

All I would add is that with my system - rear loaded horns, base reflex
BD15 subs and Fostex supertweeters - the Tact does an excellent job.
Before this, I spent ages integrating the subs, behind the horns. They are
now pushed back into the corners and the Tact takes care of the time
alignment.

I beleive in all time alignment apperateur. Common for them all, they do it.
You can do it mechanically..yes but you might not like the design then? You can do it in a passive filter x.over. Complicated, but possible up to 1/2 a wave length.
And the Tact also address it it's own way. It take a look at the spekaers total phase as you're ears perceive it where you place them when listening. And then it manipulate with the timing of all freqencies. Maybe it is this way of acheiving it that makes me crazy.
Chris I am sure that the devil do a lot of good things your place, otherwise I beleive you would have thrown it out already.
An mind you, I only heard it harrasing with the speaker connected. Were never allowed to play with the settings my self. That might have change my opinion a lot.

GC

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