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I'm making some additions to my stereo system and I'll try to explain this
as concise as possible. I have two additional speakers which I'd like to
connect to the receiver in the living room. The room is about 15 X 22 feet.
The existing two speakers are situated against an inside wall facing the
windows. They are properly phased and sound very good. One of these existing
speakers (left side speaker A system), is very slightly caddy corner so that
it projects into the room. I would like to connect the additional left side
counterpart on the opposite window wall so that it's speaker, (proposed
speaker B system) is doing the same thing from the corner it's in. The new
right speaker from proposed system B will essentially facing it's
counterpart from speaker A system,separated by about 15 feet. What I'm
trying to accomplish is more sound filling the room from more directions and
hopefully simulating a sort of pseudo "surround" type of effect. But I'm not
sure about how this is going to work out. Perhaps this is a mistake, so I
thought I'd ask.
If all four speakers are facing one another and are in phase, and by this I
mean before connecting to the receiver confirming that a small battery makes
all four cones move in the same direction, connected like this what happens
when the two lefts for instance are outputting the same signal. With the
cones facing each other, will the projected sound buck and effectively try
to cancel? Or should both cones in proposed B system be in phase as a pair
but out of phase with respect to A system? Or should I forget the whole
thing and just stick with my two existing A speakers? I hope I've explained
this well. Thanks for any advice. Lenny
Back in the early 90's I was Sound Engineer in the Ministry of Sound Club,
London. The main system was 6 stacks of a large PA system, all facing
towards the centre of the oblong dance floor.
One stack in each corner, and a stack half way down both long sides of the
oblong.
I spent a long time trying all combinations of phase, assigning left and
right to various stacks, and soon came to the conclusion that running 6
stacks this way in a large room pretty much produced such a chaotic/random
sound, and that almost nothing I did produced an overall improvement, if you
walked around the room and thus got an "average" assessment of the sound of
the PA & room combined.
It all sounded really good, actually, especially when the club was full and
hot.
If you have a single preferred listening position, e.g. a comfy chair, then
this might not apply so much to your situation, but even if it did, i would
guess that moving your head a few centimetres would drastically alter the
sound you observed, as the results from your 4 speakers are so random and
dependent on listening position.
Here's an old photo - you can see 2 of the corner stacks either side of the
podium, and one centre stack down one side of the long oblong.
http://www.ibiza-spotlight.com/image...und_london.jpg
(Stacks were 2 x 18" Y bins subs, 2 x 15" bass, 2 x 12" flared mids, 1 x
huge horn compression driver, 1 array of bullet tweeters)
It sounded awesome, and any phase cancellations were totally ignored by a
brain if it was pretty much constantly moving through the space covered by
the speakers, as yours might when moving around your home.
Gareth.