"John Williamson" wrote in message
...
Terry Pinnell wrote:
Could someone remind me of the simple test involving placing 'left'
and 'right' speakers close together facing each other please? Am I
right in recalling that they are in correct 'phase' when the volume
sounds reduced/muffled? Or is it the reverse?

(I have some cable extensions to do on the speakers that came with my
new PC, and both wires are identical, so I want to be sure I get it
right.)

Woolly bass & an ill defined stereo image means they're out of phase,
solid bass & a clearly defined image means they're in phase. If your
amp has a mono switch, use it, & the sound should be stable & seem to
be central between the speakers. If the sound's woolly and/or
diffused, swap the phase on one speaker, & if it sounds better, it's
now right.

They don't need to be close to each other, the test works with them in
their normal position.

If you can get one easily, there are sampler CDs with test tones &
such on them for 15 pounds or less from HMV or other record stores, &
all these have a phase test on them.

--


Maplin do (did) a very good one for about £16 - including a Chieftan
tank firing and a jet flying down a valley. Knockout!


--
Woody

harrogate three at ntlworld dot com