Speakers in Phase

Kojack Joined: Jul 29, 2006 Posts: 110 Menomonie, Wisconsin USA	Posted on Nov 12 2006 06:53 AM DannySnyder I'm very aware of the phasing issue. The trick I heard was to hold the speaker wires up to a 9volt battery and see which way the cone moves. All speakers should move the same direction. I didn't want to hijack Danny's thread, so am posting this seperately. In spite of playing electric guitar forever, this is the first I've heard of amp speakers being in or out of phase with each other. Getting new insights is one of the things I like about this place. Can somebody give me a quck run down on how to run this test (which wire get +positive, which gets -negative? Does it matter?). And then what changes do I make to the wiring to get the speakers in phase? Thanks in advance! Chuck Top
WR Joined: Feb 27, 2006 Posts: 3832 netherlands	Posted on Nov 12 2006 07:45 AM it doesn't matter. it works like this: if the speaker gets + on +terminal and - on -terminal, it moves outwards, and if it gets + on -terminal and - on +terminal, it moves inwards by alternating +on+ and +on-, the amp makes the speaker move back and forth. (or the other way around, doesn't matter) all that happens if you switch the leads on +and- terminals, is that the speaker starts moving in the opposite directions, but the sound stays the same. what is important however is that all speakers move in the same direction at the same time, or else they will (partly) cancel out eachother's soundwaves. afaik, all speakers have this standardizedamong eachothers, (+ on = is outwards if I remebr correctly), except for JBL and (I think) Altec speakers which have it the other way around. I would think that with two amps, you'll get set up issues as well, depending on how far apart they are. special problems arise when you mic 'em both and get a diy soundguy who isn't aware of phase issues. nothing that can't be overcome. Ive always been told that 9v is toomuch for the speaker test. never needed the test though, Ive needed it once and was able to hear the difference and which was right. WR — Rules to live by #314: "When in Italy, if the menu says something's grilled, don't assume it is." https://www.facebook.com/The-Malbehavers-286429584796173/ Top
Kojack Joined: Jul 29, 2006 Posts: 110 Menomonie, Wisconsin USA	Posted on Nov 12 2006 08:42 AM Thanks, WR! I appreciate the information. Top

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Speakers in Phase