Can Speakers be Wired Out of Phase in Series

[ralph-bway]

Maybe a silly question. But I have a couple of 4 ohm woofers and was thinking of mounting them back to back in a push-pull configuration.

I wanted to wire them in series to bring them up to 8 ohms.
Can I wire them + from amp to + on 1st speaker, - on 1st speaker to - on 2nd speaker, + on 2nd speaker to - on amp.

It seems reasonable to me, but I'm also the guy who once tried to DIY a bass shaker transducer from an old 12" radio shack speaker. Got no shake, but damn, I never knew speakers could make so much smoke.

Thanks all.

[Madmike2]

If you are mounting those back to back in the same chamber sealed then you are making Isobarik and they would be wired out of phase to your eye but in phase acousticaly.

[leadbelly]

Originally posted by ralph-bway
But I have a couple of 4 ohm woofers and was thinking of mounting them back to back in a push-pull configuration.

I wanted to wire them in series to bring them up to 8 ohms.
Can I wire them + from amp to + on 1st speaker, - on 1st speaker to - on 2nd speaker, + on 2nd speaker to - on amp.

Yes, that is how you would wire them for series push-pull.

Originally posted by Madmike2
If you are mounting those back to back in the same chamber sealed then you are making Isobarik and they would be wired out of phase to your eye but in phase acousticaly.

Your definition of isobarik is insufficient. I don't belive ralph is discussing isobarik.

[ralph-bway]

Thanks guys.

Your definition of isobarik is insufficient. I don't belive ralph is discussing isobarik.

Your right, not looking to do isobarik, just two woofers sharing a cabinet hynee to hynee.

By the way (ahh, hijacking my own thread) does push-pull work the same for tweeters (front & rear firing), or should they be wired in phase?

[Madmike2]

Originally posted by leadbelly


Your definition of isobarik is insufficient. I don't belive ralph is discussing isobarik.

Sorry read like he was trying to go magnet to magnet isobarik loading.

[BassAwdyO]

If you have one driver facing forward and one facing rearward in the same enclosure then wiring in phase will create a Bipole, and wiring out of phase will create a Dipole. A dipole will really lack in bass unless you have speakers with insane displacement and high Qts from what I've heard. Linkwitz really loves dipoles though and you can read many of their advantages on his site(good reading anyway). I dont really know of any advantage to a Bipole configuration off hand, but if you do a bit of reasearch I doubt it would be hard to find something...

If a dipole is what you are aiming for an open baffle might be the best route.