8 subs, All moving differently.

[tristan560]

A buddy of mine has 8 Re 8's in a 7 cube box tuned to 35hz. At normal volume the subs seem to all move together but when you crank it a bit they all do their own thing.

Theyre single 4 ohms.

Each pair is wired up to 8ohms, then down to 4 and down to 2ohms at the amp.

Any ideas why they would do this?

[Cr@sh]

Is this visually, or on video? becuase on video alot of cameras cant pick up the subs moving properly, howver if it's visually I would check to make sure there wired in proper phase.

[Cr@sh]

Also in series parralel's that I have done in the past the woofers closest to the amp would see to move out of phase with the others and it may be that they get a little more, also is it a single chamber or all chambered off?

[tristan560]

Definitely visual. Theyre way off but only at higher volumes. all wired to one amp.

[tristan560]

Single chamber.

[creyc]

Have him take the wires off the amp and briefly touch the + and - to a 9v battery. ALL the cones should move either up or down, together. If they do, and it still looks weird, it's just an optical illusion.

[tristan560]

Could the box be too big and theres no cone control at higher spl levels.

[tristan560]

Any other ideas?

[Jville140db]

Have him take the wires off the amp and briefly touch the + and - to a 9v battery. ALL the cones should move either up or down, together. If they do, and it still looks weird, it's just an optical illusion.

x2 just to verify phase after that i got no clue

[devsmazduh]

theyre out of phase ( pos. on neg terminal) or visa versa.

plus, once you fix it. you may be a bit louder! lol