I think my subs are out of phase, and the bass quality is suffering. I have a bandpass with a single left/right speaker input. The box is being run bridged. Anyway, it sounds like the bass is just crappy, and it wasnt before, so when i opened the seats up to look, i noticed that when the bass hits, the subs go back and forth opposite what the other is doing. They are facing into the cabin, if one is moving forward on a bass hit, the other is moving backwards, and i think they are cancelling each other out. If there is someone out there that can think of a solution, it would be greatly appreciated.

 

switch one of the sub's + and - then it will be in phase.

 

cant, without opening the box. should i do that?

 

well yeah.....if thats the only way u can get to the wires. who ever wired the subs in the box wired it wrong.

 

Yep, re-wire the speakers

 

The bass is crappy now, and it was fine before? And you changed nothing? I doubt it's a wiring issue... probably something either much worse, or painfully simple.

You may have ended up knocking the leads off of one of the subs, or you might have blown one of them. What I believe may be happening is that one sub is pushing the other. Which would sound terrible (unless it were a properly setup PR system... but that's a MUCH different story)

There's no real way to check it out without opening the box, so open it up and see what happened. Maybe you got lucky.

 

While I was playing with my system, I accidentally left 1 sub plugged in to the amp and 1 sub not plugged in. When I watched one of em hit, the other did the opposite just as you said yours do. After a while (5 minutes or so) they started playing together. So either one of the subs got disconnected or one of em blew.

 

you know what i would do? open up the box, take the subs out, and put them in a sealed enclosure. that's just me though.

 

I actually figured it out. When i opened the box and touched the leads of both subs with a 9v battery, only one responded. The other has a blown voice coil. Already in the process of getting a warranty replacement. The reason i thought they were out of phase was because they were firing opposite. Except it was the good sub just pushing air against the bad one, making it appear to fire.

 

i was just rereading this thread, just want to note something for future reference:

if your subs are firing out of phase, and they are wired in parallel (which i would think they would be), then all you gotta do is switch the + and - of any connection. it's probably easiest at the box, or at the amp. there wouldn't be a need to open the box, just switch one connection anywhere and they'll be in phase. but good thing you did open and test it out, to find out that it was a blown voice coil.

 

what does touching a 9v battery to it do?

 

Makes the speaker fire outwards....or if you switch the positive and negatives the speaker will suck in....test to see if the speaker is in good working condition

 

won't harm the speaker?

 

nope

 

i wanna goto best buy or some place and run around with a 9v battery now! lmao, scare the **** outta the ppl there...if they don't know that