Interesting Predicament

CaptainPioneer · Post by **CaptainPioneer** » Mon Jul 11, 2005 6:23 am

Ok so I decided to help out the exterior looks on my buddies box and subs so we came to a decision that it would look awesome if we would invert the subs and point them strait up rather than facing towards the front of the truck... Now I did all of this and upgraded the wires on his subs and amp from really shitty to really nice twisted 12g wires for the subs and wired them in Paralells each... Heres the subs: Alpins SWR- 1241D x 2 so its 12" dual 4 ohm so im running each channel at 2 ohms and the amp is rated for 360 ish or something at 2 ohms per channel. So i figure it worked befor and it was loud and should now as well. The box is partitioned and sealed for 1.1 cubes (Personally i think should be a lil bigger) now i was going to use like a gasket to seal up arround the subs so no air leaks would be a problem, but instead i found that this special Duct tape that my friend uses to plug leaks in duct work worked just as nice... nice and tight and no leaks. So i was happy about that. Now i tested it out and made sure that the level was adjusted right and the hu was at a good setting and i thought it sounded great, my buddy says that they were louder the other way. What could have made him think that? Is it possible that I lost db due to the inversion? Or could i merely chalk it up to the fact that the subs are no longer blasting right at him and now upwards? Any comments or suggestions would be great cause i really dont feel like redoing this.

smoker · Post by **smoker** » Mon Jul 11, 2005 6:43 am

phase is correct? for being inverted??

CaptainPioneer · Post by **CaptainPioneer** » Mon Jul 11, 2005 6:45 am

What exactly do you mean by Phase do you mean Polarity?

Justin from Detroit1 · Mon Jul 11, 2005 6:48 am

Yeah you need to switch your postivie and negative wires.

CaptainPioneer · Post by **CaptainPioneer** » Mon Jul 11, 2005 6:52 am

Ok so it IS a Polarity issue, cause i was worried about that. the only reason i didnt do that is because i must have misunderstood the shop pro when he was talkin about boxes and polarity, we were talkin about one inverted and one not inverted and them being in a sealed box that was one chamber so that one had to be reversed and the other at the same so that the woofers fired together. So i guess ill just change th positve and negative up... Do i change the jumper wire on the sub as well or can i leave that as is?

Justin from Detroit1 · Mon Jul 11, 2005 8:19 am

Leave the sub, just change the positive and negative on the amp.

CaptainPioneer · Post by **CaptainPioneer** » Mon Jul 11, 2005 8:51 am

awesome thanks. I dont know what i would do without this forum

Audiophile · Post by **Audiophile** » Fri Jul 15, 2005 11:24 pm

Inverted as in...the woofer magnet is sticking out?

Scarrell · Post by **Scarrell** » Sat Jul 16, 2005 12:13 am

inverting a sub will not increase or dicrease the db range.. but will allow you to have more cf room, anyway... it may just be because they are facing up... if i face my subs up instead of having the facing the rear they sound different.. if you can, have the subs face the rear and see how they sound then..