Build a box from MDF not partial board and then get your sub replaced with a nice Alphasonik!

 

lol -- one could almost argue that the Alpha subs and the Audiobahns are close cousins anyway...


i would be inclined to think your conclusion may be right. have you checked the resistance from + of one VC to the - of the other VC? i'd be willing to bet you are shorting in there somehow.

either that, or double check and make sure you don't have a short somehow between voice coils when you are wiring it up.

 

I'll dbl check, but I was pretty meticulous and rewired repeatedly to make sure it wasn't something I did wrong.

 

Coming from a guy that can't spell "particle board", I don't know if I can take those suggestions to heart!

lol

Everyone's a critic.

 

Actually I that's exactly what I wanted to type, because that's what your using... Partial board, big wood chip board, or Particle board...same difference might as well use 1" thick cardboard. That type of wood is not conducive for box making.

Not trying to sound like a jerk. Just giving you the facts. Just because speaker boxes from Sears are made from it doesn't mean you should. Your sub will sound better if you make your box from MDF. As its name dictates ("Medium Density Fiberboard") not a bunch of big wood chips pressed and glued together.

Just trying to help

 

Next time you have a chance, press your lips up against a chunk of "partial-board" and tell us how much air you can push through it.

This is a temporary design that is to help me get a feel for what I am trying to do. Once I have completed the initial install, then I plan to revamp EVERYTHING. At whick point I will be designing a fiberglass enclosure that will encompass the entire tool well.

I'm by no means offended by your comments, but keep in mind that each person here is doing their own thing. Me included. I considered paying more for MDF, and chose the pressed-wood because it would cost less and would soon be removed anyway.

As for the alphasonics, what makes you choose them over the Audiobahn equipment?

 

The problem with particle board is that it is porous. This may not be a huge issue on some of the mass produced ported boxes with lower end subs installed, however, it shoud not be used with sealed enclosure that you are putting higher power to. The other issue is dampening and reverberation - MDF helps absorb some of the unwanted noise, not allowing it to be passed to the outside of the enclosure.

You could correct the porousity issue by sealing the inside of the box by coating the internal surfaces with epoxy or some other type of sealant. The inegrity of the wood may still be an issue after a number of hours of that sub pounding and the internal pressure changing.

MDF is much more dense and is significantly stronger.

 

You're absolutely right. Again, I WOULD use MDF if I planned to keep the box, but in order to gain all the airspace I'm going to need, the only feasible solution is going to have to be fiberglass. I'm going to be teaching myself how to do it, so it's going to be a long project and I wanted to get something in there that would be cost effective and still tolerable. That's the reason for the cheapy pressed wood for the time being.

All in good time!

Thanks again for all of your suggestions. I'm going to re-test the sub with the multi-meter and post the results on here before the end of the day.

 

Probes together reads 00.2 @ the 200 ohm setting on the meter.

The sub in series reads appx 6 ohms.

 

Must be something wrong on the sub or you are shorting it when you wire it - you read 0.2 with just the probes, same thing you are reading when you go parallel.