Blown Subs

Actually the excursion of the driver has nothing to do with the enclosure size.  It is the physical parameters designed into the driver that determine's the best enclosure to use.  An example, one of our drivers has a lot more throw than the Eclipse sub, but is designed for a much smaller enclosure.

You are correct on that last part though.  A larger enclosure will increase your low frequency response.

Steven Kephart

Adire Audio

Ok here is what I have.  Eclipse 8454 HU, Memphis Mclass 6.5 comp set in front, Mclass 6x9 in rear fill. Memphis Belle MC1300D amp.  I have Kappas running at 2ohms 600wrms and no noise in the 6.5 comp set.  When I hook up the Eclipse at 1100wrms 1ohm I get engine whine in the 6.5s.  I removed a lot by shortening my ground cable.  The engine is just barely audible and only if you get up on the 6.5 tweeter with your hear.  Ok now for the strange thing.  My amp is mounted to the back of the seat.  When I pull the seat down all engine noise goes away.  When it is back up with the shortened ground I get a slight amount but only really at no volume or slight volume.  When I really start to hear the music at low volume it is not audible.  I will try tomorrow changing them to 4ohm load as someone mentioned. Is there a way to make DVC4ohms sub go to 2ohms?

If the amp is mounted to the metal of the seat, this also acts as a ground. Dismount the amplifier to see if the sound goes away. If it does the amp will have to be mounted to a peice of upholstered wood and care must be taken with the mount so that the screws that mount the wood to the seat do not make contact with the bottom of the amp, next the mounting screws for the amp cannot go through the wood and make contact with the metal of the seat. This is called a ground loop and is the start to the path for noise.

There is no way to make 2 dvc 4 ohm subs go to 2 ohms, they will be either 1 ohm in an all parallel circuit, 4 ohms in a series / parallel circuit or 16 ohms in an all series circuit. My bet is that they should perform fine in the 4 ohm setting for you.

Well this seems like a big pain when I had a perfect sytem IMO to begin with.  I will try a few of the suggestions tomrrow in the meantime They are now on Ebay

http:///.com/dll?ViewItem&item=5706816373&sspagename=STRK%3AMESE%3AIT&rd=1

I just paid $650.  I know I won't get that much.  I don't know what to try to sell them for, thats why they are on ebay.

2 brand new subs and a box which weights almost 75lbs.  I have all paperwork and boxes.  You can make me an offer I ca not refuse.

Ahhhhh, no don't sell them, you will lose more than it would cost to solve the problem. Remember the problem was already there to begin with so just by reverting back to what was there before does not solve the problem, it will rear it's ugly  head again one day. Take the time and solve the problem, a good system with good equipment is only as good as it's install.