So, i was driving down the road today with the subs playing, not quite at full tilt but pretty loud and all of a sudden a rattle starting coming from the box, and a lack of volume did as well. This is a bandpass so the front of the subs are not visible, but you can see the rear of the subs by looking through the aeroports. The rattle seems to come from the bottom of one of the port walls i can visibly see vibrating. This is not the first time the port has come loose but this is the first time there has been a lack of volume. These are two alpine type r 12"s off of an old school lightening audio 1000d. Signal is not clipped. I do have a 200amp alternator without a big 3, but only have one battery. Could the lack of volume possibly be a voltage drop?

Sounds like something bad happened in there..

You may want to investigate with a full visual inspection.

It could be a wire got pulled from a terminal,

a panel broke loose inside, tear in the cone,or a dead mouse.

(laugh but I've seen the dead mouse thing, long story...LOL)

Any two ways about it, something went way wrong in the enclosure.

Bandpass enclosure are known for abusing subs. (some even shred cones)

I don't think voltage drop would be an issue if it wasn't one before.

Sounds like something bad happened in there..

You may want to investigate with a full visual inspection.

It could be a wire got pulled from a terminal,

a panel broke loose inside, tear in the cone,or a dead mouse.

(laugh but I've seen the dead mouse thing, long story...LOL)

Any two ways about it, something went way wrong in the enclosure.

Bandpass enclosure are known for abusing subs. (some even shred cones)

I don't think voltage drop would be an issue if it wasn't one before.

True Story-

Yep, a dead mouse! LOL

My bud parked his ride in his barn for the winter. (his family farms)

Somehow, someway, a mouse decided to nest inside the enclosure.

I guess the cold or ??? got to it and it died.

It never stank or anything.

It just sounded like wadded up newspaper was in there.

Well the funny thing is after the car sits for a little its just as loud again?

It cant be the amp overheating its sitting out to get plenty of air.

And i want to take the subs out and completely build a whole new box. Crx style.

Ok so i took a closer look today and i figured it all out. I blew the bottom of the left port clean off the screws. Its rattling like hell, also letting most of the air through on the low notes. So time for a new box. I would like to do a crx style.