Sub Rattle

[WVRam06]

Did some new front fire subs under the front seats this weekend. Sounds good. While re-tuning one of my subs under make back seat has a rattle sound, not playing clean. Almost sounds like something is on the sub and rattles, only way to explain it. The other three subs sound great. Any ideas?

[sjv13]

are you sure it's not something around it that's rattling when the bass hits?

[WVRam06]

Nah, box is solid and entire truck dampened......I can touch the sub and change the rattle. Sounds like an old sub with a loose coil cap. 8" Polk Momo

[RicksI30]

Loose dust cap?

[WVRam06]

Hah, Polk Momo.....completely enclosed aluminum cone........driving me nuts......sounds rough...vibrating rattle

[hispls]

Spider coming apart from the frame or possibly breaking at tripple-joint. You must remove sub and play it outside to box to see where the noise is coming from.

[WVRam06]

Thanks, that was pretty much my next move......just seeing if anyone had any ideas