I have 2 lanzar opti1535ds, got them used.
one had a little bit of mechanical noise when I got it, then it kind of sound like the dust cap might be coming loose, flapping with high frequency bass. when I pushed on one side of the dustcap it went away, if I pushed on the other it got louder. It has gotten more frequent and pronounced. I checked and can't find any loose spots in the dustcap, even put a little epoxy where it seemed it was coming from.
now basically seems like the sub is making light fart noise with most high frequency bass. I have the tiem to pull things out next weekend to see what it is, but was looking for thoughts. Trying to figure out if I really need a recone or not.
Aside from this noise the sub hits hard and low. the coils read correctly.
any ideas of what to look for first.
thanks for any advice
2004 nissan altima, 3.5L
275 amp DC power HO Alt, KHC1400 under hood. C&D UPS12-475-FR in back.
JVC Arsenal KD AHD59
AQ2200d (back up Soundstream PCA1500D)
MB Quart DSC4125
RF T1692, RF T1652-S in front, RF T1652 in rear door.
2 AQ SDC2.5-12 in ported box.