Left speaker crackling a little... What do?

[justafifteen 10+ year member]

Reposting this here as it's not getting much attention in Speakers

I've never clipped my fronts since I've got them (they're Polk db651 coax's), so I don't know why the left one is making a sort of crackling sound whenever it plays like a drum or bass hit. I don't have any of my EQ's on. Low, mid, and high are at 0 on my HU, and my amp doesn't have any adjustments except for a low-pass filter that can be turned on/off but not adjusted.

It's not like a crackling like you hear over the radio, which is just interference; it's the actual speaker making a sound like it's blown. Is there anything I can check on the speaker itself to see if something's bad?

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[l7runner 10+ year member]

check the speaker with a DMM...push on the cone to see if you hear scratching

 

[justafifteen 10+ year member]

Am I checking to see if the coils are close to 4 ohm?

 

[l7runner 10+ year member]

yes...or whatever they are rated at initially.

The might read ok...but there could still be problem with the speaker

 

[justafifteen 10+ year member]

Alright, I'll check them when I can get my hand on a DMM. Do I just set it to AC voltage? Or should there be an Ohm setting on there?

 

[l7runner 10+ year member]

ohm

 

[justafifteen 10+ year member]

Alright. Is there anything else I can check on the speakers besides pushing on the cone? When speakers are blown, what exactly makes the crackling noise? Is it the voice coil rubbing on the motor?

 

[justafifteen 10+ year member]

Well after checking it all and everything, and playing the speaker with it taken out of the door, it seems like it's my door that is making the rattling, which I guess just sounds like crackling. The speaker is making no noise at all when I press on the cone, and I played several songs and I hear no noise coming from the speaker itself so... looks like I've gotta do some work on my door!

 

[l7runner 10+ year member]

it happens...make sure your speaker wires don't have holes or cuts in them, often they can short out on the door frame and make odd sounds