AQ HDC3 Noise?

[top chef]

Just bought a new AQ hdc 12" in a 2 cube box @ 37hz and im throwing it about 1100-1200w for the time being. I notice when I turn it up, I can hear like a hollow sound from the sub, almost like some plastic resonating. Kinda worried cause it sounds god awful. Any ideas?

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[SPLaudio 5,000+ posts]

my guess would be set ur crossover @ 80hz and ssf @35hz...

 

[manny1337 10+ year member]

hdc3? how long have you broken the subs in?

 

[amartin_72]

I had the same thing with my 10 on 2400w. Does it have a flimsy dustcap or does it have a dustcap that looks like its coated with resin and is very hard. Mine made that noise and it has a much thinner dustcap than my friends 15" hdc. I found that it goes away if you turn the LPF down, but I would free air it just to see if you can tell any more information. Use test tones too instead of music.

 

[top chef]

The dust cap on mine is flimsy for sure.

 

[top chef]

It tends to do it when there is punchy bass, long drawn out bass is fine.

 

[top chef]

Anyone?

 

[1-MiC 10+ year member]

Just bought a new AQ hdc 12" in a 2 cube box @ 37hz and im throwing it about 1100-1200w for the time being.

Kinda Off Topic, Is The Pretty Good For a HDC12"? I know ive heard they can take alot more, but thats the size amp i was planning to buy. and the size box i would have been happy with, but i can go up to 2.5 cubes

 

[d-REW 10+ year member]

did you mess with the cross over like was mentioned?

 

[top chef]

I turned up my SSF and lowered my low pass a bit but no luck. Maybe it just needs to be broken in more?

 

[nathan32 10+ year member]

i know some1 who reconed there sub and the recone was bad.. bad glue joints and spiders were not glued on right

 

[Toxic Tuan 10+ year member]

Let your sub play at the lowest level that it makes a sound at. Then push down on the dustcap as you're playing it....use caution. It could be the dustcap or bad glue joints. We just have to do an elimination process to figure out the problem. Post a video if you can also.

 

[nathan32 10+ year member]

i know some1 who reconed there sub and the recone was bad.. bad glue joints and spiders were not glued on right

what i mean by this is they were not glued on right on the recone not the sub

 

[hazardous0388 10+ year member]

Let your sub play at the lowest level that it makes a sound at. Then push down on the dustcap as you're playing it....use caution. It could be the dustcap or bad glue joints. We just have to do an elimination process to figure out the problem. Post a video if you can also.

since you've been back you've defiantly been wanting to be helpful to people.

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[amartin_72]

I think maybe some Chinese children didn't put enough layers of fabric in the mold for our dustcaps, or resin. My friends HDC315 has a way better dustcap than my 10 mine pokes in with little effort. Mine makes the noise too with punchy bass over 40hz.