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AQ HDC3 18 halp


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My HDC3 18 is making a noise that I can't quite describe, but I will do my best. It sounds almost like it's clipping, like a hollow type coily noise...it happens even at low volumes and I'm 100% nothing is clipping because my voltage is good, and tested the HU and amp with an o-scope.. Monday I will get around to checking the coils and seeing what they read, but is it possible that since my cut out is a hair too small that it could be stressing the basket or something and causing the sub to not excurt perfectly? Because I just had the sub inverted and I didn't hear the noise....Maybe Nikitaaa can get in here and help me describe the noise since he heard it today.

Edited by Will Summers

E34 540iT/6

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Mine does that when I open the back hatch and the port has nothing to load up on.

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It's like a really odd mechanic grinding sound. His gains and ssf and everything is good. I just don't know why it could be..

2007 M/T Honda Civic Coupe EX

(4) Sundown Audio X-8's

(2) Ampere Audio 3800.1's

(3) Stinger SPV-44 Batteries

(1) Mechman 240

3:1 Ratio 4th order sealed from the trunk

TEAM NWSPL

Best termlab scores to date in Honda trunk:
151.7db legal (official) IASCA trunk 3 class

Best termlab scores to date in my walled Subie:
152.9db legal (unofficial) IASCA advanced 2 class
155db outlaw

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Mine does that when I open the back hatch and the port has nothing to load up on.

Interesting. Should I move my box closer to the hatch? It's nearly a foot away..

I would shoot for 6-8 inches or the width of the port.

Edited by Nikitaaa

2007 M/T Honda Civic Coupe EX

(4) Sundown Audio X-8's

(2) Ampere Audio 3800.1's

(3) Stinger SPV-44 Batteries

(1) Mechman 240

3:1 Ratio 4th order sealed from the trunk

TEAM NWSPL

Best termlab scores to date in Honda trunk:
151.7db legal (official) IASCA trunk 3 class

Best termlab scores to date in my walled Subie:
152.9db legal (unofficial) IASCA advanced 2 class
155db outlaw

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my buddy had an hdc3 12 and the coil let go on one wrap and it made a tingy coil soind but played fine

2002 ford focus hatch

pioneer DEH-P8400bh

infinity kappa 6.5 components front and rear

XS Power D1200

Shuriken BT-100

audioque 120.4

2 15 inch audioque HDC3 D2

2 audioque 2200d

big 3

mechman 220a alt with external regulator

479-418-3056

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Mine does that when I open the back hatch and the port has nothing to load up on.

Interesting. Should I move my box closer to the hatch? It's nearly a foot away..

I would shoot for 6-8 inches or the width of the port.

Aight I'll move it closer in the morning and see what happens. If it fixes it I will be super happy.

E34 540iT/6

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Mine does that when I open the back hatch and the port has nothing to load up on.

Interesting. Should I move my box closer to the hatch? It's nearly a foot away..

I would shoot for 6-8 inches or the width of the port.

Aight I'll move it closer in the morning and see what happens. If it fixes it I will be super happy.

I honestly doubt moving it 3inches back is going to take that weird sound away.

The sounds is like roof flex, only coming from the sub..

I just find it hard to belive that you messed up that sub from only 1200 watts not including box rise ect.. Take a volt meter to the coils. That would be the first thing I would do.

Edited by Nikitaaa

2007 M/T Honda Civic Coupe EX

(4) Sundown Audio X-8's

(2) Ampere Audio 3800.1's

(3) Stinger SPV-44 Batteries

(1) Mechman 240

3:1 Ratio 4th order sealed from the trunk

TEAM NWSPL

Best termlab scores to date in Honda trunk:
151.7db legal (official) IASCA trunk 3 class

Best termlab scores to date in my walled Subie:
152.9db legal (unofficial) IASCA advanced 2 class
155db outlaw

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are you playing below tunning?

2002 ford focus hatch

pioneer DEH-P8400bh

infinity kappa 6.5 components front and rear

XS Power D1200

Shuriken BT-100

audioque 120.4

2 15 inch audioque HDC3 D2

2 audioque 2200d

big 3

mechman 220a alt with external regulator

479-418-3056

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