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Help Diagnosing Problem


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Why the pass doesn't seem to be working correct is bugging me.

Have you ran a sweep/tones to see where your cutting off?

Edit- (anythin at or above 35 is worse??????..)....your not confusing the SSF with the low pass are you??

Nah the subsonic is set pretty high, can't tell exactly but I'd guess 28hz. I've spent hours adjusting the subsonic and LPF by tiny increments trying to find a good combo. I've found a good spot for the subsonic where the lows don't unload the subs but they still move good air. So the subsonic seems to be fine. But the LPF setting any higher than 35 just starts to amplify this sound quality issue it seems. I'm wondering if my HU is maybe sending a dirty signal with mixed frequencies at the same time or something. I have pretty good RCA's xscorpion quad shield.

Have not done a sweep test. But it seems to have good range liek i've listened to it for 20+ hours now, it doesn't seem to miss notes ie filters cutting out the bass. It seems to be picking up extra crap it shouldn't if anything.

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

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oops

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

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Share on other sites

whats the dimensions on the box

http://imageshack.us/g/809/porty.jpg/

Should have the entire design there.

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

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Share on other sites

What dimensions are the box and amount of port area does the port have?

http://imageshack.us/g/809/porty.jpg/

That should be the design plans there^. 42w x 29d x 20h port area I am not sure, does seem like a big port to me though, and that does kind of seem like it may be part of the issue because it seems like the subs arent moving as much air as they should, seems like maybe the box isn't allowing them to produce enough pressure. Sort of like half way to free-airing.

I just can't narrow it down to the box, HU or hopefully not the amp.

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

Link to comment
Share on other sites

Hmm...

toss your ipod or another source, directly to your amps.. (nix the HU) and see?

That's a very good call. I will try that next time I have a sec. Should tell me whether it;s the HU or not. Thanks!

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

Link to comment
Share on other sites

Hmm...

toss your ipod or another source, directly to your amps.. (nix the HU) and see?

That's a very good call. I will try that next time I have a sec. Should tell me whether it;s the HU or not. Thanks!

Word,... :WELCOME:

great luck.... thats bugging me,... LOL......

Please post findings...... cheers yo.....

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Hmm...

toss your ipod or another source, directly to your amps.. (nix the HU) and see?

That's a very good call. I will try that next time I have a sec. Should tell me whether it;s the HU or not. Thanks!

Word,... :WELCOME:

great luck.... thats bugging me,... LOL......

Please post findings...... cheers yo.....

Thanks man going to have to pick up an adapter tomorrow and ill post the results. It's really odd man some songs sound almost perfect (young dro freeze me) but some songs sound like ass, and these are all files that i listened to extensively on my old JL system

Anyways. I'll let ya know what happens.

Cheers

08 Chevy Cobalt LS Coupe, Black

DC Soundlabs 3.5K
2x DC Level 4m2 15's @ 1 ohm
31hz designed by chevysub4x4spl

1x XS Power D3400

Stock Alt (mechman soon)

60ft 1/0 Copper Welding Cable

Alt, Batt, and Amp Power & All Grounds are 1/0 Copper

50 sq ft B-Quiet Ultimate & Cans of Spray Foam

JVC KD-A625

Link to comment
Share on other sites

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