Need some help

[09Alti 10+ year member]

Ok. I hope to explain this well enough where you can understand where my problem is, and I'll apologize in advance for the noob question but I can't figure out what the problem is here short of it being the box itself.

I have 2 Kicker CVR 12 D4's in a shitty pre-fab Kicker ported box. I get decent sound in the 32-47hz range (best around 37-38). The problem I have is that once I get to around 49hz and up it just starts getting quiet. I have a few bass mekanik CDs that have the test tones on them, and I was playing them yesterday to verify what I've been hearing. Around 55hz I almost can't hear anything, it just gets so high that it seems to just drop off.

The current amp is a MA Audio M1900XE, but I noticed the same thing with the Sundown SAZ-1500D hooked up (the Sundown was sent to dB-r to fix a capacitor issue and will be re-installed tonight)

Now - My LPF is set right around 80hz, the SSF is turned all the way down. The gain is at near full and the bass boost is off.

I don't know the dimensions of the box, but I can measure it if it's relevant. When I pulled the subs to wire them to 1Ω I noticed that the box was lined with poly-fill. Would this cause the problem or is it just the box tuning off or do I need to look at other possibilities?

Sorry for the long read, just trying to explain the issue.

Cliffs: 2 Kicker CVR 12 D4s sound good between 33-47hz but very little/no bass above 50hz. Pre-fab Kicker ported box lined with poly-fill

LPF and SSF settings should be ok.

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[09Alti 10+ year member]

ttt. anyone?

 

[09Alti 10+ year member]

No one has any input or is my question just that stupid?

 

[tinmanchris217 10+ year member]

Check your headunit settings. Many have sub LPFs onboard.

If this happens with both amps, it's obviously not an amp issue... though you probably shouldn't be maxing the gain.

If your headunit is squared away, the pre-fab box may have some gnarly cancellation issues with your woofers. If you have a buddy with a system, or an extra sub laying around, swap it in, and see if it still happens. That would help isolate the problem.

 

[lilboom 10+ year member]

it may be bcause it 12 i had a song that didnt hit on my twells my friend has 4 15s and he hits the not noticable harder and now i got 15s and i can hit the note but not hard as him

another thing is im pretty sure you can have some bass boost yes at A CERTIAN POINT IT STARTS TO SOUND LIKE CRAP B BUT THAT WHY ITS ADJUSTABLE IM PRETTY SURE AND HU BASS HAS A IMPACT ALSO ALL TO A CERTAIN POINT

ANOTHER THING THAT MY HELP(IF IT NOT THE 12'S AS STATED THEN YOU NEED A NICE EQUALIZER SOMTHING WUTH ADJUSTAB LE HZ FREQUECIES...IVE BEN LOOKIN FOR ONE MY SELF BUT I LIKE TO ADJUST ON THE GO BUT SOMTHING LIKE THIS http://www.sonicelectronix.com/item_519_Kicker+KQ30.html#

I LIKE THIS STYLE BUT CANT FIND ONE THATS .....BIGGER...

LIKE THE OLD ZAPCO BOARD MY FRIEND WITH THE 4 15S HAS A ZAPCO BOARD AND IT CAN RELLY BRING OUT BASS AND MAKE IT HIT ALOT HARDER

 

[09Alti 10+ year member]

it may be bcause it 12 i had a song that didnt hit on my twells my friend has 4 15s and he hits the not noticable harder and now i got 15s and i can hit the note but not hard as him

another thing is im pretty sure you can have some bass boost yes at A CERTIAN POINT IT STARTS TO SOUND LIKE CRAP B BUT THAT WHY ITS ADJUSTABLE IM PRETTY SURE AND HU BASS HAS A IMPACT ALSO ALL TO A CERTAIN POINT

ANOTHER THING THAT MY HELP(IF IT NOT THE 12'S AS STATED THEN YOU NEED A NICE EQUALIZER SOMTHING WUTH ADJUSTAB LE HZ FREQUECIES...IVE BEN LOOKIN FOR ONE MY SELF BUT I LIKE TO ADJUST ON THE GO BUT SOMTHING LIKE THIS http://www.sonicelectronix.com/item_519_Kicker+KQ30.html#

I LIKE THIS STYLE BUT CANT FIND ONE THATS .....BIGGER...

LIKE THE OLD ZAPCO BOARD MY FRIEND WITH THE 4 15S HAS A ZAPCO BOARD AND IT CAN RELLY BRING OUT BASS AND MAKE IT HIT ALOT HARDER

wat?