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Low Bass sounds awful, how to hold sub box down


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Hey everybody, I've got a quick question. I've got 2 re sxx 12's running off 2 arc ks 1000.1's and the low bass sounds pretty terrible. I know the amp settings aren't the problems. the gain is MAYBE 1/8th of the way up. The bass boost is all the way off and crossover frequency is set to 80 hz. I am having a hard time finding the problem here. The box is right at 4 cu ft. and tuned to 30 hz. The setup is in the hatch of my 350z. Also when the bass hits, the box comes completely off the floor. I think this may be half the problem. Also, any ideas how to hold my box down without drilling holes in the floor? there is no carpet so velcro won't work, thanks!

Audio Build

Ride: 2002 Chevy Blazer 4 door

Head Unit: Pioneer deh-80prs

Subs: 4 DC Level 3 15's in a 4th order wall designed by Trent Choate and Jeff Smith

Subs Amp: AQ 3500.1 at wired at .5 (soon to be 2)

Mids/Highs Amp: Skar 85.4

Mids/Highs: Skar components

Electrical: Mechman 270 amp alt, 2 runs of Knu 0 gauge, XS Power d3400, 2 Deka Group 9a31

Build log : http://www.stevemeadedesigns.com/board/topic/167658-indianabasshead-blazer-dc-audio-4th-order-wall-build/


Perfomance Build

2003 Nissan 350z

Greddy Twin Turbo, 3" Test pipes with Borla high-flow cats, Crawford Performance Plenum, Greddy E-manage Ultimate ECU

Exedy Racing Clutch, Built Motor by Racing Innovations

Greddy Over-fender aero kit (1 of 20 ever made), 19" Racing Hart r5 pro wheels
466rwhp


Bike

2008 Midnight Blue Kawasaki ZX-14

Stretched 8" and lowered, Brocks Sidewinder exhaust, Power Commander 5

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large sheet of mdf under the box, screw box to sheet of mdf.

this is called a "false floor"

you could also not have enough port.

i dont know anything about arc audio.

wheres your subsonic set at?

09 Civic EX

KDC-X395

(2) SKAR Audio VVX-12

Skar Audio SK-1500.1

4 cu ft @32 (new box and more port soon)

Firing Forward not sealed off

Stock 80 Amp Alt

Big 3 In 1/0 Knu

2 Runs To The Back 1 Pos 1 Neg In 1/0 Knu

DD-1'd 13.8v drop

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thanks a lot everybody! Only problem with putting down false floor is I can't get the box out of my car.. It was built inside. But I will just use L brackets and bolt them into the floor of the car. And the subsonic is set to 25 hz.

Audio Build

Ride: 2002 Chevy Blazer 4 door

Head Unit: Pioneer deh-80prs

Subs: 4 DC Level 3 15's in a 4th order wall designed by Trent Choate and Jeff Smith

Subs Amp: AQ 3500.1 at wired at .5 (soon to be 2)

Mids/Highs Amp: Skar 85.4

Mids/Highs: Skar components

Electrical: Mechman 270 amp alt, 2 runs of Knu 0 gauge, XS Power d3400, 2 Deka Group 9a31

Build log : http://www.stevemeadedesigns.com/board/topic/167658-indianabasshead-blazer-dc-audio-4th-order-wall-build/


Perfomance Build

2003 Nissan 350z

Greddy Twin Turbo, 3" Test pipes with Borla high-flow cats, Crawford Performance Plenum, Greddy E-manage Ultimate ECU

Exedy Racing Clutch, Built Motor by Racing Innovations

Greddy Over-fender aero kit (1 of 20 ever made), 19" Racing Hart r5 pro wheels
466rwhp


Bike

2008 Midnight Blue Kawasaki ZX-14

Stretched 8" and lowered, Brocks Sidewinder exhaust, Power Commander 5

Link to comment
Share on other sites

I mean it sounds that easy but its really not. I cant really lift the box up more than an inch or two. It's built against the strut bar in the back of the car. I'm not sure if you're familiar with 350z's or not. I will definitely give that a try though.

Audio Build

Ride: 2002 Chevy Blazer 4 door

Head Unit: Pioneer deh-80prs

Subs: 4 DC Level 3 15's in a 4th order wall designed by Trent Choate and Jeff Smith

Subs Amp: AQ 3500.1 at wired at .5 (soon to be 2)

Mids/Highs Amp: Skar 85.4

Mids/Highs: Skar components

Electrical: Mechman 270 amp alt, 2 runs of Knu 0 gauge, XS Power d3400, 2 Deka Group 9a31

Build log : http://www.stevemeadedesigns.com/board/topic/167658-indianabasshead-blazer-dc-audio-4th-order-wall-build/


Perfomance Build

2003 Nissan 350z

Greddy Twin Turbo, 3" Test pipes with Borla high-flow cats, Crawford Performance Plenum, Greddy E-manage Ultimate ECU

Exedy Racing Clutch, Built Motor by Racing Innovations

Greddy Over-fender aero kit (1 of 20 ever made), 19" Racing Hart r5 pro wheels
466rwhp


Bike

2008 Midnight Blue Kawasaki ZX-14

Stretched 8" and lowered, Brocks Sidewinder exhaust, Power Commander 5

Link to comment
Share on other sites

im not familiar with a 350z.

you could try 1/2" mdf instead of 3/4" though.

just trying to give you ways not to destroy your car lol

09 Civic EX

KDC-X395

(2) SKAR Audio VVX-12

Skar Audio SK-1500.1

4 cu ft @32 (new box and more port soon)

Firing Forward not sealed off

Stock 80 Amp Alt

Big 3 In 1/0 Knu

2 Runs To The Back 1 Pos 1 Neg In 1/0 Knu

DD-1'd 13.8v drop

Link to comment
Share on other sites

your box jumping up is one problem. it hitting the lows is another problem whether it be the box or maybe loading issues off back of car it theres no breathing roomb, etc. it could be many things. l bracks will hold your box down. then give an update. i dont see how your box moving will effect the sound too much. i see it taking away from SPL but it should still produce lowend if designed right

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