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 i wanna know how can i make my back seat fold down

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2toneRivi
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PostSubject: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 3:48 pm

is this possible.. i know i saw someone hear said that they did this... i want a hole betweeen my back seat and my trunk to that the air that my subs make can have a passage to come out thru the back seat.. any ideas.. pls help
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Mr.Riviera
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 3:59 pm

AA cut away the area behind the center arm reat in the back seat, and mounted his sub there. if you want, you could completly remove the rear seat pretty easily, but i dont think you can make it fold up and down or lock. there are only a few bolt holding it up and then there is the trunk lining and a X bar for support.

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1996 with 244k miles, L324" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs.
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AA
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 4:02 pm


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'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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2toneRivi
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 4:07 pm

damn i had not seen that pic.. that looks cool.. ima try doing that this weekend... thanks Mr.Riviera and AA
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AA
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 4:16 pm

If you're looking for SPL, your sub might not be as loud in this orientation, so test it first. The transfer function of our car creates cancellation of some lower frequencies in forward-firing application. Sound quality is good, though.

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'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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2toneRivi
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 4:50 pm

^^^^ what does that mean... i have 2 kicker 15 l7 in a sealed box
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AA
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 4:58 pm

What it means is, if you have your box firing into the rear of the trunk, you are enjoying the transfer function of the car. The front seat is the sweet spot because pressure waves reflect off the trunk, building SPL up front. If you turn the box so it fires towards the cabin, the waves bounce off the dash and back into the trunk, so sound pressure builds there instead.

The quality of the bass is great with subs firing forward, but they're just not as loud. I'm happy with a single 8" and 200 watts. With two 15s, you probably would be fine, might have to turn up the bass gain a little to see your usual sound level. Not wise to fire subs forward if you're competing in SPL contests, unless you seal off the trunk completely = very hard to do.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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2toneRivi
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 5:04 pm

damn.... no wonder ur the administrator of this forum..lol.. thanks alot....
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97rivman
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 5:04 pm

AA wrote:
unless you seal off the trunk completely = very hard to do.

Oh yeah! theres a bunch of vallies above the rear wheels, and behind the head rest is swiss cheese masonite. You could unlatch the back seat and use some straps to drop it and prop it up. but its not a very pretty back seat. and it will do a better job of insulating the sound. Ill take some pics a completely bare backseat and trunk(except for the fuel cell.) so you know what your working with


Last edited by on Fri Jun 29, 2007 5:06 pm; edited 2 times in total
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jax95riv
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 5:04 pm

Aaron, did you ever take pics of your trunk so we can see how your box is set up? If not, would you please.
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2toneRivi
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 5:10 pm

yeah can u please
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99Rivman
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 6:56 pm

The back of the seat is held in with two bolts at the bottom, that also hold the seat belts, and then it hooks at the top, the seat bottom has to come out before you can remove the back. I don't think there would be any way to hinge it unless you modified the bottom also?
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steel2040
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PostSubject: Re: i wanna know how can i make my back seat fold down   Fri Jun 29, 2007 8:06 pm

i modifided my back seat where it meets the seat belt bolts to sit above it that way the back seat comes out in a snap with the lower back seat.
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