under seat sub box up or down - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NYC-10 · 10-29-2007, 11:45 AM

just bought 2 12" subs for under seat installation-should I face them towards the seat or floor

72 cheyenne pdx · 10-29-2007, 02:51 PM

It doesn't really matter. If you do face them down, I would recommend having 2" of space between the floor and the bottom of the box to move the air. Most people have them face up though.

Good Luck

72freak · 10-29-2007, 04:09 PM

Face them up............Ive done it both ways............UP

Mr79C10 · 10-31-2007, 05:12 AM

Quote:

Originally Posted by 72freak

Face them up............Ive done it both ways............UP

isn't it a different tone of base if their down?

Beas5713 · 11-01-2007, 02:36 PM

It mostly depends on the style of music you listen to. If you primarily listen to rock, country, etc. then you should face them upwards for smooth response. If you are looking for hard hitting bass for R&B, Pop, etc. then the down firing position will be best. If you aim them upwards be sure to protect the speakers with grill plates, or your rear may bust them. If you choose to go with the down firing position the box should have 2” of clearance towards the rear and 2 ¾" at the front. The angle will result in better sound due to the fact that bass has a sound pattern that disperses across surfaces flat, so the angle will provide more efficient reflection. You will need to invest in sound deading material for your cab and doors for the best sound.

chevy72blu · 11-09-2007, 01:35 AM

2" is far more than neccesary to down fire them. 1/2"-3/4" is plenty.

I dont really agree with the above posters. Downfiring seems to provide a better all around low end sound in tight areas whereas upfiring them makes the stage seem "punchy". Of course, every system is different and things such as box construction play a huge factor. Try both and go with what you like better.

djracer · 11-21-2007, 12:22 AM

I prefer down fire! Subs need a hard surface to resonate off of!

Tom · 11-24-2007, 06:15 PM

I took my 10" custom fit down firing box out of my 98 after one day. I had a 12" in a behind the seat reg. cab box sitting around so I put that in facing up. It sticks out past the seat but it sounds 200% better.

Hair · 12-19-2008, 05:06 PM

Quote:

Originally Posted by NYC-10

just bought 2 12" subs for under seat installation-should I face them towards the seat or floor

Did you get them under your seat, and could you post a picture of your box?

killacheyenne · 12-20-2008, 05:42 PM

lets see a pic of your box

Hair · 12-22-2008, 11:51 PM

Quote:

Originally Posted by NYC-10

just bought 2 12" subs for under seat installation-should I face them towards the seat or floor

Well... did you get them to fit under the seat or not??

NYC-10 · 12-24-2008, 12:27 PM

they fit under no problem-I did this during the summer so I don't have a picture right now

Hair · 12-26-2008, 11:36 AM

Quote:

Originally Posted by NYC-10

they fit under no problem-I did this during the summer so I don't have a picture right now

I'm trying to do the same exact thing now (2 12's under the seat). I'm trying to get at least 2cu ft for each speaker. I have the shallow mount 12" Kickers.

I'd really like to see a picture of what you did!

How does it sound?...and did you end up pointing them up or down?

djracer · 12-26-2008, 07:26 PM

I don't know of any truck you can get 4 cubic feet under the seat.

NYC-10 · 12-27-2008, 12:20 AM

I put the subs facing up-and I'm very happy.I had a 72 blazer with a big box in the back and the base had a harder kick,but for what it is it sounds really nice.Between the subs and the bostons in the kicker panel It sounds mint.

Hair · 12-29-2008, 10:52 AM

How much cu ft did you end up having in your sub boxes?

Like djracer said, I'm scratching my head trying to figure out a box.

I am planning on removing the stock seat brackets and making my own that will give more clearance.

I'm planning on the box on the driver's side to extend over to the passenger side, and then the passenger side box will extend up behind the seat where I have a little space beside the gas tank. I think I can barely sqeeze 2 cu ft out of them, but I don't know yet. It looks good on paper...but that's paper.

So when you came on here and said that you are going to throw two 12" subwoofers under the seat like nobody's business and just wanted to know if they should be pointed up or down you became my instant hero.

So how much space did you end up with in your boxes or or they like free air mounted or something?

NYC-10 · 12-29-2008, 08:45 PM

I just built the biggest box I could fit under a stock height seat and divided it in half.I didn't get to technical.If the box is not big enough You can buy a filler (pillow stuffing)that tricks the speaker into thinking the box is bigger.Maybe in two weeks I'll have pics

badblu97 · 12-30-2008, 12:55 PM

Heres a pic of mine, 2 10" Kicker CVT's DOWN firing....wouldnt have it any other way, and I listen to all types of music. And I know its a new body, but same thinking I would imagine...I would say 2' is just about right for spacing. Look at how a sound wave works and it will make more sense...just my .02

pumpgas · 02-14-2009, 08:23 PM

Quote:

Originally Posted by NYC-10

I just built the biggest box I could fit under a stock height seat and divided it in half.I didn't get to technical.If the box is not big enough You can buy a filler (pillow stuffing)that tricks the speaker into thinking the box is bigger.Maybe in two weeks I'll have pics

So where's the pics??

foosed · 12-17-2009, 11:08 AM

what are the dimensions on that box? any pics?

10-29-2007, 11:45 AM	#1
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	under seat sub box up or down just bought 2 12" subs for under seat installation-should I face them towards the seat or floor __________________ SCREAMIN EAGLE

10-29-2007, 02:51 PM	#2
72 cheyenne pdx Registered User Join Date: Nov 2006 Location: Portland Posts: 382	Re: under seat sub box up or down It doesn't really matter. If you do face them down, I would recommend having 2" of space between the floor and the bottom of the box to move the air. Most people have them face up though. Good Luck

10-29-2007, 04:09 PM	#3
72freak Rottenwood Garage Member Join Date: May 2005 Location: Marietta, Georgia Posts: 4,321	Re: under seat sub box up or down Face them up............Ive done it both ways............UP __________________ 2004 Chevrolet Suburban C1500 2001 Chevrolet 2500HD Crew 6.0 1999 Harley Davidson Electra Glide 1972 Chevrolet C-20 Custom Camper "Dump Truck" 1972 Chevrolet C-20 Suburban "Big Green" 1969 Chevrolet C-50 Wedge Hauler "Leonidis" 1966 C-10 2x4 short fleet 327 4 speed "Race Truck" 1952 Plymouth Cranbrook "Rican" (my grandfathers) 1931 Ford Model A Coupe "Black Beauty" 1930 Ford Model A truck "Club Cab" 4x4 Rottenwood Garage and Speed Shop.....where everything must be racy! *It's not just a hobby..It's a LIFESTYLE!!!* Thanks for nothing Barrett-Jackson You cant fix stupid or teach accountability! Time wasters, looky Lous and tire kickers are everywhere!

11-01-2007, 02:36 PM	#5
Beas5713 Registered User Join Date: Aug 2007 Location: Navarre, FL Posts: 18	Re: under seat sub box up or down It mostly depends on the style of music you listen to. If you primarily listen to rock, country, etc. then you should face them upwards for smooth response. If you are looking for hard hitting bass for R&B, Pop, etc. then the down firing position will be best. If you aim them upwards be sure to protect the speakers with grill plates, or your rear may bust them. If you choose to go with the down firing position the box should have 2” of clearance towards the rear and 2 ¾" at the front. The angle will result in better sound due to the fact that bass has a sound pattern that disperses across surfaces flat, so the angle will provide more efficient reflection. You will need to invest in sound deading material for your cab and doors for the best sound.

11-09-2007, 01:35 AM	#6
chevy72blu Registered User Join Date: Apr 2004 Location: Las Vegas, NV Posts: 2,188	Re: under seat sub box up or down 2" is far more than neccesary to down fire them. 1/2"-3/4" is plenty. I dont really agree with the above posters. Downfiring seems to provide a better all around low end sound in tight areas whereas upfiring them makes the stage seem "punchy". Of course, every system is different and things such as box construction play a huge factor. Try both and go with what you like better. __________________ RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e

11-21-2007, 12:22 AM	#7
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: under seat sub box up or down I prefer down fire! Subs need a hard surface to resonate off of! __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

11-24-2007, 06:15 PM	#8
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,748	Re: under seat sub box up or down I took my 10" custom fit down firing box out of my 98 after one day. I had a 12" in a behind the seat reg. cab box sitting around so I put that in facing up. It sticks out past the seat but it sounds 200% better. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

12-20-2008, 05:42 PM	#10
killacheyenne Registered User Join Date: Dec 2008 Location: Arkansas Posts: 153	Re: under seat sub box up or down lets see a pic of your box __________________ 72 cheyenne super 83 chevy...4x4...454

12-24-2008, 12:27 PM	#12
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	Re: under seat sub box up or down they fit under no problem-I did this during the summer so I don't have a picture right now __________________ SCREAMIN EAGLE

12-26-2008, 07:26 PM	#14
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: under seat sub box up or down I don't know of any truck you can get 4 cubic feet under the seat. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

12-27-2008, 12:20 AM	#15
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	Re: under seat sub box up or down I put the subs facing up-and I'm very happy.I had a 72 blazer with a big box in the back and the base had a harder kick,but for what it is it sounds really nice.Between the subs and the bostons in the kicker panel It sounds mint. __________________ SCREAMIN EAGLE Last edited by NYC-10; 12-27-2008 at 12:21 AM.

12-29-2008, 10:52 AM	#16
Hair Registered User Join Date: Mar 2008 Location: Tullahoma, TN Posts: 406	Re: under seat sub box up or down How much cu ft did you end up having in your sub boxes? Like djracer said, I'm scratching my head trying to figure out a box. I am planning on removing the stock seat brackets and making my own that will give more clearance. I'm planning on the box on the driver's side to extend over to the passenger side, and then the passenger side box will extend up behind the seat where I have a little space beside the gas tank. I think I can barely sqeeze 2 cu ft out of them, but I don't know yet. It looks good on paper...but that's paper. So when you came on here and said that you are going to throw two 12" subwoofers under the seat like nobody's business and just wanted to know if they should be pointed up or down you became my instant hero. So how much space did you end up with in your boxes or or they like free air mounted or something?

12-29-2008, 08:45 PM	#17
NYC-10 screamin eagle Join Date: Oct 2007 Location: westbury ny Posts: 237	Re: under seat sub box up or down I just built the biggest box I could fit under a stock height seat and divided it in half.I didn't get to technical.If the box is not big enough You can buy a filler (pillow stuffing)that tricks the speaker into thinking the box is bigger.Maybe in two weeks I'll have pics __________________ SCREAMIN EAGLE

12-30-2008, 12:55 PM	#18
badblu97 Double 6's Join Date: Oct 2008 Location: Winter Haven, FL Posts: 349	Re: under seat sub box up or down Heres a pic of mine, 2 10" Kicker CVT's DOWN firing....wouldnt have it any other way, and I listen to all types of music. And I know its a new body, but same thinking I would imagine...I would say 2' is just about right for spacing. Look at how a sound wave works and it will make more sense...just my .02 Attached Images Last edited by badblu97; 12-30-2008 at 12:56 PM.

12-17-2009, 11:08 AM	#20
foosed Registered User Join Date: Aug 2008 Location: Huron, sd Posts: 463	Re: under seat sub box up or down what are the dimensions on that box? any pics? __________________ 1970 c/10 swb (show truck) 1972 custom/10 deluxe 4x4 (restoration pending) 2011 silverado ecsb z71 (daily driver)



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