placement for sub woffer
Thread Starter
Drifting
Joined: Mar 2004
Posts: 1,873
Likes: 1
From: Savannah Ga
placement for sub woffer
I just upgraded my speakers in my 82CE.All I did was get better speakers in the same size and place that GM put them.I would still like more base.Where can I put a sub without taking up a lot of room.I'm thinking maybe an 8 in wouldwork
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
YEssir, you can make anything work anywhere in ay car....trust me.
As for a sub woofer, allow me to suggest the Adire Audio Brahma 10" in a dual ported tuned to 30hz box positioned back behind the center console. You can make it fit, if it wont fit, then youre going to have some issues finding 8" woofers with decent frequency response, but again Adire Audio makes an 8" Koda woofer that is as loud as most 10".
They are true SPL/SQ machines, Ive heard them in comps, and they are deadly little buggers. Tought to get but not too pricey, but if you want a damn good stereo, go for em.
As for a sub woofer, allow me to suggest the Adire Audio Brahma 10" in a dual ported tuned to 30hz box positioned back behind the center console. You can make it fit, if it wont fit, then youre going to have some issues finding 8" woofers with decent frequency response, but again Adire Audio makes an 8" Koda woofer that is as loud as most 10".
They are true SPL/SQ machines, Ive heard them in comps, and they are deadly little buggers. Tought to get but not too pricey, but if you want a damn good stereo, go for em.
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
Originally Posted by Mike Mercury
the nice thing about sub-woofers is that positioning within the car is not all than critical. Just "somewhere" within the cockpit will give great results.
Depending on the dampening characterists ie sound absorbption of things like seats, head liners, and even how you have the sub box bolted down all determine the final sound quality and spl of the sub.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Thats actually not true.
For possible rattles; I agree with you though.
But frequencies below 120hz have no directional characteristics.
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
be that as it may, Im not going to entirely agree with that either, all sound waves regaurdless of frequency have some directional characteristics, bass IS always loud though moreso than high frequencies, that's simple wave mechanics, but the placement of a port too near a solid object, or the placement of a high X-max speaker too close to a fixed object will muffle and distort sounds, especially with an SQ setup where youre not getting more than 100db of bass.
Last edited by 81 Vette; Oct 3, 2004 at 02:54 PM.
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
you know what though? After doing a bit more research you ARE correct that Bass is OMNI directional, not necessarily NON directional, it IS directional, just in a clear 360 degree 3d form. Sorry if I sounded a bit harsh on that, just misunderstood. 
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Racer
Joined: Oct 2002
Posts: 452
Likes: 158
From: Newark, DE
Bass is in fact omnidirectional. Where speaker placement comes into play with a subwoofer is in interference patterns. Sound bounces off solid objects and the interference pattern creates standing waves (think way back to the wave tank in your high school physics class). If your head is in a node in the standing wave pattern, you don't hear any sound. If you're in an anti-node, it's really freakin loud. Placement of a sub is important because the wavelengths are long enough that a node in the sound field can be large enough for your whole head to fit in. Higher frequencies have interference patterns that are too small for it to matter, but again placement is important because high frequencies are directional. The bad part is, all of this is pretty much impossible for a DIYer to model, there's just too much complexity. So build yourself a box that you can move around and play with where the sub is located.
Melting Slicks
Joined: Jul 2002
Posts: 3,000
Likes: 22
From: Boulder Creek California
Anyone done the ol' sub in the jack storage compartment thing? My main worry with that is the material that makes up the box might not be good, so I'm considering a box in the box so to speak. It seems plenty large, although odd shaped. Any ideas?
-Chris
edit: oh yeah, another question (sorry to be hijacking here, but I think it's all pretty much on topic) the carpeted part of that box lid is 10" across, will a 10" speaker fit or do they have alot of "lip"? A square kicker would fit really well, but a round one would be okay too.
-Chris
edit: oh yeah, another question (sorry to be hijacking here, but I think it's all pretty much on topic) the carpeted part of that box lid is 10" across, will a 10" speaker fit or do they have alot of "lip"? A square kicker would fit really well, but a round one would be okay too.
Last edited by LiveandLetDrive; Oct 3, 2004 at 07:42 PM.
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
Youd have to fiberglass it in, thats about the only way youll get the proper CuI capacity and ridgidity for a sub in that small a space, unless you want to start cutting things up?
Melting Slicks
Joined: Jul 2002
Posts: 3,000
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From: Boulder Creek California
Small? It's over a cubic foot which looks fine with most 10 inchers specs for sealed enclosures? Oh, sorry if I wasn't clear, I meant remove the jack, the "tray" and all else from that compartment.
-Chris
-Chris
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
when youre talking abut 10" subs and up, 1 cube ISSS small. You cna do a sealed enclosure with 1 cube, but that means youll have to buy a roughly 25% more powerful amp to get the same db level as opposed to a ported setup.
Racer
Joined: Jul 2004
Posts: 420
Likes: 1
From: Lapeer MI
1. Subs are omnidirectional
2. A 10" square kicker has about the same surface area as a 12" round sub
3. I had a 15" PPI Pro in a bandpass that filled up the back end. But no room for other things. I couldn't hear anymore rattles as I went over bumps.
2. A 10" square kicker has about the same surface area as a 12" round sub
3. I had a 15" PPI Pro in a bandpass that filled up the back end. But no room for other things. I couldn't hear anymore rattles as I went over bumps.
Pro
Joined: Sep 2002
Posts: 620
Likes: 2
From: San Antonio TX
I just use a Kenwood self powered sub. It has a ported 10" driver and "i think" 200 watts. It goes well with my Infinity 6X9 three ways in the back and Polk Audio 2 way plates in the dash. I have a Sony 52WX4 AM/FM/CD stereo unit in the console. I run the four speakers with the stereo amp. I run the sub off of the non-amplified rear outputs. The Kenwood is a dual voice coil so that works out well.
It sounds great, once you balance and equalize everything out. Now, is it going to win a stereo competition? Who cares! But I'll tell you that my college and high school age kids (and their friends) think it really kicks butt. I usually don't even have it on when I'm barrelling down the highway anyway. I like hearing the car.
The best thing about the sub is that when I plan on getting a little aggressive, or need to carry a bunch of luggage or whatever, I just unplug it and pull it out.
It sounds great, once you balance and equalize everything out. Now, is it going to win a stereo competition? Who cares! But I'll tell you that my college and high school age kids (and their friends) think it really kicks butt. I usually don't even have it on when I'm barrelling down the highway anyway. I like hearing the car.
The best thing about the sub is that when I plan on getting a little aggressive, or need to carry a bunch of luggage or whatever, I just unplug it and pull it out.
Burning Brakes
Joined: Sep 2004
Posts: 917
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From: Vernon British Columbia
St. Jude Donor '05
First C3 General Poster!
Im just a little **** about the space thing because I built my 3 12" sub system in the back of a TOYOTA truck so I can relate about those problems, I have the experience of competing in SPL drag to tell ya whats gunna work for ya, but anyhow. You can NEVERRRR go wrong with fiberglassing an enclosure, itll be the best looking, sounding, and durable setup youll ever have. You can just stick in a bandpass or a sealed enclosure and run some wires if youre not into a hardcore setup. Its all depending on what you want out of your sound system. For me, I dont settle for anything less than perfection in ANY aspect of my vehicles.
Race Director
Joined: May 2004
Posts: 11,920
Likes: 2
Just fooling with you!
I know how important space is, especially if your wife goes with you for a weekend in the Vette.
I fixed that with my fuche traler.....the number plate on the Vette folds down for the hidden hook up and when I unhook the trailer the number plate folds back up....you will never know it has a hitch!!!
It's great to drag Donkey cars with a pink trailer in tow and beat them....
I know how important space is, especially if your wife goes with you for a weekend in the Vette.
I fixed that with my fuche traler.....the number plate on the Vette folds down for the hidden hook up and when I unhook the trailer the number plate folds back up....you will never know it has a hitch!!!
It's great to drag Donkey cars with a pink trailer in tow and beat them....
