Sub question (and ford truck sound system ?'s) - Chevy Impala SS Forum
 
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post #1 of 9 (permalink) Old 08-11-2003, 05:12 PM
amickracing
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Not impala related, but since you audio guys seem to know your stuff, I wanted to ask here.

Ok, in my car I had 2 Rockford 12"s and a 500 watt Rockford amp pushing them. Sounded pretty good, especially for a cheaper system (I'm not into spending too much $$ of just audio).

Ok, now I'm wanting to put some subs in my truck, but still keep my back seat (ext cab). I'm pretty darn sure 12"s aren't gunna fit. I'm thinking I can get a 10", hopefully 2 under the seat if I raise it a bit. My question, roughly whats the smallest size enclosure I can get away with for a 10 (I know it varies a bit, but just a general idea)? Also, I'm thinking since it's right behind me with out much to dampen it (like in the car) they should hit pretty decent, but I don't know how much difference there is between 10's and 12's. Also, I'd like to go with a bit better sub that'll take some more power (heard good things about MB quart), and then get an amp to give them all they need. So, with the subs closer to me, better subs, and more power, this should be better than what I had eh?

These mods are a ways in the future, but I like to plan things so I have an idea at least how long I'll be in debt lol.

Thanks for the help guys and gals
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post #2 of 9 (permalink) Old 08-11-2003, 10:07 PM
Elemental
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*homer impersonation* mmmmm....subs (my specialty )

i work at a local shop and do many many (too many lol) installs in trucks, especially extended cabs. We sell prefab boxes made by Pro Box (and we do custom work too [img]smile.gif[/img] ) and carry some that do fit underneath the back seat of your truck. They are a downfire style (once in a while forward fire, but downfire sounds MUCH better and has more output) and house two 10's in a sealed enclosure, seperate chambers.

internal airspace in these boxes vary from vehicle to vehicle. i know there's a box for some Ford's that includes a lil lift kit for the back seat, not sure if chevy has one. But on average you're looking at around 0.6ft^3 per sub, which is fine for most 10's in sealed applications. Boxes usually run around $150-200...custom boxes are even more.

I have never heard MB Quart subs but the name has a very good reputation with SQ (sound quality) people. How much money were you looking to spend on subs? I can name some good brands but i don't know what level you're looking for. I can name some $60 subs or i can name some 10's that are $250+ each, some only handle 100W, others handle over 700W (not the W7 either...way overpriced compared to some other drivers out there ).

also, what amp would you be using or are you buying that too?
post #3 of 9 (permalink) Old 08-12-2003, 12:16 AM
amickracing
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Should have mentioned, 2000 Ford f-250SD ext cab, maybe thats something I should add to the sig? lol

Anywho, I'm kind of throwing ideas around at the moment, so honestly I'm not sure how much I want to spend or what I want to use (I figure I need a new head unit and probably new regular speakers 1st).

As for the subs I want to use? Something that takes a fair bit of power, something that hits hard, but sounds crisp and clean (I'm mostly after sound quality that bumps, I'm not into the I want everything to rattle, who cares if it sounds good). Not dead set on an amp either, basically what ever it takes to make the subs happy. The Rockford 550s amp that is used with the 12's seems to be a pretty decent amp. I wouldn't mind using it if things work out right, since I'm fairly new to audio I'm not sure if it has the power to push good subs hard.

I think for the box I'd like to build something myself, some to cut costs down, but also the pride in doing customing myself

By the way, what are the stock speaker sizes in my truck?

If it wouldn't be too much trouble do you think you could get a picture or 2 of the sub enclosures you use (or something similar)? I was a bit supprized to hear of a down firing sub in a car, but hey, what ever works right?
 
post #4 of 9 (permalink) Old 08-12-2003, 02:28 AM
sal16
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what kind of truck is it? they might make custom boxes for it. there are a lot of 10's that can use as little as like .2 cu. ft. (dont forget to add the volume of the sub itslef). the biggest problem becomes making the box deep enough for the sub when putting it under the seat.
post #5 of 9 (permalink) Old 08-12-2003, 03:41 AM
amickracing
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2000 Ford f-250SD ext cab

I've ran across a site or 2 that has boxes for my truck, and I certainly hope there is better out there. If I recall they were for 8" subs (kinda small in my opinion), plus they look like they were made by a 7th grade wood shop
post #6 of 9 (permalink) Old 08-12-2003, 07:21 AM
chevmdnss
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To give you ideas.......


Check out QLogic Scroll all the way down, it's the LAST group for that year F250/350


JL AUDIO for bench seats
bench seat box

Elemental is right about ProBox too. They work and fit well.

OR w/ Bucket seats
post #7 of 9 (permalink) Old 08-12-2003, 11:49 AM
sal16
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i likecustom boxes. you can get them for about 150 if you can get a good price. the only thiing about them is that you have to make sure the sub is not too deep becasue some of those boxes are pretty shallow.
post #8 of 9 (permalink) Old 08-12-2003, 05:17 PM
amickracing
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After doing more dreaming, er I mean thinking on this, I've been trying to find pictures or ideas of a down firing car sub box.

The floor in the back of my truck rises 4" or so as it gets towards the back of the cab... I knew it wasn't flat, but didn't remember that big of a bump. Anyway, how do you setup the box to fire down? I assume you need some room for a bit of air to escape uner it (similar to home theatre sub box's), and also to keep the speaker from hitting anything...

Can anyone fill me in?
post #9 of 9 (permalink) Old 08-13-2003, 12:17 AM
sal16
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the edges of the box are usually about 1/2" or so higher than the face where the sub actually mounts so its kind of raised
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