I'm going to go with the 2 12" Shivas in a sealed box. What size should i make the box and how much power should i run to the subs? Also, what amp (hopefully a relatively cheap one) would be best to push these subs?

 

I have a 760W Pioneer amp that I'd sell to help you push those.. Really cheap..

I'd say to run at least 500W to the subs.. I doubt you'd need much more power, though, unless you just want an insane amount of bass. Those Shivas can hit hard, though.

I wouldn't listen to the people that say you should get a 1000W amp.. You'll never be turning them up that loud.

Since you're throwing it into an Fbody, plan on using the entire Ttop storage area and build your box as big as possible... the Shivas will need like 1.2cubic feet each.. and make sure each part is separate.

 

Well, brx is right that you don't always need a 1000W amp. Power handling is COMPLETELY dependent on the enclosure. However, you are running in a sealed box and are most likely looking for the smallest size possible. (You ARE in an f-body ) Add that to the 375W per voice coil; 650W total to the driver Pmax of the shiva and you can see how a 1000W amp might be beneficial in this case.
I'm sure you want the best bang for the buck amp, correct? Try this amp. You can turn the gain down a tad to keep things in check. I recommend a slightly larger box then what brx recommended. Maybe something closer to 1.5?

 

I have a sealed, dual 12" box with 1.5 Ft^3 per sub (seperate chambers) designed to fit in the trunk well of the 4th gens, that I'd be willing to sell for $50. It's still in excellent shape. You can see a few pics of it on my cardomain page (link in sig).

The subs are NOT included.

I would prefer to sell it locally, so there's no freight hassle, but if the buyer wanted it shipped and paid shipping I'd do that.

 

I may choose the MTX 6500D amp. How do I wire the subs for a two ohm load? I'm confused because it has two positive and two negative terminals yet its a mono amp. Also, how beneficial is it going to be to run two subs instead of just one? Thanks in advance.

 

Connect all four positives together, then run it to the positive output of the amp. Do the same for the negatives. That will be a 2 ohm load.

 

It's really quite simple. Wire each sub for a 4ohm load and connect one to each output, it's still mono and runs them parallel for you. More subs = worse SQ(not by too much usually) and better SPL.

 

12" Shivas? Where they hell did you find those? They must be some of the crappiest subs. Cause ive never heard of them and ive been in the car audio industry for 6 years. If you need cheap subs there are alot of alternatives but jeasus Shivas isn't that some indian god? What are you gonna power them with a Pyramid amp? Those things have a circuit board thats the same size and output as a Timex watch.

 

Please don't post such nonsense if you have no idea what you are talking about.... www.adireaudio.com

 

Looks like you need to do a little more research... the shivas are one of the best subs for the money PERIOD!!!

 

Well im sorry I insulted your low quality brand of choice but for $125 dollars you could buy alot of nicer sounding sub woofers. A JL Audio 12W0 or a Kicker Comp. And if SPL is what you want you can find sub drivers from almost anywhere that will do 99.2 DB. And as far as not knowing anything I design and sell custom car systems and not the drop in sub box with a head unit you people buy. Serious systems that use good quality equipment like Audioson and McIntosh amps, DynAudio and MB Quart speakers, and JL and Eclipse subs. Systems that are in the 10s of thousands but of course to sell this stuff I must not know anything about car audio, just about quality car audio. And even if that doesn't qualify me to know anything about car audio I built and tested my own enclosure with a single 8 inch Kicker L7 with a Kicker KX1200.1 in a ported box to hit 145.1 db with no sound deading in the back of a camaro. But of course I dont know what Im talking about.

 

You don't need to get all offended because YOU didn't know about a good brand. We never said you didn't know about car audio. We simply stated that your coments about Adire were incorrect and not based on any knowledge other than the fact that you didn't know them. Your ignorance of a specific brand does not mean they aren't a quality product. Adire is a quality product. Just ask around about the Brahma and I'm sure you'll get a few opinions about it. I basically mean you just didn't know . I personally would run a Shiva over a W0 anyday. And that's cool, you're probably busy with the brands that YOU carry. And yes those are quality products you install, but there are many botique brands that most don't know about. I'm sure I'm ignorant of quite a few myself. Also, designing a great sounding sytem with a budget in the 10's of thousands is easy. Try doing it on a more limited budget like under $1000 and see what you come up with. Just because some self indulgent weiner comes into your shop and drops big money doesn't mean you know what you are talking about, necessarily. And no, not all of us just drop in prebuilt boxes. I construct all of my kicks, custom panels and boxes out of fiberglass or other similar materials used in the process thereof. What you need to do is realize that YOU made a mistake and be man enough to admit it. I repeat, no one said that you didn't know anything about audio. You just didn't know of Adire, which is kinda sad since they are a good company. Besides, if you're gonna get on your high horse and preace to the masses about your superiority you should probably use correct grammer. Insulting others with blatant gramatical errors only makes you look like an idiot, and you DO look like and idiot.

 

And that's enough for me never to buy anything from your shop...... or take your advice...... you sound EXACTLY like an employee of Best Buy.

 

AHAHAHAHAHAHAHAHA

 

IGNORANCE and extreme arrogance.... seriously read up on the shiva and you are going to feel pretty stupid for thinking a comp or a W0 is better quality.... educate yourself before you make such judgements please.... a friend of mine just hit 145 with a re SE 8 inch on a linear X mic (or what would be around 150 with a termlab) so your score with a single 8 really doesn't impress me....

Don't let the looks fool you the Shiva is a quality sub....