Got a few questions about a system for a truck i just bought.

1. Just has 2 speakers, 1 in each door. would it be worth putting 6x9's or something in boxes on top on the sub box behind the seat?

2. for components. how are the tweeters wired in relation to the deck? or are the wired off of the speaker in the door?

3 Sub box i found online that fits behind the seat looks somewhat small. says 73 Cu. Ft. Per Chamber. looking to get alpine type s subs. 10 or 12"... thoughts?

Any other experiance or advice would be appreciated.
thanks

 

1) Couldn't hurt. It all depends on the sound you want, but it should add some richness.

2) That would work, but you'd want to put a resistor and caps on it to filter out the bass. Or you can get a crossover box for it.

3) Are you sure on the 72 cu ft? That seems a bit large. Either way http://www.bcae1.com/spboxnew2.htm has a calculator to figure out the best volume for your enclosure.

 

That was .72, sorry forgot the decimals. leaning towards the alpine type S 10's. Specs looks like .72 should be enough for them. now for amp. Something that would give em close to 300rms each idealy. Suggestions?

 

alpine makes great audio, my truck has 2 speakers in the doors and 2 in the rear of the reg cab are u sure there aren't any? if not you can always wire them in to the speakers in the door because it would be the same as in to the deck. most component speakers come with an amp so you would have to wire that separately or though the wiring of the amp for the subs.

 

Yeah had a look, actually are some back there. panels look really really hard to remove though, may leave those stock

 

there are a few push pins that hold it on some type of clamps. i just ripped mine off and installed new ones and then put the panel back it stays snug and doesn't rattle. The main thing is to remember to screw the speakers in real tight so they don't rattle as the bass bumps i made this mistake and had to take it all apart again

 

Its worth it to go to 6x9s because it opens up your options from about 5 brands to about 500. But you won't notice much sound difference because of the different size. Don't go complex by putting more speakers in the box. You won't hear them anyway. Simple is good. You only need enough to reproduce sounds in each frequency range. Tweeters do the highs, mids do the mids, sub does the lows. No need to add more speakers.

The component set comes with two mids, two tweeters, and two crossover boxes. You hook up the speaker wires (+ and -) to the crossover box, then there are four more terminals that send the split signal out to the tweeters and the mids. You just hook it up in the door with the stuff they give you.

The sub manufacturer will have a recommended volume range for a box. As long as you're within that range you can expect the sub to operate as well as it can. If you're just outside that range, don't stress too much. Smaller boxes will make the resonant frequency higher and it won't make as much volume down low. If you go more than about 5-10% smaller, you could end up damaging or stressing the sub if you push it hard.

Speakers in sealed boxes typically require less volume than ported or bandpass, so keep it sealed. Smaller speakers require less volume, and smaller cabins require less bass, so I would recommend staying with the 10" for space reasons. I had a single 10" Eclipse sub in an Impala SS, and it had no trouble filling the car with loud bass, so two 10s will make your ears bleed in that little truck cab. No need for 12s

Remember to fill your boxes with polyfill pillow stuffing. The random fibers will deflect sound waves and help smooth out the frequency response, and make the sub "think" its in a slightly larger box.

Also remember, that the .73 cu ft is the BOX volume. You have to subtract the volume of the sub's basket/magnet. The sub's basket volume is often available from the manufacturer.

 

ok 10's it is. looking at the alpine mrp-m500 amp. At 2ohms would give each sub 250rms, they are rated for up to 300 though. however i saw this amp at the store powering two jbl 12's and it was really loud.

any thoughts?

 

I would not always trust what you hear into audio stores. 9/10 times the systems they have sitting out playing wont sound like what you're going to get if you purchase them, there just there to "Impress" and lure you into buying them. Go to Crutchfield.com and look around there. There Profile Amps are wonderful, and a lot more budget friendly then some of the other brands, yet they perform just as good, if not better.