And then speakers. Has anyone done a similar thing, so I can follow suit in what to construct? I know 2 of the subs are going under the rear bench, and the other three have to up front somewhere. I might pack 3 under the back and have 2 up front, but then it gets uneven, etc. And then there were amps. The subs are all 10", 125 watts RMS, and the 15"(the fifth sub) will be about 400-600 watts, prob 200 watts RMS. Now I need to run 5 subs off an amp or 2. I'm looking at a 4 channel and then a mono, which would run the 10's and the 15, respectively. What would be my best choice for an amp, since I don't necessarily need 125 watts out of each channel, a 100 watt/channel amp would be fine. The 15" would be full blown, and of course, I could sell it off as a riot vehicle to blow the crowds away. Now power. I'm quite sure on the 65 amp alternator in my truck, no doubt, but will it pack the punch to power 5 subs, the deck, speakers, heaters, etc., etc. Should I even waste my time on 5 subs, and go with 3, and so on. Thanks for all youtr help in advance
Craig

 

well if there a good brand of sub 2 will blow the doors off if you go cheap i don't know


i have a 10" im my car but its a crappy brand so its ok but i would say go with the 15 of a good quality and a good amp

 

97ford281 - You should bridge those subs with a flux capacitor or there could be a pase issue (oops - I mentioned capacitor - ignore that I said that).

Seriously, unless you're planning on severe SPL, that amount of subs is just overkill. Remember, low frequencies are the minoroity of the music spectrum; the thump is nice, but if you can't hear any vocals, horns, strings, etc., then we have a problem. Some people like using multiple smaller subs like the 10 inch subs, whereas some prefer one or two larger subs. Since were talking about an extended cab, I can imagine a need for more than three 10s (that would be my preference - or two 12s). As for an Amplifier, either a five channel that supports one large channel for the subs (wired in parallel as one channel) or a four channel and a mon amp for the subs. Wattage will simply depend on the volume you desire and the efficiency of the speakers that you get (db measured at 1 watt/1 meter). Honestly, a 100 watts per channel for the mids and highs and 200 or 300 watts for the subs is enough to lose some glass out of your truck.

The alternator will have to go. 60 Amps is bairly enough for the stuff already on the truck. Take a look at the fuse(s) on a 200 or 300 watt anmp in a store and you'll get the idea. Plus, if you get a bigger alternator, you won't come back and start a thread on capacitors...

That's my two cents

 

I'd get 3 Mono amps. IMO, I like Mono better for subs. Im assuming your subs are 4 ohms and the amps would be 2 ohm stable. I'd get 2 amps that put out 200wRMS@2 ohm. Hook the 4 10's to those amps paralleled.

If the 15" is not Dual voice coil, I'd get an amp that does maybe 150wRMS@4 ohm. If it is DVC, 150wRMS@2ohm is good.

Like morcutt said, just my two cents....it's all up to you . Oh yea, that alternator has got to go.

 

What if I used an International alternator from a rig? Wil it rob all my HP except for about 12, and will it fit?

 

Problem with 3 mono amps is finding space. I think I'll stick to 4 subs max., 3 under the rear bench and one under the front seat. But I still have limited space. Fords were designed more to the culture of usefulness, not space for sound systems.

 

As stated, depending on purpose, some 10's or 12's would do fine. If you want hard hitting, get 4 good 10's put some power behind them in a sealed box, and hang on cuz they are going to hit.

The alternator definately has to go, Current x Voltage = Wattage 65x@13.5=877watts
Don't forget, the vehicle needs to have some of that wattage to run itself. Bigger the alt the better.

 

So how about an old Caddy alternator, something putting out around 90 amps? Would I be able to make one of them fit? Remember, I'm running 125's, and the way it loks now, I'll probably just run 4 125's, either all 10's, or 2 10's and 2 12's.