View Full Version : Installing amp?
Within a reasonable time I would like to get an am to help power the 6x9s in the rear. Only problem is that my knoldge of speakers runs out at installing speakers. How exactly does one run all the wiring to the rear and then back up? Im 99% sure there used to be an amp in the car as there is a positive cable lead in the hatch area (I havent checked, but right now its not hot and there is a spare wire up by the battery). Im sure a few of you know what you are doing.
BTW Im going to be getting INFINITY KAPPA 693.5i (http://www.crutchfield.com/S-aCtBwQGnp5t/cgi-bin/ProdView.asp?i=1086935I&search=693%2E5i) 6x9's and have a recommended power range 2-110 watts RMS, peak power handling 330 watts and my headunit only puts out a measily 16 watts RMS/45 peak x 4 channels. Also what amp would you recommend?
I was thinking the Audiobahn A4002T (http://www.crutchfield.com/S-aCtBwQGnp5t/cgi-bin/ProdView.asp?g=110&I=037A4002T) . Since it is 100x2 @ 4 ohm, it will give the speakers the best power.
I know crutchfield is a rip off, but I just refrenced their site. Usually I shop on there and then check out ebay. Once I get the items, perhaps one of you who knows what they are doing would mind helping me.
GP99GT
03-16-2005, 04:48 PM
amps are simple, you get power from the battery, for a small amp like that i'd recommend 8 or 6 gauge wire, and make sure theres an in-line fuse. then you ground the amp to some part of the body somewhere, i used my rear strut tower...you run RCA cables from the back of your stereo deck, under the dash and down the opposite side of the car that the power wire is on to protect from interference, and those hook up to the amp....then just use regular speaker wire fromt he terminals on the amp to the speakers. if any of that doesnt make sense, let me know.
one thing i just wanted to add, if your headunit doesnt have RCA outputs, you can still hook it up to an amp. low level inputs use RCAs, high level use speaker wire signal inputs. RCAS are better quality but if a radio doesnt have them, you can use the high level inputs on a amp or get a new radio. Also not all amps have high level inputs so keep that in mind too. One other thing i learned.. dont attach the amp to the metal body directly, when you do that, you make then entire amp casing a negative ground and it could(not always) cause problems, screw to wood then mount the wood.
I forget if it has the RCA plugs...Damn.
GP99GT
03-16-2005, 06:29 PM
One other thing i learned.. dont attach the amp to the metal body directly, when you do that, you make then entire amp casing a negative ground and it could(not always) cause problems, screw to wood then mount the wood.
mine just kinda lays in my trunk wedged between the speaker box, the spare tire, and the wheelwell :lol:
and if its a fairly new aftermarket head unit, it should have RCA outputs...
I looked in the trunk today. there are 4 (atleast 4) wires. 1 grounded to the trunk floor. 2 RCA inputs (I gotta see if they go all the way up to the head) and what looks to be a power. If the RCAs go all the way im, im good to go.
GP99GT
03-17-2005, 05:23 PM
I looked in the trunk today. there are 4 (atleast 4) wires. 1 grounded to the trunk floor. 2 RCA inputs (I gotta see if they go all the way up to the head) and what looks to be a power. If the RCAs go all the way im, im good to go.
heh you're lucky if its already wired for you, then its just a matter of putting it in the trunk and hooking up the wires.
http://home.comcast.net/~boss429/3wires.jpg
http://home.comcast.net/~boss429/ground.jpg
http://home.comcast.net/~boss429/pit.jpg
http://home.comcast.net/~boss429/rcaplug.jpg
that small black wire with the RCAs is most likely the amp remote turn on. Â*It looks like you still need a + battery cable run. Â*And IMO, change that ground, its too small and i think it seems to be about 10 gauge, do at least 8 gauge wires for power and ground.
Tru2Chevy
03-18-2005, 08:33 AM
I'll second that, it definetly looks like the signal wire.
- Justin
foff667
03-18-2005, 08:45 AM
as long as the ground is close to the amp you'll have no problems with that wire...ive installed probably 1/2 dozen systems in cars and as long as the ground is short you can run 10ga with no issues...like justin said that ? one is probably the signal wire...which tells the amp when to turn on basically.
foff667
03-18-2005, 08:46 AM
oh and if you want speakers cheap give me the part # and I'll see what i can get them for...for instance i can get the amp for $170+$10 shipping...otherwise best buy is the way to go they have some VERY good prices.
oh and if you want speakers cheap give me the part # and I'll see what i can get them for...for instance i can get the amp for $170+$10 shipping...otherwise best buy is the way to go they have some VERY good prices.
For the amp, I can get it for 134 shipped on ebay. And thoes infinity kappas i can get for 130 shipped. now its time to convince dad why I need an amp too.
foff667
03-18-2005, 09:39 AM
oh and if you want speakers cheap give me the part # and I'll see what i can get them for...for instance i can get the amp for $170+$10 shipping...otherwise best buy is the way to go they have some VERY good prices.
For the amp, I can get it for 134 shipped on ebay. And thoes infinity kappas i can get for 130 shipped. now its time to convince dad why I need an amp too.
cool...yah ebays a good place for last years models that places are trying to get rid of...i bought one of my old rockford fosgates amps off there...same one was selling in best buy still for like $800 i got it for $340 shipped off ebay, brand new...good stuff if they are a good seller.
oh and if you want speakers cheap give me the part # and I'll see what i can get them for...for instance i can get the amp for $170+$10 shipping...otherwise best buy is the way to go they have some VERY good prices.
For the amp, I can get it for 134 shipped on ebay. And thoes infinity kappas i can get for 130 shipped. now its time to convince dad why I need an amp too.
cool...yah ebays a good place for last years models that places are trying to get rid of...i bought one of my old rockford fosgates amps off there...same one was selling in best buy still for like $800 i got it for $340 shipped off ebay, brand new...good stuff if they are a good seller.
Ohh yeah. No doubt
Sigh, well the amp idea is out. Dad doesnt think I need to have it. Would I be better off getting the same speakers (the infinity) and just have them powered by the amp and not have them reach their full potential, or would I be better off get speakers that somewhat match the output of the head?
IE better to have
16 RMS/45 peak on speakers that can hold 100w or
16 RMS/45 peak on speakers that can hold say like 50w?
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