Bridging a 4 channel

Can I feed two inputs, example: the front left and right channel, from the deck, into a 4 channel amp, bridge it, and expect the now 2 channles to play the same two that are being fed in? Or do i have to input four channles from the deck in order to properly bridge it?

You'll have to provide a signal to all 4 inputs, but all you have to do is get a pair of Y splitters so your R rca goes to the front R and rear R inputs on the amp, and the same thing with the L.

but a y splitter would cut the signal voltage in half, thus making the signal suck, and the audio equipment unhappy. At any rate, so I feed in the two inputs and then I have the connectors for the spaker wire, do I splice two channles worth to one speaker or is there a switch or soemthing. Its in the mail now, so I don't have anything to go by.



also when wiring two amps to one battery, how do I go about it, just connect both wires and then let the fuses do the work?

no it won't cut the voltage in half, it will be the same

As for connecting the speakers, your amp should have a diagram for bridging. You attach the speaker to the + from one channel and the - from another channel, it should have a picture saying which + and which - you use.

What do you mean "let the fuses do the work"? You can go about this 2 ways.
1) Each amp has its own power wire running to the + terminal on the batt separately
2) One power wire comes from the batt and goes to a distrobution block, where it's split to 2 wires, one goes to each amp.

okay, so bassically i jsut wire both to the same post and then they draw as much as they need.

I was askign about the amp because I bought it used so It probably doesn't have instructions.

The amp itself should have a diagram on it for bridging
like this:

http://www.cs.trinity.edu/~areynol1/amp_04.jpg

See that little
(+) --------- BRIDGE --------- (-)
under the speaker terminals?
That means to bridge the amp you use those outside + and - terminals.

lets say i have the situation, but im more concerned with the fact that there are 2 rca inputs and i only have one set of subwoofer out rca's, so do i just buy the y splitter? and if i do that will it actually decrease the power/quality of the signal?

o just for reference im using a rockford fosgate punch 700x

lets say i have the situation, but im more concerned with the fact that there are 2 rca inputs and i only have one set of subwoofer out rca's, so do i just buy the y splitter? and if i do that will it actually decrease the power/quality of the signal?

o just for reference im using a rockford fosgate punch 700x


That's the exact thing jdrumstik was asking

Use the y-splitters, it won't degrade the quality of the signal (unless you use crappy splitters) and it won't drop the voltage of the signal.

Yeah it won't drop the voltage, it just splits the current, which is fine since the signal is carried on the voltage. The Y-splitter places both of its outputs in parallel with its input. Voltage in parallel is the same, so your signal will be intact. There will be a *slight* overall drop in voltage due to the impedance of the splitter, but you shouldn't notice any quality differences if your RCA output voltage is decent, say >2V.

what do you know, the amp is really like two amps in one, butr when bridged it can take the siganl from amp A or both amp A and B, so that saves me some money on a slitter and a RCA cable


btw, I found some nice speakers on ebay but one of hte tweeters has been pushed in, what effect does that have, and if I can pop it back out is it the same as before?

No, you usually cannot pop the cap on the cone back out. As far as the effect, changing the shape of a specifically engineered cone will probably make it sound like crap.

well I didn't buy them, but i have done it before on my old bookshelf system when I was like 12. of course now im pushing a 620watt system through 6 speakers, 4 tower speakers by KLH pushing 12inch woofers, 3 1/4 mids and 3/4 inch tweeter, then i have a klh center pushing 2 2 inch mids and then a tweeter in the middle, and then I have a 10 inch 120W poted sub, it shakes the walls.