Hey
Im preety new to the car audio scence, and i had a question about RCA out puts on my head deck.
I just bought a Sony cdx-MP50 head deck, it has front and rear RCAs but has no designated sub output. I was wanting to know, if it is possible for me to run my front 6" and rear 6x9" speakers, aswell as 2 subs of sum kind off this head deck. I dont have enough money to get a new one for a while.
Thanx for any help

RUnning subs off a headunit wouldnt be very good.....you probly wouldnt even hear them.
Your RCA outs are what u plug RCA's into and connect the other end to an Amp. The amp then powers your subwoofers.
You will however be able to run your 6" and 6x9's off the headunit with no problems at all.

Hey
Im preety new to the car audio scence, and i had a question about RCA out puts on my head deck.
I just bought a Sony cdx-MP50 head deck, it has front and rear RCAs but has no designated sub output. I was wanting to know, if it is possible for me to run my front 6" and rear 6x9" speakers, aswell as 2 subs of sum kind off this head deck. I dont have enough money to get a new one for a while.
Thanx for any help
Yeah, easy as.
If u just wanna run the speaker from the head deck (not amplified) & a sub (must be amplified), then use the rear RCA outputs, plug them in ur sub amp, & set the Low Pass Filter of ur amp to about 80Hz (or whateva ur Sub spec sheet recommends).

If you are running a speaker amp as well, run the front RCAs to amp, and run the rears to a splitter, then to the rear amp & sub amp.

All a subout does is make it easier to connect, as well as do the Low pass filtering in the HU.
I've attached a diagram.. Hope this helps.

Please don't split the signal with Y-cables or piggy backs or anything dodgy like that. What you're doing there is effectively halving the input signal to each amp, which is gonna result in a very poor signal-to-noise ratio.

Most amps should have an active "Thru" type output which, in my opinion, should be exactly the same as the signal coming into the amp, without signal loss, which will allow you to "daisy-chain" several amps. Thus, you can take the rear RCA output from your headunit, send this to your rear 6x9 amp (which will power your 6x9s), and then take the output of this amp and send that to your Sub amp (which will apply a low-pass filter and power your sub), leaving you with the front RCA outputs to power your front stage.

Please don't split the signal with Y-cables or piggy backs or anything dodgy like that. What you're doing there is effectively halving the input signal to each amp, which is gonna result in a very poor signal-to-noise ratio.

Most amps should have an active "Thru" type output which, in my opinion, should be exactly the same as the signal coming into the amp, without signal loss, which will allow you to "daisy-chain" several amps. Thus, you can take the rear RCA output from your headunit, send this to your rear 6x9 amp (which will power your 6x9s), and then take the output of this amp and send that to your Sub amp (which will apply a low-pass filter and power your sub), leaving you with the front RCA outputs to power your front stage.
OoooooK... never thought of doin it like that! i just had a look on my old 2ch amp, & the thru output is actually one of the normal inputs!(didn't notice if it was switched) For that reason u may need to take the rear RCA lead to the Sub amp to split it, then from it's thru output to the rear amp, unless your speaker amp has a seperate dedicated tru output.

Yeah, that's why I kept saying "should", cause while I know that my amp does have the Thru link, I'm not 100% sure of how many other amps do.

Nothing wrong with RCA Y splitters, the input impedence of the amplifiers is so high as to be negligable (2K ohms+) - you cannot do this with video, but with unbalanced audio - no probs...

Balanced audio is however a different story...

Cheers
Heath Young