not enough pre-outs....

[HCVP]

Today i purchased a set of Clarion 6.5 Coaxials, and fitted them to the rear, and i just have them running of the head unit. Already fitted were front splits and a single sub. After fitting the rears, I'm finding overall that the sound quality is reduced, and i can't turn it up as loud, as the rear speakers begin to distort, sooner than the fronts. I'm running a HPF set at 80hz.
The rear speakers are rated at 55RMS each, so i'm wondering if i should purchase a small (and cheap) 2 channel amp to power them. I was thinking something around 50-60 watts per channel. Currently my front's are recieving 125RMS each, so would that amount of power to the rears be a good match? Or should i be doing something else? Also, if i do purchase an amp for them, my head unit only has 2 pre-outs. 1 for the front, and 1 for a sub. What would i need to do to get an additional amp working with the current setup?

[Philthy]

I'm running my front and rear amps off the one pre-out on my headunit.
Just use y-splitters up at the amp end and use the left for one amp and right for the other. You're stereo left and right will become front and rear though

[HCVP]

what do you mean by left and right will become front and rear? does that mean if the music is playing, and the sound is meant to switch form left to right, it will then go from the front to the back instead?

[Philthy]

Yeah, and the balance will work front to back instead of left to right.

Because the RCAs have a L+R signal, and you will be feeding the L signal into one amp and the R into the other

[sweefu]

hey mate, will be interested to see the difference with an amp, cus i'm in the same position as you now and i'm wondering what to do.
Cheers.

[sycvs]

kmart / jcar or any electrical plce sell little plugs that go from 1 rca to 2 rca then i would use 1 amp for back and 1 for front so you still have the real stereo efect L-R or if the amp has high level in then the speaker outputs from the head unit can conect to it and you will then have L-R front and back thats how i would do it and if your problem is to much bass on the speakers then turn it down and turn sub up it will even it out
hope thiss helps let me know if it does cheers

[HCVP]

There not getting too much bass, i'm running them on high pass, as with the fronts. Main problem i'm assuming is that the fronts are getting combined, 250 watts RMS. Then the rear's are only recieving somwhere between 10-20? not sure what the head unit would deliver to them. I'm going to look around and see if i can get a good deal on an amp for them, and i'll see how that goes. Pretty sure it will solve my problem. If i was to purchase another amp, would i need another wiring kit, or is there another way around having to run a 3rd power cable down..?

[ryno_vrx]

check your amp first mine has a 2 rca outlets on it so i can run another amp off of it

[sycvs]

yea cheack first might save you a lot of mucking around

[sweefu]

There not getting too much bass, i'm running them on high pass, as with the fronts. Main problem i'm assuming is that the fronts are getting combined, 250 watts RMS. Then the rear's are only recieving somwhere between 10-20? not sure what the head unit would deliver to them. I'm going to look around and see if i can get a good deal on an amp for them, and i'll see how that goes. Pretty sure it will solve my problem. If i was to purchase another amp, would i need another wiring kit, or is there another way around having to run a 3rd power cable down..?

Are you running a distribution block at the moment mate? distro blocks often come with 4 outlets

[HCVP]

i dont have a distribution block, and the amp dosent have any outputs, only the single RCA input..

[ryno_vrx]

i dont have a distribution block, and the amp dosent have any outputs, only the single RCA input..

thats why i hate working with cheap-ist amps

[sweefu]

i dont have a distribution block, and the amp dosent have any outputs, only the single RCA input..

okay mate well you'll have to run a distro block provided your wiring is big enough to run two amps or more.. there is another thread on this at the moment there is alot of info in there

[bezz]

Am I missing something? Why not just fade to the front?

[HCVP]

Hey Bezz, long time no see. I've played around with the fader, but the sub also fades at the same time. Then i have to turn the bass up via the head unit, to increase the level coming from the sub. And then i have to run the HPF a little higher again otherwise the fronts will distort. It's only an issue at near full volume, for general listening it isn't a problem. But i just want to know that it's set up so that if i do blast it, i'm getting the most out of it. Im thinking of just getting a small 2 channel amp, under $100, of Ebay or something, and powering the rears. They will only get around 50-60 each, as oposed to the 125 each up front,so i don't think it will draw the sound stage away from me