2 Amps.. How?

[tr3nt]

I have a Panasonic motorised head unit, with the RCA's running to a 4CH amp via 2 splitters.. I want to add my Clarion 200W 2CH Amp, for rear speakers, so I can get a bit more out of them..

Is this possible?

[HoZy]

How many pre-outs does your Headunit have?

Cheers
MaT

I run 2 amps, an will soon be running 3 when I'm not lazy an install rest of my system..

[tr3nt]

2 out I think! L and R outs? it has plugs for an AUX - being a TV or something.
http://panasonic.com.au/products/det...?objectID=2838

Just bear in mind, that the TWO outputs (front/rear? left/right?) are both being used, by splitters, so each of the 4 channels on the amp are used!

[garfa]

I have a Panasonic motorised head unit, with the RCA's running to a 4CH amp via 2 splitters.. I want to add my Clarion 200W 2CH Amp, for rear speakers, so I can get a bit more out of them..

Is this possible?

why wil you get more out of the speakers if you used the clarion amp?

[semi]

my guess is that the 4ch powers a sub and fronts, and he wants to amp the rears?? correct or not??

[StoneX]

Just split the RCA's again. You won't be able to adjust anything independently, but you'll have sound. Your next purchase should be a head unit with 3 sets of RCA's

[calais_cruzin]

most amps have 2x rca's for line out on the amp so all u do is run another set of rca leads n 2 more splitters to the 4ch
Or do wat stoneX said n get a better headunit with front L/R rear L/R Sub L/R
That will fix ur problem

[tr3nt]

my guess is that the 4ch powers a sub and fronts, and he wants to amp the rears?? correct or not??

4CH powers the two subs, it's bridged.
- on CH 1
+ on CH 2
- on CH 3
+ on CH 4

[garfa]

most amps have 2x rca's for line out on the amp so all u do is run another set of rca leads n 2 more splitters to the 4ch
Or do wat stoneX said n get a better headunit with front L/R rear L/R Sub L/R
That will fix ur problem

better h/u. is tyhe first and best fix.
after that use a set of splitters!

[semi]

so you arent amping the front speakers?? Id amp them before you amp the rears

[tr3nt]

garfa: I just got a new h/u. Has all the bells whistles.. mp3/wma/motorised.. etc..

[garfa]

ok, you said that you are running your 4 ch amp and are splitting the rca left into the front left and rear left inputs of the amp and splitting the right rca into the front right and rear right inputs to the amp.
so, is it fair to assume that you have only 2 rca sockets on the back of the h/u? (left and right, 1 pair.)
now off that 4 ch amp you are running your front drivers off channels 1 and 2. and have the sub bridged between channels 3/4?
the rear speakers are running off the h/u internal amp?
now if you have another amp connected you will need to split the signal 3 ways, correct? now if this is done it will make it so the only way to level match (make the volumes of each set of drivers suited to each other) is by using the gains of the amps. also the signal will be split 3 ways hence will be 3 times weaker and 3 times more sensitive to any noise in the system.
if all of the questions i asked above are correct then you would be better off just buying a h/u with 3 pairs of preouts.
but really the rear speakers will sound better amplified BUT will you notice any huge difference? not really...
if you are set on having the rears amplified then if would be better for the SQ of the system (dynamic head room and all that jazz) if the sub was moved to the 2 channel amp (provided that the 2 channel has enough power for it) and the speakers run off 4 ch amp.

[tr3nt]

ok, you said that you are running your 4 ch amp and are splitting the rca left into the front left and rear left inputs of the amp and splitting the right rca into the front right and rear right inputs to the amp.
so, is it fair to assume that you have only 2 rca sockets on the back of the h/u? (left and right, 1 pair.)
now off that 4 ch amp you are running your front drivers off channels 1 and 2. and have the sub bridged between channels 3/4?
the rear speakers are running off the h/u internal amp?
now if you have another amp connected you will need to split the signal 3 ways, correct? now if this is done it will make it so the only way to level match (make the volumes of each set of drivers suited to each other) is by using the gains of the amps. also the signal will be split 3 ways hence will be 3 times weaker and 3 times more sensitive to any noise in the system.
if all of the questions i asked above are correct then you would be better off just buying a h/u with 3 pairs of preouts.
but really the rear speakers will sound better amplified BUT will you notice any huge difference? not really...
if you are set on having the rears amplified then if would be better for the SQ of the system (dynamic head room and all that jazz) if the sub was moved to the 2 channel amp (provided that the 2 channel has enough power for it) and the speakers run off 4 ch amp.

Thats correct, 2 RCA plugs, split into the amp. Now, the way I have the amp, is bridged like this:
Sub 1: - CH1
Sub 1: +CH 2

Sub 2: -CH3
Sub 2: +CH4

is that right, or wrong?

[garfa]

hang on... so your front speakers are not amplified at all?

[tr3nt]

no. the only speakers that are amplified are the subs!

[garfa]

well why in the hell do you want to amplify the rears over the fronts?

[tr3nt]

garfa: low and behold, im not the smartest there are with car sound, I thought it was a good idea to have the rears amped, and the fronts non amped. Obviously im wrong!

[garfa]

sorry mate i didnt mean that in a nasty and belittling tone. sorry.
generally you will be better off amping the fronts before the rears. the rears need to travel further and you will notice a heap more diffence if you do the fronts.
like i have said, because you will be splitting the signal 3 ways (the amps dont have "pass through" rcas do they? have a look in the manuals.
if they do they its all good, but if not then the signal will be compromised and therefore i would personally think if you want to get your speakers amped a new h/u with more preouts OR a line driver/xover. the line driver/cross over will boost the signal up once it leaves the h/u but both options will require money and about the same so i would go with the new h/u.
depends how happy you are with the speakers and their performance at the moment...

[semi]

Surely splitting the RCA's 3 ways shouldnt make such a huge difference?? Theyre still going to have the same voltage however many times you split them, and the current needed for a MOSFET transistor's base is pretty tiny, so current doesnt really matter

[garfa]

i just cant see how splitting them 3 ways is a good thing! (i am not concerned about the current supplied to the tranny base just how much more noice the line will pick up...)

[StoneX]

Splitting 3 ways is fine. There are people who claim otherwise but i've heard it for myself and it seems fine. But having no adjustability between front, rear, and sub is very annoying.