Multiple Amps

[Beano]

At the risk of sounding like a total retard...

How can you run multiple amps off one head unit? I only have one RCA output from my head unit, and as far as I can tell you need an RCA input for both amps.

Is there a simple solution? And whats this "Speaker Level Input" stuff about on the back of my amp.

Somebody help me!! :?

Cheers in advance!
:D

[Fester]

can't find any pics!

You can get RCA splitters, in the same way that multiple plug sockets plug into the one in the wall then give you a bank of four, you can get two RCA outputs from one pair on the back of the head uni

[Jules]

Speaker level input - Sounds to me that's where you can run the amp off the speaker output from your HU rather than the RCAs (RCAs give better sound quailty though).

[Beano]

An RCA splitter sounds like the best option then. Do you reckon it would noticably degrade sound quality?

Can an RCA be used for any speaker, because i'm using it to run a sub, and im not sure that subs require a full range RCA input.

Whats the "Sub Out" that some head units offer?

Why is all this car audio stuff so damn confusing!? :?

[Jules]

To run an amp powering a sub will require both RCA just like any other amp would.
'Sub out' if it's a normal speaker connection I would guess is just a low frequency speaker output for subs only - try it.

[Beano]

At the moment, my amp that is is running the sub is set on "norm" filter. Will setting it to LP make a lot of difference?

Im wondering what sort of difference to expect when i play around with it after work tonight! :lol:

Then i'll try wiring my new amp into my 6 x 9s and then probly kill my battery! :lol:

oh well!

[srs1]

if you set up the amp with the sub running off it to lp (low passive filter) it will run the best sound frequencies for it. and hpf (high) for your 6x9's.

once in, alter your hetz range until the sub start to sound crap and then alter your power rate. after playing with these two setups you'll get the best sound quality from your amp to your speakers. dont forget to turn the volume to a decent level first, or you'll have to start again.

[Jules]

Pretty much what SRS said, Switch the amp to LP so the sub get's just the low (bass) frequencys, then set it up, but like SRS says make sure you have the HU turned up to the level that you'd normally listen to it.

[Beano]

Cheers guys! I'll try that ASAP.

[preston135]

if i were u i would buy a cheap little crossover ( u can get thease for about 20 quid ) i got 2 legacy ones from the US for 15 quid each and there brilliant! (note that thease splitters cost ???) this would enable you to put whatever frequency to your sub ( i know the ones on amps are a bit poo and dont give much control) u have seperate outs from the Xover and u can put whatever u want to whatever amp u want noty just high and low pass , but a selection of frequencys , fiddle around and see what sounds good,