Connecting sub to amp...

[Shady Pioneer]

Does the sub get it's power from the amp it's connected to?

So if I buy a 4 channel amp, split it 3 ways (2 front speakers + 1 sub), all I have to do it connect the sub to the amp and no more wiring for the sub?

[S11EPS]

A subwoofer is no different to any other speaker, it is just optimised for playing low notes.
Therefore it doesn't need 'power', just a signal, exactly the same as any other speaker.
So, wire up your amplifier with a permanent live, quality earth and remote (to switch the amp on and off) and then connect your speakers (including the subwoofer) in the normal fashion.
I'll happily draw you a wiring diagram if you need it - any help you need, give me a shout

[dan23]

heres a diagram for you

[boneybradley]

The only problem i can see is unless you can seperate the signals the sub will get high notes like the fronts... i would get a small 2 way amp for the fronts and another for the sub.. mine uses a 2x50w rms for the fronts and a 1x400w rms which is bridged for the sub with a single live feed and seperate rca's

[S11EPS]

The only problem i can see is unless you can seperate the signals the sub will get high notes like the fronts... i would get a small 2 way amp for the fronts and another for the sub.. mine uses a 2x50w rms for the fronts and a 1x400w rms which is bridged for the sub with a single live feed and seperate rca's

Most 4 channel amplifiers have filters in them, as running them in tri-mode (i.e. powering a pair of components using two channels and bridging another pair for the sub) is quite common.
As such, it's likely the amplifier will have an adjustable low pass filter for the two bridgeable channels that power the sub.
If not, then he'll need to run and inductor, which will do the same job and allow him to use the equipment he has.

[Shady Pioneer]

Thanks for the help guys.

I was thinking of this amp:

http://www.caraudiocentre.co.uk/product_m-jbl-gto-75-4_p-21965.htm

and this sub:

http://www.caraudiocentre.co.uk/product_m-kenwood-kfc-w3011-bx12p_p-23111.htm

Opinions? I've got about £160 for both.

[dan23]

yeah they aint bad amps the JBL's, but there are sub and amp deals for around £150, just hunt around

[Shady Pioneer]

Yeah it's just all sub and amp deals I've seen around that price are only 2 channel amps 

However I've come up with a plan, I recently bought a pair of Juice (in phase) component speakers, sounded like a good deal but when it came to installing them, a tweeter blown and they are crap (I know they aren't amped yet but they should sound better than what they are).

So basically the place I bought them from I'm gonna moan at tomorrow, until they allow me to swap them round for a pair of Infinity Kappa components which should be far loads better, then buy an Infinity 4 channel amp I've seen for £99.99 and the Infinity sub which is £59.99.

Thought I may as well shell out a little more money seeing as I know from experience Infinity are really good especially for the money.

[dan23]

yeah infinity are a good brand, so is fusion (value for money) and also JBL are good value for money

[Shady Pioneer]

Am I also correct in thinking that only the remote cable needs to be connected to the head unit then?

So the front speakers I connect this amp to just need to be connected to the amp?