......have recently purchased some speakers and a sub for my surround sound amp. I have noticed that the sub has usual speaker cable input whereas the amp has a single aux sub output, not speaker output.

Is anyone aware of an adapter?

Thanks

You need an amp for the sub-woofer. It's probably cheaper and easier to buy an active sub-woofer.

How many speaker terminals has the sub got?

If it has 8 then you can normally wire it up as part as the system. It will have 4 inputs and 4 outputs (pos/neg for each speaker)

You just take the wires from the front left/right speaker and connect them to the sub speaker inputs, you then connect some more speaker wire to the sub speaker outputs and connect them to the amp.
Last edited by TommyW : 05-04-2007 at 09:00

Brilliant thanks, yes the active sub seems the best option.

Just wondered why I couldn't hook the sub up with some sort of converter?!

I suppose in theory an amp would be the converter for a passive sub.

I would think speaker outputs/sub output (RCA) are two different signals. I would say all processing has be done when the signal reaches the speaker outputs, the rest is down to the speaker.

The mono signal that is associated with the RCA output for the sub normally goes to an amp to be processed, then passed on to the speaker output(s).

What speaker package have you got?

Are you sure there are no phono connections on the back of the sub, might be labelled in/out L/R, red and white in colour.

The sub-out is at pre-amp line level which means it will be barely audible. Therefore any 'conversion' device has to contain some form of amplification.

Great, that makes more sense.

Cheers

Daniel

Thats what my friends set up is and i say its the easiest to do with a active sub. He has a sony media amp controller which has the traditional five speakers connected and then a phono lead running to the sub which will then use its own amp and is a very good and easy setup. The only point is you have to remeber to turn the sub on and the volume control for the sub will be the actual volume control on the sub and for the rest of the speakers it will be using the main amp that they are linked too.

I remember one night i was there while he popped out and said i could put a film on and i only realised that the sub wasn't switched on half way through when there was some music and there was no bass!! but as soon as i turned it on phwooor did it sound good!!

So personally i reccomend the same that everyone else has and buy a active sub, its worth the extra for that little less hassle!!

Cheers
BWT1406