"James" wrote in message
...
hi!
I've got a sony CDX-M730 in my (old style) 3 door Corsa and wanna install
a
sub. I've never done it before and don't really understand. do I *need* an
amp? I don't really wanna have to install one if I can help it. is there
an
easy way to just buy a sub, connect it to the two mono connectors on the
back of the stereo, run a wire to the boot and just leave it there? hope
I've not rambled too much, but I don't really know what I'm asking about /
doing when it comes to subs.

You will need an amp of some sort, yes. You can, however, buy "active" subs
which come with the amp built in.
If you bought an active sub you'd need to run RCAs to the boot (tyo carry
the signal from the back of the headunit) and a power feed. You'll most
likely also have to run a "remote on" cable, which makes the amp turn on
when the h/u is turned on. Best source for all these things is an "amp
wiring kit" as sold by all car audio shops, maplin, etc.