I have a sony boombox, not sure about the specific model but I'm really asking if this is feasable in concept not for my specific box. Anyway, I want to try and mod my box to support a detachable subwoofer. I'm not talking about a 8" or 10" or 12" subwoofer you would see in a car, I'm talking about a small, 4"-5" sub in an enclosure from a 2.1 stereo for a computer. What I want to do is wire the headphone jack so when something is plugged into it sound still comes out of the speakers, then attach a 3.5mm jack to the sub to get some extra bass. My box already has good bass, but the problem is once turned up past a certain level, the bass must be reduced or extreme distortion ensues. The idea is that I can pop the sub woofer in for some extra bass for a semi portable box (like if I'm taking it to a friends house or cook out, etc.) or unplug the woofer and use it as a normal box. The sub would probably have to be passive and run off of the boxes juice, or be powered by it's own set of batteries.

Any insight would be greatly appreciated. Is this possible? been done? to what success?

thanks in advance.

EDIT: My box has speakers that can detach from the box and are attached via speaker wire. The impedance is 3.2 ohms. alternatively, could I wire a passive sub to these and then the speakers to the sub?

what model is your sony

The problem is that you need an output specifically designed to send low frequencies only. Regular outputs are designed to send ALL frequencies.

it is nothing special, I got it for free...

it's a cfs-1035, heres a picture...http://img246.imageshack.us/img246/8375/1001509.jpg

I'm thinking that the most simple way to accomplish this is to get a small subwoofer and wire it like so

Boombox speaker wire outputs>subwoofer>two speakers.

The question is, where can I get a small passive subwoofer like that? Also, to if any of you are techies, what can I do about the impedance? I was also considering wiring up a pair of tower speakers to the outputs as an alternative, but they are 8ohms, and the box puts out 3.2 ohms, so wouldn't the sound be over 2x quieter than normal? Could this be easily remedied by running an ipod through a headphone amp and then to the aux. input to boost the signal? or would that send too strong of a signal to the receiver and cause distortion?

I don't think the radio's amp would drive a sub and the regular speakers very well.