I designed this mini speaker kit. It is a little speaker that quite conveniently fits a 6hp panel quite well. It may not be obvious but it's not going to rain down beautiful lush tones on your ears. Its more of a little hacky reference monitor, a bit like what you would find on the 2600 or a Wasp.
All source files and where you can buy full kits are available here
http://clacktronics.co.uk/euroclack/mini-speaker_kit/ br> br>