Ahh yes, ILP modules... that sure brings back memories of the days when I
had more hair and reading Everyday Electronics magazine. It is now "EPE", I understand. I would have bought a few in the whole line if funds permitted then, but student pocket money was never going to be adequate.
The first diy amplifier I made used a plastic molded part instead of the potted one, with the venerable LM380. It made a nice racket with the crystal set and transistor radio, with an open-baffled, paper-cone Sanyo speaker :)
Alan wrote :
"I was rooting around in the garage this morning and I found what is surely the last word in 'integration'.
ILP, a British company, took an audio amplifier idea not dissimilar to the kit (previous posts) and potted it into a cavity in an enlarged die-cast heat sink. That means, after they tested the assembled circuit board, they poured a thermo-setting epoxy over it to completely seal it from the atmosphere. So what we have here is an even more highly 'integrated' power amplifier. I'm not sure if it's still available, but I believe that they sold tens of thousands of these over the years. We considered using some in active speakers but the heat sink protruded too far from the back panel of the speaker and would have been damaged in transit or use."