Stewart Pinkerton wrote:

> On Fri, 30 Sep 2005 17:24:43 -0400, Jerry Avins <[email protected]> wrote:
>
>
>>Stewart Pinkerton wrote:

>>>Ahem, PWM isn't necessarily digital - remember the wonderful Sinclair
>>>X-10 amplifier from the mid '60s?
>>
>>No. please describe it.
>
>
> Class D amp using germanium small-signal transistors, rated at 10
> watts, actualy produced about 3 watts, rated at 0.1% THD at full power
> - unfortunately, those were switching artifacts which stayed at the
> same level regardless of output, so the whole thing sounded absolutely
> dreadful! Lasted for about a year on the market, and was followed by a
> whole slew of highly novel but ultimately trashy Sinclair products.
>
> Clive Sinclair (who didn't actually design the X-10) is a true
> innovative genius - who couldn't nail together two pieces of wood,
> never mind produce reliable electronic gear.

Was Uncle Clive based on Max Bialystock or vice-versa?

You can almost make out the X-10 circuit diagram here:
http://www.nvg.ntnu.no/sinclair/audio/x-10.htm

--
Eiron

I have no spirit to play with you; your dearth of judgment renders you
tedious - Ben Jonson.