Date   : Mon, 31 May 2004 14:14:13 +0100
From   : Tim Fardell <tim.fardell@...>
Subject: Re: [Electron] sound wave

Mike Tomlinson wrote:
> 
> In article <1085220280019553@...>, Thomas Harte
> <thomasharte@...> writes
> 
> >One of the programmers who was big back then had told me that they
> >pretty much all used
> >piezoelectric speakers back then, and I know for sure the Spectrum and IBM PC
> >did.
> 
> The Spectrum did, but genuine IBM PCs (and most clones) used real
> moving-magnet speakers.

Actually, the Spectrum had a "real" moving-coil speaker, with a 1-inch
diameter transparent plastic cone. It was the same sort of thing you
used to get (possibly still do?) in cheap headphones. 

I *think* the IBM PS/2 had a piezo squeaker, but I could be wrong.