Ron wrote:
jakdedert wrote:
Ron wrote:
Meat Plow wrote:
On Wed, 7 Jan 2009 18:41:09 -0000, "Arfa Daily"
wrote:

A few weeks ago, I was looking for a schematic for a PA amp, and
called it a "head" on here. I got told that it wasn't a head,
because it had a preamp in it, and a head has only line level inputs.

Today, I was looking on the site where I get all my Marshall info -

http://www.drtube.com/marshall.htm#M2000

- for schematics for a 2195, which is a guitar amplifier with a
preamp in it. Interestingly, that site calls this amplifier - and
indeed anything that is not a "combo" - a head ...

So now I won't feel so wrong continuing to call these amps heads,
as the muso who owns the shop where I get most of this work from
does too, and has for as many long years as I have known him.

Arfa

Been working on amp "heads" for 30 years. I've never nor have any of
my associates been picky enough to discriminate them as you've
described.

I reckon someone got confuzzled betwixt 'head' and 'slave'

Ron

That's a term I've not heard in this context for years. Yeah, there
used to be these PA heads, for which you could also purchase identical
boxes that were termed 'slaves'. They had only contained a power amp.

'Invented' as I understand it by Charlie Watkins back in the swinging
60`s Tho it was quite commom for the preamp and power amp sections of
commercial 'cinema' amps to be separate way way back


I'd forgotten about them; but the original complainer apparently
didn't, but got the terminology backwards. Seems I recall these also
described as 'slave heads', which would also negate the original
complaint, though.

I expect the most common, certainly in the UK would be the H-H MA100 and
SA100 from the early 70`s

Ron

I had in mind various offerings from Sunn, Kustom and Peavey; but those
were the US offerings.

jak