"Signal" wrote in message
...
"Keith G" wrote:

Here's one of me when I wuz a little lad:

http://www.youtube.com/watch?v=qiMcY...elated&search=

Nice..

Here's a couple more youtubes..

Andy McKee making life hard for himself by playing a fairly simple
arrangement in an unorthodox manner..

http://www.youtube.com/watch?v=Ddn4M...elated&search=

Dominic Frasca making some sweet sounds. Again if you watch the
fretwork carefully there's a lot of hammering, but not as complex as
it first appears. Piece-a-cake.. lol

http://www.youtube.com/watch?v=r2BOA...elated&search=




Excellent!! :-)

Led straight onto a couple more good ones:

http://www.youtube.com/watch?v=ywahk...elated&search=

http://www.youtube.com/watch?v=-kwhk...elated&search=



OK.. one more. This one is truly special...
Shades of Roy Harper..

http://www.youtube.com/watch?v=Abndg...elated&search=



Yep, another good one! But enough - I'm off to sort out my 'headphone
turntable' now!!

http://www.apah69.dsl.pipex.com/show/BushArena.JPG


Amazing - just arrived, packed like crap (platter loose &c.) and still gets
through OK!!!

"Keith G" wrote


Yep, another good one! But enough - I'm off to sort out my 'headphone
turntable' now!!

http://www.apah69.dsl.pipex.com/show/BushArena.JPG


Amazing - just arrived, packed like crap (platter loose &c.) and still
gets through OK!!!



Incredible quality/robustness (L72 deck badged 'B55' for Bush Arena)** - I
gave it a good whiz with my finger as the Classic FM news started just now
and it took all of the news and weather, *all* of the following ads and well
into the first proper music track to spin down to a stop!!

'Made In Denmark' !!


** Whole thing for the price of just a new headshell and, say, a secondhand
strobe disk off eBay!! ;-)

On Thu, 1 Mar 2007 10:00:35 -0000, "Keith G"
wrote:


"Signal" wrote in message
.. .
"Keith G" wrote:

Here's one of me when I wuz a little lad:

http://www.youtube.com/watch?v=qiMcY...elated&search=

Nice..

Here's a couple more youtubes..

Andy McKee making life hard for himself by playing a fairly simple
arrangement in an unorthodox manner..

http://www.youtube.com/watch?v=Ddn4M...elated&search=

Dominic Frasca making some sweet sounds. Again if you watch the
fretwork carefully there's a lot of hammering, but not as complex as
it first appears. Piece-a-cake.. lol

http://www.youtube.com/watch?v=r2BOA...elated&search=




Excellent!! :-)

Led straight onto a couple more good ones:

http://www.youtube.com/watch?v=ywahk...elated&search=

http://www.youtube.com/watch?v=-kwhk...elated&search=



OK.. one more. This one is truly special...
Shades of Roy Harper..

http://www.youtube.com/watch?v=Abndg...elated&search=



Yep, another good one! But enough - I'm off to sort out my 'headphone
turntable' now!!

http://www.apah69.dsl.pipex.com/show/BushArena.JPG


Are you sure? Were I thee, I would use the least rumbly turntable I
could find for headphones, not one with it designed in.


Amazing - just arrived, packed like crap (platter loose &c.) and still gets
through OK!!!



Looks like it survived ok. What is the amp inside there? - and I
presume the bit with the meter is a tuner? And I'm guessing these
originally came complete with speakers.

d

--
Pearce Consulting
http://www.pearce.uk.com

"Don Pearce" wrote


Looks like it survived ok. What is the amp inside there?


No idea yet - there's a little handbook with it but no 'specs'. (I doubt
it's much more than 3 or 4 watt...??)


- and I
presume the bit with the meter is a tuner?



Yes and a 'Tape Replay' input also. The tuner (not tried yet) lights up and
the needle moves &c, so will probably work OK.


http://www.apah69.dsl.pipex.com/show/Buttons.JPG


And I'm guessing these
originally came complete with speakers.


Yes, speaker sockets on the back - I have only had a quick listen with
headphones so far (there's an output socket for them also) and it sounded
pretty diabolical, but these things only cost the price of a curry and, if
nothing else, this one is a cheap source of a complete 'spares list'
(including a nice, shiny platter) for my L72 if it can't be knocked back
into useful/useable life!!

(This is a bungalow - we have a large loft!! ;-)

Actually, the plan is/was to rip the deck out and plinth it up but I'm very
tempted to get it going as is - the original owner (back when ties were wide
and skirts were fabulously short?) would have been a very happy bunny, I
suspect!

:-)

In article , Don Pearce
wrote:
On Wed, 28 Feb 2007 04:14:49 GMT, "Ian Iveson"
wrote:


I think the interstage transformer is just the way phase splitting was
done when transistor amps used a pair of PNP output transistors and an
output transformer.

Yes. IIRC Various makers produced designs like that in the early/mid
1960's. Partly for the reason you give, but I suspect also because the
designers in those days tended to be accustomed to the idea of including
signal transformers in amplifiers.


It makes for very simple, if not terribly linear, biasing of the output
pair.

IIRC There were also problems due to the phase shifts introduced by
including a transformer.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

On Fri, 02 Mar 2007 09:39:18 +0000 (GMT), Jim Lesurf
wrote:

In article , Don Pearce
wrote:
On Wed, 28 Feb 2007 04:14:49 GMT, "Ian Iveson"
wrote:


I think the interstage transformer is just the way phase splitting was
done when transistor amps used a pair of PNP output transistors and an
output transformer.

Yes. IIRC Various makers produced designs like that in the early/mid
1960's. Partly for the reason you give, but I suspect also because the
designers in those days tended to be accustomed to the idea of including
signal transformers in amplifiers.

Also true, I think. Back then a transformer was just another component
on the shelf and not something you thought long and hard about.


It makes for very simple, if not terribly linear, biasing of the output
pair.

IIRC There were also problems due to the phase shifts introduced by
including a transformer.


Which wasn't terribly much of an issue for those amps with no global
NFB.

d

--
Pearce Consulting
http://www.pearce.uk.com

Jim and Don continued:

I think the interstage transformer is just the way phase splitting
was
done when transistor amps used a pair of PNP output transistors and
an
output transformer.

Yes. IIRC Various makers produced designs like that in the early/mid
1960's. Partly for the reason you give, but I suspect also because
the
designers in those days tended to be accustomed to the idea of
including
signal transformers in amplifiers.


It makes for very simple, if not terribly linear, biasing of the
output
pair.

IIRC There were also problems due to the phase shifts introduced by
including a transformer.

I see.

So, rather than being like a valve amplifier, it is a typical early
transistor amp?

Now you can continue to wonder why it sounds good.

I guess a layout can be misleading. It looks like the circuit is
symmetrical before the interstage. It would be interesting to know the
winding ratios of the transformers.

Ian

On Sat, 03 Mar 2007 21:28:45 GMT, "Ian Iveson"
wrote:

Jim and Don continued:

I think the interstage transformer is just the way phase splitting
was
done when transistor amps used a pair of PNP output transistors and
an
output transformer.

Yes. IIRC Various makers produced designs like that in the early/mid
1960's. Partly for the reason you give, but I suspect also because
the
designers in those days tended to be accustomed to the idea of
including
signal transformers in amplifiers.


It makes for very simple, if not terribly linear, biasing of the
output
pair.

IIRC There were also problems due to the phase shifts introduced by
including a transformer.

I see.

So, rather than being like a valve amplifier, it is a typical early
transistor amp?

Which was pretty much like a valve amp, because they were all we had
been designing up to then.

Now you can continue to wonder why it sounds good.

Remember we are talking good in the context of a guitar amp. Hi Fi it
ain't.

I guess a layout can be misleading. It looks like the circuit is
symmetrical before the interstage. It would be interesting to know the
winding ratios of the transformers.


Probably not far off 1:1. These transformers aren't transforming huge
impedance differences the way they do with valves. They are just there
to mess up the sound slightly.

d

--
Pearce Consulting
http://www.pearce.uk.com