GM70 Justification

Greg · Post by **Greg** » Sat Aug 03, 2013 11:01 pm

Yep, you're probably right

pre65 · Post by **pre65** » Sat Aug 03, 2013 11:05 pm

Greg wrote:What would William Blake say to that?

To see a world in a grain of sand,
And a heaven in a wild flower,
Hold infinity in the palm of your hand
And eternity in an hour.

Greg · Post by **Greg** » Sat Aug 03, 2013 11:18 pm

pre65 wrote:To see a world in a grain of sand,

Nope, that's transistors

ed · Post by ed » Sun Aug 04, 2013 8:11 am

Greg wrote:
pre65 wrote:To see a world in a grain of sand,
Nope, that's transistors

it worked for me!

Paul Barker · Post by **Paul Barker** » Sun Aug 04, 2013 8:33 am

ed wrote:
Greg wrote:
pre65 wrote:To see a world in a grain of sand,
Nope, that's transistors

it worked for me!

Was the original poet talking of glass? So valve is closer than semiconductor.

IslandPink · Post by **IslandPink** » Thu Aug 15, 2013 8:46 pm

Just emailed Bud Purvine to make a pair of output transformers for me.
There's a small window of opportunity ahead of a batch run on vacuum-potting in September.

They will be ( pending confirmation ) -
M3 , 33-gauge lams, 'Level 2' quality ( Bud's designation )
7K to 8R and hopefully 4R too .
About 40 to 45H
90mA standing current
Sufficient for 10-12 Watts .

With a bit of luck I should be able to demo them at Owston .
Not sure if I'll be running GM70 , given the likely 480V supply, might be GK-71 at that stage .

IslandPink · Post by **IslandPink** » Tue Oct 08, 2013 11:00 pm

Looks like ETA of the transformers will be after Owston . I have a cunning plan to do something else in the meantime .

IslandPink · Post by **IslandPink** » Fri Oct 18, 2013 8:18 pm

Woww !
Steel plates are out there too :
http://www.diyaudio.com/forums/tubes-va ... amp-4.html

..or so they say .

IslandPink · Post by **IslandPink** » Wed Dec 04, 2013 8:10 pm

Bud Purvine transformers on the way across now ...

IslandPink · Post by **IslandPink** » Wed Dec 11, 2013 9:44 pm

Oooh !
Late parcel delivery ( neighbour ) .
O-Netics

must get my penknife .....
Yum yum yum !

simon · Post by **simon** » Wed Dec 11, 2013 10:29 pm

I'd love to know how these sound Mark

. Which level did you go for?

IslandPink · Post by **IslandPink** » Wed Dec 11, 2013 10:42 pm

Level 2, I think !
They are quite big & heavy ....
Pic tomorrow .

simon · Post by **simon** » Wed Dec 11, 2013 10:57 pm

Yum yum

IslandPink · Post by **IslandPink** » Fri Dec 13, 2013 11:17 am

Transformers with small table for scale :

Dave the bass · Post by **Dave the bass** » Fri Dec 13, 2013 11:24 am

They look rubbish.

I'll take 'em off yer hands for £20 if y'like....

Heheheheheheheheheheeh (etc)

DTB

audio-talk

GM70 Justification

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