EL34 / KT66 SET

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Mike H
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#121

Post by Mike H »

And I'm going to bed! Nite all :D


Didn't want to be late either....
 
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pre65
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#122

Post by pre65 »

I know my "bass bins" are not quite right yet, but EL34 just gives too much bass for my likings.

Can anyone remember the details of an article that was to do with where to place the G3 connection on EL34's ?
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Mike H
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#123

Post by Mike H »

Ah yes, to ground it or not to ground it

I said grounding it was a load of hogwash. :!:


As a matter of interest, when we was using my Rocky at your place and we tried your EL34's, there was no G3 connection, ack-chewly. I had taken out the switch for it :shock:

Seemed to work alright though

 
 
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#124

Post by Mike H »

pre65 wrote:I know my "bass bins" are not quite right yet, but EL34 just gives too much bass for my likings.
Now that is interesting.

 
 
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#125

Post by pre65 »

Mike H wrote:Ah yes, to ground it or not to ground it

I said grounding it was a load of hogwash. :!:


As a matter of interest, when we was using my Rocky at your place and we tried your EL34's, there was no G3 connection, ack-chewly. I had taken out the switch for it :shock:

Seemed to work alright though

I forget who it was, but someone here had an EL34 amp with no G3 connection and when informed of his error, grounded G3 and was amazed at how much better it was.

Was it Ed ? Was it Bill or was it Ben ? :wink:
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ed
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#126

Post by ed »

certainly wasn't me.....

I remember publicising the grounded G3 loud and long after PB persuaded me to take it off the cathode

you might try and frame Bill or Ben for it
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#127

Post by pre65 »

ed wrote: I remember publicising the grounded G3 loud and long after PB persuaded me to take it off the cathode
Perhaps that's what I was remembering ?

Can you briefly elucidate on the finer details ?

Seems Bill and Ben are on the weed ! :wink: :lol: :lol: :lol:
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#128

Post by Mike H »

Lucky old Weed

 
 
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pre65
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#129

Post by pre65 »

Felt like doing something different today ! :wink:

I see you can get "wood kits" to personalise cars, so I've made one to personalise my amps. I wanted to raise them off the floor a wasp (bigger than a gnat :lol: ) and also have a fik wooden front.

This photo shows the wood in position but not actually secured yet.

Image
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#130

Post by Mike H »

Wood kits to personalize cars? Image


Where'd them from then?



 
 
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#131

Post by pre65 »

Mike H wrote:Wood kits to personalize cars? Image

Where'd them from then?

I suppose aluminium and carbon fibre are more in vogue for today's motorists. :wink:

http://www.walnutdashcompany.com/shop/i ... 40da70a741
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#132

Post by Mike H »

Oo-er!



 
 
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pre65
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#133

Post by pre65 »

These are the two monoblocks I'm resurrecting to drive the interstages for driving 833a.

They can, of course, also be used as everyday amps when used with the "big" Hammond OPT.

First job is to remake the circuit boards which are now FR2 glass fibre. I've drilled all the holes for the turret tags, and have now made a tool to rivet them on. One board is fully riveted now and the other one soon will be. :)
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#134

Post by pre65 »

Because the two halves of 6DN7 are directly coupled I need to raise the heater voltage by about 60v.

Now the KT66 cathode is at 60v, so can I tap into there for my 60v to the 6.3v winding centre tap, or would a potential divider be best ?
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#135

Post by Paul Barker »

yes, as long as you have a cathode bypass capacitor.
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