Looking for EL34 PP Schematic Amp ? at least 35Watt

[Audio_idiot]

Hi,
I feel that 300V is no safer then >1KV, they will kill any careless builder the same .... SS at +/-20V should be safe enough...

At 900++, still be able to get about 100W.

or, a pair of 6146 pentode will put out 100W at 600~700Watt..

When we go >15W, any tube will be consuming considerable amunt of filament power...

Power Efficiency? Definately not in tube's good book.....

Cheers

 

[calico88]

too much for the budget

cal

 

[ray_moth]

I feel that 300V is no safer then >1KV, they will kill any careless builder the same

I disagree. There is certainly no room for carelessness in building any vacuum tube gear and of course a 300v shock can be fatal. However, special materials and techniques are required for higher voltages like >1kv. Things you might 'get away with' at 300v could be disastrous at 1kv.

 

[richwalters]

Much better to settle for lowish B+ (250-300V) and use class A parallel pairs p-p.
This keeps inline using 400/450V electroytics.
Another consideration is test equip capable of handling exotic voltages. All expense.

 

[navin]

many moons ago there was a thread called EL34 Schematic Confusion there are a buch of schematics posted there, here is the link

http://www.diyaudio.com/forums/showthread.php?s=&threadid=69042&highlight=