[v3nom]

oops, double post

 

[pinkfloyd4ever]

Quote:

Originally Posted by v3nom /img/forum/go_quote.gif which pins on the pot correspond to what?

I just looked at pete's pic of the inside of his Starving Student hybrid. Click it for a bigger view

 

[v3nom]

cool, thanks

 

[mattcalf]

Any Australian builders/people looking for tubes look here!

 

[smeggy]

Finally got mine back to where it should be after using small caps for the output. Now it has a big pair

Woo, now it has bass and body!

 

[smeggy]

Ok, got a quick question for the gurus.

How detremental is it to run a SS at full tilt for extended periods?

I have some very inefficient phones that are barely reaching listenable even at full volume, so is this damaging to the amp running like this or is it fine

 

[n_maher]

I think you'd be alright if you just watch the heatsink temps and if possible check the junction temperature (where the FET meets the heatsink). Provided you keep both of those within spec I can't see a reason why it'd be a problem.

 

[smeggy]

Cool, mine does have a honking big heatsink as you know and I can rest my hand on it for a good while before it gets uncomfortable.

 

[Hayduke]

I think Nate is advising to make sure that the heat is transfering well from the FET to the heatsink. What did you use in between them? If you're sure there is good thermal transfer and you can leave your hand on the heatsink, then you are probably fine.

 

[looser101]

Quote:

Originally Posted by smeggy /img/forum/go_quote.gif Ok, got a quick question for the gurus. How detremental is it to run a SS at full tilt for extended periods? I have some very inefficient phones that are barely reaching listenable even at full volume, so is this damaging to the amp running like this or is it fine

Apparently you need to build a balanced SS for those headphones.

 

[smeggy]

hehe, balance SS you say... Hmmm

yeah the heatsinks have the pad and thermal grease and are well bolted to the sink so it should be fine. If it blows I'll just replace some parts

Very nice since I replaced the tiny caps.

 

[dsavitsk]

Quote:

Originally Posted by smeggy /img/forum/go_quote.gif How detremental is it to run a SS at full tilt for extended periods?

Instantaneous current draw varies, but average current draw is constant -- i.e., the amp runs in deep class A -- so signal or no signal, full tilt or no tilt, the "wear" on the amp is the same.

By the way, add a bypass cap to Rk to increase gain. If you need more, add a CCS load to the tube.

 

[smeggy]

great news, I thought so but wanted to make sure.

 

[tamasic1]

Quote:

Originally Posted by smeggy /img/forum/go_quote.gif How detremental is it to run a SS at full tilt for extended periods?

I'll let you know. That's the only way old rockers like me can listen to anything.

Larry the Tube Guy says : Getter Done!

 

[smeggy]

Yeah, I'm blasting my ears off with Rammstein on 30+ year old isodynamics