[minivan]

in development phase.
read that he's aiming to surpass or equal the stax 717 in sound quality.
i asked him how much would the amp cost if it's in production, he said he's aiming to keep the cost at half the price of the stax amp.

 

[spritzer]

This is a text book ESP amp but I'm not so happy about the 12at7 there and the output caps but it could be a good budget amp if it stays under 700$. I can't see what pentodes are used for the last stage so do you have any info on it?

 

[Ricey20]

LD is really going on overdrive lately huh?

 

[minivan]

can't find any info on the pentodes, could be ECC83?

 

[fran]

12AT7 and EL84 it looks like to me.


Fran

 

[derekbmn]

Quote:

Originally Posted by minivan /img/forum/go_quote.gif can't find any info on the pentodes, could be ECC83?

Nope... the ECC83 (12ax7) is a triode.

 

[minivan]

i think i found the info about the pentode , it's ECL86

 

[derekbmn]

I think your right. Also known as 6cw5. It's supposed to be a pretty good tube.

 

[kevin gilmore]

input tube 12ax7
drive tube 12at7
output tube el86

Biggest question is voltage swing, what is the power
supply voltage for the output stage.

 

[spritzer]

The output would be EL86/6cw5 then and not ECL86/6GW8 as the latter is the same combo tube used in the Aristaeus and we would have one extra triode. It's a good tube but not capable of much voltage swing even when compared to the EL84.

 

[fran]

ECL86 has both a pentode and triode in the one envelope, basically half a EL84 and 12AX7 in one bottle.

Looks like its a EL86 then


Fran

 

[vcoheda]

little dot is going all out!

 

[minivan]

here's cut and paste from what mr yang posted. voltage swing is 500v p-p

初步测试:
输出摆幅：500Vp-p
开环放大倍数：1400倍
闭环放大倍数：1000倍
失真度：0.1% （输出100V rms 1KHz）
已经具备开声的条件，明天还要进一步优化调整。

 

[dgbiker1]

Is this a new prototype of the "soup can" amp we saw pictures of a bit ago? Looks very similar.

 

[Asr]

minivan, do you have an affiliation with Little Dot? Just curious.

Also no offense intended but that pic of the internals makes me even less likely to ever purchase a Little Dot amp. Where's the attention to layout?