Jump to content

transconductance amp


kevin gilmore
 Share

Recommended Posts

so tyll has been going crazy over the bakoon for planars.

well there are a lot of things i don't like about that amp, especially the battery power and distortion.

so here is something much better, tested last night at .06%thd, no feedback, output impedance 100k which is solely due to the servo...

http://gilmore.chem.northwestern.edu/currentsourceamp2.pdf

http://gilmore.chem.northwestern.edu/currentsourceamp2.zip

also testing curved traces:P

Link to comment
Share on other sites

4 hours ago, kevin gilmore said:

so tyll has been going crazy over the bakoon for planars.

Well, not really crazy about the Bakoon as much as I am intrigued by current source amps and how they might provide benefits over voltage amps. 

Glad to see you working on it, Kevin.  I'll get you those measurements you want within a day or two.

Link to comment
Share on other sites

  • 2 weeks later...

I built the CFA2 a while back and am very happy with it, its great for the HE-500 I have, and works really well with the loaner planars I've managed to test it with (PM2, LCD-X).

Guess I have to build this one as well and compare :)  Any major differences to be expected in performance?

 

 

Edited by MLA
Link to comment
Share on other sites

14 hours ago, UFN said:

Pics or it didn't happen! B)

 

//UFN

https://mightytext.net/zPRzoM

I have no privileges here to store Images and Google drive doesn't seem to work. so trying that  link...

Also on other site... under my profile are pictures, also not much to see as they are not pretty, but they do work.

I use an homemade CNC to route boards.

12 hours ago, MLA said:

I built the CFA2 a while back and am very happy with it, its great for the HE-500 I have,

 

 

I completely agree, Its a Great amp.

 

2 hours ago, spritzer said:

What's up with people thinking that any headphone amp will work at driving speakers?  Some will output sound but that's about it. 

Isn't it about output impedance / the dampening ratio? as well as wattage.....

My Firstwatt F5 headphone amp drives smaller speakers just fine. :cool:

Link to comment
Share on other sites

  • 2 weeks later...
On 12/24/2015 at 0:10 PM, GrindingThud said:

Ooo, looks like a great winTer project. :)

small size, very low parts count, very low heat output, very large sound....

looking forward to hearing what you think of it!

Its different than the CFP2, I like both a lot..

Edited by congo5
missing T
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...