Post pics of your builds....
May 3, 2010 at 12:05 AM Post #6,871 of 9,804

Kerry

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Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif
Where did you source the pins?

I make the backer pieces (just made 2 yesterday), where I use some 5/8" rosewood (or whatever scrap I have in 7/8").

...



I sourced them from a group buy that Luvdunhill did not so long ago. I know that he has made a number of completed jacks that you might be able to source from him.

I was planning on just mounting them to a PCB and mount the PCB to the front chassis with some standoffs. If it needs more strength, I might sandwich the PCB between some FR4.

Quote:

Originally Posted by nattonrice /img/forum/go_quote.gif
So that's where all those connex pins that you bought went
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Great work~ They look fantastic!



Yes and thank you. I'm just very DIY and like to build as much as possible for my projects.
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May 3, 2010 at 5:55 AM Post #6,872 of 9,804

Spacehead

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Quote:

Originally Posted by Pageygeeza /img/forum/go_quote.gif
Ok, think I've got my head around it now. I'll need to know your power supply/virtual ground supply setup so I can put it onto the same board. Or I might be able to design it as a plug-in module.

Just one other thing, though this might be up for debate..... Which way round does the ground channel go? Going by current flow the input would be from the headphones, so it'll going the opposite direction to the channel amps themselves. Is this correct?



parallel with the battery is 470 uF capacitor then comes TLE2426

no it is not correct, ground channel input is from TLE2426 output
 
May 3, 2010 at 10:27 AM Post #6,873 of 9,804

Pageygeeza

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Think I may have not made myself very clear. I wasn't referring to the opamp, I was referring to the whole ground amp circuit. You have the input and output on the ground amp, I didn't mean change those. I meant where the inputs and outputs are coming from/going to. Basically the way I see it, the ground input to the circuit should be coming from the headphone and the output going back to the virtual ground.
 
May 3, 2010 at 9:04 PM Post #6,874 of 9,804

Spacehead

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Quote:

Originally Posted by Pageygeeza /img/forum/go_quote.gif
Think I may have not made myself very clear. I wasn't referring to the opamp, I was referring to the whole ground amp circuit. You have the input and output on the ground amp, I didn't mean change those. I meant where the inputs and outputs are coming from/going to. Basically the way I see it, the ground input to the circuit should be coming from the headphone and the output going back to the virtual ground.


You can think it as return channel too. Ground channel drives the ground wire.
 
May 4, 2010 at 6:05 PM Post #6,875 of 9,804

Ferrari

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With some parts from my parts bin, I have made this 3-channel amp yesterday.
It was a good perf-board exercise for me, and the amp works flawlessly from first power up, sounds very good without hum or hiss.
Some details: power supply based on LM317T, all electrolytic capacitors on board are Sikorel (~5500µF).
Opamps are AD843 biased into class A following by stacked BUF634.


Afbeelding742.jpg

Afbeelding741.jpg

Afbeelding740.jpg
 
May 4, 2010 at 6:37 PM Post #6,876 of 9,804

Voodoochile

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That's pretty elegant, Ferrari!
I like the AD843 well, though am not as much a fan of the BUF634.

Excellent for a parts project!
 
May 4, 2010 at 9:29 PM Post #6,879 of 9,804

immtbiker

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Nice and clean and effective. Just the way I like it.

Monk would be proud
icon10.gif
 
May 4, 2010 at 9:54 PM Post #6,880 of 9,804

JSTpt1022

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Quote:

Originally Posted by Pageygeeza /img/forum/go_quote.gif
Do we get and underneath shot?
wink.gif



I'd be interested in seeing that as well.
 
May 4, 2010 at 10:09 PM Post #6,881 of 9,804

Lil' Knight

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Quote:

Originally Posted by Ferrari /img/forum/go_quote.gif
With some parts from my parts bin, I have made this 3-channel amp yesterday.


Looks amazing. So clean.

It's funny that a couple pages back I saw an exactly opposite amp.
 
May 4, 2010 at 10:28 PM Post #6,882 of 9,804

vixr

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Quote:

Originally Posted by Lil' Knight /img/forum/go_quote.gif
Looks amazing. So clean.

It's funny that a couple pages back I saw an exactly opposite amp.



hahahahaaa!!! like night and day
 

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