[Kerry]

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 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.

 

[Spacehead]

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

 

[Pageygeeza]

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.

 

[Spacehead]

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.

 

[Ferrari]

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.

 

[Voodoochile]

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!

 

[the_equalizer]

Wow... such a nice clean build ! (as usual for Ferrari).

 

[Pageygeeza]

Nice stuff Ferrari, very clean and tidy.

Do we get and underneath shot?

 

[immtbiker]

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

Monk would be proud

 

[JSTpt1022]

Quote:

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

I'd be interested in seeing that as well.

 

[Lil' Knight]

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.

 

[vixr]

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

 

[johnwmclean]

I love that “parts bin”, it just keeps giving. Beautiful work Ferrari.

 

[Pageygeeza]

Quote:

Originally Posted by johnwmclean /img/forum/go_quote.gif I love that “parts bin”, it just keeps giving. Beautiful work Ferrari.

Was thinking that myself, it's one awesome "parts bin". I want one!

 

[T.B.N.]

Quote:

Originally Posted by JSTpt1022 /img/forum/go_quote.gif I'd be interested in seeing that as well.

I'll third that, I would love to see the underside!