[silent:arts]

GDIY51X Headphone amplifier
« on: June 16, 2013, 09:53:54 AM »
Since we have an interesting discussion on facebook right now:
what features would you like?

So far we have volume control only ...


Re: GDIY51X Headphone amplifier
« Reply #1 on: June 16, 2013, 10:41:12 AM »
Would it be Mono (single slot?), Stereo and/or linkable?

How about a little talkback option?  When I'm setting preamp levels the talkback button is *all the way over there*  ;)

This would be a cool addition, good work!

Ian
 8)


[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #2 on: June 16, 2013, 11:25:17 AM »
Single Slot. We use the Output for an Input.
No connector left for an talkback input.

Re: GDIY51X Headphone amplifier
« Reply #3 on: June 16, 2013, 12:58:23 PM »
I/O jacks - nicely done makes sense.

How about an aux input on the front?  Could be used for additional signal injection and/or talkback - maybe switch-able?  ;)






100WChris

Re: GDIY51X Headphone amplifier
« Reply #4 on: June 16, 2013, 01:52:27 PM »
Hi Volker!
Linkwitz-crossfeed?
Chris

bernbrue

Re: GDIY51X Headphone amplifier
« Reply #5 on: June 16, 2013, 02:39:19 PM »
A few LEDs indicating input level would be nice.
regards
Bernd

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #6 on: June 22, 2013, 06:29:15 AM »
Ok, decided to do the inputs and main amplifier on one PCB, headphone jacks controls on another.
(just to have them all centered at the front panel etc).

one more advantage: we can do different sub PCBs, for future features like mono or crossfeed etc.
I took care to distribute all 16V and 24V voltages to the sub-PCB.

the first one just has volume control and clip LED, and two headphone outputs.
I don't need more at the moment.

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #7 on: July 02, 2013, 05:49:47 AM »
ordered some prototype PCBs  8)

rob_gould

Re: GDIY51X Headphone amplifier
« Reply #8 on: July 03, 2013, 09:36:59 AM »

I could do with this.  Please count me in.

What's the Facebook page where this discussion is happening?  Or is it a secret?!

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #9 on: July 03, 2013, 12:34:13 PM »
Nothing secret.

Be a friend on facebook with me:
http://www.facebook.com/volker.mayer.51x


[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #10 on: July 10, 2013, 07:04:00 AM »
Ok, PCBs should arrive soon, and I already have two trusted Beta-Testers.

Now for the "Artist-Edition":

how would you do the Mono-Switch?
Pros and Contras for MONO1 vs MONO2?

culteousness1

Re: GDIY51X Headphone amplifier
« Reply #11 on: July 10, 2013, 11:21:23 AM »
I would prefer Version 2 since it's passive and simple  8)
"What's all this analog stuff anyhow?" - Bob Pease
"My favorite programming language is ... solder." - Bob Pease

kante1603

Re: GDIY51X Headphone amplifier
« Reply #12 on: July 10, 2013, 04:07:44 PM »
I would prefer Version 2 since it's passive and simple  8)
Agreed,often done this way. ;)

Best,

Udo.

rob_gould

Re: GDIY51X Headphone amplifier
« Reply #13 on: July 23, 2013, 01:45:11 AM »

Hi s:a - how are the prototypes coming along?

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #14 on: July 23, 2013, 03:31:36 AM »
Hi Rob,

the PCBs are here, and today I'm awaiting the parts I ordered from the online Reichelt BOM Udo was kind enough to do.
don't know if I find time soldering today, but will have time over the weekend.

culteousness1

Re: GDIY51X Headphone amplifier
« Reply #15 on: July 23, 2013, 05:09:22 AM »
Hi Rob,

the PCBs are here, and today I'm awaiting the parts I ordered from the online Reichelt BOM Udo was kind enough to do.
don't know if I find time soldering today, but will have time over the weekend.

Volker,

if you need any prototype builder or tester, I would be happy to help!
Right now I have plenty of time as there are Semesterferien  8)

Best,
Carsten
"What's all this analog stuff anyhow?" - Bob Pease
"My favorite programming language is ... solder." - Bob Pease

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #16 on: July 23, 2013, 05:21:42 AM »
Cool Carsten!

culteousness1

Re: GDIY51X Headphone amplifier
« Reply #17 on: July 23, 2013, 05:52:23 AM »
I just checked Udo's Reichelt Cart. Seems like it's missing some sort of headers/Sockelleisten to interconnect both PCBs.

Or what was the plan how to connect the boards?
"What's all this analog stuff anyhow?" - Bob Pease
"My favorite programming language is ... solder." - Bob Pease

kante1603

Re: GDIY51X Headphone amplifier
« Reply #18 on: July 23, 2013, 06:01:27 AM »
I just checked Udo's Reichelt Cart. Seems like it's missing some sort of headers/Sockelleisten to interconnect both PCBs.

Or what was the plan how to connect the boards?
Hi Carsten,

it's "Stiftleisten"in the bom.

Best,

Udo.

[silent:arts]

Re: GDIY51X Headphone amplifier
« Reply #19 on: July 23, 2013, 06:05:30 AM »
I want to have the potentiometer and headphone sockets in the middle of the faceplate.
not doable with sockets like the PCB is (too narrow together).
not doable with a mirrored daughter PCB (too wide for standard headers / sockets).
so we just use the header pins and solder the PCBs together.


 

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