Holger

Re: Preview: AOC51X
« Reply #100 on: June 22, 2011, 02:23:50 PM »
Jens, wanna hear it? I'd surely lend it out to you. Ping me...


strangeandbouncy

Re: Preview: AOC51X
« Reply #101 on: June 22, 2011, 02:30:47 PM »
Hi,



   just like to say it sounds great on those drumzzzzz . . .


    Kindest regards,



       ANdyP
. . . . RUH ROH . . . . .

Winetree

Re: Preview: AOC51X
« Reply #102 on: November 14, 2011, 12:01:15 PM »
Is it still alive?

[silent:arts]

Re: Preview: AOC51X
« Reply #103 on: November 14, 2011, 03:07:08 PM »
Is it still alive?

yes - but I need to do a new PCB design, adding a 470uF bipolar before the output transformer >:(
otherwise inrush current is too high, and / or the Pikatron output smokes the DOA ::)
don't expect this released this year, but I want to have it ready as soon as possible.

jensenmann

Re: Preview: AOC51X
« Reply #104 on: November 14, 2011, 03:18:15 PM »
Quote from: [silent:arts
yes - but I need to do a new PCB design, adding a 470uF bipolar before the output transformer >:(
otherwise inrush current is too high, and / or the Pikatron output smokes the DOA ::)
don't expect this released this year, but I want to have it ready as soon as possible.

That happened exactly today with Hogers AOC which he lent me for testing. The output tranny was >60deg when I realized what happened, I couldn´t even touch it. Maybe you put a 47Ohm resistor parallel to the 470uF (API stylee).
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

[silent:arts]

Re: Preview: AOC51X
« Reply #105 on: November 14, 2011, 03:26:50 PM »
argh - I told Holger about this weeks (months ?) ago >:(
I guess I will use Neumann style  :D

which DOA inside?
if it is analags "Hybrid" I will send you some replacement PCBs.

jensenmann

Re: Preview: AOC51X
« Reply #106 on: November 15, 2011, 03:00:44 AM »
Yes, it´s the Hybrid DOA. Could you send me the schematics with the board? Since it´s Holgers thingy I have no documentation.
After the the big smoke I was wondering where the BW limiting cap of the hybrid DOA is and why there´s nothing done to isolate capacitive load. The datasheat clearly says that there´s danger of oscillation at lower gain and offers several circuits for prevention.
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

Holger

Re: Preview: AOC51X
« Reply #107 on: November 15, 2011, 08:16:17 AM »
Oops...
Yeah, I remember that Volker once gave me the information about the capacitor, I simply forgot to implement. My bad...  ::)

[silent:arts]

Re: Preview: AOC51X
« Reply #108 on: November 15, 2011, 04:07:19 PM »
Oops...
Yeah, I remember that Volker once gave me the information about the capacitor, I simply forgot to implement. My bad...  ::)
;)

Yes, it´s the Hybrid DOA. Could you send me the schematics with the board? Since it´s Holgers thingy I have no documentation.
After the the big smoke I was wondering where the BW limiting cap of the hybrid DOA is and why there´s nothing done to isolate capacitive load. The datasheat clearly says that there´s danger of oscillation at lower gain and offers several circuits for prevention.
;) ;) ;)

I guess a bigger re-design is needed ... >:(

spase

Re: Preview: AOC51X
« Reply #109 on: December 04, 2011, 11:15:52 AM »
what have you done with this project silent :) how its goin?


[silent:arts]

Re: Preview: AOC51X
« Reply #110 on: December 04, 2011, 11:34:28 AM »
what have you done with this project silent :) how its goin?
I'm sure it will be released next year

mylesgm

Re: Preview: AOC51X
« Reply #111 on: November 09, 2012, 03:49:55 PM »
bump?  I'd love a pair of these to slot into my 51x...
Check my work at www.mylesmumford.com

[silent:arts]

Re: Preview: AOC51X
« Reply #112 on: November 10, 2012, 06:52:06 AM »
I will revisit this project once the K13117 and PMV70X are finished.

Ptownkid

Re: Preview: AOC51X
« Reply #113 on: November 10, 2012, 08:26:12 AM »
Ooooooh, and these new projects are what? Tease... ;)

[silent:arts]

Re: Preview: AOC51X
« Reply #114 on: November 10, 2012, 08:46:48 AM »
Ooooooh, and these new projects are what? Tease... ;)
you are not on facebook, aren't you  :o
neither on the german forum.

the K13117 is a pure class A mic pre designed by Darius Kubarth (Kubi)
no teaser here since I don't know if he wants to.

the PMV70X is the Neumann PMV70X PreAmp in 51X form factor.
no teaser since I need to sell some OV560 first to fund the project.

looking at the dates from this project, and the 5 years the Jensamp took, I do not tease anymore.
will report back once anything is finished and ready to go.

Ptownkid

Re: Preview: AOC51X
« Reply #115 on: November 10, 2012, 11:18:01 AM »
Totally understood...great things take time and life ALWAYS gets in the way.

Cheers

Toure14

Re: Preview: AOC51X
« Reply #116 on: September 01, 2013, 12:25:43 PM »
Any news on these compressors?

[silent:arts]

Re: Preview: AOC51X
« Reply #117 on: September 01, 2013, 03:13:39 PM »
no

Toure14

Re: Preview: AOC51X
« Reply #118 on: September 01, 2013, 06:02:49 PM »
Volker, 

Are they still in the pipeline or has it been scrapped?

Re: Preview: AOC51X
« Reply #119 on: October 11, 2013, 05:01:44 AM »
I would be in for one at least ;)


 

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