ChrioN

Re: D-AOC PCBs - the building and help Thread
« Reply #760 on: April 12, 2010, 08:21:24 AM »
[silent:arts]: Did you ever measure the slope with dual vactrols?
"All PCB traces are curved to emulate the electrical response of point-to-point wiring" -Drip


[silent:arts]

Re: D-AOC PCBs - the building and help Thread
« Reply #761 on: April 12, 2010, 09:09:41 AM »
searched my harddrive, and yes, I did:



note: the label KUBI Mod is wrong. this is not his full mod, only the antiparallel vactrols

ilfungo

Re: D-AOC PCBs - the building and help Thread
« Reply #762 on: April 13, 2010, 02:21:06 PM »
Where I can found Edcor transformer in Europe?
Thanks

rob_gould

Re: D-AOC PCBs - the building and help Thread
« Reply #763 on: April 13, 2010, 02:29:31 PM »
Where I can found Edcor transformer in Europe?
Thanks

search the PM660 thread.  There was a bloke in Belgium who I think was called Tony dB who was selling them.

Can't remember any more details than that I am afraid - sorry

Edit : here you go : http://www.groupdiy.com/index.php?action=profile;u=107 :)
« Last Edit: April 13, 2010, 02:43:43 PM by rob_gould »

tommypiper

Re: D-AOC PCBs - the building and help Thread
« Reply #764 on: April 13, 2010, 03:05:29 PM »
Where I can found Edcor transformer in Europe?
Thanks

I have some extras I might sell.  But I'm in US.  You could also buy direct from Edcor in US I suppose.  I might have more flexible shipping options than they might...  PM me if you're interested.
Imagine a wet, slightly chilled from its gas release and decompression, with water droplets condensing, sucking surface tension, slowly sliding down the side, capped by a healthy virgin froth on top..

flight

Re: D-AOC PCBs - the building and help Thread
« Reply #765 on: April 13, 2010, 04:57:08 PM »
HI All ,
I Finally post unit finished !  :D
Lundhall LL1540 as input and something called edcor as output ! :P

i know i know next time i make engraved panel !



I wanted to know if someone can help me in the Vu meter GR balistic !
I ve change R126 as explain to 100K variable and i ve try to set the vu meter with compression but it seems its totally impossible to set really something linear . ( i got a resistance too at Vu metre Input as mod explain there )
i ve try different way and the best i ve found was to set - 5DB and the -10 DB to 0Vu  and readjust ... i finally got something that seems to be not Bad ...but not really linear in fact  ( after 12 db compression hard hard to see anything more )
So i wanted to Know if someone can explain a way to make it a real GR mode starting to 0Vu and going Down with compression   ( i ve some picture of daoc making it no ?? )
Thanks
« Last Edit: April 13, 2010, 05:10:47 PM by flight »

ilfungo

Re: D-AOC PCBs - the building and help Thread
« Reply #766 on: April 15, 2010, 07:53:05 AM »
can anyone tell me how to order transformers from the  EDCOR site?
I tried to write the mail but no answers ....
What other low-cost transformer could use?
thanks ...
« Last Edit: April 15, 2010, 08:13:38 AM by ilfungo »

[silent:arts]

Re: D-AOC PCBs - the building and help Thread
« Reply #767 on: April 15, 2010, 12:51:23 PM »
I Finally post unit finished !  :D
nice ;D ;D ;D
we always like fotos of finished DIY :D

this one is yours:


for the meters, read SSLtechs LA2A calibration instruction.
the metering circuit is exactly the same.

babyhead

Re: D-AOC PCBs - the building and help Thread
« Reply #768 on: April 15, 2010, 03:27:45 PM »
Does anyone know how much gain this beast has fully opened up?

ilfungo

Re: D-AOC PCBs - the building and help Thread
« Reply #769 on: April 16, 2010, 08:02:53 AM »
hello
anyone has an example of the front panel FPD?
Thanks


nashkato

Re: D-AOC PCBs - the building and help Thread
« Reply #770 on: April 17, 2010, 06:59:39 AM »
finished my daoc yesterday , after desoldering the neutriks from the bypass pcb (stupid me , wrong side ) and replacing sifam directors 1mA with some other VU´s i had .
instead of 1n5371 i used 1n5372 cause i didn´t get them.

transformers :lundahl 1540 input , edcor 10k/600

still i´m a little worried about the heat on the high voltage 783 . i used to use quite bigger cooling on my G9´s . any long time experience with the silkscreened cooling? (250v , 0,1A secondary)

inside is still quite a mess , so just a front pic for now...



ChrioN

Re: D-AOC PCBs - the building and help Thread
« Reply #771 on: April 18, 2010, 06:37:14 AM »
Thanks for the new picture. Seems kinda stupid to use a 600/15k input tranny with dual vactrols.
« Last Edit: April 18, 2010, 06:39:07 AM by ChrioN »
"All PCB traces are curved to emulate the electrical response of point-to-point wiring" -Drip

babyhead

Re: D-AOC PCBs - the building and help Thread
« Reply #772 on: April 22, 2010, 11:29:31 PM »
Shameless selfserving bump.

I am looking at this circuit and I am thinking of adding a low gain mic input stage with a 12av7 in a grounded cathode configuration as well as having the 10K input so I can leave it as a fixed patch in Protools. I know most people would say to build it first stock, but I can never really do that. Since there is room on the power supply, (I am planning on using the T03 LM350 for the DC heaters) I figure this is a good place to experiment. So I'd like to know if my shot in the dark is near target or even necessary.

In simulation, I have a Grounded Cathode Amp. set to 21db gain w/o input step up, Ra is 2.5k, Rl is 100k, 100v B+ @ 9ma. With an output z of 1.8k, I plan on feeding it into the 10k:10k through a switch. With this and the compressor amps, I would think I could gain up a ribbon mic and and have light compression. I was also thinking that I might try and pick off some NFB after c102, maybe on a switch.

I figure I am going to have to experiment, but I want to get some feedback on my design considerations. Any help helps.

Thanks-

 

flight

Re: D-AOC PCBs - the building and help Thread
« Reply #773 on: April 27, 2010, 08:57:52 AM »
Quote from: [silent:arts

for the meters, read SSLtechs LA2A calibration instruction.
the metering circuit is exactly the same.

Hey Silents just a stupid question probably  , but why should i have to plug Meter + and - inverted from the pcb ?? ( i mean + pcb into - meter  and - to +)
That way i have something good in Vu meter up to 7db compression  and acting as a GR mode . :P

[silent:arts]

Re: D-AOC PCBs - the building and help Thread
« Reply #774 on: April 27, 2010, 12:04:31 PM »
Hey Silents just a stupid question probably  , but why should i have to plug Meter + and - inverted from the pcb ?? ( i mean + pcb into - meter  and - to +)
That way i have something good in Vu meter up to 7db compression  and acting as a GR mode . :P
since I have never heard something like this before most likely your VU meters are miss labeled

flight

Re: D-AOC PCBs - the building and help Thread
« Reply #775 on: April 28, 2010, 04:55:10 AM »
Strange ,
I got them from JLM audio ...

Thanks for info Silents  :)

ilfungo

Re: D-AOC PCBs - the building and help Thread
« Reply #776 on: April 28, 2010, 09:57:47 AM »
Sorry for a stupid question....
D-AOC meter shows only GR?
There is a wiring guide ?
Thanks

[silent:arts]

Re: D-AOC PCBs - the building and help Thread
« Reply #777 on: April 28, 2010, 10:15:14 AM »
Sorry for a stupid question....
D-AOC meter shows only GR?
There is a wiring guide ?
it shows what you want ...
it is DIY ;D

ilfungo

Re: D-AOC PCBs - the building and help Thread
« Reply #778 on: May 03, 2010, 08:21:13 PM »
Ciao
LM350T must be mounted off board?
thanks

ChrioN

Re: D-AOC PCBs - the building and help Thread
« Reply #779 on: May 04, 2010, 01:41:35 AM »
What are you talking about? Its clearly marked on the PCB.

Ciao
LM350T must be mounted off board?
thanks
"All PCB traces are curved to emulate the electrical response of point-to-point wiring" -Drip


 

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