Found in the street today !

[Jazzy_Pidjay]

French reply of Pierre Antonini

Bonjour,

Oui je suis celui là, mais je ne peux pas vous être d'un grand secours car j'ai quitté la profession depuis 8 ans et j'habite actuellement à Montréal. Je n'ais plus les schémas de cette console.
Coté alimentation, l'alimentation d'origine était + et - 18 volts mais vous pouvez utiliser une alimentation + et - 15 volts. Vous aurez dans ce cas un peu moins de dynamique (le niveau max de sortie est fct de l'alimentation, le maximum pour les circuits intégrés étant de 18V).

Cordialement

Pierre Antonini

the original PSU was +18 and -18

:thumb:

 

[NewYorkDave]

Traduction, svp ! Je parle très peu du français. :green:

 

[Jazzy_Pidjay]

translate by software & modified by me :green:

Hello,

Yes it is well me, but I cannot be to you of a great help because I have left the profession for 8 years and I currently live in Montreal. I do not have any more the schematics of the console.
For the PSU, the PSU of origin was + and - 18 volts but you can use a PSU of + and - 15 volts. You will have in this case a little less dynamics (the level max of exit is fonction of the PSU, the maximum for the integrated circuits being of 18V).

Cordially

Pierre Antonini

it's help ?

 

[NewYorkDave]

It's funny that the word for food (l'alimentation) and power are the same! Of course, it makes perfect sense, but it still sounds funny in a direct translation. :wink:

 

[mcs]

the food of origin was + and - 18 volts

Sounds interesting :green:

Best regards,

Mikkel C. Simonsen

 

[Jazzy_Pidjay]

:green: yes

so

i'm ready for a +18, -18 PSU

 

[mcs]

I just remembered I have a small PCB for a LM317/337 powersupply. Do you want it?

This is the layout:

Best regards,

Mikkel C. Simonsen

 

[Jazzy_Pidjay]

for sure !

[email protected]

thanks :thumb:

 

[mcs]

I'm very sorry, but my e-mail software does not allow attaching physical objects. Perhaps I need Windows for that? :wink:

Just send me your address, and I'll send you the board :grin:

Best regards,

Mikkel C. Simonsen

 

[Jazzy_Pidjay]

the physical PCB ? :shock:

my physical address ? :green:

ok !

 

[chimimic]

Dear Jazzy,

all transformers I shown are LF transformers, not power transformers. Some are for mic, and other for line applications.

Let me know if you want LM317 / LM337 pair, I can give you one of them, with additionnal components (resistors, capacitors, diodes, led).
If you have not yet, of course ! :green:

And perhaps an all made +/-15V power supply, to allow you test more quickly your isolated input module...

Hé hé.

 

[Jazzy_Pidjay]

Dear Chimimic :grin:

:green:

yes i'm in for this gift !! thanks

for now i'm already on the schematic
but it's not easy to finish...

+

 

[Jazzy_Pidjay]

:?

if there is no error, there is the preamp + eq schematic
without the values... (they come)

anybody understand something ?

i haven't trace the line input (asymetric)
monitoring, solo, bus etc...

so i don't understand how the signal output works
it seems to be asymetric ?

any info ?

thanks :thumb:

http://img.photobucket.com/albums/v439/jazzy_pi/1084v4.gif

 

[Jazzy_Pidjay]

exactly :grin:


but how to just use the preamp + eq

i wanna make few racks with the amp, eq, limiter
from the master & VU

but i ignore how to use the output at this point.


PS : i don't understand the low-cut ?

PS2 : !!!! i have forget a 2N 708..... !!!!

 

[mcs]

[quote author="Jazzy_Pidjay"]PS : i don't understand the locut ?[/quote]
The low cut is on when only one (small) coupling capacitor is switched in. When both caps are connected (in parallel) the low cut is off.

Best regards,

Mikkel C. Simonsen

 

[Jazzy_Pidjay]

yes yes i have forget to note On/Off

but i don't understand why
two caps in parallel don't affect the sound :?

 

[Jazzy_Pidjay]

http://img.photobucket.com/albums/v439/jazzy_pi/1084v5.gif

i have update some errors
and add some values.

there's no line input on my schematic
i have made like the pushbutton always stay on "mic" position
but i don't know if have think of all the consequence
of this missing switch & missing components.

so if you see something strange tell me, i don't
understand the real fonctions of the schematic and
can't verify by myself only.

 

[chimimic]

Dear Jazzy,

Your schematic looks fine, but the outlined section ("for line input") seems strange for me. Are you sure of this wiring ? Do you have a clip indicator on your desk ? If yes, I think this circuit can be used to light the clip led (possible if 10uF cap is wired between Base transistor and ground, and if led is connected between Collector and V+). Basic circuit if this is the case, but certainly enought.

I'm not at all sure to be right !

Can you verify wiring of this circuit portion and tell us more ?
Thanks.

Remy

 

[Jazzy_Pidjay]

here is the last schematic with line input

missed some capacitors values
draw a schematic is a nightmare :evil:

something strange ?? for me the Lowcut Led is strange
but 1000x verified. :shock:

Edited:
http://img.photobucket.com/albums/v439/jazzy_pi/1084v6.gif

PS: Chimimic check your "The Lab" mailbox.

 

[Jazzy_Pidjay]

with this wiring i think the low-cut pushbutton
is just a support for the Led
because the low-cut pushbutton don't affect
the path of the signal in the Led.

Clip Led ?

http://img.photobucket.com/albums/v439/jazzy_pi/DSCF0022.jpg

http://img.photobucket.com/albums/v439/jazzy_pi/DSCF0047.jpg

PS: can i use an input xformer for the output ?