schematics for langevin 5301

[wilebee]

hey there does anyone have these schematics langevin 5301? Wil

Wilebee

 

[CJ]

Just the 5116b. Sorry. What is the one your after? Mic pre?

 

[wilebee]

No CJ Its a varible mu compressor baised on a 6es8

Wilebee

 

[Butterylicious]

I have several Langevin schematics but nothing on the 5301. All my stuff is preamp & amp. I did find 5 pages of Langevin transformer specifications. I've been trying to scan all my schematics and get them posted.

 

[wilebee]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=23793&item=7325451418&rd=1&ssPageName=WDVW is what they look like Wil

Wilebee

 

[rafafredd]

Don´t know if this is the one, but it´s a compressor using the 6ES8 allright... It´s usually called leveline.

 

[wilebee]

I think that might be it Wil

 

[wilebee]

thnaks raf

 

[jhaible]

Where are the A, B, C and D nodes are going to?

Surely the A, B from the cathodes of the AY7 are not going to the A, B in the attack/release time constant network ?!

And, is there a picture, or even a user manual of this online somewhere?

JH.

 

[rafafredd]

mmm probably just test points to match the tubes?

 

[jhaible]

[quote author="rafafredd"]mmm probably just test points to match the tubes?[/quote]

Makes sense. 'Twas the 10k and 100k resistors that confused me - thought they'd have to go somewhere. But then they'r probably just in for protection / isolation of the probes. Never seen this in my ususal circuit reading (synthesizers), but with tubes and their high voltages it certainly makes sense.

JH.

 

[mcs]

[quote author="jhaible"]Where are the A, B, C and D nodes are going to?[/quote]
To A, B, C and D at the bottom right (the pushbuttons). The resistors are there to prevent accidents if somebody pushes more than one button at a time.

Best regards,

Mikkel C. Simonsen

 

[jhaible]

[quote author="mcs"][quote author="jhaible"]Where are the A, B, C and D nodes are going to?[/quote]
To A, B, C and D at the bottom right (the pushbuttons). The resistors are there to prevent accidents if somebody pushes more than one button at a time.

Best regards,

Mikkel C. Simonsen[/quote]

Ok, I see. No slam mode here. :wink:

JH.

 

[NewYorkDave]

That was very common with plug-in amplifiers. The output side of those pushbuttons would go to a buss in the console that fed a "tube check" meter. The tapping point for the cathode voltage at each tube--or, in this case, the value of series resistance to limit the current through the meter--would be selected to give a "100%" reading on the meter when the cathode voltage (and therefore the plate current) was at the normal value for a healthy tube. Pushing in the buttons one by one, while reading the tube-check meter, was part of the maintenance technician's daily routine in the studio.

 

[jhaible]

[quote author="NewYorkDave"]That was very common with plug-in amplifiers. The output side of those pushbuttons would go to a buss in the console that fed a "tube check" meter. The tapping point for the cathode voltage at each tube--or, in this case, the value of series resistance to limit the current through the meter--would be selected to give a "100%" reading on the meter when the cathode voltage (and therefore the plate current) was at the normal value for a healthy tube. Pushing in the buttons one by one, while reading the tube-check meter, was part of the maintenance technician's daily routine in the studio.[/quote]

Now, that makes even more sense than just protection resistors!
Thanks for explaining it.

JH.

 

[ciminosound]

If you search our archives for Langevin, Level line, 6es8, ect you will find more info on this unit. We've discussed it before, as far back as the "other" place too!

:sam: