Jose Master Volume question

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harddriver
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Jose Master Volume question

Post by harddriver » Tue Sep 04, 2007 7:33 pm

From the looks of the schematic I got where does the master volume tap in at V1 100K or at V2?

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rockstah
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Re: Jose Master Volume question

Post by rockstah » Tue Sep 04, 2007 7:43 pm

harddriver wrote:From the looks of the schematic I got where does the master volume tap in at V1 100K or at V2?
looks to me like its v2a's 100k ( cathode follower )

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Post by harddriver » Tue Sep 04, 2007 8:49 pm

Thanks for the clarification I may try it with my mini plexi.

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rockstah
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Post by rockstah » Tue Sep 04, 2007 10:26 pm

what value is the pot used i wonder? 1 meg?

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Post by Good Guest » Tue Sep 04, 2007 10:34 pm

Someone better get a good schematic up before someone electrocutes themselves... :shock: Big difference in voltage at a plate resistor vs. a cathode...like 100's of volts!

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Post by rockstah » Tue Sep 04, 2007 10:36 pm

im thinking it looks like this.

anyone have a part number for the zener diodes used in this master?


Image

EDITED
Last edited by rockstah on Tue Sep 11, 2007 1:35 am, edited 2 times in total.

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novosibir
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Post by novosibir » Tue Sep 04, 2007 11:46 pm

rockstah wrote:im thinking it looks like this.
Right - with the difference, that the diode's stripes are facing away of each other, and only the one to ground is a zener. The upper diode is a regular 1N4007.

Moreover the tone stack is a 33K/500p

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Post by rockstah » Tue Sep 04, 2007 11:58 pm

novosibir wrote:
rockstah wrote:im thinking it looks like this.
Right - with the difference, that the diode's stripes are facing away of each other, and only the one to ground is a zener. The upper diode is a regular 1N4007.

Moreover the tone stack is a 33K/500p

Larry
okay i edited it
Image

and u r correct. the schem shows 33k/.00047 = 33k/470pf but I'm only doing the layout to show where the master is. :D

but how can u tell on the schem the diodes being used i wonder?

Mark told me "So after the cap that goes to the master you add back to back 20v zeners to ground."
Last edited by rockstah on Tue Sep 11, 2007 1:36 am, edited 1 time in total.

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Post by novosibir » Wed Sep 05, 2007 12:18 am

rockstah wrote:but how can u tell on the schem the diodes being used i wonder?
Because my last name is DIODE :lol:

Just kiddin'!

I didn't see it on 'this' schem of course, but I simply know, how to place diodes, to realize a 'clipper' in a signal path. This are just simple rules of physics.

Larry
The fault almost always is sitting in front of the amp :wink:

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Post by rockstah » Wed Sep 05, 2007 12:20 am

novosibir wrote:
rockstah wrote:but how can u tell on the schem the diodes being used i wonder?
Because my last name is DIODE :lol:

Just kiddin'!

I didn't see it on 'this' schem of course, but I simply know, how to place diodes, to realize a 'clipper' in a signal path. This are just simple rules of physics.

Larry
:lol: thanks Larry!

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Post by bmf5150 » Wed Sep 05, 2007 12:32 am

anyone tried it yet?
R.I.P My precious daughter Aubrey Marie May 20th to May 23rd 2006,we love and miss you!
My EVH sound clips.
http://soundclick.com/share?songid=7782093" onclick="window.open(this.href);return false;

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Post by rockstah » Wed Sep 05, 2007 12:47 am

soon.

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rockstah
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Post by rockstah » Wed Sep 05, 2007 1:25 am

Larry, u have a part number for the zener diode i need? :)

im thinking this one? http://www.mouser.com/search/ProductDet ... 3-1N5357BG

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Post by erigm » Wed Sep 05, 2007 11:07 pm

Kevin O'Connor suggests 10v zeners in this position. Its in TUT1.
erigm

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Post by rockstah » Wed Sep 05, 2007 11:10 pm

ill dig it out. ;)
i was going on Mark Camerons word since he has actually seen the mod.

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