Jose Master Volume question

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harddriver
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Re: Jose Master Volume question

Post by harddriver » Thu Jan 14, 2010 1:56 pm

It work just fine in a NVM amp, read back further where SDM explains it's preformance in a NMV and 2203 tyle amp.

I would venture to say the amp at the shootout probably did not have the diodes in it,the diodes are subtle butit adds a grind to the tone, much like Good guest describes the MXR distortion+ and /or Tubescreamer. But I am 99.9% sure it had Jose's trademark pre tonestack master volume.

I suggest you install the master using the 1 Meg audio pot as in the diagram without the diodes first to see if you like the way it interacts with your amp first. Some people don't because at low volume settings it limits how hard the Phase Inverter gets driven.

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Re: Jose Master Volume question

Post by harddriver » Thu Jan 14, 2010 2:01 pm

jerrydyer wrote:its the asymetrical clipping that gives that slightly pissed off tone on top of the smoothmess that it adds.
Correctomundo! Asymmetrical clipping more closely emulates power tube distortion whereas Symmetrical clipping emulates preamp tube clipping more or less.

Kind of like the difference between a Boss SD-1 and Ibanez Tubscreamer pedal. :wink:

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Re: Jose Master Volume question

Post by Kapo_Polenton » Thu Jan 14, 2010 3:11 pm

I suggest you install the master using the 1 Meg audio pot as in the diagram without the diodes first to see if you like the way it interacts with your amp first. Some people don't because at low volume settings it limits how hard the Phase Inverter gets driven.


Perfect.. I will read back and look for SDM's notes on this. As I run my NMV full out with a hotplate, not too worried about the phase inverter not being run hard. I wonder though, if the POT is set to 0, will I essentially be bypassing the mod or will it still affect the tone? I'll read back from the beginning and see if this is mentioned. I think I am after the asymmetrical clipping either way. I'm not overly concerned about the Ed tone in this instance. I just listened to that shoot out clip and that amp sounded badass!

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Re: Jose Master Volume question

Post by Grosh_Guitars » Thu Jan 14, 2010 5:41 pm

Is this type of diode clipping similar to what is used in the Silver Jubilee Series Marshall's?
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Re: Jose Master Volume question

Post by vh junkie » Thu Jan 14, 2010 6:34 pm

I think this different... the zeners are on the cathode follower output...
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Re: Jose Master Volume question

Post by Kapo_Polenton » Thu Jan 14, 2010 10:23 pm

Found this.. not sure if ithelps others but answers my question. I am going to try it with and without diode/zeners. I'll post clips if people are interested.
In a plexi, if you only go Jose master, no diodes, you only get the clipping of the first 2 tubes at low volumes, not too exciting, so the diodes come in to add some extra distortion. No extra gain though, just clipping the signal peaks above the breakdown voltage of the zener which gives you distortion. Below the Zener breakdown voltage, the diodes do nothing, so will pass the signal unaltered. The signal to the PI can get weak though if you clip too low with the Zeners. So you may trade massive diode clipping for PI clipping and even loose the ability to overdrive the PI or attain max volume if you go way too low on the clipping threshold of your diodes. So that's why you should stay in the range Mark Cameron suggested.

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Re: Jose Master Volume question

Post by jerrydyer » Fri Jan 15, 2010 11:47 am

harddriver wrote:
jerrydyer wrote:its the asymetrical clipping that gives that slightly pissed off tone on top of the smoothmess that it adds.
Correctomundo! Asymmetrical clipping more closely emulates power tube distortion whereas Symmetrical clipping emulates preamp tube clipping more or less.

Kind of like the difference between a Boss SD-1 and Ibanez Tubscreamer pedal. :wink:
right now I am using the cathode following 1 meg MV with a push pull for the diodes. I really like it like that. My amp is switcheable between 2 gain stages 3 gain stages and 4 and it sounds best in 3 and 4. The diodes on a regular NMV doesnt sound good at all to me. When I go to the NMV portion of my amp I like it to be just like a JTM 50 type tone, 1987 type tone. Doing this way gives me like 3 amps in one. and the fourth gain stage is footswitcheable and can be added to either the two gain stage or three giving a huge variety of gain and tones. (plug plug plug) Its NAMM week gotta sneak one in here and there. :)
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Re: Jose Master Volume question

Post by Kapo_Polenton » Fri Jan 15, 2010 1:52 pm

(plug plug plug) Its NAMM week gotta sneak one in here and there.
:mrgreen: I'm all for it.. you guys contribute and give wayyy more back to people like me on this forum than Digitech, Marshall, or Dunlop ever have! I'm starting to think my Plexi is gonna turn into a 1959 bright/2203 type deal with Jose master....

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Re: Jose Master Volume question

Post by Kapo_Polenton » Sun Jan 31, 2010 1:57 pm

right now I am using the cathode following 1 meg MV with a push pull for the diodes. I really like it like that. My amp is switcheable between 2 gain stages 3 gain stages and 4 and it sounds best in 3 and 4. The diodes on a regular NMV doesnt sound good at all to me. When I go to the NMV portion of my amp I like it to be just like a JTM 50 type tone, 1987 type tone. Doing this way gives me like 3 amps in one. and the fourth gain stage is footswitcheable and can be added to either the two gain stage or three giving a huge variety of gain and tones. (plug plug plug) Its NAMM week gotta sneak one in here and there. :)
Having just tried the Jose on my 1987x NMV, I would agree with this statement. Nothing too exciting here with a NMV. It sounds a tad fulller and has a bit more bite but not much more gain at all. I'm thinking it might be the icing on the cake for a 2203 though. Seems kind of pointless with a plexi. Def. would not have made much of a difference to any VH amp gain wise.

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Re: Jose Master Volume question

Post by rockgod212 » Fri Sep 21, 2012 4:02 pm

hope this thread aint dead. got a couple of questions. ive seen a few schems put the cap before the 10k resistor coming from CF, should the 10k come off the CF into the cap then into the pot? im a bit confused by this. also all i have are 1n4742- 12 volt zeners, will they work? do connect the 2 zeners the same way as in the diagram i have? can you use a symetric clipping with the jose style master? how do i get max. volume using a jose master, as i have it wired right now doesnt seem very loud, hence the questions?
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Re: Jose Master Volume question

Post by jerrydyer » Mon Sep 24, 2012 1:07 pm

its cool reading over all this again. Also if you look at Joses schem (Sams schem of the JOse) you will see its not diodes on the back of the pot.. look close. Transistors with one leg snipped. so whos tried what now. I also like a single 13 volt for tons of clip.. works good for some tones but overall its too much clipping.

I also like to use a 10k res before the zeners to weaken the effect of the clip. Some customers have said, the push pull Jose effect is too much so I scaled it back a little on most of my amps.
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Re: Jose Master Volume question

Post by rockgod212 » Mon Sep 24, 2012 3:49 pm

so whats the best way to wire the jose master?
jerrydyer wrote:its cool reading over all this again. Also if you look at Joses schem (Sams schem of the JOse) you will see its not diodes on the back of the pot.. look close. Transistors with one leg snipped. so whos tried what now. I also like a single 13 volt for tons of clip.. works good for some tones but overall its too much clipping.

I also like to use a 10k res before the zeners to weaken the effect of the clip. Some customers have said, the push pull Jose effect is too much so I scaled it back a little on most of my amps.
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Re: Jose Master Volume question

Post by jerrydyer » Mon Sep 24, 2012 3:52 pm

what = "best"
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Re: Jose Master Volume question

Post by jerrydyer » Mon Sep 24, 2012 3:54 pm

purple power does rule !!! :hairband: :hairband: :hairband: :hairband:
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Re: Jose Master Volume question

Post by rockgod212 » Mon Sep 24, 2012 4:20 pm

let me rephrase, the correct way to wire it up. right now i have it wired with the .22 and the 10k reversed. i dont seem to have much volume or clipping going on. this is on a amp i built with a switchable normal master vol. and jose master vol. with switchable full plexi or 2203.
jerrydyer wrote:what = "best"
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