Debate on Eddie's Plexi
Moderators: VelvetGeorge, RACKSYSTEMS
- MikeO
- Senior Member
- Posts: 157
- Joined: Tue Feb 10, 2009 12:54 am
- Just the numbers in order: 13492
- Location: Sherman Oaks, CA
Re: Debate on Eddie's Plexi
there are sooo many posts on this so I apologize if it's been discussed (i did search)... but I had a question about that 'touring amp' with the orange drops in it. Did anyone notice the grid resistors in the phase inverter?? It looks like a pair of 100ks instead of the usual 1 meg. It looks like the 470ohm is still there. what the? what does that do?
- ampSnob
- Senior Member
- Posts: 344
- Joined: Thu Jan 05, 2006 6:15 pm
Re: Debate on Eddie's Plexi
MikeO wrote:there are sooo many posts on this so I apologize if it's been discussed (i did search)... but I had a question about that 'touring amp' with the orange drops in it. Did anyone notice the grid resistors in the phase inverter?? It looks like a pair of 100ks instead of the usual 1 meg. It looks like the 470ohm is still there. what the? what does that do?
good eye. I don’t see any other green resistor bands to compare it too but it sure looks wrong in the pic. have to try that one someday.
The pic of the magic marshall has at least 1 correct 1-meg there though. Can’t see the other one as the chocolate cap is blocking it.
just for reference:
spaceace76 wrote: here they are, hosted by me so hopefully they won't disappear
http://tinyurl.com/touringamp1
http://tinyurl.com/touringamp2
BTW. Glad the boards back up, Much appreciation VG!!!
- Doug H
- Senior Member
- Posts: 929
- Joined: Tue Jan 22, 2008 2:56 pm
- Location: Canada
Re: Debate on Eddie's Plexi
?? those look like green bands in that pic right there
- MikeO
- Senior Member
- Posts: 157
- Joined: Tue Feb 10, 2009 12:54 am
- Just the numbers in order: 13492
- Location: Sherman Oaks, CA
Re: Debate on Eddie's Plexi
?? not in the 3 different monitors i've looked at. they look just like the 100k in the PI and every other 100k in there.Doug H wrote:?? those look like green bands in that pic right there
- spaceace76
- Senior Member
- Posts: 1673
- Joined: Sat May 10, 2008 11:54 am
- Just the numbers in order: 7
Re: Debate on Eddie's Plexi
the third band doesn't really look green, but it doesn't look yellow like the 100k plate resistors in the preamp. Could have been faded by the time the photo was taken.
the third band on the right resistor looks completely faded off. The left one has the smallest hint of green. I'll see if I can get a photoshop type program to ID the colors here.
Personally I don't see the point in modding these values. It would totally screw with the biasing for the PI tube
EDIT:
Checked with GIMP (freeware version of photoshop) color picker tool to see what colors came out. I zoomed in 1600% and centered on the various bands in question.
the right hand resistor, third band, seems like a faded green
http://imgur.com/3zKmxn9
the left resistor, third band. green is more visible when viewing normal size, and very apparent when zoomed in
http://imgur.com/EUKPbZN
this is the middle resistor, first band, and the color of the resistor itself for comparison. The yellow is much brighter and easy to see. Definitely different from the faded atomic puke green from the 1M/100k.
http://imgur.com/YDZRf0Y
the third band on the right resistor looks completely faded off. The left one has the smallest hint of green. I'll see if I can get a photoshop type program to ID the colors here.
Personally I don't see the point in modding these values. It would totally screw with the biasing for the PI tube
EDIT:
Checked with GIMP (freeware version of photoshop) color picker tool to see what colors came out. I zoomed in 1600% and centered on the various bands in question.
the right hand resistor, third band, seems like a faded green
http://imgur.com/3zKmxn9
the left resistor, third band. green is more visible when viewing normal size, and very apparent when zoomed in
http://imgur.com/EUKPbZN
this is the middle resistor, first band, and the color of the resistor itself for comparison. The yellow is much brighter and easy to see. Definitely different from the faded atomic puke green from the 1M/100k.
http://imgur.com/YDZRf0Y
- MikeO
- Senior Member
- Posts: 157
- Joined: Tue Feb 10, 2009 12:54 am
- Just the numbers in order: 13492
- Location: Sherman Oaks, CA
Re: Debate on Eddie's Plexi
interesting, thanks for doing that... I can't see it on my iMac but I looked on my g/f's iphone and I think I can see a bit of green... but not on my iphone. weird.
Does anyone know what brand of resistors those are? I have a couple of similar types in my bin but just 100k. They look really high quality.
it wouldn't make much sense on it's own but I guess I was initially thinking there could be something else going on in the ckt. that we're unable to see.
just wasting time as usual haha
Does anyone know what brand of resistors those are? I have a couple of similar types in my bin but just 100k. They look really high quality.
it wouldn't make much sense on it's own but I guess I was initially thinking there could be something else going on in the ckt. that we're unable to see.
just wasting time as usual haha
Last edited by MikeO on Sat Aug 02, 2014 2:55 pm, edited 1 time in total.
- MikeO
- Senior Member
- Posts: 157
- Joined: Tue Feb 10, 2009 12:54 am
- Just the numbers in order: 13492
- Location: Sherman Oaks, CA
Re: Debate on Eddie's Plexi
re: orange drop amp, would anyone care to guess what size/value those snubber caps (ceramic) are that are on the Screen Filter caps?
Hmmm... also, those don't look like 56k resistors.
<edit> that's not the screen filters... oops. interesting.
I apologize if this has been discussed. I can't seem to find any discussion on it though. I'm also slightly beer drunk.
Hmmm... also, those don't look like 56k resistors.
<edit> that's not the screen filters... oops. interesting.
I apologize if this has been discussed. I can't seem to find any discussion on it though. I'm also slightly beer drunk.
- spaceace76
- Senior Member
- Posts: 1673
- Joined: Sat May 10, 2008 11:54 am
- Just the numbers in order: 7
Re: Debate on Eddie's Plexi
Just for clarification's sake, if you look at the left side of each picture in the middle of the toolbox window, you can see what color the picker tool found. the one with the middle resistor is loaded with both colors i mentioned in my post. The observations made were not by what color I could see personally, but by the colors the tool was able to find.
the snubber caps are anyone's guess. They are probably very low value (pf) and high voltage. Obvious, I know...
the snubber caps are anyone's guess. They are probably very low value (pf) and high voltage. Obvious, I know...
- Jeremy1283
- Senior Member
- Posts: 384
- Joined: Fri Aug 01, 2014 6:16 pm
- Just the numbers in order: 13492
- Location: Los Angeles California
Re: Debate on Eddie's Plexi
Friedman does amazing work.motrock wrote:Just to give you an example... here are 2 clips of a Plexi that John Suhr worked on:
http://www.youtube.com/watch?v=3dmx5MNUtXk" onclick="window.open(this.href);return false;
http://www.youtube.com/watch?v=PLOvYA6ipMQ" onclick="window.open(this.href);return false;
And here is the one that Dave Friedman did for me:
http://www.netmusicians.org/files/94-DaveVariplex.mp3" onclick="window.open(this.href);return false;
Dave and John do the same thing to get the EVH tone. I would listen to those guys! Dave has done all kinds of work for me, and he's got me as close as I think I can get!
- Strat78
- Senior Member
- Posts: 3093
- Joined: Fri Aug 03, 2007 12:38 pm
- Just the numbers in order: 13492
- Location: though I'm standing still, I'm in a moving place.
Re: Debate on Eddie's Plexi
Yeah he does, but it's way too polite for VH, especially VHII. It needs to be a little more nasty:Jeremy1283 wrote:Friedman does amazing work.motrock wrote:Just to give you an example... here are 2 clips of a Plexi that John Suhr worked on:
http://www.youtube.com/watch?v=3dmx5MNUtXk" onclick="window.open(this.href);return false;
http://www.youtube.com/watch?v=PLOvYA6ipMQ" onclick="window.open(this.href);return false;
And here is the one that Dave Friedman did for me:
http://www.netmusicians.org/files/94-DaveVariplex.mp3" onclick="window.open(this.href);return false;
Dave and John do the same thing to get the EVH tone. I would listen to those guys! Dave has done all kinds of work for me, and he's got me as close as I think I can get!
https://soundcloud.com/iskra68/luts68b
- Jeremy1283
- Senior Member
- Posts: 384
- Joined: Fri Aug 01, 2014 6:16 pm
- Just the numbers in order: 13492
- Location: Los Angeles California
Re: Debate on Eddie's Plexi
That was amazing Strat78. one day my amp will sing that good!Strat78 wrote:Yeah he does, but it's way too polite for VH, especially VHII. It needs to be a little more nasty:Jeremy1283 wrote:Friedman does amazing work.motrock wrote:Just to give you an example... here are 2 clips of a Plexi that John Suhr worked on:
http://www.youtube.com/watch?v=3dmx5MNUtXk" onclick="window.open(this.href);return false;
http://www.youtube.com/watch?v=PLOvYA6ipMQ" onclick="window.open(this.href);return false;
And here is the one that Dave Friedman did for me:
http://www.netmusicians.org/files/94-DaveVariplex.mp3" onclick="window.open(this.href);return false;
Dave and John do the same thing to get the EVH tone. I would listen to those guys! Dave has done all kinds of work for me, and he's got me as close as I think I can get!
https://soundcloud.com/iskra68/luts68b
Dirty and chewy.
is that just the amp variaced?
- rgalpin
- Senior Member
- Posts: 3668
- Joined: Mon Apr 04, 2005 10:08 am
- Location: Washington, DC
Re: Debate on Eddie's Plexi
there's no response to that... sounds so good Strat78. man - that is inspiring.
- Jeremy1283
- Senior Member
- Posts: 384
- Joined: Fri Aug 01, 2014 6:16 pm
- Just the numbers in order: 13492
- Location: Los Angeles California
Re: Debate on Eddie's Plexi
+1rgalpin wrote:there's no response to that... sounds so good Strat78. man - that is inspiring.
- Jeremy1283
- Senior Member
- Posts: 384
- Joined: Fri Aug 01, 2014 6:16 pm
- Just the numbers in order: 13492
- Location: Los Angeles California
Re: Debate on Eddie's Plexi
So just add a 470uf along eith the .68?Strat78 wrote:I've got to run but here is a clip with the .0022 and 470uf. More sparkle but a little stiff? One more mod and then I'll leave it alone for a while.
http://soundclick.com/share?songid=9460136" onclick="window.open(this.href);return false;
- garbeaj
- Senior Member
- Posts: 3020
- Joined: Mon Dec 27, 2010 12:58 pm
- Just the numbers in order: 13492
- Location: Houston, TX
Re: Debate on Eddie's Plexi
Sounds amazing man...very close to the bone right there!Strat78 wrote:Yeah he does, but it's way too polite for VH, especially VHII. It needs to be a little more nasty:
https://soundcloud.com/iskra68/luts68b