VegasGuitar
Experienced
In addition to doing a similar video for pickups they are also taking about a speaker comparison.
Nope, just running several stacks the old school way.
I would love to see an amp built to the specs and settings, effects and so forth in collaboration with these guys. Kind of like how Steve Stevens did his thing.
I'm seriously missing the boat on these classic tones. Had EVH had recorded Eruption on a stock amp, would anyone have said "if only he modded the flux capacitor and put in tubes made by Keebler elves in hollowed out trees, this may have been a good track"?
It's not the tone. It's those songs. For god sakes the iconic guitar was a Partscaster. Much respect for EVH and the contribution, but IMO all this tone chasing is misguided and overly read into. Dave Friedman is in the business of selling amps and pedals, so take it all with a grain of salt. You too can plug into a stock DSL and take over the world with a guitar. No mojo/mystery mods or any other hocus pocus necessary.
I'm seriously missing the boat on these classic tones. Had EVH had recorded Eruption on a stock amp, would anyone have said "if only he modded the flux capacitor and put in tubes made by Keebler elves in hollowed out trees, this may have been a good track"?
It's not the tone. It's those songs. For god sakes the iconic guitar was a Partscaster. Much respect for EVH and the contribution, but IMO all this tone chasing is misguided and overly read into. Dave Friedman is in the business of selling amps and pedals, so take it all with a grain of salt. You too can plug into a stock DSL and take over the world with a guitar. No mojo/mystery mods or any other hocus pocus necessary.
I agree, kinda, but you have to admit, the sound IS cool, and adds to the way cool vibe.I'm seriously missing the boat on these classic tones. Had EVH had recorded Eruption on a stock amp, would anyone have said "if only he modded the flux capacitor and put in tubes made by Keebler elves in hollowed out trees, this may have been a good track"?
It's not the tone. It's those songs. For god sakes the iconic guitar was a Partscaster. Much respect for EVH and the contribution, but IMO all this tone chasing is misguided and overly read into. Dave Friedman is in the business of selling amps and pedals, so take it all with a grain of salt. You too can plug into a stock DSL and take over the world with a guitar. No mojo/mystery mods or any other hocus pocus necessary.
I like a variety of tones, but when the AXEFXIII created the authentic tab it was like a gift from god. Im not an endless tweaker. Pull up an amp or effect, pepper to taste and go. The brown sound is like obsessing over an old muscle car. Compared to todays engineering, they're awful. Same with this. Get any NEW premium amp, pick one. Mezzabarba, Friedman or anything of that caliber. You have tone for miles and don't have to worry about tracking down tubes or other parts sourced from an old Mir space station. EVH did what he did as did the other greats from the era. They worked with what they had at the time. Thats cool and all from a historical point of view, but personally I'd rather watch paint dry than watch a video of an influencer and a builder discussing the finer points of 50 year old tech. I completely understand I do not live in a bubble and maybe others do, and thats cool too. Different strokes and all.I agree, kinda, but you have to admit, the sound IS cool, and adds to the way cool vibe.
Not to mention how do you get from your stated viewpoint to owning an Axe III?
Regarding this, what effect has changing the tap of the negative feedback?3. The various Plexi models have different default feedback configurations as follows:
Plexi 50W: 100K from 4-ohm tap.
1987x: 100K from 8-ohm tap
Plexi 100W: 47K from 8-ohm tap
1959SLP: 47K from 8-ohm tap
Plexi 6550: 100K off 4-ohm tap
Plexi 100W 1970: 100K off 4-ohm tap
Plexi 50W 6CA7: 100K off 4-ohm tap
Yep, I just read a bit about it and found the same info.The higher impedance taps will have higher output voltages, giving more negative feedback compared to the lower ones. In general, more negative feedback = cleaner and more punchy power amp and less negative feedback = dirtier and more compressed power amp. You can also disconnect it completely for no negative feedback for an even more power amp breakup. For example, Vox AC30 and Fender Tweed Deluxe amps have no negative feedback. Contributes to their ease of break up when cranked.
You may find that the value/tap chosen at the factory were chosen to give a similar response to the larger one. The output tubes being EL84 instead of EL34 makes a bit of difference in the needed amount of feedback, due to their different grid sensitivity and drive requirements....Yep, I just read a bit about it and found the same info.
So I can put it on the 16-ohm tap with no issue and, actually, to achieve the same amount of negative feedback as the 50W I could also lower the resistor value a bit since a 20W amp surely spits out a lower voltage.
Actually it has the same exact resistors configuration as the bigger amps: 10k and 470R to ground.You may find that the value/tap chosen at the factory were chosen to give a similar response to the larger one. The output tubes being EL84 instead of EL34 makes a bit of difference in the needed amount of feedback, due to their different grid sensitivity and drive requirements....
Jeez.The other was the pilot lamp pins (where there is 230V AC!) almost touching a turret, and that was causing an unbearable noise when turning up the master.
Some relevant info:
1. Changing the mid pot to 50K doesn't do much. If the Mid pot is at maximum then it adds about 2 dB boost at 600 Hz.
2. You can replicate the variac using the Variac control. Set it to around 0.8.
3. The various Plexi models have different default feedback configurations as follows:
Plexi 50W: 100K from 4-ohm tap.
1987x: 100K from 8-ohm tap
Plexi 100W: 47K from 8-ohm tap
1959SLP: 47K from 8-ohm tap
Plexi 6550: 100K off 4-ohm tap
Plexi 100W 1970: 100K off 4-ohm tap
Plexi 50W 6CA7: 100K off 4-ohm tap
If you want to recreate 47K from the 4-ohm tap with the Plexi 100W model you would reduce Negative Feedback by 1/sqrt(2) = 0.71. The default value is 6.6 so the new value would be 4.7.
If you want to replicate changing the resistor value you scale by the ratio of the old value to the new value. I.e. if the original value is 100K and you want to simulate 47K you would double the negative feedback.
Note that this isn't exact as changing the feedback resistor also changes the impedance "seen" by the phase inverter but it will get you in the ballpark.
4. The "Fat" switch on V2 is a capacitor across the 820 ohm cathode resistor. Some Plexis had no cathode cap. Others had 0.68uF.
The "Voice" switch on a Friedman BE switches in a 470uF cap in one position.
There is no way to replicate changing the cathode cap in the models. I'm personally not a fan of large cathode caps on V2. I think it makes the tone to mushy.
Thanks!Jeez.
Well, it's an easy swap, as you said, and as you demonstrated, the builder may not be the sharpest marble in the sack, so good luck!