That's not hard to do. Check out my latest video on the 1959RR amplifier

I know. im just adding a bright cap on to my Plexi clone….now I am like, “uhh what?”

We get the coolest Ts!

Fryette/Fane F70G

Hey buddy, it's from an album I did a long time ago that's up on Spotify. I keep trying to post the link but YT keeps deleting it. Anyway, the track is called "Snow White". Talk/hang soon!

It's an amazing track. The drums on that whole album are amazing as well. So tight and in your face. Good stuff Joe!

For what it's worth, Dave Friedman recommends a 5751 in V1 of some of his amps if you want a little more clean headroom. I have a 5751 in V1 of my Dirty Shirley Mini and can confirm it does indeed add a bit of extra clean headroom.

Transconductance on a 5751 is 1200umohs. That’s 20% lower than a 12AX7 at 1600. Many 12AX7s underperform, putting them in a similar category as 5751. Also, some tubes labeled 12AX7 are really 5751, such as Sovtek 12AX7WB. Meaning, you’re splitting hairs based on labeling. A 20% reduction in gain is not much different than turning the gain knob down a notch or so. Similar to the discussion about AX/AU/AT in this video, you may like a 5751 because the particular brand you chose has a tonal character you like unrelated to its gain. Moral: Use the specified tube or pick a suitable sub and set your amp accordingly. 😊

@@FryetteAmps thanks for the through reply. Truly appreciate you taking the time to explain things to a noob. I’m a software engineer have been for 15+ years but I’ve always liked hardware more. Doubled in CE in college. Sadly never got to use it nor apply it though. One of these days I hoping to revisit/relearn circuits and dive back into it so I can experiment and build some more clone pedals and maybe an amp one day.🤞 PS I also own a 71 dr103. Really appreciated and loved your guys’ episodes on the 50 and 100 watt Hiwatt and Sound City amps. Keep up the great work. 👍 👍

@@FryetteAmps Thanks for the pro info! VERY helpful. I suppose the 5751 in my DSM is a placebo effect of a sort? Really interesting stuff, I wonder what Dave Friedman would say about it, in this context?

@@dannbrauckmann1545 Ask him and let us know :)

Leakage current is probably the most import of all the tests, so if that checks good, it's good, and your amp is running normally. Once you exceed the capacitors ability to smooth ripple, you have two choices: Accept that that's the way it's designed, or try to mitigate it with larger cap values. The second option will stiffen the amp and possibly kill the feel altogether.

@@FryetteAmps I worry about stiffening an amplifier. I heard that the first or in my case first pair of electrolytics that just go to the power amp section, they can be over spec without too much worry. It’s the following filtering caps for the preamp section where you want to be careful to not overfilter. Whether this true or not - I don’t have enough amplifiers under my belt to really know.? My second thought was to overfilter to remove all ripples- then wire in two wire wound resistors just before the diode rectification bridge on both legs of the secondary side of the power transformer to mimic sag and to loosen the amp back up but without the ripple. Maybe this is just over working for little to no benefit? It just annoys me the ripple comes just at the on point of clipping at the power section with a max 11 watts of clean output in a 15 watts advertised amplifier. Thanks for the previous advice and anymore advice.

@@voxpathfinder15r The first two do all the work and have everything to do with ripple behavior. Not the downstream ones. Don't overthink it.

@@FryetteAmps I posted a video on my channel, perhaps first time in history someone put a Vox Pathfinder 15 on an oscilloscope and looking for totally clean headroom. Just curious what you think about the ripple the few times I show it distorting. Spoil alert, it maxed out at 11 watts before any harmonics set in. Not 15 watts like the adcopy stated. Thanks again Steve for your insight! Now I have to fiddle with the two pcb trimpots for the tremolo circuit since I just replaced the optocoupler. Then it goes back to my nephew as a gift for becoming a father any hour now! kzfaq.info/get/bejne/rLCoidiVrNjVdac.html

It’s the stock value.

@@FryetteAmps ok, just trying to see if you would connect your favorite boost pedal to the lead channel the way it is with that bright cap, then please get the smallest bright cap that works the best and take that large one off so there's no bright cap in the lead channel and the smallest one that works in the normal channel, add your favorite boost pedal and jump the channels and tell me if this sounds better than your favorite boost pedal in the lead channel with the factory bright cap Thanks Steve I would be interested in your opinion

If the seal is good, the electrolyte is not drying out. As stated in the video, capacitor failure modes can be measured. A capacitor with dried electrolyte will read a significantly lower capacitance value and a higher ESR and leakage current.

@@FryetteAmps awesome! Thanks for the reply!