Modded DR Too Much Filtering?

[mhuss]

eg it might be doing this -

+1 - particularly given your description that in only happens when starting with silence, not when picking continuously.

[thisismyname]

Due to various mods, the build looks to have a fair bit more gain than stock; has its unconditional stability, with signal, into an inductive load, been verified?
eg it might be doing this -

Your question is a little above my head, but I know it's a no.
Also, by "stock", do you mean the stock DR or the stock Trainwreck Expresso?
When my amp came back from Kendrick in '15, the trem circuit was removed at my request and a 25k mid pot had been installed. That was the most "Deluxe Reverb" stock it's ever been and it had this problem back then too.

[thisismyname]

Thanks for the help guys, I really appreciate it!

Sunday is the earliest I'd be able to check the 5Y3 voltages.

[Bob-I]

Looking at the voltages, something’s off. It’s hard to tell, because this is a modified circuit so I’m not sure the function of each tube.

Do you have the schematic? If not, a description of the amp and tube function, I.E. V1 preamp, V2, reverb, etc.

I’d suspect that one of the 12AX7s is incorrectly biased, or the power rail doesn’t have the correct RC values.

[thisismyname]

Ok, I'm back!

Here is the schematic of the entire amp.
A quick guide:
-Layout based on a Blackface Fender
-The power supply section, phase inverter, and power amp section, as a whole, are organized exactly like a BF Fender.
-The Vibrato Channel (main channel) starts on the bottom left
-The Normal Channel (disconnected before PI) starts on the top left.
-The Reverb Circuit is at the top right, but leaves the Vibrato Channel at the middle bottom.

It looks cramped, but I tried my best to make it easy to read. Upon drawing this, I noticed a few oddities here and there. I'll let you guys be the final verdict on it considering there is a lot I still don't know, power-supply design being my biggest blindspot.

[thisismyname]

Here is the voltage chart with a 5Y3 instead of the GZ34.

[thisismyname]

Also, I changed the 100k mid pot to the stock 25k. I thought the 100k pot might've been affecting the bass pot not doing anything. I ran it through the Tone Stack Calculator, and saw how little bass control was in the tone stack. With a 25k pot, the bass control is back to being effective. I haven't been able to play it yet though.

I live in an apartment, but I'm 1 door away from the bar/restaurant I used to work at for 6 years. The owner is a bass player with the house band that plays there every Sunday. He's really cool. He lets me go in in the morning before the place opens and play as loud as I want. It's actually a pretty big place. It has a really high ceiling too. The natural reverb is a little muddy, but it's big enough so that cranked amps aren't painful to be around (however, this particular amp still gets painfully punchy overdrive there).
The only downside is because of my 6am-2pm work schedule, I can only go there 10 times a month, and because of my 2-week block schedule, I can only go every other week.
I can sometimes play loud at my Mom's when no one is home. The neighbors would've said something years ago if they were bothered.

[Stevem]

With only 370 volts on the output plates and -32 for bias that sounds like a cold setting to me.

[thisismyname]

I had a 5Y3 in this amp before. It felt softer in the onset of distortion compared to the GZ34, but it merely "delayed" the excessive punchiness because it still got that way when I turned it up a little higher than with the GZ34. I got a little more usable distortion, but not much, and I wasn't going for anything extreme.

[thisismyname]

With only 370 volts on the output plates and -32 for bias that sounds like a cold setting to me.

I set the bias with a Eurotubes bias meter at 10-11 watts dissapation as recommended for 6V6 tubes. That's all I've had to know about biasing to "make it work".

Do you think the bias circuit is off?

[thisismyname]

Any ideas or recommendations, guys?

[bepone]

did you check 5Y3 datasheet under max.input allowed capacitance and what is written there?

[Stevem]

Good point being made here in this last post!

That 5Y3 is not going to last that long dumping into the 50uf of that stacked first filter node!

There only rated for 20uf into a filter cap and even half that when feeding a choke first.

[thisismyname]

Good point being made here in this last post!

That 5Y3 is not going to last that long dumping into the 50uf of that stacked first filter node!

There only rated for 20uf into a filter cap and even half that when feeding a choke first.

You're right!

What are my options?

[bepone]

to reduce value of first capacitor and stop abusing poor tube ?