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01-02-2024, 02:31 AM
Separate post since the last one was getting long.
I popped the proper fuses in, and brought it up on my variac and lightbulb limiter. Seemed fine, and voltages in the power amp seemed reasonable. Popped the pre-amp tubes in, and they didn't light. Stupid series heaters... Popped the power tubes in too and brought it up again, and all the tubes lit and everything seemed fine. Plugged a cable in, hooked up a speaker, and tapping the instrument cable with my thumb showed that it was output sound. Hooked up my guitar for some tests, and this amp is loud! Had to be careful with volume since it was late at night. Took it off the current limiter and variac, and played it that way for a bit, and it was fine. The tone is nothing to write home about, but it's a starting point for mods.
Restrung my guitar and plugged in today when I could open it up a bit more, and received further confirmation of it's loudness. Things in my house shake and I could feel the pressure wave when I accidentally hit the strings too hard with the volume up. It'd be fun to mod the amp to have the level of punch certain boutique amps like Fryettes and Wizards are fauned over for. Something else to look into. Overall seems like a promising mod platform, though a master volume or power scaling might be needed. There is also a weird thing happening where turning the clean volume all the way down doesn't actually mute the clean channel. Something to figure out later. If I had the boost on and didn't know it, then the clean volume's wiper wasn't grounded even though it was turned fully off, so that could be it.
For now, I have an amp project for a friend that needs attention, so the Peavey will probably get shelved for a bit aside from maybe the screen resistors so I can play without much worry for tube failures. To finish for now, here's a picture of pretty glowing power tubes loaded up in it:
I popped the proper fuses in, and brought it up on my variac and lightbulb limiter. Seemed fine, and voltages in the power amp seemed reasonable. Popped the pre-amp tubes in, and they didn't light. Stupid series heaters... Popped the power tubes in too and brought it up again, and all the tubes lit and everything seemed fine. Plugged a cable in, hooked up a speaker, and tapping the instrument cable with my thumb showed that it was output sound. Hooked up my guitar for some tests, and this amp is loud! Had to be careful with volume since it was late at night. Took it off the current limiter and variac, and played it that way for a bit, and it was fine. The tone is nothing to write home about, but it's a starting point for mods.
Restrung my guitar and plugged in today when I could open it up a bit more, and received further confirmation of it's loudness. Things in my house shake and I could feel the pressure wave when I accidentally hit the strings too hard with the volume up. It'd be fun to mod the amp to have the level of punch certain boutique amps like Fryettes and Wizards are fauned over for. Something else to look into. Overall seems like a promising mod platform, though a master volume or power scaling might be needed. There is also a weird thing happening where turning the clean volume all the way down doesn't actually mute the clean channel. Something to figure out later. If I had the boost on and didn't know it, then the clean volume's wiper wasn't grounded even though it was turned fully off, so that could be it.
For now, I have an amp project for a friend that needs attention, so the Peavey will probably get shelved for a bit aside from maybe the screen resistors so I can play without much worry for tube failures. To finish for now, here's a picture of pretty glowing power tubes loaded up in it:
