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hell yeah I appreciate all of that! From my understanding, if it wanted an 800, a 150 would get driven too hard right? And you said the input is supposed to be isolated on the tank like it is. So yep time to open the amp.

It's a split back so I can go open or closed back. Got some black shadows in there with it open. 🔥 It fills the room so much for a 2x12. But all the complaining is beside the point.

If it is supposed to be a C then my tank should be good. It measures, it smacks both ways etc... So unless I needed the A then it seems it's time for me to start cracking open the amp and trying to check all the test points. It was open when I got it split into a head and a cab (broken shell...

Hell yeah appreciate it! Good question. I checked the amps rca jacks themselves and both are grounded. From what I'm googling that means that the tank itself is supposed to have the input isolated to prevent ground loops when the amps jacks are grounded if I understand correctly?

Oh my bad lol, I guess it was just the Facebook algorithm recommending it to me then I hadn't really looked at the curves, so the 1n270 swings out much more than the others. Therefore it doesn't clip as hard and has more headroom maybe? I'll have to reference that while breadboarding at some...

I've been seeing a ton of ads for it but haven't checked it out. That explains why I haven't seen any wampler course ads in a while

Lol fair enough well thanks anyway I didn't even think about reaching out to the company but they also don't say what type on their schematics. I guess someone there will know though

Hey I was exploring the forums and saw you might still have a ss140c (or had one in2021 so fairly recently). If you still have that could you check which reverb tank it has? It probably uses the same reverb tank as the vh and I don't think my reverb tank is the original and can't seem to figure...

Ooooh thats gorgeous

Oh ok my bad. I misread and thought you thought the tl071 was a dual op amp as well and were going to try the other half of that for some reason.

Tl071 is a single channel op amp so only do it as is. Tl072 is a dual channel op amp and yes you could wire a 3pdt to switch it from 321 to 765 to test both halves or just move some jumpers or something.

update still hasn't showed up even though they said they'd send me one :( i just wanna play with my terrarium is that too much to ask

On the reverb tank my multimeter measures it as 24 ohms input, 201 ohms output, but transducers don't measure accurately like that anyway. Just reflowed it for shits and gigs even though I've checked the connections before multiple times.

Mustard and ketchup

Random screw sticking out of the chassis underneath as ground. Cleans up around 3 for the clean channel gain. Frequency measurement jumps around more though. The 3 khz is basically an arbitrary measurement with how much it jumps

Think I need to try again later using actual ground instead of the neg of the rca because that 47ohm resistor in the circuit or nah?

Retried with .7 volts on signal generator this time for more appropriate voltage. Bigger one still clean channel, probably cuz distortion compresses.

The signal generator I only set to 2v going into the front of the amp cuz I don't know how much is supposed to be going into the amp and don't wanna fry something while testing by putting too much. Just googled it and guitars def don't put out that much.

Bigger waveform was clean channel. Nothing with multimeter.

Oh ok so if anything it would drive the tank too easily then right? Right I understood. Conveniently I just bought a cheap scope/signal generator since I gotta meet the test conditions. Time to try that out!