The Amp Garage

It's the basic Liverpool, but it's got 2 V2 sockets in parallel. I can put in a 6SL7 or a 12ax7 in V2 for a different sound (but not both!) He was very clear on that! Since I first tried it, I left the octal tube in. It just has more character. Kenny gave me a few different tubes. There's one Chines...

OK. I'll come clean. I have an Octal Plus Liverpool that Kenny built for me. It does just about anything I could want as far as tone goes. I didn't ask for it to be built that way. I just played his amps at his house, basically went slackjawed and asked him "how is this even possible?" Anyway, have ...

I've always just loved playing, but I haven't been in a real band for decades. I want to work in an original music band and get something started, but I'd like some advice on what to put up as a sort of calling card. The problem is I'm really self-critical, so there's always something I want to impr...

Sorry to hear about your loss. They leave such a hole in your heart when they go and it hurts like nothing else. Destroys me every time it happens, but I wouldn't want to live without them.

Anybody heard an Allesandro amp recently? I met him a long time ago when he was first getting started. I've talked to him and bought a few things over the year (he answers his own phone). He seems really into it--last time he was telling me that he's making chassis out of pure copper because he thin...

2. Why use that 3.3M/10pF filter to mix the reverb and clean signals? Like high resistance means more noise so 3.3M seems huge. Why can't we just use a cap. The 3M3 is part of a voltage divider, which in conjunction with the 470k in series with the 100k reverb level pot - both of the latter of whic...

I was never lucky enough to meet or talk to the man...but from what I've read, I think he voiced his amps by doing the one thing that most humans just don't seem to have any ability or interest in...he LISTENED... I was at his house on a couple of occasions. He blew my mind. Really. And you're righ...

On the subject of attenuators, I bought the Dr. Z Lite (for combo use) unit and an Allessandro Muzzle. The Muzzle is pretty amazing in it's transparency and I'm completely of the opinion that I would get my tone and then use the muzzle to tamp any unwanted volume rather than add a MV to any amp that...

It does sound good. It would be nice to know the settings on the McCarty too. Straight humbucker I'm guessing. One section with a lot of lows on the second clip sounds like BAD speaker breakup. Have you thought about putting a Emenence Legend 10" in it. Awsum speaker. After testing with a partscast...

Structo wrote:You can solder the resistor from pin 1 to pin 5 and connect the wires from the phase inverter to pin 1.

6V6 and 6L6 have the same pinout.

Awesome. Thanks Tom. I'm going to try that.

Ahh. Ok, I'm comparing my Bassman circuit that has these to the princeton circuit. The PI feeds pin 1 of the Bassman, but pin 5 of the princeton. The bassman has these standard, but 6L6 vs 6V6. So I would move the wire from pin 5 to pin 1 before adding the grid resistor? Do I understand that correct...

Thanks Structo.

I did have a lingering question based on some of the research I did. I have seen 1K5 grid stopper resistors between 1 & 5 on the output tubes suggested.
Is this a worthwhile change? If I don't lose anything by trying it out, I suppose I should just do that.

Oh right! I did try the shielded input before I took the pics. I heard the blue ones were good, and I did keep those. I did notice that the values of the ones in the PI had drifted apart quite a bit. I measured the Spragues before they went in and they were spot on.

Mine is the AA1164 model Princeton Reverb. I think it was probably the second year of the silverface, but that schematic was untouched for several years and still the same as the blackface version of this amp. When I first opened it up and got the schematic and googled it, I found a guy that built a...

Sounds like you got it working good! What all did you do to it? Caps and tubes? I got a blueprint kit from Area 51, so all the electrolytic and coupling caps, the plate resistors, then from Mojo, balanced the PI section with close spec Dale resistors. The hum was coming from the big capacitor in th...