I've been tweaking my Princeton lately through a couple of other threads. I love the tremolo in this amp and have been reading a few threads about slowing it down even more by increasing capacitance in the relevant part of the circuit. With the stock capacitor values (.01uF, .01uF, .022uF) and the speed turned all the way down i'm getting about 230bpm (just using an online tap temp tool to check). I tend to play it with the speed dial on 2 or 3, i don't go much faster than that. The idea of slowing it down some more was interesting so i clipped another .01uF cap i had into the circuit temporarily and it went down to ~200bpm. Then i swapped that extra .01uF cap with a .022uF cap and got it down to about 175bpm. So then i added both the .01uF and the .022uF cap and it didn't slow down any further (still got ~175bpm). I'll mess around with this some more this evening. Should it continue to slow down with more capacitance or is there a lower bound it maybe wouldn't fall past?