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isaac42

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About isaac42

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  1. So, what's the design issue? (For the rest of us who don't have a Viper to open up to find out.)
  2. I have achieved tremolo! I replaced the old LDR (light dependent resistor) with an optocoupler, and I have tremolo action, which is what was wrong with the amp in the first place. Taking the advice of WRGKMC into account, I'm thinking of replacing the old 4000μF 50V filter cap with a 3300μF 100V cap. Higher voltage can't hurt, IMO, and the smaller capacitance rating should still be more than adequate to smooth the DC. It is, after all, about 100 times the capacitance used in my tube amps of the same vintage. Why the higher voltage? Well, why not? First off, as I said, it can't hurt. Next, line voltage is higher now than it was in the 60s, usually 120vac rather than 110vac. So, I'm being cautious. Besides, it's bigger, closer to the size of the original cap, so it will just look better in the amp. Not that anyone other than me is going to see it.
  3. Hey, Lurker! Paolo pretty much got me covered for the sounds I needed. I think I'm good there. One thing I really don't want at this point is to haul around even more gear. I've been trying to cut back, go smaller, lighter, and LESS! I had a moment of panic yesterday. I got some decent sounds out of my PSR-510, and I've been practicing a little bit. I kept telling myself to write down the settings so that I won't have to start from scratch if we lose power, which happens from time to time, but, procrastinator that I am, I kept not doing it. Well, yesterday, there was a blip in the power, and we heard the sound of a transformer blowing! I dashed to the other room to see if I'd lost my settings. Nope! Whew! But I immediately wrote them down in case of another, longer power loss.
  4. I've tried that. I find that I prefer the more aggressive sound I get when digging in.
  5. I'm self-taught, so it may be that some (a lot?) of the things I do are questionable, but they work for me. When playing a major scale, I usually start with the 2nd finger on the tonic on the E (4th) string. 2 with the pinky, still on the 4th. The third I play with the index (1st) finger on the 3rd string, the fourth with the 2nd on the 3rd strong, the fifth with the pinky on the 3rd, sixth with the index on the 2nd string, seventh with the 3rd finger, and finally the octave with the pinky. This way, I can play the entire scale (and another fourth above, for that matter) without having to change position, which is a big help when I'm singing, which I usually am. I can also play 1-3-5 arpeggios on the I, IV and even the V chord, again without having to change position, although I usually do change position for the V. For minor scales, I start with the 1st finger on the tonic. The second I play with the 3rd finger, the third with the pinky, and so on. Again, I can play the entire octave scale without changing position. The third and fourth above the octave are also there, though not the ninth. Playing this way put me at a disadvantage when it came to playing major pentatonic. Even though all of the notes were there, a lot of the time there's sliding when playing bluesy tunes, and it just doesn't work as well. For that, start with the 1st finger on the tonic. Change position, sliding up from the first to the second, then hammer on the third with the 3rd finger. Then you're in position to play the fifth, sixth and octave, all using just the 1st and 3rd fingers.
  6. Okay, you have a point there.
  7. What, like bass players aren't musicians?
  8. Paolo, my YPT-300 has all of those voices. They're in different places, but they're there. None on my PSR-510, unfortunately. However, you having given me a good starting point, I was able to make a kinda sorta close approximation. So, it looks like I'm good. Now, I just have to learn to play it and sing it at the same time! Thanks, all!
  9. No editing capability that I'm aware of. Just picking which sounds to combine.
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