Well, I guess the time has come to unveil our contestants. I find it quite interesting that no one has correctly guessed any of them yet!
I figured it might be fun to first see what people thought sounded best, and then see what they think these different pickups are "supposed" to sound like.
Anyway, here they are:
- Underwood
- Revolution Solo
- ATM25
- C411
- Red Hot
- Planet Wing
Here are some of my thoughts on these guys. I should mention that these were recorded on my carved German bass, with Spirocore solos on E and A and Sonores Twine on G and D. Also, Soundcloud kind of messed up the sound on all of them, with a loss of some low-end warmth, and the addition of some annoying high-end twinkling artifacts--what are you gonna do?
Underwood - Not the best, but not the worst either. It has been, however, the most reliable of all my pickups. My first one lasted almost 20 years before it started occasionally making popping sounds. I've found the best results using only the bass side element and running it through a SansAmp Bass Driver DI (which I did not do on this recording, but it really helps get rid of the harshness and gives it a more round, full sound). I use a folded up Trident gum wrapper as a shim
Revolution Solo - I know some people have great success with this one, but I've had real trouble getting a good sound out of it. I've tried on a couple of basses, right side up, upside down, bass side, treble side...nothing seemed to work. The SansAmp doesn't seem to help as it does for some other piezos. I suspect that, as much as I tried, my sanding job isn't as perfectly even as it should be, and perhaps a cleaner fit would improve the sound.
ATM25 - First of all, sticking this under the tailpiece does not in any way give the best sound. However, for me it does give the most usable sound--that is clear, clean volume before feedback. This position tends to make the sound a little compressed and also boomy, but blended with a good piezo for clarity, it can sound really great.
C411 - This had been sitting in my closet for a couple of years as I hadn't had a phantom power source for a while. When I recently got the Doubler I pulled it out and it sounded so good that now it is my first choice on my carved bass. It doesn't sound so good on my Kay. As with all contact mics, position is incredibly important. I put it above the bass bar, about 6-8 inches below the bridge. It is more feedback resistant than a mic, but at high volumes certain notes can get boomy. A notch filter helps sometimes.
Red Hot - What can I say? For $13.99, it's not bad. I bought it when I had a few pickups crap out in a row and I decided I wanted a cheap backup. If I run it through the SansAmp and blend it with a mic I get a totally usable sound. It's a little thin, so I put a couple little bits of thick rubber band on top and then a thin wood veneer on top of that. I think the rubber helps tame the harsh high end a little.
Planet Wing - I think this is the best sounding piezo on my bass, unfortunately I have had a lot of technical issues with it so that I don't really trust it. When it was only a couple of months old, it started cutting out. The problem seemed to be with the 1/4" jack. I sent it back to get repaired, but when it was returned the problem started up again. I now have it mounted on my backup bass with the jack mounted so that gravity pulls the cord in the direction that keeps the sound from cutting out. The SansAmp improves the sound but not so drastically as with the Underwood. Mixed with a mic it sounds pretty killer on my gut-strung Kay.