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Posted by Bob Gollihur on January 08, 2001 at 16:06:50:
In Reply to: Feedback! UGH! posted by mark on January 08, 2001 at 15:58:51:
: I am hoping someone can help me with a feedback problem I am having. I play a pretty cheap upright with a fishman pickup, I have been using it live and plugging it into my eden bass amp but I am having tons of problems with feedback and I am also getting a nasal sound... anyone have some experience that can help me out with this?
I don't know the input impedance of your specific Eden model, but the Fishman and many other piezo-based double bass pickups require an input impedance of 1 megohm or better for proper loading. If not, the sound is kind of thin and quacky, so this may be the place to start. A suitable preamp may be necessary, though you may also want to check any devices you may own, such as the SansAmp Bass DI (940K ohms) and some stomp boxes that may have a suitable input impedance when active, if their sound is suitable.
The pickups turn our basses into giant microphones, and like with any mic, you need to avoid aiming the speaker at or near your bass. Setting it up alongside or in front of you can be one solution. Also turning the lowest bass frequencies down a bit- that satisfying thump on stage very often turns to mud off-stage. I've actually found that a tone slightly thinner than my ears like is actually better for projection and clarity.
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