Re: STK-S4 Classic Stack Plus - ETA?
I assume you use a Helmholtz coil to simulate the noise field. it's uniform because the source is far away from the pickup. the field generated by the strings are not uniform so the pickup picks up the the difference in flux passing thru two coils in the pickup. how can it sound like the flux thru one of them? the common parts in flux are cancelled, aren't they?
unless the the field generated by the strings are so non-uniform then you have to use super strong magnets to magnetize the hell out of the strings and kill the sustain?
can you say something without giving away your secret?:wink:
you must've got your patents by now.
that's fascinating! but how does it work?Evan Skopp said:We use a device called a Helmholtz coil to calibrate each individual Stack Plus pickup for maximum hum cancellation. Normally, the only place you'll find a Helmholtz coil is in a university physics lab. Each Stack Plus gets a resistor value based on the results of the Helmholtz test. This type of testing and calibration, in addition to the unique magnetic structure of the pickup (and something called flux transfer plates), allows it to achieve extraordinarily low levels of 60-cycle hum.
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I assume you use a Helmholtz coil to simulate the noise field. it's uniform because the source is far away from the pickup. the field generated by the strings are not uniform so the pickup picks up the the difference in flux passing thru two coils in the pickup. how can it sound like the flux thru one of them? the common parts in flux are cancelled, aren't they?
unless the the field generated by the strings are so non-uniform then you have to use super strong magnets to magnetize the hell out of the strings and kill the sustain?
can you say something without giving away your secret?:wink:
you must've got your patents by now.