Where can i get an impedance chart for all the duncan humbuckers?
- Thread starter BowerR64
- Start date
Artie
Peaveyologist
Re: Where can i get an impedance chart for all the duncan humbuckers?
There's only this tone chart. You won't find an "impedance" chart per se, because how would anyone know what frequency you wanted to measure at?
There's only this tone chart. You won't find an "impedance" chart per se, because how would anyone know what frequency you wanted to measure at?
T
theodie
Guest
Re: Where can i get an impedance chart for all the duncan humbuckers?
Maybe he is getting Impedance mixed up with Inductance ( henry)?? You will not be able to find the Inductance on Duncans.
Maybe he is getting Impedance mixed up with Inductance ( henry)?? You will not be able to find the Inductance on Duncans.
Artie
Peaveyologist
Re: Where can i get an impedance chart for all the duncan humbuckers?
Impedance is AC resistance. Whereas DC resistance is a static measurement, impedance is an active one. A pickup coil would have a different impedance at 400hz than at, say 1 Mhz. Impedance could be measured at a "nominal" frequence, like speakers, but it wouldn't mean much. I think thats why they publish DC resistance instead. It will always be the same.
Zerberus said:
Impedance is AC resistance. Whereas DC resistance is a static measurement, impedance is an active one. A pickup coil would have a different impedance at 400hz than at, say 1 Mhz. Impedance could be measured at a "nominal" frequence, like speakers, but it wouldn't mean much. I think thats why they publish DC resistance instead. It will always be the same.
tone4days
Heel Whacker
Re: Where can i get an impedance chart for all the duncan humbuckers?
dc resistance is not strictly the same as impedance ... perhaps the confusion comes because they are both measured in ohms ... impedance is an AC characteristic and varies with frequency ... DC resistance is just a special case of that - resistance with frequency = 0 Hz ... if one could put a sinusoid signal with a known amplitude (voltage) at a given frequency into the circuit (in this case, a pickup), then one could measure the output and determine the resistance at that frequency ... changing the frequency would result in a different measurement ... sweeping the frequency band (taking output measurements for every input frequency) would theoretically yield a frequency response plot for the circuit
i've often wondered if there was a way to do this for pickups and figured we dont see it because it would be competitive suicide for pickup makers ... hell, some of them wont even tell you what kind of magnet they use ... hopefully, this explanation suggests how limited info such as DC resistance and peak resonance freq really is in determining a pickups sonic characteristics
ultimately, we have to use our ears ... and the 21 day return policy is just perfect for this
hope this helps
t4d
dc resistance is not strictly the same as impedance ... perhaps the confusion comes because they are both measured in ohms ... impedance is an AC characteristic and varies with frequency ... DC resistance is just a special case of that - resistance with frequency = 0 Hz ... if one could put a sinusoid signal with a known amplitude (voltage) at a given frequency into the circuit (in this case, a pickup), then one could measure the output and determine the resistance at that frequency ... changing the frequency would result in a different measurement ... sweeping the frequency band (taking output measurements for every input frequency) would theoretically yield a frequency response plot for the circuit
i've often wondered if there was a way to do this for pickups and figured we dont see it because it would be competitive suicide for pickup makers ... hell, some of them wont even tell you what kind of magnet they use ... hopefully, this explanation suggests how limited info such as DC resistance and peak resonance freq really is in determining a pickups sonic characteristics
ultimately, we have to use our ears ... and the 21 day return policy is just perfect for this
hope this helps
t4d
Re: Where can i get an impedance chart for all the duncan humbuckers?
Yes i wanted the DC resistance, im sorry i was thinking of speakers or somthing. But i found the info...well some of it anyway. Ive decided i like the not so hot 10K pickups, it has just the right amount of gain + clearity that i like. Ive tried a few others and they get a little to muddy. The screamin demon is what i went with but im curious about the bluebucker. It seems to have a little more balls.
Yes i wanted the DC resistance, im sorry i was thinking of speakers or somthing. But i found the info...well some of it anyway. Ive decided i like the not so hot 10K pickups, it has just the right amount of gain + clearity that i like. Ive tried a few others and they get a little to muddy. The screamin demon is what i went with but im curious about the bluebucker. It seems to have a little more balls.
