Lowther PM4A
The PM4A is the top drive unit in Lowther's alnico range. The magnet features cobalt alloy pole pieces which allow the drive unit to operate up to 24 KHz.
The specification of the PM4A is as follows:
Flux density: 24,000 gauss
Impedance: 15ohms
Frequency range: 20Hz - 24,000Hz
Power handling: 6 watts
Total flux: 385,000 Maxwells
Weight: 8Kg
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