As new with boxes, Silver coil, price for 1 pair
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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