Lowther PM6A
The PM6A is arguably Lowther's most well-known and most successful drive unit. It was released in two versions: the MkI, MkII. It was also available as the "PM6s" when mounted on a stand.
The specification of the PM6A is as follows:
Flux density: 17,500 gauss
Impedance: 15ohms
Frequency range: 20Hz - 18,000Hz
Power handling: 6 watts
Total flux: 196,000 Maxwells
Weight: 3Kg