Lowther PM7A

The Lowther PM7A was designed as an improved version of the PM6A, with a stronger magnet allowing higher frequencies to be reproduced.

The specification of the PM7A is as follows:

Flux density: 19,650 gauss

Impedance: 15ohms

Frequency range: 20Hz - 20,000Hz

Power handling: 6 watts

Total flux: 250,000 Maxwells

Weight: 4Kg