Lowther PM2A
Three versions of the PM2A were produced: the PM2A MkI, the PM2A MkII and the PM2A MkIII.
| Model | Flux density | Frequency range | Size | Weight | Original price |
| PM2A MkI | 21,000 gauss | 20Hz - 22,000 Hz | 8.5 X 8 X 7 inches | 6 Kg | £30-0s-0d |
| PM2A MkII | 23,000 gauss | 20Hz - 22,000 Hz | 8.5 X 8 X 7 inches | 8 Kg | £40-0s-0d |
| PM2A MkIII | 21,000 gauss | 20Hz - 22,000 Hz | 8.5 X 8 X 7 inches | 8 Kg | ? |
The PM2A MkIII is the same as a PM2A MkI but with a special bracket for securing within an Acousta Twin enclosure.
