Lowther A Series

The A series of drivers embody the classic Lowther sound which has made Lowther so loved for over 50 years.  They have a transparency in the midrange that is unrivaled.  The Lowther sound is especially well presented by the PM2A and PM5A which have a purity of tone in the highs unlike any other speaker.

       

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SPECIFICATIONS
PM6A PM7A PM2A PM5 PM4
Overall Diameter 23.2 cm 23.2 cm 23.2 cm 23.2 cm 23.2 cm
Overall Depth 10.5 cm 11.0 cm 13.0 cm 13.0 cm 15.5 cm
PCD Mounting Centres 20.8 cm 20.8 cm 20.8 cm 20.8 cm 20.8 cm
Baffle Hole cut-out 19 cm 19 cm 19 cm 19 cm 19 cm
Voice coil diameter 3.9 cm 3.9 cm 3.9 cm 3.9 cm 3.9 cm
Voice coil impedance (nominal) 8 or 15 ohm 8 or 15 ohm 8 or 15 ohm 8 or 15 ohm 8 or 15 ohm
Air gap width 1 mm 1 mm 1 mm 1 mm 1 mm
Magnet type Alcomax 2 Alcomax 3 Alcomax 3 Alcomax 3 Alcomax 3
Flux density (I Tesla=10,000 Gauss) 1.75 Tesla 1.95 Tesla 2.1 Tesla 2.3 Tesla 2.4 Tesla
Diaphragm Twin Paper Twin Paper Twin Paper Twin Paper Twin Paper
Frequency response 30 Hz-20kHz 30 Hz-20kHz 30 Hz-20kHz 30 Hz-20kHz 30 Hz-20kHz
Nominal air resonance 36 Hz 36 Hz 36 Hz 36 Hz 36 Hz
Sensitivity at 1m/1kHz/1 watt 96 db 96 db 97 db 98 db 98 db
Maximum voice coil travel 1 mm 1 mm 1 mm 1 mm 1 mm
Shipping weight 4.0 kg 4.0 kg 6.0 kg 6.5 kg 10.0 kg

All drivers can be ordered with Silver Coils