'A' Series Drive Units
|
Lowther Loudspeaker Drive units are for use where only the finest standards of sound reproduction will satisfy. Their unique design and performance are world famous. Only the finest proven materials and micro-precision techniques are used in their production.
The 'A' Series range maximises design potential enabling Lowther quality to be enjoyed in systems using single drive units to multi-unit assemblies such as Lowther's incomparable horn-loaded designs.
|
| PM7A | PM2A | PM5 | PM4 | |
 |
 |
 |
 |
|
| Overall Diameter | 22.5 cm | 22.5 cm | 22.5 cm | 22.5 cm |
| Overall Depth | 11.0 cm | 13.0 cm | 13.0 cm | 15.5 cm |
| Depth from rear of Mounting Frame | 10.1 cm | 11.0 cm | 11.0 cm | 14.2 cm |
| PCD Mounting Centres | 20.8 cm | 20.8 cm | 20.8 cm | 20.8 cm |
| Baffle Hole cut-out | 19 cm | 19 cm | 19 cm | 19 cm |
| Magnet Ring Diameter | 9.7 cm | 11.5 cm | 11.5 cm | 12.8 cm |
| Voice coil diameter | 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 |
| Air gap width | 1 mm | 1 mm | 1 mm | 1 mm |
| Air gap height | 5 mm | 5 mm | 5 mm | 5 mm |
| Magnet type | Alcomax 3 | Alcomax 3 | Alcomax 3 | Alcomax 3 |
| Flux density (I Tesla=10,000 Gauss) | 1.95 Tesla | 2.1 Tesla | 2.3 Tesla | 2.4 Tesla |
| Diaphragm | Twin Paper | Twin Paper | Twin Paper | Twin Paper |
| Frequency response | 30 Hz-20kHz | 30 Hz-20kHz | 30 Hz-20kHz | 30 Hz-20kHz |
| Maximum voice coil travel | ± 1 mm | ± 1 mm | ± 1 mm | ± 1 mm |
| Shipping weight | 4.0 kg | 6.0 kg | 6.5 kg | 10.0 kg |
| PM8 | PM6A | A45 | A55 | |
 |
 |
 |
 |
|
| Overall Diameter | 22.5 cm | 22.5 cm | 17.4 cm | 17.4 cm |
| Overall Depth | 10.5 cm | 10.5 cm | 10.5 cm | 11.0 cm |
| Depth from rear of Mounting Frame | 9.6 cm | 9.6 cm | 9.6 cm | 10.1 cm |
| PCD Mounting Centres | 20.8 cm | 20.8 cm | 15.6 cm | 15.6cm |
| Baffle Hole cut-out | 19 cm | 19 cm | 14 cm | 14 cm |
| Magnet Ring Diameter | 9.7 cm | 9.1 cm | 9.1 cm | 9.7 cm |
| Voice coil diameter | 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 ohm | 8 ohm |
| Air gap width | 1 mm | 1 mm | 1 mm | 1 mm |
| Air gap height | 5 mm | 5 mm | 5 mm | 5 mm |
| Magnet type | Alcomax 3 | Alcomax 3 | Alcomax 3 | Alcomax 3 |
| Flux density (I Tesla=10,000 Gauss) | 1.8 Tesla | 1.75 Tesla | 1.75 Tesla | 1.98 Tesla |
| Diaphragm | Twin Paper | Twin Paper | Twin Paper | Twin Paper |
| Frequency response | 30 Hz-20kHz | 30 Hz-20kHz | 80 Hz-20kHz | 80 Hz-22kHz |
| Maximum voice coil travel | ± 1 mm | ± 1 mm | ± 1 mm | ± 1 mm |
| Shipping weight | 4.0 kg | 4.0 kg | 4.0 kg | 4.0 kg |
Please email us if you require any further technical information.
Despatch of drive units, ex-works, worldwide, is within 10 working days of receipt of payment.
Specifications subject to amendment without prior notice where design developments permit advancement.
Designed, made in England and distributed world-wide by:
LOWTHER LOUDSPEAKER SYSTEMS. P.O. Box 184, Sidcup, Kent DA14 4NL, ENGLAND.
- Email: {sales@lowtherloudspeakers.co.uk}
- UK FAX: 020 8308 0778
- International FAX: 0044 20 8308 0778
- UK PHONE: 020 8300 9166
- International PHONE: 0044 20 8300 9166