£ 1,272.00 GBP

Lowther PM4A/PMA65

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Lowther PM4A/PMA65

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£ 1,272.00 GBP
Per Drive Unit
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(available as a single mono or stereo pair)
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Listen to a legacy with the A Series, designed to encapsulate the core Lowther elements that Paul Voigt designed when our story first began. Using our renowned powerful magnet system, the A Series is the choice for high-quality sound reproduction for everyone!

Every Lowther drive unit comes with a complementary digital downloaded plan. Please enter your plan of choice at the checkout.

Lowther Plans are free when you buy a new Lowther Drive Unit. Please see below to find out which drive units will fit this cabinet.

Click here to view our selection of Veneers

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Estimated Price:
£ 1,272.00 GBP
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A Series Speaker Drive Units

Listen to a legacy

Our A Series really encompasses the classic Lowther sound. They hark back to the designs that first put Lowther on the map for audiophiles around the world so many years ago. A legacy that you can continue to listen to today.

High-quality sound reproduction

Each model in the A Series uses a large and powerful magnet assembly, a preference that has become synonymous with the Lowther brand the world over.

This powerful magnet control allows you to experience near flawless sound, thanks to a highly reactive speaker replicating live music at an exceptionally high-quality.

Crystal clear audio

Many Lowther family members tell us that they love the A Series for its transparent audio, especially when listening to mid-range frequencies (which covers much of mainstream music). 

This makes the A Series a fantastic and accessible option for audiophiles looking to join the Lowther legacy.

Full design potential

The A Series can be enjoyed with any system that fits a single drive unit, or they can be incorporated into multi-unit assemblies such as our famous horn-loaded designs.

Bring a heritage home

Enjoy a part of audio heritage at home, with the A Series. The perfect addition to your speaker collection.

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Veneer Selection
In the White
(Standard)
American Walnut
(Standard)
Figured Maple (Standard)
Crown Ash (Standard)
Oak (Standard)
Sapele (Premium)
American Cherry (Premium)
Bamboo (Premium)
Zibrano (Premium)
Sycamore (Premium)
Eucalyptus Figured (Premium)
BubingA (Premium)
Recommended Front Drive Units
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Recommended Top Drive Units
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All Compatible Front Drive Units
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Graphs
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All our loudspeakers are analysed in our listening room using REW acoustics software. The aim is to show a graphic comparison between each Lowther enclosure on demonstration with the recommended drive unit installed for that type of cabinet.
Technical Specifications
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  • Overall Diameter 22.5 cm
  • Overall Depth 15.5 cm
  • Depth from rear of Mounting Frame 14.2 cm
  • PCD Mounting Centres 20.8 cm
  • Baffle Hole cut-out 19 cm
  • Magnet Ring Diameter 12.8 cm
  • Voice coil diameter 3.9 cm
  • Voice coil impedance (nominal) 8 or 15 ohm
  • Air gap width 1 mm
  • Air gap height 5 mm
  • Magnet type Alcomax 3
  • Flux density (I Tesla=10,000 Gauss) 2.2 Tesla
  • Diaphragm Twin Paper
  • Frequency response 30 Hz-20kHz
  • Maximum voice coil travel ± 1 mm
  • Shipping weight 10.0 kg
  • DC Resistance of Voice Coil Re 7.4 ohms
  • Free Air Resonance Fo 45 Hz
  • Emission Piston Area Sd 0.021M²
  • Equivalent Volume Suspension Vas 60.489 Ltrs
  • Suspension Compliance Cms 965.934 u M/N
  • Mass of Cone Mmd 11.0 g
  • Mass of Moving Parts Mms 12.75 g
  • Force Factor Bl 12.511 T-M
  • Mechanical Q Factor Qms 3.75
  • Electrical Q Factor Qes 0.172
  • Total Q Factor Qts 0.164
  • Voice Coil Inductance @ 1 kHz Le 23.178 uH
  • Reference Efficiency No 3.176%
  • Sound Pressure Level SPL 97.038 DbOverall Diameter 22.5 cm
  • Overall Depth 15.5 cm
  • Depth from rear of Mounting Frame 14.2 cm
  • PCD Mounting Centres 20.8 cm
  • Baffle Hole cut-out 19 cm
  • Magnet Ring Diameter 12.8 cm
  • Voice coil diameter 3.9 cm
  • Voice coil impedance (nominal) 8 or 15 ohm
  • Air gap width 1 mm
  • Air gap height 5 mm
  • Magnet type Alcomax 3
  • Flux density (I Tesla=10,000 Gauss) 2.4 Tesla
  • Diaphragm Twin Paper
  • Frequency response 30 Hz-20kHz
  • Maximum voice coil travel ± 1 mm
  • Shipping weight 10.0 kg
Cabinet Recommendations
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Shipping and Returns
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Speakers
All our speakers are handmade in Great Britain and fully tested prior to being shipped. Lead times will vary depending on the cabinet ordered, however this will be fully explained by a Lowther representative when placing your order with us.

Drive Units
We typically ship within 5 days of placing your order of drive units; however, some orders may take up to 10 days to process. Please note that we do not ship on Saturdays or Sundays.

All orders will arrive within 5 - 10 business days.  We offer shipping worldwide. However, we don’t ship to countries that are not operated by DHL or Parcel Force. All orders are shipped and tracked via DHL or Parcel Force.

Loudspeaker Kits
All our loud speaker kits are cut to order in Great Britain. Lead times will vary depending on the order, however this will be fully explained by a Lowther representative when placing your order with us.

Lowther is not responsible for any delays caused by the customs clearance process, or taxation in overseas countries.
Lowther is not responsible for lost package due to incorrect address supplied by the sender.

For more information and shipping inquiries, please contact us at hello@lowtherloudspeakers.com

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Experience the excellence of Lowther sound in whatever loudspeaker cabinet you like.

Frequently asked questions

If this list does not have the answers to your queries, please Contact us. Usually we respond to the general enquiries within 48 hours.

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LOWTHER LISTENING ROOM

Come and try it for yourself, and give your ears the gift of flawless sound.

Step into our Northampton listening room and discover the full range of Lowther speakers and products in a room that’s tailored for audio perfection.

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