Decca Corner Horn 'Voigt' Speakers Cw Lowther PM7A's
- 1900.00 £
- Published date: March 19, 2025
-
- Billinghurst, West Sussex, United Kingdom
Decca Corner Horn 'Voigt' Speakers Cw Lowther PM7A's
⭕ A unique opportunity to purchase these ultra-rare (circa. 1955) Decca Domestic Corner Horn Speakers (serial nos.22.. and 24..) loaded with very early Metal PlaquePM7As (serial nos.22.. and 22..).The enclosures are in superb condition (especially considering they are over 55 years old) and have the original piano-laquer finish.They sound and look simply awesome.
The Lowther PM7As (with almost consecutive serial nos.) possess massively high-gauss,pure Alnico, magnets.I have owned PM6As and PM2As but these sounded hard and a little compressed in comparison.As far as I am aware the PM7A was constructed using much higher quality magnet material(shared by the mighty PM4A)and therefore the PM7A is truly high-end in performance and quality.These particular drivers have been totally refurbished by way of addition of brand new Lowther manufactured:
Cones
Surrounds
Spiders
Baskets
Adaptors
Gaskets
Hardware (bolts,washers,etc)
All the above are genuine Lowtheritems and have consecutive serial numbers 13370 and 13371.The original Lowther packaging has been retained for completeness.These units (if looked after) will provide many,many years of listening pleasure.Since the service (carried out 17th May 2012) they have had less than one hours use and are not even run-in (suggest circa.40hrs use) and are quite literally plug and play.The magnets are totally original and work perfectly providing awesome dynamics,presence and startling realism.
Specification is as follows:
DC Resistance of Voice Coil Re 7.4 ohms
Free Air Resonance Fo 64.609 Hz
Emission Piston Area Sd 0.021
Equivalent Volume Suspension Vas 43.429 Ltrs
Suspension Compliance Cms 693.505 u M/N
Mass of Cone Mmd 7.0 g
Mass of Moving Parts Mms 8.75 g
Force Factor Bl 8.234 T-M
Mechanical Q Factor Qms 1.751
Electrical Q Factor Qes 0.338
Total Q Factor Qts 0.317
Voice Coil Inductance 1 kHz Le 102.389 uH
Reference Efficiency No 2.922%
Sound Pressure Level SPL 96.674 Db
The Lowther PM7As (with almost consecutive serial nos.) possess massively high-gauss,pure Alnico, magnets.I have owned PM6As and PM2As but these sounded hard and a little compressed in comparison.As far as I am aware the PM7A was constructed using much higher quality magnet material(shared by the mighty PM4A)and therefore the PM7A is truly high-end in performance and quality.These particular drivers have been totally refurbished by way of addition of brand new Lowther manufactured:
Cones
Surrounds
Spiders
Baskets
Adaptors
Gaskets
Hardware (bolts,washers,etc)
All the above are genuine Lowtheritems and have consecutive serial numbers 13370 and 13371.The original Lowther packaging has been retained for completeness.These units (if looked after) will provide many,many years of listening pleasure.Since the service (carried out 17th May 2012) they have had less than one hours use and are not even run-in (suggest circa.40hrs use) and are quite literally plug and play.The magnets are totally original and work perfectly providing awesome dynamics,presence and startling realism.
Specification is as follows:
DC Resistance of Voice Coil Re 7.4 ohms
Free Air Resonance Fo 64.609 Hz
Emission Piston Area Sd 0.021
Equivalent Volume Suspension Vas 43.429 Ltrs
Suspension Compliance Cms 693.505 u M/N
Mass of Cone Mmd 7.0 g
Mass of Moving Parts Mms 8.75 g
Force Factor Bl 8.234 T-M
Mechanical Q Factor Qms 1.751
Electrical Q Factor Qes 0.338
Total Q Factor Qts 0.317
Voice Coil Inductance 1 kHz Le 102.389 uH
Reference Efficiency No 2.922%
Sound Pressure Level SPL 96.674 Db
Phone number ✆ 07946 973992
Billinghurst, West Sussex
Related listings
-
SHARMAN V-1300, DESKTOP SCANNER ANTENNA
ELECTRONICS Great Coates (Lincolnshire) April 16, 2025 15.00 £ -
Escient VC-1 Player & 4 TB (VX-600) Serv...
ELECTRONICS Newark On Trent (Nottinghamshire) April 16, 2025 1300.00 £ -
-
-
Hi-END Acapella Audio Link Cable Rolls 1...
ELECTRONICS Thornton Hough (Merseyside) April 15, 2025 2600.00 £ -
Teca Synergy N5 5-Channel EMG EP System
ELECTRONICS Heckmondwike (West Yorkshire) April 15, 2025 3300.00 £
-
LEAK TL12.1 Vintage KT66 Valve Amps - FU...
ELECTRONICS Rowsley (Derbyshire) April 15, 2025 2600.00 £ -
-
-
Stunning Art Deco 20 Signature Version 2...
ELECTRONICS Wimborne Minster (Dorset) April 15, 2025 2300.00 £ -
-
-
-
BW Nautilus 803 Bowers Wilkins Stereo Sp...
ELECTRONICS Lostwithiel (Cornwall) April 15, 2025 1900.00 £ -
APPLE IPhone 7 - Rose Gold, 32 GB
ELECTRONICS Shipton on Cherwell (Oxfordshire) April 15, 2025 550.00 £
-
-
-
MIT ORACLE MAX-2 REV 2 DIGITAL INTERCONN...
ELECTRONICS Tetbury (Gloucestershire) April 15, 2025 1850.00 £
-
Zeiss Ikon Ikovox D - Epic Cinema Speake...
ELECTRONICS Cosford (Warwickshire) April 15, 2025 4600.00 £ -
Devialet D-Premier Preamp Plus Dac And P...
ELECTRONICS Heathfield (East Sussex) April 15, 2025 2800.00 £ -
Prism Sound Dream Ada 8XR Multichannel A...
ELECTRONICS Buntingford (Hertfordshire) April 15, 2025 2500.00 £
-
BASIS DEBUT GOLD STANDARD TURNTABLE
ELECTRONICS Little Walsingham (Norfolk) April 15, 2025 1800.00 £ -
-
-
-
-
CHARTWELL Ls3 5a Speakers Matching Pair
ELECTRONICS Enderby (Leicestershire) April 14, 2025 1700.00 £
-
-
Joker Bug 800 Kit HMI K5600 Daylight PAR
ELECTRONICS Kirkby Thore (Cumbria) April 14, 2025 1400.00 £ -
-
-
Shindo Giscours Monoblock Tube Preamps W...
ELECTRONICS Little Walsingham (Norfolk) April 14, 2025 2400.00 £ -
Cello Palette Equalizer Preamplfier W Su...
ELECTRONICS Hunmanby (North Yorkshire) April 14, 2025 1500.00 £
-
-
-
Kulicke Soffa 4523 AD Ultrasonic Wedge B...
ELECTRONICS Walton on Thames (Surrey) April 14, 2025 2850.00 £
-
-
-
Musical Fidelity AMS-50 Class A Power Am...
ELECTRONICS New Mills (Derbyshire) April 14, 2025 2200.00 £
-
-
-
EMT 930ST With 155ST Equalizor, 929 And ...
ELECTRONICS Wantage (Oxfordshire) April 14, 2025 3380.00 £
-
-
-
FLUKE 5520A High Performance Multi Produ...
ELECTRONICS Winslow (Buckinghamshire) April 14, 2025 3300.00 £
-
-
ACCUPHASE P-7100 CURRENT TOP OF THE LINE...
ELECTRONICS Waterperry (Oxfordshire) April 14, 2025 3500.00 £ -
KRELL EVOlution 202 SILVER POWER SUPPLY,...
ELECTRONICS Hailsham (East Sussex) April 14, 2025 2500.00 £
-
-
-
EMT 930st With RMA229, 155st, TSD15SFL A...
ELECTRONICS Lancing (West Sussex) April 14, 2025 2800.00 £
-
-
-
Blaupunkt 32/147 32 Inch HD Ready 720p L...
ELECTRONICS Merthyr Tydfil (Wales) April 14, 2025 80.00 £
-
-
-
EMT 950E - BBC Narrowline Professional B...
ELECTRONICS Prescot (Merseyside) April 14, 2025 1700.00 £
-
-
EMT 930ST With 155ST Equalizor, 929 And ...
ELECTRONICS Easington Colliery (Durham) April 14, 2025 3380.00 £ -
-
-
Lisson Grove R124 Tube Compressor Protot...
ELECTRONICS Tintagel (Cornwall) April 13, 2025 2400.00 £ -
-
3 Wmf Presto Bean To Cup Machines & Wmf ...
ELECTRONICS Abbot Salford (Warwickshire) April 13, 2025 1100.00 £ -
-
Tosoh AIA-350 Automatic Immunoassay Syst...
ELECTRONICS Wigston (Leicestershire) April 13, 2025 2420.00 £
-
Lyrec PTR -1 Frida MK II, High Serial Nu...
ELECTRONICS Leominster (Herefordshire) April 13, 2025 2500.00 £ -
-
How To Connect MacBook To TV Or Projecto...
ELECTRONICS Cannock Wood (Staffordshire) April 13, 2025 210.00 £
-
VIVA AUDIO LITTLE PRECISO 2a3 PUSH PULL ...
ELECTRONICS Glastonbury (Somerset) April 13, 2025 1750.00 £ -
Pair Zeis Ikon Ikovox CD 31-18 Klangfilm...
ELECTRONICS Stourbridge (West Midlands) April 13, 2025 3200.00 £ -
-
Prism Media ADA8 8ch 24bit 96kHz Convert...
ELECTRONICS Abbey Wood (London) April 13, 2025 2000.00 £ -
-
-
Google Glass Explorer Edition - Shale XE...
ELECTRONICS Northallerton (North Yorkshire) April 13, 2025 1200.00 £ -
Sonus Faber Guarneri Memento Palladio Sp...
ELECTRONICS Frith Common (Worcestershire) April 13, 2025 2900.00 £ -
Vintage Western Electric 124 B Monoblock...
ELECTRONICS Pontefract (West Yorkshire) April 13, 2025 3900.00 £
-
Vintage Pair Of TANNOY Monitor Red 15 Or...
ELECTRONICS Portwrinkle (Cornwall) April 13, 2025 3500.00 £ -
-
-
-
-
Marantz Model 1 Mono Tube Preamplifiers ...
ELECTRONICS Whitehaven (Cumbria) April 13, 2025 2860.00 £