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Heybrook HB1, JPW P1, AP2, AP3 and Snell type K Bass Units

February 16, 2017

Heybrook HB1,  JPW P1,  AP2,  AP3 and Snell type K Bass Units

Vifa M21WG-09-08 Woofer

This classic drive unit was conceived by Vifa in the mid to late 80s specifically for inclusion within high performance sealed baffle designs of moderate size (20-40 litres), with a final rolloff of 12dB / octave thus offering good bass extension and immediacy (fashionably now called PRAT - Pace, Rhythm, Attack, Timing) - without the 4th order / 24 dB octave rolloff and corresponding poorer transient response of ported enclosures.

Selected by legendary speaker designer Peter Comeau for his very fine and multi award winning Heybrook HB1; other designs that made good use of this driver include the JPW P1, JPW AP2, JPW AP3 and the Snell type K - all fine speakers to this day and well worth repair.

The M21WG-09-08 has a critically designed motor system comprising a very high compliance suspension (Vas 81 litres) with a surprisingly modest magnet coupled to a cast magnesium chassis and a treated pulp fibre cone. The highish Qms value gives this drive unit a lovely open midrange which easily integrates with 25mm dome tweeters hence it's popularity in various successful historic designs.

Like so many drive units from this era, the original M21WG-09-08 suffered from ageing / UV degradation of the foam surround hence many HB1's etc. turn up on auction sites with missing bass units or crumbling surrounds.

This new version is 2016 manufacture with an improved formula foam surround.

One of the few excellent 8" drivers suitable for 2 or 3 way infinite baffle enclosures.

Direct replacement for the following models:

Heybrook HB1,  JPW P1,  JPW AP2,  JPW AP3,  Snell type K.

These units are now manufactured at the Scanspeak facility in Denmark and may be badged as Vifa or Scanspeak.

Click on the image for more details:

Vifa M21WG-09-08Willys-Hifi Ltd - the specialist UK loudspeaker parts company






Also in Willys-Hifi Loudspeaker Spares News

Proac Foam Surrounds

April 26, 2019

Proac Response and Studio repair parts.

Scanspeak logo

We now stock genuine foam surrounds for the highly popular Scanspeak 18W Classic Series Midwoofers, thus enabling cost effective repair of various historic Proac loudspeakers that were fitted with oem versions of the 18W/8542 (and its polypropylene coned derivatives) without the expense of changing complete drive units.

Some of the models covered:

  • Studio 1
  • Studio 100
  • Studio Tower
  • Super Tower 0, MkII
  • Response 2
  • Response 3
  • Response 3.5

These spare parts are direct from the Scanspeak factory, for more info click on the image below or click HERE.

Scanspeak 18W/8542 Foam Surround

Phone helpline: 01702 523999 or contact us

Willys-Hifi Ltd - the specialist UK loudspeaker parts company

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Website upgrades for trade and non EU customers

November 30, 2018

Trade customers: EU VIES integration.

Trade customers within the EU can now enter their VAT identification number within our shopping basket or their customer account page for validation by VIES, the process takes a few seconds and if the details entered pass scrutiny, the VAT content will automatically be removed from the total due. You can also save your EU VAT details to your account for future use. This site upgrade gives a far more streamlined checkout process for bona fide EU trade customers.

A picture of the basket input field (highlighted) is shown below:

EU VAT ID demo

 Non EU customers: VAT free sales.

For reference, all of our products now show VAT inclusive / exclusive prices.
Customers outside of the UK/EU territories are exempt from UK VAT - our website will automatically offer you VAT free sales based on your geo location and remove the VAT content accordingly.
If you have any questions or comments please let us know - constructive criticism always welcome :0)


Phone helpline: 01702 523999 or contact us

Willys-Hifi Ltd - the specialist UK loudspeaker parts company

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16 Ohm L-Pad Attenuators

November 23, 2018

16 Ohm L-Pad Attentuators now in stock.

Following many customer requests we now have 50 watt 16 Ohm L-Pad attenuators ready for immediate dispatch from the UK. These elusive spare parts are perfect for restoring vintage loudspeaker models with L-Pads such as the classic AR 4x and many other 15-16 ohm models from the valve era; also suitable for vintage guitar amps featuring EL84 single ended or push - pull output stages with a fixed 16 ohm output tap.

UK / EU Exclusive Product.

Click on the image below for more details:

16 Ohm 50 watt L-Pad attenuator

Phone helpline: 01702 523999 or contact us

Willys-Hifi Ltd - the specialist UK loudspeaker parts company

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