TWARON® is a p-phenylene terephthalamide (PpPTA) Aramid synthetic fibre (phew..), a close relative of Kevlar and as such has unique properties that can be utilised for very effective sound absorption within speaker cabinets. The mechanism for attenuation is Twarons ability to efficiently convert vibration into low level heat. This innovative product is very different to standard wadding.
Twaron Angel hair is easy to work with and non-aging. It has a very high expansion ratio and will always try to fill the available space - all that is required is 3-5 grams of Twaron per litre of internal cabinet volume, making it very economical and far less likely to overdamp the midrange which can happen with traditional waddings such as wool, polyester or bonded acetate fibre (BAF).
Produced by Thüringische Institut für Textil- und Kunststoff-Forschung (TITK), exclusively for MUNDORF, Germany.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
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17v3.4.4
High grade MKP crossover capacitors from the worlds leading capacitor supplier.
3% tolerance 0.33uf - 47uf.
Featuring the proprietary Mundorf high precision EVOLUTION winding technology, these capacitors have an unusually narrow ultra high purity base foil that is metallised to the highest possible molecular thickness before being parallel wound in disc form - this process results in a very large active surface area with ultra low microphony; the cores are then potted into special non-resonant housings.
These hand spooled capacitors offer an extremely low ESR (equivalent series resistance). Asymmetric leads (larger values) allow for x or y mounting.
Highly dynamic sound with great transparency.
All values available from 0.1uf - 47uf, 450V (smaller values rated at 650V).
Click the picture below for the full details:
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
The Accuton C51-6-286is an esoteric, high end midrange drive unit with a wide, extremely low distortion bandwidth of between 800 Hz - 6Khz.
Featuring an ultra hard 51mm (2") ceramic sapphire dome (corundum α-Al2O3), this midrange unit is housed within a cylindrical 86mm Cell Concept body with a discrete clamping system for invisible and secure mounting. With text book frequency and distortion characteristics, this state of the art unit represents the highest of high end sound reproduction and is a superb addition to the Accuton range of high end transducers, bringing true top level performance to home constructors and professionals alike.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
Premium quality 5W and 10W MOX (metal oxide film) 2% power resistors.
Primarily designed for loudspeaker crossover applications. Non - inductive characteristics makes them benign at medium to high / pulsed frequencies. All values have a tight tolerance of ± 2%. Very well regarded and good value.
Values available: 0.1Ω - 56Ω 2%
Case size: 24x8mm; leadout: 35mm bilateral, 0.8mm wire.
Values available: 0.1Ω - 56Ω 2%
Case size: 52x8mm; leadout: 35mm bilateral, 0.8mm wire.
Mundorf Authorised UK dealer.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
Premium bipolar electrolytic capacitors made in Germany by the worlds leading capacitor supplier. Excellent step upgrade over far eastern sourced capacitors such as Alcap.
High grade loss loss bipolar electrolytic capacitor for loudspeaker crossover networks and audio coupling applications. Plain (smooth) aluminium foil.
The PLAIN series offer excellent build quality and smooth detailed sound characteristics.
Values available: 1uf - 47uf, 5% tolerance, 70V.
Bipolar electrolytic capacitor for loudspeaker crossover networks and audio coupling applications. Raw (etch roughened) aluminium foil results in a larger active surface area - capacitance is relative to surface area hence higher values are possible.
The RAW series offer large capacitance in a smaller form factor and are fine sounding.
Values available: 56uf - 680uf, 5% tolerance. 56uf-100uf rated at 100V, all others 63V.
Mundorf Authorised UK dealer.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
The Morel Integra range comprises 3 exquisite single point source coaxial drive units. Available in 4, 5 or 6 " and incorporating many of the Morel proprietary innovations and technologies, these time aligned drive units are equally at home in domestic or top quality in-car installations.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
Stock is currently being photographed and will be added to our website soon.
The comprehensive Mundorf catalogue can be found here: 
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
We now stock genuine replacement dome / voice coil assemblies for the highly regarded D3004/660000 Revelator tweeter. This easy to install assembly avoids the cost of replacing the complete drive unit - ideal for repairing a poked dome or open circuit voice coil.
Click the picture or title below for more details:
Domes for other models can be found by clicking the links below:
Replacement dome assembly D2905/930000
Replacement dome assembly D2905/950000
Replacement dome assembly D2905/970000
Replacement dome assembly D2905/990000
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
Scanspeak have released 2 new Revelator range drive units: a new 18cm 8 ohm midrange based on the 18M/4631T00 featuring the renowned sliced / glued cone technology and an all new 28cm / 11 inch subwoofer unit featuring a 3" voicecoil and patented paper sandwich cone.
Click the titles / images below for full details:
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
NEW PRODUCTS.
Scanspeak have released 2 new drive units - these state of the art units feature elliptical voice coils with copper clad pole pieces and airflow optimised magnet systems. The original concept was the brain child of the late great Birger Jorgensen, the project design being finalised and brought to production by respected designers Dennis Hansen and Simon Møller Nielsen.
The elliptical motor assemblies break traditional drive symmetry: the electro-magnetic driving force from the voice coil is not equidistant to the cone / dome surround therefore the usual breakup and high order bell modes do not propagate - mistermination and antiphase issues at the diaphragm / surround junction are also absent. Both drive units are very wide banded with no breakup modes that require any damping. Distortion figures are incredibly low whilst sensitivity is high. These drive units have discrete mountings - various colour trim rings are available.
The Ellipticor range are no compromise designs that set a new bar for high end drive units.
Click pictures or titles below for full details:
Willys-Hifi Ltd - the specialist UK loudspeaker parts company
Audax were true innovators and released many cutting edge technologies never seen before such as the HDA (High Definition Aerogel) cone - a unique product based on acrylic polymer gel containing carbon and kevlar fibres in perfect molecular alignment. HDA was the product of extensive research for the perfect cone material that is both lightweight, rigid and displays high internal damping. Another breakthrough technology was the brilliant but sadly short lived 'gold eye' HD-3P: the Audax HD-3P tweeter was a piece of exotic, visionary engineering from the 1990s. Fundamentally a piezo tweeter, it featured a gold spattered elliptical diaphragm formed onto a nitrogen filled balloon. Technically and sonically brilliant but fatally flawed due to gas loss and barometric pressure changes; many are now defunct with low / no output or exhibit the 'crinkle of doom'. We supply a replacement kit for the HD-3P here: Audax HD-3P replacement kit.
Here are some drive units for HFW Design range and others - click the links:
Most of the Audax units that we stock are in their original boxes - some are incredibly rare and are probably the only ones available anywhere.
Willys-Hifi Ltd - the specialist UK loudspeaker parts company