All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
SB17MFC35-4
UK STOCK ITEM
The SB Acoustics SB17MFC35-4 is a 6 inch 4 ohm midwoofer drive unit featuring a polypropylene cone and a vented cast alloy chassis. Excellent extended response and very easy to work with. One of our favourite drive units !
Also available in 8 ohms: SB17MFC35-8.
Resonant frequency (fs) | 30 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 5.2 |
DC resistance (Re) | 3.1 Ω |
Electrical Q factor (Qes) | 0.3 |
Max power handling | 60 W |
Total Q factor (Qts) | 0.28 |
Sensitivity (2.83V/1m) |
90dB |
Equivalent volume (Vas) | 45L | Chassis diameter |
171mm |
I bought this as a replacement unit for the original peerless driver in a NAD 804 that had started to suffer from a scratchy voice coil. It slotted straight in and as advised by Willy is actually a slight upgrade on the original. It sounds great and I will get another at some point. Packaged very well and Quickly dispatched. Its good that Willys - hifi exist and offer professional advice to hifi enthusiasts.
Thanks for the review Phil !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Swapped out the 30 yr old AlCap capacitors for the Audyn Q4 on Wills recommendation (along with a ferrofluid change). What a difference, added so much more definition and clarity. Very impressed. Audyns are a fair bit bigger size wise but fitted easily enough on the board and the access aperture on the TDL Studio 1's.
Good quality, fast postage, perfect! Thanks
Can fault the service and you always seem to have what others don’t, this can be critical when your hobby involves restoring vintage hifi .
Excellent driver and superb service and advice from Willy's hi-fi. Would certainly recommend and I will definitely be using again. Super fast delivery and great prices
They offer great advice genuinely helpful and knowledgeable.
Excellent service.
Very happy with this replacement part, especially once id fitted it correctly!! Sounds great so know where to go when the other one fails. 👍