DRIVE UNITS BY MANUFACTURER:
D2010/852100
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Scanspeak Tweeters

NEW PRODUCT - IN UK STOCK NOW.
The Scanspeak D2010/852100 is an updated version of the D2010/851100 using modern materials and manufacturing practices. Featuring a neodymium magnet assembly, multiple rear chambers, an anti diffraction foam front and a vented pole, this tweeter offers a smooth response and sounds very natural.
Please note: Although there are visual similarities, this is not a direct drop in D2010 replacement, some minor cabinet changes are required due to the position of the connection terminals as they are now on the back of the faceplate rather than the rear chamber cover (please see pictures 2 & 3).
Naim SL2 owners will need to drill the tweeter bracket in order to fit this item.
| Resonant frequency (fs) | 550 Hz | Nominal impedance (Zn) | 8 Ω |
| Effective diaphragm diameter | 22mm |
DC resistance (Re) | 5.9 Ω |
| Ferrofluid ? Y/N | No | RMS power handling | 90 W |
| Recommended crossover | 4 kHz 12dB | Faceplate diameter | 98 mm |
| Sensitivity (2.83V/1m) | 89 dB | Cutout hole diameter | 68 mm |
Superb upgrade to my old tweeters that blew, they look so much nicer. A little bit of filing and then resoldered using crystal 505, as good as new. They will only improve with time as they wear in too.
Thanks for the review !
Will & Caroline
Excellent service from a very helpful and friendly dealer. The new tweeters are a big improvement over the 30 year old ones they have replaced. A nice upgrade and not expensive to do. Many Thanks.
Thanks for the review Alan !
Will & Caroline
Many thanks for the super quick turn around on the tweeter I ordered. Bit shocked how fast it got here actually, so huge gratitude for that. Although it was a something of job modding the cabinet to get it to fit it was good to have the warning in the product description. Sounds marvelous.
Thanks for the review Jon !
Will & Caroline
My 35 years old original Tweeters were losing some sparkle/volume and I had just replaced the second woofer in my 2.5s - so Googled to find Tweeter options. Found Willy's Hifi and the best currently available Scanspeak alternatives. Will was very helpful and I now have new Tweeters installed. It wasn't my ears - these are tons better!!
Thanks for the review Steve !
Will & Caroline
Nice to source suitable replacement drivers. Offered at a very competitive price. Can’t wait to fit and fully test them.
Thanks for the review Julian!
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
The crossover was constructed well, I just need to figure out the best way to attach it to my Kef Concertos as they are bigger than the ones supplied by Kef that are mounted on the front of the baffle board.
Very nice deep bass look amazing with my custom made speaker
Great speedy delivery and very easy to fit. The plastic in my drivers had perished and they had suffered one too many parties! No need to make any adjustments (someone above did suggest that). I just screwed them in and the foam compressed into place. Before and after below (before I changed speaker number 2). Thank you!
Thanks you very much for the kit. I found back my kelidh after nearly 27 years. The filter were really dead and one tweeter damaged. Very happy to decide to repair/ upgrade rather than change. I found back tone and stereo stage like in the old days probably even better.
I didn't know soldering material was so important thanks for providing some.
Quite easy to recap filter and change tweeters.
Also wanted to thank you for this little note hand writen in French just for me. Very nice attention to see.
Next step is the next question do I change first the drivers with the monacor as I ve lost dust caps but they still work properly or do I change my old arcam alpha 8. Is there really something to gain moving to an newer arcam sa10 or Radia a5? Are newer amplifier much better than the old days one?
In addition to my post from 17/11/2025, here is some information on the final status of the project: Saving the Mission 752 loudspeakers.
Once it was certain that it would be possible to revise the loudspeakers (thanks to Willy), the desire to also replace the low-midrange drivers and convert the crossover to a high-quality version quickly arose. I was fortunate enough to be able to purchase two Burmester 949 MKII midrange drivers from Audax to replace the existing low-midrange drivers (52LFHDA – still available and can be sold). They are practically identical in design, but significantly more refined and powerful. Revising the crossover proved somewhat more difficult because the values of the coils were not printed on them. However, they can be determined by measuring the originals. Mundorf resistors, coils and capacitors of the two highest quality grades were installed. These are not exactly cheap, but once the speaker is finished, the difference is clearly audible. The crossover was also modified slightly. A shunt was integrated into the high-frequency branch. Following a tip in a forum, the crossovers were also moved to the outside. They are currently still on the speaker without a housing. The metal housing provides perfect shielding. As the Willys tweeters are very efficient, they were ‘damped’ slightly. The final cost of the conversion was approximately £600. In return, the speakers now perform at a level that far exceeds their original condition. An exciting project that was only made possible by Willys – thanks to Caroline & Will ❣️
