DRIVE UNITS BY MANUFACTURER:
D2008/8512
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Scanspeak Tweeters

Features include multiple tuned rear chambers, ferrofluid cooled voicecoil and a hermetically sealed enclosure. This unit has been in production for more than 3 decades and is still an excellent performer ~ a perennial favourite (possibly the most universally liked of all time) found in many DIY and mainstream designs. The sound characteristic is very good with excellent detail resolution / smoothness and is unfatiguing when used for extended periods.
Suits : Linn Kan Mk1, Sara, Isobarik, Rega Ela, ProAc Tablette EBT, Studio EBS and a huge range of others.
This is the ferrofluid cooled, smoother sounding version of the D2008/851100.
Substantial upgrades for this unit are available here: Hiquphon
| Resonant frequency (fs) | 800 Hz | Nominal impedance (Zn) | 8 Ω |
| Effective diaphragm diameter | 20mm | DC resistance (Re) | 5.7 Ω |
| Ferrofluid ? Y/N | Yes | RMS power handling | 90 W |
| Recommended crossover | 3kHz/12dB | Faceplate diameter | 92 mm |
| Sensitivity (2.83V/1m) | 88 dB | Cutout hole diameter | 70 mm |
D2008/8512
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
I tried this uprated capacitor through sheer curiosity and am pleasantly surprised with the results. So far, and not too many hours in, it’s giving a slightly smoother edge to the top end and has solved an issue I had regarding some hardness to the sound. I’m impressed enough that I’ll look to replace the mid range caps in the future.
I came across some info that after many years these old B&W P4's tweeters degrade. As I grew older, (with reduced hearing of course), I never noticed this gradually deterioration over the years. So I bought the replacement tweeters from Willy's which was picked up just a few days later in Norway. They were mounted in 30 minutes,.. and what a change! My HiFi sounds as a new set. Thanks!
New Foam covers supplies by WHF have completely changed the appearance- they look brand new! Great quality foam, very reasonably priced and quick delivery. Delighted with they now look and sound - will hang on to them forever now.
Excellent upgrade, works perfectly with the speakers it's just soldier and play, they takeaway the over intensity of the original tweeters.
I've had my Mission 734s for about 30 years and for the last five or so the bass units have been falling to pieces. I was about to take the speakers to the tip, but didn't have the heart knowing how capable these used to be. I did a little internet research and these Monacor replacements appeared to do the job. Next day delivery from Willys was impressive, as was the killer sound once the replacements were fitted (which was a simple job). I'd forgotten how these speakers make the windows rattle. Very happy customer!
