DRIVE UNITS BY MANUFACTURER:
D3004/604010
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Scanspeak Tweeters

This compact tweeter is the big brother of model D3004/604000 and features the same pure Beryllium dome but with a larger rear chamber for a very low Fs of just 450 Hz.
Beryllium offers an ideal weight to stiffness ratio with high internal damping; the transient response of this tweeter is superb and the sound is fully comparable to the renowned full size Illuminator and Revelator tweeters.
The dome features a protective multi-hex grille making it ideal for car doors. A solid choice for high-end compact DIY / home-built monitor speaker and custom in-car applications. If mounting in a car door please check the projection of the rear chamber.
| Resonant frequency (fs) | 450 Hz | Nominal impedance (Zn) | 4 Ω |
| Effective diaphragm diameter | 26 mm | DC resistance (Re) | 3 Ω |
| Ferrofluid ? Y/N | No | RMS power handling | 50W |
| Recommended crossover | 2.0 kHz 18dB | Faceplate diameter | 62mm |
| Sensitivity (2.83V/1m) | 90.2 dB | Cutout hole diameter | 50 mm |
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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!
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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!
