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All systems go !
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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Speaker grill foam for Harbeths
I was concerned that they may not look like the original binding posts on my Rogers LS6 speakers but they are a perfect match. Quite solid. Shipping was quick and easy. I recommend the product and Willys Hifi.
Greetings from Quebec, Canada.
Product as described, easy to cut & fit.
On reflection having now fitted the foam, I wish it was 15mm to 18mm or even 20mm thick. This is not a complaint. For a small speaker under 30cm high it’s perfect. For a larger speaker I feel a thicker sponge would hold its structure more pleasingly, its aesthetics, but important for the finished look.
I’ve been building my own home cinema as a complete DIY project and reached the stage where I needed some decent acoustic foam for my speaker panels (also DIY!) so I picked up 3 large sheets from here. They were sent quickly, packed well and moreover, are of excellent quality. With them being folded into the shipping box they were slightly creased but after leaving them out overnight on a flat surface, the creases fell out completely. They’re now in place and doing their job brilliantly. Cheers Willys Hifi!
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.
