All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
18W / 4531G00
The Revelator 18W series of drivers continue the enviable trend set by the smaller 15W range. There's a few different versions - they are all excellent.
This drive unit is available in 4 and 8 Ohm impedance.
Popular among high end & esoteric designers - and with very good reason.
Featuring unique sliced / damped cone technology & huge high efficiency ferrite magnets, these no compromise drive units offer superlative sound quality with outstanding midrange resolution and extension.
This woofer is 4 Ohms ; the 8 Ohm version is here : 18W/8531G00
Resonant frequency (fs) | 33 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 5.20 | DC resistance (Re) | 3.4 Ω |
Electrical Q factor (Qes) | 0.38 | RMS power handling | 70 W |
Total Q factor (Qts) | 0.35 | Sensitivity (2.83V/1m) | 90 dB |
Equivalent volume (Vas) | 41.9L | Chassis diameter | 182.2 mm |
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I recently installed the Linn Keilidh active Tweeter Upgrade Kits from Willys Hifi. It works great! It took
1 month to get here snd had to pay an additional 90 euros in taxes and customs fees but it was well worth it!
The foam grill covers of my Mission 770s crumbled into dust many years ago. Only recently was I able to find what I thought would be a suitable replacement. Everything about the process went smoothly. The foam cut easily, looks good and, to my ears , is audibly transparent.
Finally got my electricity back today after the storm on Friday. Initially I was a bit apprehensive, as I had no experience in electronics. As I followed the colour coded looms, it got easier and more straightforward. Guess what! My Mission 753s sound better than they ever did in 1998 when I bought them brand new. New crossovers also brought one of my tweeters back to life (was dead for ten years) What a quality upgrade, worth every single penny. Willy and Caroline, you guys are legends.
Has fixed the slight grainy sound on my old Mission 771s. The tweeter had a stain on the back suggesting the fluid had escaped. Make sure you release(unsolder) the coil wires before splitting the tweeter. Audax have replacement tweeters TM025C1 albeit 8 ohm which is another way to go.
Couldn’t be happier, more detail, more clarity. Vocals massively improved and less harsh sounding. Thanks Willys hifi.