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Morel CAT 328-104 Tweeter
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Morel Tweeters
104mm faceplate version

UK STOCK ITEM
The Morel CAT 328-104 is a modern updated version of the legendary MDT-32S with a 104mm faceplate. Featuring a field replaceable 28mm Acuflex textile dome, a large ferrofluid cooled Hexatech aluminium voice coil, a vented ferrite magnet system and a critically tuned / damped rear chamber, this tweeter is remarkably transparent and is a very good performer at this price point. Recommended frequency use: 2000-20,000 Hz. Substantial power rating of 200w nominal, 1000w peak.
A full datasheet can be downloaded from the bottom of this page.
| Resonant frequency (fs) | 650 Hz | Nominal impedance (Zn) | 8 Ω |
| Effective diaphragm diameter | 28mm | DC resistance (Re) | 5.2 Ω |
| Ferrofluid ? Y/N | Yes | RMS power handling | 200W |
| Recommended crossover | 2khz | Faceplate diameter | 104mm |
| Sensitivity (2.83V/1m) | 90 dB | Cutout hole diameter | 72 mm |
CAT328
The MOREL CAT-328 is the recessed plate version of the CAT-308. The primary advantage of the recessed plate is that it minimizes the mild horn loading coloration that the CAT-308 faceplate creates.
There are two versions however: A 110 mm diameter version and a 104 mm version. The 104mm version takes up less front baffle space.
The MOREL CAT-328 is a very rugged, high quality tweeter. It can be crossed over at 4KHz, 6dB per octave without burning out. It also has excellent dynamic response without compression and it sounds very detailed and airy.
Thanks for the review - we agree, this is a great tweeter !
Will & Caroline
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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.
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!
Excellent service from Willys-Hifi. Caroline was very helpful and patient when answering my queries. Please be aware that some soldering is required when connecting the tweeters. Something I haven't done since I was at school over 40 years ago! They do sound good though, listening to Smoke on the Water as I write , wow 😆
