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Morel CAT 378 Tweeter
Categories: 0.75 - 2" (19-50mm) Dome Tweeters Morel Tweeters
The Morel CAT 378 is the modern updated replacement for the legendary MDT-37. This high efficiency horn loaded tweeter features a field replaceable hand coated 28mm Acuflex textile dome, a large ferrofluid cooled Hexatech aluminium voice coil, a vented ferrite magnet system and a tuned / damped rear chamber. This tweeter is ideal for low powered valve amps and has a detailed, unfatiguing sound with a gently downward sloping response - excellent for taming 'live' rooms with hard surfaces. Recommended frequency use: 2000-20,000 Hz. High power rating of 200w nominal, 1000w peak.
A full datasheet can be downloaded from the bottom of this page.
Resonant frequency (fs) | 700 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 | 94mm |
Sensitivity (2.83V/1m) | 93 dB | Cutout hole diameter | 72 mm |
CAT378
Excellent customer service and good prices.
Thanks for the review Simon !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
I've needed something like this for years, fantastic product and a lovely company to deal with. Won't be my last purchase from them
It was a nice experience to send the old filters to the UK (from the Netherlands) and get them surprisingly fast back (taking the overseas shipment into account). At first I did it wrong since I also replaced the drivers that could also be connected in a 4/6 Ohm (double coil). But after correcting and calibrating my receiver the speakers sounded great.
Thanks!
Used in a DIY LS3/5a project, with Morel CAT 298 tweeters and custom crossovers using ClarityCap CSAs. Super pleased with these woofers! I think they synergize well with the “live” thin-wall LS3/5a cabinets. The sound is neither bloated, nor thin, just revealing, spacious, and with very lifelike tone. I’m so happy with the results of this project and had a great buying experience with Willy’s. Thank you!!
I used this in custom LS3/5a speaker enclosures along with Monacor SPH-135AD woofers and custom crossovers using ClarityCap CSAs. The tweeters have a very pure sound, revealing microdetails and having a naturally smooth, response. The sound is never peaky or rough. I’m very happy with my purchase and with the service from Willys. Would buy from again for a future project!
I bought a pair of Acoustic Research AR28LS speakers back in 1985 for £129 ! After about 15 years the foam suspension had started to perish and completely failed in 2006 following a rather loud teenage party. I was never happy with the Eminence Beta-8A replacements bought from a local shop at the time, as the bass resonance was far too high. Finally decided to replace them with Monacor SPH-8M and the speakers now sound as good as new. Arrived quickly and no problems fitting. Many thanks.