DRIVE UNITS BY MANUFACTURER:
DRIVE UNITS BY MANUFACTURER:
Morel MDM 55 Midrange
The Morel MDM 55 is a hybrid 54mm (2") soft dome midrange drive unit from the Classic series. This hand assembled unit has a low resonance of just 380 Hz and a wide linear bandwidth, the response between 2-5 kHz is flat ± 2dB or better. This unit has a very compact square faceplate allowing close spacing of drivers.
Features include an Acuflex hand coated soft textile dome, 54mm Hexatech aluminium voice coil, a vented hybrid mixed magnet assembly and a critically tuned and damped aluminium rear chamber.
Power handling is excellent at 200w nominal, 1000w peak. As usual with Morel products, design and build quality are top notch.
A full datasheet can be downloaded from the bottom of this page.
Resonant frequency (fs) | 380Hz | Nominal impedance (Zn) | 8 Ω |
Effective diaphragm diameter | 54mm | DC resistance (Re) | 6.2 Ω |
Ferrofluid ? Y/N | Yes | RMS power handling | 200W |
Recommended crossover | 1.2 kHz / 18dB | Faceplate (square) | 87 mm |
Sensitivity (2.83V/1m) | 89.5dB | Cutout hole diameter | 76 mm |
MDM55
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I’m no expert when it comes to speakers, but after some research (and a strong recommendation from ChatGPT), I went with the SB Acoustics SB65WBAC25-4 as a reference full-range speaker in this size range.
Having now tested them, I can confidently say they’re probably the best speakers I’ve ever owned. The clarity is outstanding—every detail comes through with incredible precision. The bass is surprisingly full and punchy for a speaker this size, and they handle power impressively well. For anyone looking for a high-performance compact full-range driver, these are hard to beat.
Item as described and arrived quickly - and did the job. However, I suggested that anyone replacing speaker foam makes sure they have a very large pair of sharp dressmaking scissors as it was not easy cutting to size without producing a ragged edge (which I managed to hide short of a close inspection)!
Great service as always quick delivery
Thanks
Ordered two of these tweeters on Friday afternoon NZ time, amazingly they had arrived in Auckland the following Tuesday morning, arrived in my home town of Christchurch couple of days later and were promptly installed. Seem to be doing and sound as they should, thank you for your service!
Excellent service well packed and very happy with tweeter after the work had been done.
Definitely would use again