All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
MR13PNW-4
The SB Acoustics Satori MR13PNW-4 is a high performance 5 inch 4 ohm midrange loudspeaker drive unit featuring a unique composite cone made of paper and Egyptian Papyrus™ fibres. This drive unit is essentially the same as the MR13P-4 but features an undyed cone presented in it's natural finish. The colourant added to the MR13P-4 adds a touch of damping at the upper frequency extreme as can be seen if you carefully compare the frequency response graphs.
Also available in 8 ohms: MR13PNW-8
Resonant frequency (fs) | 41 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 2.8 |
DC resistance (Re) | 3.3 Ω |
Electrical Q factor (Qes) | 0.25 |
Max power handling | 30 W |
Total Q factor (Qts) | 0.23 |
Sensitivity (2.83V/1m) |
91dB |
Equivalent volume (Vas) | 19.4L | Chassis diameter |
132mm |
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.