Here is all 3 together:
18Sound Magnet detail:
B&C magnet detail:
RCF magnet detail(HUGE vents):
18Sound Cone detail:
B&C cone detail:
RCF cone detail:
I like this little plaque on the basket of the RCF, identifies it exactly:
18Sound and B&C stacked next to a Zv3 18 and pair of B&C 8s. The RCF is mounted and running in the 8.6 cube box underneath, directly behind my computer chair:
Thus far the RCF looks, feels, and sounds the best of the three even without break in. I have been going back and forth between the B&C and 18Sound in this enclosure for a few weeks now trying to asses the subjective sound quality. The 18Sound seems to lack attack and pitch, seems very one note wonder after 2 weeks of listening. Swapping to the B&C made a significant improvement in transient response, and the RCF so far is the best of the three. I would attribute this to the 18Sound liking a bigger box, the B&C having such a low compliance suspension, and the RCF being a proper balance. The B&C and 18Sound both feature straight profile ribbed cones, while the RCF is a curvilinear profile made of unpressed pulp. The RCF is also the only one of the three that has insulated tinsel leads. The spider diameter is similar between the RCF and B&C, while the 18Sound is quite small in comparison.
I was hot on the 18Sound because of how it measured so flat, but the raw response was deceiving and after further listening the character of the driver came out. It measures flat but seems to smear the time domain more than the other two drivers. I have the RCF loaded and plan to remeasure the big 10 cube cabs with all three drivers. The cabinet design was originally centered around the RCF, so it will be interesting to see how it measures. I also want to beat on it and see how long it takes to get it out of shape.