Originally Posted by notnyt
The B&C stuff is meant to play loud in pa type scenarios. They're not bad, there are just better options if fidelity is your ultimate goal without requiring lots of SPL. Drivers like the JBLs I listed have lots of tech to improve linearity and reduce distortion. They're very low inductance and have differential drive motors with shorting rings. The AE is similar to JBL, also low inductance and very linear. I've heard all of the drivers mentioned but not the lower end B&C you linked.
Does SPL say anything about actual distortion?
Maybe, just maybe, these pro drivers have to play loud with very acceptable distortion, and once you use them for home alplications, with lower SPL and excursion, the distortion goes significantly lower...
15PLB76 and 18SW115 is like night and day.
PLB76 has curved cone, paper-ish look. 18SW has straight, heavier, stiffer, better impregnation.
PLB76 has ceramic ring magnetic structure, older motor structure and smaller coil. SW115 has neodymium magnet, newer motor structure with significant amount of optimalisations, larger beafier coil. It is not only more powerfull driver. It's more rugged and refined device. Less distortions, especially for excursions over 4mm.