Great speaker. Lot of sound in smallest/lightest possible package
JBL really did their homework on this product. I had a pair of PRX512Ms and didn't like the hole in the midrange (typical of all 2-way speakers) or the annoyingly audible noise gate that would cut off soft passages and reverb trails during low-volume performances. I took a chance on getting a PRX635 to replace a pair of PRX512M, and I couldn't be happier. It may seem like an odd choice, but it totally works for me. They sound much better and more "full-range" than the PRX512M and have none of the annoying gating nonsense that the PRX500 series had. It's smooth and quiet (meaning not noisy) and sounds great even at low volumes. I can rehearse in my spare bedroom while my small children are sleeping, and it sounds great even at a volume that is quiet enough to let everyone sleep, and yet sounds even better the more you crank it up. The paper midrange driver is the secret. It fills the midrange hole perfectly and sounds smooth as silk. It's big, but not too big. I can carry it by myself, even up and down stairs. It really is an amazing amount of sound in such a relatively small and portable package. It's as small and light as it could be given today's technology. You won't sound better than you do through these speakers. My PA now sounds better than anything anyone else has going in my area, and is even better sounding than most of the house sound systems at the local venues. I use it with acoustic guitar (Taylor 614CE and Epiphone Masterbilt), keyboards, some electronic instruments, a Shure Beta 58, and a DBX1066 with a Mackie board. It's freakin' awesome. My PA now sounds totally pro. This is the live sound I have been seeking for decades, and now I have it.