You can't really have a speaker secret unless you design the speaker yourself so all the info should be on the cabinet product page.
"The 2x12 Cabinet features Celestion Vintage 30's and the 4x10 Cabinet features Celestion G10 Greenback speakers."
Very good question...I'm curious too...I haven't gotten into the PRS cabs yet....although I've played through a PRS cab before...reminded me of a Mesa....my cabinet of choice is a Mesa recto 2x12 loaded with v30's...I currently have two of these and they flat out rip...I run my Recording Amp through one of these... I also have v30's in my Rivera's as well. The subtleties are interesting...it's always hard to know how much is the speaker or the cab...or simply which speakers are broken in better.
We even clone them in Australia!Well, that's not exactly the case. The Vintage 30 is the perfect case in point because there are 3 versions of this speaker with similar/same labels and names but made in different plants with different respective tones. Marshall started the craze with a unique design that they sent to Celestion for production. This became the G12H30 "reissue" for the 4001 and was a hit, but because it was proprietary to Marshall, Celestion deviated slightly from the design to create the V30.
Today, V30s are made in two locations, England and China. For example, the private labeled V30s for Mesa/Boogie's version is made in England exclusively. The V30s in many other brand cabs are from China and sound different to my ears. I've not disassembled my pine 2x12 to check out the point of origin. Anyone done this?
On at least the Sweet16 combo, I've seen this loaded with a 'specially voiced' WGS ET65 speaker. Proprietary? Different doping? Is it found in any other application? I'm willing to bet PRS didn't just slap arbitrary speakers into their otherwise carefully designed cabs.
BTW it always amazes me how people don't take their cab and speaker selection seriously enough...it can make or break your sound....I love trying different combinations out...no two cabs are the same...the Mesa cabs i have are consistent but not 100% the same and each imparts its own unique flavor.