Played a vintage 1956 fender pro amp with a Gretsch Black Falcon at guitar center yesterday. Played it after blackface RI Twin Reverb, Deluxe, and Stapleton Princeton, as well as a Tone King Imperial II. Of all the amps it seemed to be the weakest. Are 15” speakers just less punchy at mid volume or is this just how it goes with vintage speakers, old amps? Was interested in buying a 15” amp, but this amp may have changed my mind. Any commentary holler back.