Showman, Vibroverb, Vibroclones, replaces JBL D130. 15″, 40oz boosted AlNiCo magnet, 60 watt, 2″ voice coil, curved cone. Loud, smooth, uncolored, compressed at higher volumes. Available with paper, aluminum, or the large H screen dome for more warmth.
Aluminum: Very bright, almost piercing highs akin to vintage JBLs. Good for crystal cleans, but avoid for even slight distortion.
Paper: High end is tonally between the other dome types, more piercing only under heavy pick attack. Good for brighter cleans and slight overdrive.
Large H (screen cloth): Allows the high end to be present but not overbearing. Good for warmer yet articulate cleans, but also moderate overdrive.