Eminence Beta 8A speaker. The Eminence Beta 8A is a 8" 8 ohm speaker for all bass applications including bass guitar cabinets. Beta-8A is a 225 watt RMS 8" woofer.
ΣS2153 - Dual 15" Two Way Full Range Speaker - ΣS Series Wood Speaker - Beta Three Technology Creates Sound Enjoyment
Beta Three
Amazon.com: Eminence American Standard Series Beta-6A 6" Mid/Bass Pro Audio Speaker, 175 Watts at 8 Ohms : Musical Instruments
Coral Beta 8 Fullrange Loudspeaker Measurements Data and Information Full Range