For .1 to 25 Watts this is an ultra-efficient very high quality 12 inch speaker. It's really perfect for voice and guitar reproduction. Add a Pyle Pro PDBT19 tweeter to round out the high end for a no crossover no attenuation performance combination. I used two 8 Ohm Greenbacks in series to restore a 50 year old Fender combo which had a 16 Ohm output. The result was outstanding even to today's young performers who are used to lots of power. These will make any amp sing. I'm using them at home for a thoroughly pleasing experience.
Woodland Hills, CA.