With the JBL K-130s 1 watt at 102 db sensitivity/efficiency rating , how loud will each JBL speaker be with Billys 50 watts placed on each of his 12 speakers?
Remember, for every 3 db increase in SPL requires twice the power. That would be an approximate 120 db of Sound Pressure Level, or SPL All the modern high power piston bass speakers of today, have lowered sensitivity ratings due to the increased mass weight of their assemblies for their high power handling. One of the popular Eminence 10″ bass speakers is rated at a sensitivity of 95 db. Which would require an approximate 250 watts per speaker to reach the same 120 db SPL produced by Billy’s JBL’s. But presently, you only have the 150 watts per speaker. You still don’t have enough power to come close to the 120 db SPL performance of Billy’s gear on stage with your NOW… 1800 watts. To get your twelve 10″ speakers to reach the same volume or loudness of Billy’s twelve 15″ speakers, you will need approximately 3000 watts to get the job done with those twelve 10″ speakers rated at 95 db.
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