ctmullins
Still fueled by beer and coconut
- Apr 18, 2008
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- Disclosures
- I'm highly opinionated and extremely self-assured
Hmmm, is 500W into an inefficient cab louder than 200W into an efficient one?
Depends on the actual efficiencies. Due to the logarithmic nature of the decibel scale, doubling the power results in a 3dB increase, which is "detectable". Ten times the power is about 10dB, which is roughly "twice as loud".
Efficiency becomes a factor here, in that a 95dB driver at 500 watts will be roughly as loud as a 98dB driver at 250 watts. (But efficiency ratings are an oversimplification, as they're typically measured at 1kHz, which is likely not the frequency of interest for a bassist.) It's pretty easy to find two drivers whose efficiencies differ by 3dB; and you'll need about twice as much wattage to run the less efficient driver to the same loudness.
Cab design is important here as well. A good cab design will maximize the efficiency of its intended driver, requiring less power. Efficiency is definitely your friend.