How is the new CRATE powerblock... Really!!

[ratherdashing]

Re: How is the new CRATE powerblock... Really!!

SPL is a function of power into the speakers, and the speakers don't care if the power is generated by tubes, semiconductors, or AC generators.

Perceived 'loudness' does vary with an awful lot of parameters, but SPL is SPL and it's totally measurable.

Are we talking about the same thing? SPL = sound pressure level, measured in decibels. It has little to do with the amount of power going into the speakers - it is a measure of the pressure of the sound waves created by the speakers.

Plug a 100W amp into an inefficient speaker, and it will give you a lower SPL reading than an efficient one.

[AdmiralB]

Re: How is the new CRATE powerblock... Really!!

What does speaker efficiency have to do with tube power v. SS power? He said it takes 3W SS to equal 1W tube; I say that's not true, a watt is a watt. I ran a 50W Marshall and a PB side by side into various V30-loaded cabs; when the PB is bridged into 8 ohms (150W, allegedly) it is a LOT louder than the Marshall. Into 16 ohms (75W, approx) it's not quite as loud.