cable break in

Nsgarch, I am plugging in the correct number. I don't think that the V (I don't know where you get 40 volts) that you are using is correct. Why use V at all, when we have R and P and a formula to calculate I?

24.6 V is the correct voltage at the amp to give 150 watts into 4 ohms.

As I have stated before, the amperage from the amp to the speaker will always be higher than the amperage to the amp from the wall, since the voltage applied to the speaker for the same wattage as the amp will always be lower than from the wall (120 V). I don't know of any speaker requiring more than 120 Volts for them to work!

With respect, Bob P.

Bob, I think what you're forgetting is that the voltage output of a given amp is a constant just like the voltage in a wall socket. The exact amount of voltage is is a function of the gain multiplier the amp is designed for, which for most amps (regardless of output capacity in watts) is about 25dB +/_ which translates into about 60V +.

Amp output in watts is determined by the strength of the input signal as you turn the volume on the preamp up or down. And the current (which varies with the amount of watts the amp is putting out at different volume levels) is a function of the impedance of the load being driven.

So what I'm trying to say is it's the watts that an amp puts out that changes with the volume. And since the load (usually) and the voltage are constant, the only other variable is the current. That's why little amps run out of gas (clip) when trying to drive current-hungry speakers (like big multiple driver boxes or stats with low impedance) because they can't get the watts/current they need to produce decent sound pressure levels.

So thinking of an amp as a great big "equal sign" with ohms laws on each side in a balanced equation is not how things actually work, plus there's also the additional issue of amplifier inefficiency to take into account.

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Break in takes about 2 weeks average playtime. Biggest differences occur around 48hrs. By the way, I've found MIT shotgun or better level have always outperformed other cables...I've owned alot..I mean ALOT!!

>>Break in takes about 2 weeks average playtime<<

NO NO NO. There is no "average" time for cable break in. It depends on the conductor, conductor geometry, and dilectric. It's different for all cables. Same thing with "biggest differences"; some are linear, others are not. Ask any cable designer.
Your opinion is erroneous and misleading. Readers should take it as your opinion as it is not based on any empirical data.