Q: Assuming impedance is not a variable and is just a constant 8Ω, if a single sinewave is played through an amplifier at a constant voltage, would adding a second sinewave of different frequency yet equal amplitude as the first change the resultant power (watts) in any way? Same voltage, same impedance... one vs. two sinewaves.
A: No. In order for power to rise voltage and/or current would have to rise, which doesn't happen in this case. All that you'd get with adding the second sine wave is a complex waveform, with no increase in voltage or current. All sound content consists of complex wave forms. - Bill Fitzmaurice
That's what I figured. Thanks for the confirmation Bill
Grant Bunter wrote: ↑Fri Jul 02, 2021 5:27 pm
Moot in real life because:
Impedance changes with frequency.
Hence the reason we need to look at impedance charts to determine "will this amp do the job if I have X amount of cabs per side".
Possibly moot, possibly not. It leads into part 2 of the curiosity.
Instead of two frequencies, let's say we have three frequencies that make up a complex waveform. Just for visualization, let's say 60Hz, 600Hz, and 6000Hz.
This complex waveform goes through an amplifier and into a 3 way passive crossover and onto a woofer, midrange driver, and a tweeter... each 8Ω.
Playing 1, 2, or all 3 sinewaves at identical amplitude, would there be a change in resultant power (watts) in that configuration?