@mijostyn wrote:
And just how are you correcting amplitude 1 Hz at a time? It is not down the road for me. You can do it in an automated fashion or manually including programing delays. I start with automated then fine tune manually. I find it best to program for flat then overlay my own preference target curves which were constructed by ear.
Depends on what's being addressed. Are we speaking notch placement or PEQ? Notches in the HF-region are located precisely with nearfield measurements, whereas PEQ's can be more of an assessment by ear from the listening position (in addition to measurements), starting out "overshooting" in larger Hz-steps (and gain ditto) to get an overall bearing, and then fine tuning in ever smaller increments and Q-width variations.
Efficiency is nice if you want to use small amplifiers. Personally, I do not care about it. I prefer to look at the type of loudspeaker.
It's a common misconception I find think to exclusively link up high efficiency with small amps as the preferable scenario. High eff. speakers + high power amps can be great solution as well - why limit yourself to one approach, and from what, experience? I too look a the type of speakers, which is really about what that dictates sonically rather than eff. per se.
You like horns, I prefer ESLs which admittedly are not efficient @ 86 dB. But, since I remove 100 Hz down from them they go louder than ---- , which is all I really care about, the ability of a system to reach realistic volume levels.
With horns and large displacement dynamic drivers it's about that as well, but then it's about how realistic volume levels are reproduced rather than merely attaining them.
At any rate with the amps we have today efficiency is not an issue.
If that was the case it's assuming the amp is the only determining factor in achieving realistic volume levels and overall effortless reproduction, which clearly it isn't. Low eff. speakers will eventually compress both as a dynamic phenomena (as in transiently fairly early on, dulling transient behavior) or more outwardly as a macro-thermally induced ditto heating up the voice coil to such a degree that SPL is reduced from an expected value.
It only determines volume per watt and not sound quality.
As an outset, yes, but practically it's not that simple. High vs. low efficiency isn't an all things being equal scenario as there are many differing factors at play comparing the two segments of speakers that will shape the outcome one or the other way. For one, with high eff. and maintaining extension into LF-region comes very large size, and controlling directivity into the lower mids will have the same consequence for the horn size here. The dispersive nature makes a big difference sonically, and high eff. + deep extension is a different meal/animal vs. low eff. and the same. A good quality, high eff. large format comp. driver + large horn combo simply steamrolls over a direct radiating low eff. dynamic driver combo in ways that has to be heard to be understood, whereas a large ESL speaker will have other qualities to bring to the table that in some ways exceed horns, while in others they fall short.