Agreed, it's very easy to assign cause and effect incorrectly.
Question: my memory has the THD research being confined to CD/horns....so above let's say 1000Hz.
Is that memory correct? (I guess i should hunt for the paper
)Most of the literature i've read about harmonic distortion says it's audibility increases with decreasing frequency. And is greatest with subs.
This matches my experience.
I've found even excellent subs change their tune/tone as drive level increases, and a good FLH sub like Danley's Labhorn design sounds clean to the point like something is almost missing (due to a lack of harmonic distortion i guess).
So i'm led to believe, yes THD can be heard, at least at low frequencies with subs.
I haven't heard any THD comparisons at CD frequencies that seem audible.
just my 2c observations
The midTweeter can be used by itself FR. The only limit is volume levels due to playing really loud.
Adding the HP to the FR used quite improves their dynamics and fidelity.
One can speculate all they want about the A12pw, they do not have the come area of a 15”, but they have performed to a level that has impressed all of the many who have listened to them.
In the TL they reach into the mid-20s in room.
dave
Adding the HP to the FR used quite improves their dynamics and fidelity.
One can speculate all they want about the A12pw, they do not have the come area of a 15”, but they have performed to a level that has impressed all of the many who have listened to them.
In the TL they reach into the mid-20s in room.
dave
or can that be just how different a 15" driver sounds to a 6.5" driver? even at low levels, where distortion is low for both drivers i presume, they will always sound very different. same applies to tweeters i guess, take any tweeter with a flat front plate, compare it to the same tweeter now mounted to a horn, they will sound very different, and i guess they will sound different because of their difference in power responses and intensity. like your garden hose, with one nozzle you get a fine mist and then change pattern to pressure jet an the difference is total
Look at the context of my statement. I am talking to DIYers. This is not the place for pro audio designs, where nonlinearity can matter a lot if max SPL is desired, or for product designers who are trying to make the very smallest speaker that they can - obviously nonlinearity matters here as well. I am talking about high performance stereo and HT applications and in this context distortion can be easily designed to be insignificant.
I can always make a speaker where nonlinearity is a factor, but I choose to do them so that it is not.
Agreed, it's very easy to assign cause and effect incorrectly.
Question: my memory has the THD research being confined to CD/horns....so above let's say 1000Hz.
Is that memory correct? (I guess i should hunt for the paper
Most of the literature i've read about harmonic distortion says it's audibility increases with decreasing frequency. And is greatest with subs.
This matches my experience.
Our study of nonlinearity was broadband and not limited to high frequencies. Actually it is highly likely that as frequency falls our perception of nonlinearity will fall as well. (I know of no literature of validity that claims what you say.) We are most acute to sound around 3 kHz so just below that is where we are most likely to be sensitive to these effects.