In my experience a well tuned DSP crossover is transparent at whatever frequency you place it (I am aiming for linear phase, with time alignment).What are the crossover frequencies on the JBL 708P and the Lyd 48? I tend to believe that crossovers should either be as low as possible (at or below 1 khz) or as high as possible (above 5-6 khz), in order to avoid bad things happening in the range where are ears are most sensitive. Crossovers pose problems even for active speakers with fine-tuned digital crossovers. Earl Geddes never makes speakers with crossovers higher than 1 khz for example.
In my experience a well tuned DSP crossover is transparent at whatever frequency you place it (I am aiming for linear phase, with time alignment).
One of the tricks I can demonstrate with some of my speakers is instantly switching between setups with widely-differing crossovers (frequencies and slopes) while playing music, and you simply cannot hear when the switch is made (standard sighted test caveat). In theory, it affects the dispersion and breakup of drivers etc. but in a three way these are not going to be as pronounced as a two way, and the result is a very large envelope of settings where no change is heard.
I shall have to try it in different places in the room. Certainly at the sweet spot (quite a long way from the speakers) I can go from crossovers at 200 & 2kHz 3rd order, say, to 500 & 3.5kHz 8th order and any combinations in between, and you can't tell. In my setup, the crossovers are a generic 'smooth' filter profile with any frequency and slope you like, and these are calculated when you switch between profiles (with a mouse click). Driver correction based on measurements is overlaid on top of the basic crossovers, and there is a separate fixed delay for each driver. In theory, all settings are 'valid', but you'd probably want to avoid ultra-sharp or ultra-shallow slopes or crossover frequencies that are 'silly'. I would expect a two way to be less tolerant of settings (unless it's done with horns and waveguides perhaps?).Interesting. Is this the case only in the sweetspot, or over a wide listening area? My own speakers are supposed to be phase coherent in the crossover region (with a traditional analog active crossover though), so I perceive them as very coherent from a close distance and in the sweetspot. But they dont sound that coherent from farther away. I have assumed that this is because the woofer and the tweeter have different dispersion characteristics, so they behave different around the crossover region once you move out of the immediate nearfield. Maybe this is not as big a problem with a three-way though.
What are the crossover frequencies on the JBL 708P and the Lyd 48? I tend to believe that crossovers should either be as low as possible (at or below 1 khz) or as high as possible (above 5-6 khz), in order to avoid bad things happening in the range where our ears are most sensitive. Crossovers pose problems even for active speakers with fine-tuned digital crossovers. Earl Geddes never makes speakers with crossovers higher than 1 khz for example.
The KEF LS-50 wireless is about $ 2200 / pair I think. Different set of bells and whistles.
What are the crossover frequencies on the JBL 708P and the Lyd 48? I tend to believe that crossovers should either be as low as possible (at or below 1 khz) or as high as possible (above 5-6 khz), in order to avoid bad things happening in the range where our ears are most sensitive. Crossovers pose problems even for active speakers with fine-tuned digital crossovers. Earl Geddes never makes speakers with crossovers higher than 1 khz for example.
LYD 48 crossover is 490Hz/ 5600Hz