I like to see quantification of cabinet diffraction. Take a simple 2-way bookshelf and simulate with rounded edges vs sharp. There is expense involved in the former so would be nice to see what the benefit is.
I like to see quantification of cabinet diffraction. Take a simple 2-way bookshelf and simulate with rounded edges vs sharp. There is expense involved in the former so would be nice to see what the benefit is.
Well, one is the consequence of the other, isn't it?Klippel and Dali speakers talk about hysteresis, Klippel and Knudsen talk about creep.
You know, AX does have a measurement guy who can help validate model predictions. Ahem. Cough, cough.Thanks, tuga. I am not that measurement oriented but it could be turned into a topic in some modelling sense.
This might be a bit too general of a question, but I am very curious as to how the breakup modes of a speaker diaphragm can be altered/managed by its physical profile (cross sectional and shape-wise)? There's got to be a better way to make a speaker driver behave at higher up in frequency aside from the cold-war-ish approach of just throwing more stiff, light, exotic material at the thing... right?
I am missing something here, perhaps you can shoot me a PMYou know, AX does have a measurement guy who can help validate model predictions. Ahem. Cough, cough.
You'd have a part mechanical, part electrical crossover then.I think he mentioned something like that in the interview Erin did with him. Not just the possibility of getting better control over the breakup modes, but also the idea of designing cones with optimized rolloffs, alowing the use of much simpler crossovers.
In my amp reviews, I often do multitone and distortion vs frequency runs with an actual loudspeaker load. Nothing pathological, but certainly typical. I just haven't seen any engineered amps do anything funny or unexpected that didn't show up in dummy load testing.I personally would love to see an article on stability and some real world testing on popular amplifiers and how it can correlate to sound quality.
I think this could account for some of the differences we hear in amplifiers although they may test the same on the bench. The reason for testing the same on the bench is because of the use of a non-reactive load for testing. People always ask the question "will two amplifiers that test the same sound the same?". In the real world our amplifiers are driving reactive loads and so a reactive load test in the specifications I think would be helpful.
This also may be a good test for Amir to add to his arsenal of tests when reviewing amplifiers. In addition to the standard tests add some reactance to the bench load and shoot some square waves through the device. I personally do this all the time with amplifiers because I feel it's an important quality of an amp but I rarely see it done in reviews or tests online.
This also could account for why people hear differences in speaker cables. Different LCR parameters of the cable may alter the phase margin and cause audible changes. That and speaker cable manufacturers are adding RC networks into their cables, this changes the loading the amplifier would normally see and also change the phase margin much more so compared to the intrinsic LC properties of just the cable conductors alone.
Thanks!
You'd have a part mechanical, part electrical crossover then.
In my amp reviews, I often do multitone and distortion vs frequency runs with an actual loudspeaker load. Nothing pathological, but certainly typical. I just haven't seen any engineered amps do anything funny or unexpected that didn't show up in dummy load testing.
Still waiting to find out specifics on two amps that "test the same on the bench" but have demonstrated audible "differences." I've been asking that same question for decades with no answer yet. Bayesians can draw the appropriate conclusions.
No need to invoke anything exotic for audible differences in speaker cables. That was covered completely 40 years ago by Fred Davis and Dick Greiner.
I did have crossover and enclosure.You'd have a part mechanical, part electrical crossover then.