What measurement result should you strive for?

[Vladimir_1953]

What should the impulse response graphics, step response and phase of a perfectly converged 3-way speaker system look like?
Component-wise, left / right and total.
What measurement result should you strive for?

 

[Vladimir_1953]

Is this chart perfect?

Or are there other options?

 

[jtalden]

The current relative delay is correct if the acoustic XO follows an idealized LR24 or LR48 shape for instance. Most acoustic XOs deviate from one of the idealized XO situations however so some minor delay adjustment may be needed to optimize the timing for a particular situation. The difference may be significant or it may not be.
Look at the SPL support that this delay setting provides through the XO frequency range by using an overlay of L MLCD, L MB and 'A + B' arithmetic summation of those 2 (or a measurement of both drivers operating together). The overlay of those 3 traces will show the SPL support. This is easiest to see with 1/3 or 1/6 smoothing applied. If there is good SPL support in the XO range then the delay setting is good. If not, then delay the L MB just enough more in order to get the best SPL in that XO range. You can then look at the R channel and do the same. The delay needed for the 2 channels should agree. If they differ significantly then the room effects are interfering too much.

I you want a specific opinion on the current setting, just post the mdat containing those 4 measurements.