Just a quickie - what does the impedance response of a well-designed rear-loaded bass horn really look like? I've seen some theoretical response curves online that look like the classic multiple dip and peak response I expect, but then yesterday I measured the impedance response of one actually in use in a club here (one that the club's quite happy with, btw) and looks like what you'd expect from a classic simple vented alignment...
What did you see/measure?
Can you post a view of the measurement?
Unfortunately I didn't keep a copy of it (I can take another measurement in a day or two, if necessary), but it was the classic "double hump" impedance response you'd expect of a vented alignment, along with the rising impedance at higher frequencies caused by Le.
And why I call scoop bins BVRs [big vent reflexes].......... A proper BLH will have the three impedance peaks of a band-pass.
GM
Which leads to the question - if these things have the impedance response of a simple vented alignment, this suggest that their response is likely that of a simple vented alignment, so is there any reason to use them instead of a simple vented alignment?
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