A bass "trap" can be constructed out of a driver and tuned with an LCR network, so it would be interesting to try something similar with a PR
Oh, I thought he may have been alluding to more than just peaks and nulls. However, can it be done to a greater extent in terms of eq? This is the whole purpose of my initial query.
PRs are largely redundant these days due to high excursion drivers and cheap amplification. Easier and usually better to EQ.
PRs are needed more than ever with the abundance of high-excursion drivers and cheap power.
It's difficult to build a sensible ported box for those drivers, so PRs are often the way to do it.
Chris
Room problems are rarely only at one frequency, they usually produce a series of peaks and troughs, and so broad band equalisation which is not selective, will not really help much.
A series or parallel LC cct will only address a chosen particular frequency, because it addresses only that peak or trough, the others remaining.
IMO the ear is extremely good at compensating for room modes.
I agree with the point that ABRs are now increasingly relevant with long throw woofers, because they imply a higher air velocity in ports which of course will increase the potential for turbulence chuffing.
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