The argument came from this thread:
http://forums.audioholics.com/forums/showthread.php?t=57469
I don't want to keep going there so I am starting a new one. If moderators would be so kind as to move the last bunch of “back and forth” from there to here.
The argument is as follows.
Can resistors be used to adjust for a sensitivity and SPL matching of a different loudspeakers.
Basically, can a reviewer use a simple switch box with variable L-pads or a bunch of resistors between the amplifier and a loudspeaker?
I say that the differences in frequency response of a loudspeaker are so minuscule that it is quite possible and very cheap indeed.
Measurements were taken with calibrated Behringer ECM800 microphone, using Behringer Mic preamp, Behringer 500 amp and Briston preamplifier.