Originally Posted by davece
did u look at that termlab stuff? im going to talk to my friend today but he should let me borrow it if it will work
Might work, might not. Seriously though, Termlab is way past overkill for measuring the performance of a typical sub.
No need to measure at war volume, 1 watt, 10 watts, and 100 watts is usually enough to get a picture of what is going on, and if the SPL is too high, you can always measure things with the microphone further back.
I use a Panasonic WM-61A capsule modded per Linkwitz's instructions, driven with a modified version of Linkwitz's circuit. Works fine from 60 dB up to about 130, when I start clipping the sound card.