![]() Rather than re-invent the wheel, I'll refer you to this rather good article on This relegates the SPL meter to doing spot checks, and to acting as a simple microphone for REW. Page for more information and download links. There is more that REW can do - see the Room Eq Wizard study The response is then displayed on a graph. The response via a microphone attached to the soundcard. REW (Room Equaliser Wizard) is free software that generates a sweep frequency for your sub, and simultaneously measures With the advent of REW, that has all changed. By increasing the frequency and repeating the measurement, a response could be built up. In the old days, measuring the frequency response of your subwoofer involved using a You may need to increase of decrease the volume of your sub to highlight the difference,īut it should be easy to see which is the correct setting. ![]() Then change the phase switch and check for a third time. An SPL meter will let you check that you have the phase switch at the best position.įind a passage that has some subwoofer action and check the level with the sub turned off.
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