he in-room frequency response measured by for the Richter Wizard Series 6Plus was spectacularly flat and extended, as you can see for yourself in Graph 1. The response was measured using pink noise as a test signal and is the averaged response of nine measurements, taken in a grid fashion with the central part of the grid being on the tweeter axis. The black trace shows the response when the bass-reflex port at the rear is completely open; the blue trace shows the response when the port is completely blocked. You can see that the on-axis response is very comfortably positioned within a 5dB envelope from 45Hz all the way out to the graphing limit for this particular test of 20kHz. Normalised, this
