Specifications

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fine with 1/3 octave resolution, but when taking speaker measurements I prefer to use 1/6 or 1/12.
Noticeably absent is the ability to change the dB scale of the window, which is locked in at 50-100dB. Frequency is
also locked in at 16-315Hz. A nice touch is a little display at the bottom of the screen that shows the exact
frequency and magnitude (dB) of the wherever your mouse curser is located.
The only device I own that allows for manual PEQ adjustment is the Emotiva X-Ref 10 subwoofer, so I used it to
judge the accuracy of XTZ Sound’s calculated and suggested filters. I ran the room analyzer, applied the suggested
filters to the subwoofer, and took another measurement to compare the results. Time and again the XTZ Sound
Room Analyzer II Pro measurement system proved to properly find room modes, suggest filters, and calculate a
results curve that very closely followed what I actually measured after applying the filters. In the end, that means
that the Room Analyzer achieved its main goal of helping me EQ my system. From this perspective, the previously
mentioned limitations (overlay, dB scale, etc.) don’t seem to be all that important because the system still excelled
at its core mission.
Real Time Analyzer (RTA)
An RTA allows you to see how loud particular frequency bands are in real time. It has limited usefulness when
calibrating a home theater system, but still serves a few purposes. XTZ Sound recommends using it to adjust the
phase/polarity of your subwoofer. This is done by monitoring the SPL shown on the RTA at the crossover frequency
between your speakers and subwoofer and then adjusting the phase dial to achieve the highest SPL possible at that
frequency. Each time you adjust the phase control, you can save an overlay of the measurement (just for this
session, not permanently save). The RTA is locked in at 1/3 octave resolution, which is a little low, but good enough
for the needs of most users.
RTA Screen Dum p directly from Room Analyzer II
Unlike the Room Analyzer, the scale of the RTA window can be adjusted. It’s not continuously variable, but offers a
range adjustment of 50 or 100dB, and top limit of 120, 100, or 80dB. The bottom limit is always set to 20dB. The
nifty chart under the RTA window gives you better look at the exact frequency of each band.