I have a dedicated room, 7.1 x 4.3 x 2.4 meter, with some treatments, speakers, listening
seat etc all perfectly symmetrical.
Right after the happiness of finally moving into it I got dismayed upon hearing it. That was with ESL-63 and
traditional amplification.
Ultimately I fled to the TDAI-2170. Doing setup as per instructions (one measurement in the listening
position, numerous measurements randomly distributed over the space), it balanced the image,
but a lack in mid bass and an excess around 2kHz persisted. None of the voicings (fixed eq curves)
in the TDAI-2170 helped.
I changed over to ProAc D40 speakers. Same story.
Then I cheated and ran setup with all measurements closely around the listening position. That was much better.
RoomPerfect can work, but it might take some effort. Even then the TDAI-2170 lacks something indispensable:
user control by means of additional tone controls or, much better still, a parametric equaliser.
The forthcoming TDAI-3400 has this. I would buy one immediately if it were not so ugly. It really looks like
a defaced 2170.
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I also have a MiniDSP/REW rig. I am using this for developing a DIY active speaker. This speaker uses a BMR midrange and
crosses over at 300Hz. With the diffraction of this wide-dispersion driver against the cabinet and that low a crossover
I can tell you that trying to measure and compensate this in-room is a totally maddening experience. Moving to
the garden or garage improves things, but still not very useful.
I gave up and started repairing antique cassette decks to regain my sanity.
For the speaker development the next stage is that I will rent an anechoic room for a day...
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You must also keep in mind that no DSP system can cure a totally bare, reflective room. DSP is for speaker/room/listener
matching in the bass, and for speaker correction in midrange and treble. DSP is not for midrange and higher room correction.
The term 'room correction' is a misnomer.