I just got new speakers and decided to try REW for the first time in my life AND to make my first post here ever.. ;-)
I made few measurements, which can be seen below:
1. Main speakers only, no crossover:
2. Main speakers only, crossover @ 60Hz
3. Subwoofer only, crossover @ 60Hz (sub levels not properly configured yet)
4. Mains+sub, crossover @ 60Hz, phase 0
5. Mains+sub, crossover @ 60Hz, phase 180
Few questions and observations...
The huge drops @ 59Hz (@52Hz with sub) and @ 135Hz with main speakers and peaks at 40 and 80Hz with sub are probably caused by the room? I don't remember moving the speakers closer to the front wall make any big difference. Also the overall level is about 5dB lower below 140Hz with main speakers (when I run the Audyssey setup from my AV, it sets the crossover @120Hz maybe because of this and this is way too high for my taste).
I have played with crossover of 60Hz, but as you can see my subwoofer still gots quite a lot to play between 65Hz and 120Hz. Should I use the low pass filter from the SMS-1 in addition to the one from AV-receiver?
Am I making correct assumption if i say the 180 degree phase is the correct one?
What are your overall recommendations?