Hello. This is to document (and seek help) setting up and optimising my music and movie system.
I’m at full volume on the laptop ( source), 3/4th on the fosi stereo amp and 1/4th gain on the xtz with port closed with the supplied foam bung and the eq set at reference. The volume at minidsp is -12.
The procedure I found I the Internet is this:
1. Get the sub to output 75db while muting other speakers and find the response and eq it to as per the target curve (Harman).
2. Then right front.
3. Try sub+right overlayed and find an optimum crossover frequency. Then find the response of sub+right and do 3 measurements to the either side - imagine it’s 80hz. Then 60, 70,75, 80, 85, 90, 100 hz and select the most optimum frequency.
4. Do the above with left speaker.
5. Set the output L+R and sub with the optimum crossover and check the response. Fine tune the eq as needed.
6. That’s it?
I’m failing at the first step. When I apply the biquad filters to the sub in minidsp, the response does not match the predicted response in REW. It does not make any sense. I need your guidance to troubleshoot. At the moment I put a temporary crossover (-3db per channel on the input to the sub and -24db slope on the speakers and sub) in order to listen to the music but I feel there is too much sub-bass.
I’m at full volume on the laptop ( source), 3/4th on the fosi stereo amp and 1/4th gain on the xtz with port closed with the supplied foam bung and the eq set at reference. The volume at minidsp is -12.
The procedure I found I the Internet is this:
1. Get the sub to output 75db while muting other speakers and find the response and eq it to as per the target curve (Harman).
2. Then right front.
3. Try sub+right overlayed and find an optimum crossover frequency. Then find the response of sub+right and do 3 measurements to the either side - imagine it’s 80hz. Then 60, 70,75, 80, 85, 90, 100 hz and select the most optimum frequency.
4. Do the above with left speaker.
5. Set the output L+R and sub with the optimum crossover and check the response. Fine tune the eq as needed.
6. That’s it?
I’m failing at the first step. When I apply the biquad filters to the sub in minidsp, the response does not match the predicted response in REW. It does not make any sense. I need your guidance to troubleshoot. At the moment I put a temporary crossover (-3db per channel on the input to the sub and -24db slope on the speakers and sub) in order to listen to the music but I feel there is too much sub-bass.