tw99
Senior Member
The following measurements are from a 2.0 setup, although I do have a powered sub that could be added if it was going to make a big difference (currently it only gets turned on for films). I'm using a MiniDSP SHD, and I've got one preset set up using Dirac to correct the response up to around 200hz, which I've now got sounding OK, if not perfect.
I was interested to try another preset just with the MiniDSP filters, with Dirac disabled, using REW to measure and generate the filters. I'm finding it a bit difficult to optimise because I seem to have some particularly uneven response below 100hz. I've read that it's usually unhelpful to try to boost dips in the response, but I don't see how I can avoid some level of boost in this room, or there will be a pretty obvious dip remaining.
Graphs are all 1/6 smoothed. Speakers are ATC SCM40s, a 3-way with the crossovers at 380 and 3500hz.
This graph is an average of a few measurements at and around the normal listening position. There are some big resonances that need reducing, and the overall bass response is a bit lower than the mid and treble, but I'd like to maintain a Harman-like slope through the low frequencies.
Now with the measured response including the REW-generated filters in green.
This was the target response and predicted filter behaviour, which seems to match what was measured quite well. But to get this, there are filters boosting by 4, 5 and just over 6db in places. The small fall in treble was just done with a manual filter afterwards as I found that much more of a fall ended up sounding dull.
This is what the filters look like
Am I doing about as well as I can here ? Would be interested to hear any suggestions.
I was interested to try another preset just with the MiniDSP filters, with Dirac disabled, using REW to measure and generate the filters. I'm finding it a bit difficult to optimise because I seem to have some particularly uneven response below 100hz. I've read that it's usually unhelpful to try to boost dips in the response, but I don't see how I can avoid some level of boost in this room, or there will be a pretty obvious dip remaining.
Graphs are all 1/6 smoothed. Speakers are ATC SCM40s, a 3-way with the crossovers at 380 and 3500hz.
This graph is an average of a few measurements at and around the normal listening position. There are some big resonances that need reducing, and the overall bass response is a bit lower than the mid and treble, but I'd like to maintain a Harman-like slope through the low frequencies.
Now with the measured response including the REW-generated filters in green.
This was the target response and predicted filter behaviour, which seems to match what was measured quite well. But to get this, there are filters boosting by 4, 5 and just over 6db in places. The small fall in treble was just done with a manual filter afterwards as I found that much more of a fall ended up sounding dull.
This is what the filters look like
Am I doing about as well as I can here ? Would be interested to hear any suggestions.