Hi guys just wanted to post the results of my REW project. Before I started to design the filters I spent several days adjusting the position of my speakers to try and get the best possible response. I ended up moving my speakers a bit closer together and further forward than where they were previously. The resulting sound was immediately better than what I had before, even before applying any filters. My speakers never disappeared more.
What this process really showed me was just how moving the speakers just a fraction of a inch could have a huge impact on the response. It definitely helped that I already had bass traps and absorption panels at the first reflection points on the side walls and ceiling. Overall, I am pleased that the overall shape of my baseline response resembles the recommended downward sloping curves. Initially I am going to go for a shelf between 20-100hz at 80db, then a gradual downward slope ending -10db at 20khz.
That being said, I still had 2 major valleys and 1 peak between 60-200hz. Here is my baseline response:
Here are the individual Left and Right speaker response before and after applying filters. I know the individual speaker graphs dont look all that amazing. I ended up creating filters for each speaker individually, though I used the combined stereo response as my guide. Because I was more focused on the combined stereo response, I was less concerned with what each speaker response graph looked like by itself. Hopefully this reasoning is sound.
Left speaker (green is after applying filters). I ended up using 4 filters between 50-200hz. I tried really hard to use as few filters as possible but it just wasnt possible given the closely bunched sawtooth response I had.
Right speaker (blue is after applying filters). I ended up using 5 filters.
Finally, is the final response graph compared to the original baseline (red is after applying filters). Overall I am very happy with how it turned out. For the most part, I am within 3db of the curve I wanted to achieve. I still have problem areas at 1200 and 1600 hz but I didnt want to apply filters at these higher frequencies. Any advice on how to improve things would be very much appreciated.
Here is my waterfall graph. It looks like I have some long decay times between 20-70hz. Not sure how to address this. More absorption panels?
What this process really showed me was just how moving the speakers just a fraction of a inch could have a huge impact on the response. It definitely helped that I already had bass traps and absorption panels at the first reflection points on the side walls and ceiling. Overall, I am pleased that the overall shape of my baseline response resembles the recommended downward sloping curves. Initially I am going to go for a shelf between 20-100hz at 80db, then a gradual downward slope ending -10db at 20khz.
That being said, I still had 2 major valleys and 1 peak between 60-200hz. Here is my baseline response:
Here are the individual Left and Right speaker response before and after applying filters. I know the individual speaker graphs dont look all that amazing. I ended up creating filters for each speaker individually, though I used the combined stereo response as my guide. Because I was more focused on the combined stereo response, I was less concerned with what each speaker response graph looked like by itself. Hopefully this reasoning is sound.
Left speaker (green is after applying filters). I ended up using 4 filters between 50-200hz. I tried really hard to use as few filters as possible but it just wasnt possible given the closely bunched sawtooth response I had.
Right speaker (blue is after applying filters). I ended up using 5 filters.
Finally, is the final response graph compared to the original baseline (red is after applying filters). Overall I am very happy with how it turned out. For the most part, I am within 3db of the curve I wanted to achieve. I still have problem areas at 1200 and 1600 hz but I didnt want to apply filters at these higher frequencies. Any advice on how to improve things would be very much appreciated.
Here is my waterfall graph. It looks like I have some long decay times between 20-70hz. Not sure how to address this. More absorption panels?