Dale Murray
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Thread Starter
- Joined
- Aug 21, 2018
- Messages
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More
- Main Amp
- Harman Kardon HK3500
- Other Amp
- Behringer Nu1000dsp
- Universal / Blu-ray / CD Player
- Pioneer Elite PD-65
- Front Speakers
- GodenEar Triton Five
- Subwoofers
- DIY Dayton Audio Titanic 10"
I have a rudimentary understanding of REW; Impulse, Filtered IR, GD, RT60 Clarity, Decay, Waterfall, Spectrogram, and Captured baffle me.
For the record, I use Dirac on my indoor stereo.
My pandemic project was building a 7.1 patio theater - my wife loves movies. This was all very budget conscious but I tried my best to make good decisions and exploit inverse square law and boundary gain when it came to the subwoofer.
When I first set it up I used Audyssey - included with Denon AVR-X1600H receiver - to set levels and phase, though it was not something I'd want to do again since Audyssey was not meant to be used outdoor. I imagine the neighbors were not happy with all the noise and volume levels required. I have never bothered to measure the system after it was done, until today.
I took a few measurements with the only change being the crossover frequency, 40, 60, 80, 90, 100hz. The only real evidence of crossover frequency change is in the THD measurement.
- I do have a proper calibrated microphone.
- There is not much difference in the graphs, overall.
- THD is not great but my patio is not a listening room.
- There is some funk between 500-2000hz. I did close mic measurements on my L&R speakers - they are not the cause. (Those measurements are not included in data). I imagine ifs reflections off the house and retaining wall.
I'd love it if somebody where to download my measurements and offer some feedback. I cannot change much and certainly not going to acoustically treat the outdoors.
The file can be found here: dale-murray. com / REW / <-- just remove the spaces.
For the record, I use Dirac on my indoor stereo.
My pandemic project was building a 7.1 patio theater - my wife loves movies. This was all very budget conscious but I tried my best to make good decisions and exploit inverse square law and boundary gain when it came to the subwoofer.
When I first set it up I used Audyssey - included with Denon AVR-X1600H receiver - to set levels and phase, though it was not something I'd want to do again since Audyssey was not meant to be used outdoor. I imagine the neighbors were not happy with all the noise and volume levels required. I have never bothered to measure the system after it was done, until today.
I took a few measurements with the only change being the crossover frequency, 40, 60, 80, 90, 100hz. The only real evidence of crossover frequency change is in the THD measurement.
- I do have a proper calibrated microphone.
- There is not much difference in the graphs, overall.
- THD is not great but my patio is not a listening room.
- There is some funk between 500-2000hz. I did close mic measurements on my L&R speakers - they are not the cause. (Those measurements are not included in data). I imagine ifs reflections off the house and retaining wall.
I'd love it if somebody where to download my measurements and offer some feedback. I cannot change much and certainly not going to acoustically treat the outdoors.
The file can be found here: dale-murray. com / REW / <-- just remove the spaces.
