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In Reply to: RE: Finally tried using two subwoofer today posted by airtime on December 08, 2016 at 17:44:53
Your squarish room will necessarily have prominent room modes and having two subs should help to minimize them. Ideally, you would experiment widely with placement and measure the results.
If you have a smartphone, there are free SPL meter apps and test tones are available as well.
Follow Ups:
...Ralph, what's the cheapest way to get a frequency response readout at the listening position?
I have a Radio Shack SPL meter, but I use the Studio Six app for my iPhone/iPad. Click here for info.
While I use a series of bass test tones from the Stereophile Test CD Vol 1, you can download bass tones from a link provided courtesy of Tom Manley found here .
It is a native OGG file for computer playback, but can be transcoded to WAV if you wanted to burn a CD. If you'd like the spreadsheet I use for graphing the results, download it here . Note that it contains known corrections for the RS meter. You can edit or zero them out.
Happy measuring! Neutral bass just sounds better to me.
I used the exact same Stereophole test CD. I also used this setup to test my hearing 17 years ago, and I was pretty shocked. I heard nothing after the 10,000 Hz signal then, and I know it has worsened since.
I was shocked that I heard nothing over 10k as well. A friend of mine who is both an audiophile and a ENT doctor told me almost every one starts loosing that range in there 40's. I had no idea it was that early.
And he said that crap about "energy" above those frequencies is bull. You would need so much energy at 20k to make a sensory difference that it would be enough to start loosening your teeth fillings.
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