Usable Frequency SPL in WinISD - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 4 Old 02-17-2017, 07:33 AM - Thread Starter
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Usable Frequency SPL in WinISD

Based on the graph posted below what would be considered "useable" SPL? I plan on running my AVR at -10dB. I'm attempting to play with tuning options and curious what my options are for HPF. I plan on having my build "convertible" between Sealed and Ported. My primary goal for some of these are mid-bass BUT I may want to experiment with having 1 at a lower frequency speaker on it's own amp OR channel at nearfield. EQ'ing gives me a few options.

So what is considered usable SPL?

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Thanks,
Joe

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post #2 of 4 Old 02-17-2017, 01:20 PM
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Quote:
Originally Posted by tjcinnamon View Post
Based on the graph posted below what would be considered "useable" SPL? I plan on running my AVR at -10dB. I'm attempting to play with tuning options and curious what my options are for HPF. I plan on having my build "convertible" between Sealed and Ported. My primary goal for some of these are mid-bass BUT I may want to experiment with having 1 at a lower frequency speaker on it's own amp OR channel at nearfield. EQ'ing gives me a few options.

So what is considered usable SPL?

Attachment 1975537

Thanks,
Joe
There's not enough information in those graphs. You would be better to look at the maximum SPL graph. The maximum graph considers both power handling and excursion. The plain SPL graph, which is what you have here, is dependent on what you've entered for signal power. Also the excursion could be well beyond the xmax. When looking at maximum SPL, you probably want to subtract 3-6dB to allow some cushion before destroying the drivers and to minimize distortion.
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post #3 of 4 Old 02-17-2017, 01:58 PM - Thread Starter
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Quote:
Originally Posted by gworrel View Post
There's not enough information in those graphs. You would be better to look at the maximum SPL graph. The maximum graph considers both power handling and excursion. The plain SPL graph, which is what you have here, is dependent on what you've entered for signal power. Also the excursion could be well beyond the xmax. When looking at maximum SPL, you probably want to subtract 3-6dB to allow some cushion before destroying the drivers and to minimize distortion.
I'll take a look at those. The graphs posted the excursion is within limits.

Marantz 7010 for 7.2.4
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8 x Paradigm CI Pro P65-R's
Sub 2 x Rythmik LVX12's
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post #4 of 4 Old 02-17-2017, 02:01 PM - Thread Starter
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here's max spl

Marantz 7010 for 7.2.4
2 x Paradigm Prestige 75F's
1 x Paradigm Prestige 55C
8 x Paradigm CI Pro P65-R's
Sub 2 x Rythmik LVX12's
TV: LG 65B6
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