Simplified REW Setup and Use (USB Mic & HDMI Connection) Including Measurement Techniques and How To Interpret Graphs - Page 517 - AVS Forum | Home Theater Discussions And Reviews
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post #15481 of 15486 Old Yesterday, 08:25 AM
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I've bought a few refurb AVRs, not a single issue.
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post #15482 of 15486 Old Yesterday, 05:05 PM
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Okay, with minimum attempting, I was able to do this with my subwoofer (blue = old, purple = new).

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post #15483 of 15486 Old Yesterday, 05:20 PM
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Originally Posted by muffinmcfluffin View Post
Okay, with minimum attempting, I was able to do this with my subwoofer (blue = old, purple = new).

Regarding your measurement, you should cut off the lower end at 15Hz, and the upper end should extend to 300Hz, and the measurement should not be smoothed. Can you repost taking these recommendations into consideration?
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post #15484 of 15486 Old Yesterday, 11:15 PM
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Regarding your measurement, you should cut off the lower end at 15Hz, and the upper end should extend to 300Hz, and the measurement should not be smoothed. Can you repost taking these recommendations into consideration?
If I have time tomorrow, I will.

Smoothing is off.

Why up to 300, though? My crossover frequency is at 60Hz. The PC13-Ultra can only do two P-EQ bands. If you want me to mix it with my FL and FR channels, I'll have to do more with it.
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post #15485 of 15486 Old Today, 12:41 AM
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I think it's for proper scaling of the graph?
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post #15486 of 15486 Old Today, 05:16 AM
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Quote:
Originally Posted by muffinmcfluffin View Post
If I have time tomorrow, I will.

Smoothing is off.

Why up to 300, though? My crossover frequency is at 60Hz. The PC13-Ultra can only do two P-EQ bands. If you want me to mix it with my FL and FR channels, I'll have to do more with it.
You should be concerned by the overall bass frequency response of your system. The main speakers begin contributing to bass response at the crossover (actually their bass contribution extends below the crossover, albeit at a rolled-off level). To assess bass performance, you need to measure not only the sub, but the smoothness of the transition between the sub and the mains. In audio terms, the bass (or modal) region extends to at least 300Hz, and in this range room modes affect bass performance, ringing, etc. That is why measuring the entire modal region is important.
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