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Author Topic: About the low-pass setting of the SW  (Read 347 times)

masakix

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About the low-pass setting of the SW
« on: May 09, 2024, 08:15:02 am »

I use this SW.
What value is the low pass setting of the SW? :)

https://jp.yamaha.com/products/audio_visual/speaker_systems/ns-sw700/index.html
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masakix

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kr4

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Re: About the low-pass setting of the SW
« Reply #2 on: May 09, 2024, 09:04:38 am »

The front speakers are these. :)
https://jp.yamaha.com/products/audio_visual/speaker_systems/ns-f700/index.html
The specs say "45Hz to 50kHz (-10dB)."  I'd start experimenting around 80-100Hz.
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Kal Rubinson
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masakix

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Re: About the low-pass setting of the SW
« Reply #3 on: May 10, 2024, 01:18:26 am »

Thank you so much for telling me. :)

I have no knowledge of low-pass filters at all.

If it is 45Hz to 50kHz (-10dB), I vaguely expected it to be around 50Hz, but am I completely wrong?
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Mr Swordfish

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Re: About the low-pass setting of the SW
« Reply #4 on: May 10, 2024, 08:12:32 am »

I can't read the specs for your front speakers, but from what you've written it appears that they are about ten db down at 45hz.  That usually means they start losing output at a higher frequency than that. 

If they were acoustic suspension (no port) the rolloff is usually fairly gradual so starting at 80 to 100 hz as suggested above is probably best. Since they are are bass refliex (ie a vented box with a port) the frequency curve is probably a slight bump in the low end followed by a fast rolloff below that frequency, so a lower frequency for the low pass might give better results - maybe 50 or 60. If you can find a frequency response curve for them you might be able to see what frequency they start losing output.

Of course, the bass response will depend  on your room and where you place the subwoofer. I'd say try setting it at 80hz and if there's an unnatural bump at that frequency adjust it down.  Note that many people like that unnatural bump.

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masakix

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Re: About the low-pass setting of the SW
« Reply #5 on: May 10, 2024, 09:25:48 am »

I would like to thank you both sincerely. ;)
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