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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: RE: Non Vented Sub For Music System posted by AudioSoul on September 3, 2016 at 08:36:01:
The crossover of 60-Hz is the upper frequency of your subwoofer's frequency response. In other words, you've set the subwoofer to respond to frequencies below 60-Hz and it will respond to very low frequencies even below 20-Hz since it is a ported subwoofer. The only way you will know if you need a rumble filter is to observe the diaphragm to see if it is pumping when you play a record. If your phono stage reproduces ultra low frequencies as mine does, you will observe subwoofer pumping, which in turn produces intermodulation distortion. You are correct that a rumble filter introduces phase shift, but subwoofer pumping along with its associated intermodulation distortion is less desirable than phase shift caused by a rumble filter.
Best regards,
John Elison
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Follow Ups
- RE: Non Vented Sub For Music System - John Elison 09:10:41 09/03/16 (1)
- RE: Non Vented Sub For Music System - AudioSoul 09:17:41 09/03/16 (0)
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