My subwoofer plate amp passing high freq - diyAudio
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Old 11th February 2005, 12:24 AM   #1
muhy3 is offline muhy3  Australia
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Default My subwoofer plate amp passing high freq

I just set up my laptop downstairs, with some software to have a frequency sweep and microphone to test output. I went over the crossover point with the frequency, and up to over 1kHz and my subwoofer was still outputting an audible tone.

I run a plate amplifier, what should I do?
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Old 11th February 2005, 12:44 AM   #2
Join Date: May 2004
Location: New Hampshire
Insufficient LP slope can lead to this, but if the source is a 5.1/7.1 receiver that also has a crossover on the sub output the two are additive and you're likely OK.
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Old 11th February 2005, 12:45 AM   #3
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Since you had a microphone into the laptop, can you post a graph of sound level vs frequency for us?
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Old 11th February 2005, 12:52 AM   #4
simon5 is offline simon5  Canada
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If your subwoofer is near maximum output, with test tones you will be able to hear a bit of high frequency sounds, it's normal.
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