audiodelic
Well-Known Member
You need a signal generator. Software is freely available.
You will need an Excel sheet. In successive rows, write down the frequencies from 30 to 80Hz, spaced 5Hz apart - 30,35,40--
You will have two columns. One will be titled 'subwoofer', the other will be titled 'mains'.
Play some music at your preferred listening level. Watch that you do not set it too low, as this will result in you adding more bass, which will muddy the sound when you turn up the volume. It should be moderately loud to loud level, but not uncomfortable for you. Throughout the rest of this period, do *not* touch the level controls.
Now, disconnect the mains. Keep the SPL meter at your listening position.
Use the signal generator to generate fixed tones from 30 to 80 Hz corresponding to the Excel sheet, and note down the results in the sheet.
Next, disconnect the subwoofer and connect the mains, repeat the above test.
The crossover point should integrate to the -6dB point of the mains, or one octave under, depending on the crossover slope of your subwoofer. Once you finish the inital setting, run the test again but this time with both subwoofer and mains connected. You should get essentially flat response from 35 to 65 Hz, then you will know mission is achieved.
You will need an Excel sheet. In successive rows, write down the frequencies from 30 to 80Hz, spaced 5Hz apart - 30,35,40--
You will have two columns. One will be titled 'subwoofer', the other will be titled 'mains'.
Play some music at your preferred listening level. Watch that you do not set it too low, as this will result in you adding more bass, which will muddy the sound when you turn up the volume. It should be moderately loud to loud level, but not uncomfortable for you. Throughout the rest of this period, do *not* touch the level controls.
Now, disconnect the mains. Keep the SPL meter at your listening position.
Use the signal generator to generate fixed tones from 30 to 80 Hz corresponding to the Excel sheet, and note down the results in the sheet.
Next, disconnect the subwoofer and connect the mains, repeat the above test.
The crossover point should integrate to the -6dB point of the mains, or one octave under, depending on the crossover slope of your subwoofer. Once you finish the inital setting, run the test again but this time with both subwoofer and mains connected. You should get essentially flat response from 35 to 65 Hz, then you will know mission is achieved.
