M20 - Q. Does the subwoofer output have any form of filter applied to it?

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  Answer: The original production Q-M4 had a no Low Pass Filter (LPF) applied to the subwoofer output, later production after 2015 did have an LPF applied at 300Hz. If you would like to check whether or not your Q-M4 has the LPF applied, please email ...

• Q. I have a stereo integrated amplifier with no 'sub-out' , but it does have 'stereo out' or 'pre-out', can I connect a subwoofer?

  Answer: Some earlier and current stereo integrated amplifiers will not be equipped with a dedicated subwoofer output, but may have a 'stereo out' or 'pre-out' that can be utilised. The main difference between a 'sub out' or LFE and that of 'Pre' or ...

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• Q Active Hub - Q. Is the subwoofer pre-out full bandwidth mono or low pass?

  Answer: The 'Sub-Out' is an optional feed to connect a separate subwoofer to the system. This output uses a second order low pass-filter set to  -6dB @ 450Hz. A connected subwoofer may be used to extend the response of the system to include ...