subsonic filter support

[whisen]

I'm going to buy a passive subwoofer. I want to use this subwoofer with an inexpensive power amplifier.
So I need a subsonic filter. It's good to support a subsonic filter on the subwoofer channel.

Another way is to support independent PEQ on subwoofer channels.

 

[whisen]

I am happy to support Linkwitz Transform.

 

[harkpabst]

So, to make it perfectly clear, you want your WiiM Amp subwoofer output to support an additional low frequency high pass filter?

And how and where do you expect the Linkwitz transformation to happen? On the WiiM side? A real Linkwitz transformation works accurately for closed box speakers only and it must be tuned to the exact bass speaker in question. It also requires a lot of down low amplifier power and drives cone excursion to its limits quickly. It does not provide any high pass filtering in its own. I don't see it as a useful addition to WiiM Amplifiers, because so much can go so wrong.

If I didn't get your point, don't hesitate to reply.

 

[whisen]

So, to make it perfectly clear, you want your WiiM Amp subwoofer output to support an additional low frequency high pass filter?

And how and where do you expect the Linkwitz transformation to happen? On the WiiM side? A real Linkwitz transformation works accurately for closed box speakers only and it must be tuned to the exact bass speaker in question. It also requires a lot of down low amplifier power and drives cone excursion to its limits quickly. It does not provide any high pass filtering in its own. I don't see it as a useful addition to WiiM Amplifiers, because so much can go so wrong.

If I didn't get your point, don't hesitate to reply.

I can use L-T or multiple PEQs to raise the 20 Hz of the passive subwoofer, which requires a lot of amplifier power, so I need to adjust the power with the subsonic filter.

I only asked for L-T to reduce the number of PEQs used. L-T is good, but I can achieve my goal without L-T.
My main requirement is a subsonic filter.