Amp&filter for NHT Evolution W2 sub-woofer, please?

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There is a NHT Evolution W2, passive sub-woofer out there waiting for me. I tried to find an amp and this one on the bay interesting, but the frequency response would be enough low? is it suitable for the purpose?

but a filter, xover needed as well? yes 😕 ant suggestion?

there are complete amp&filters on eBay from UK or US but expensive $200 up, too bad! thanx for any help.

NHT Evolution W2:
System Type: Acoustic suspension subwoofer
Drivers: 12" aluminum cone, high excursion.
System Power: N/A – Externt slutsteg
Peak Acoustic Output @1M: 112dB SPL
Frequency Response: 26Hz-140Hz. +/- 3dB
Dimensions: 350x350x350mm
 
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