Subwoofer for music, how low?

I am looking for a pair of subs for music. I plan on having four if the two can blend with my speakers.

I have the Tekton Double Impact and tomorrow I will get a set of Buchardt S400Mk2.

I have been looking at the REL T/9x but the only go down to 27Hz at -3db. Should a sub not go down to 20Hz?

I live in Denmark so I have fewer options. I really like the swarm sub array but to costly to get it to Denmark.

I am looking for recommendations. It could be DIY or a specific sub.

I am open for suggestions

Merry Christmas

martin-andersen12-26-2021 1:35pm

terry9 Details Discussions Posts This discussion Message User 2,243 posts 12-31-2021 at 10:54pm Copy Comment URL Report Comment Edit Delete Denmark? Did you say Denmark? The country of ScanSpeak? Their 'Revelator' series is wonderful for DIY. Add Bryston for amplification and you have it all, except DSP, which can be obtained from an audio processor (digital doesn't matter for low frequencies). Bryston has a factory-refurbish program for older units, and they come with a 5 year guarantee. SST series is older but plenty good. Good luck!