Report Othorn - HT capable? in Bass Gear Posted April 20, 2018 6 hours ago, m_ms said: I'm convinced that sheer headroom is one of the core parameters where "sound quality" from a sub (and main speakers) goes, and that having loads of this is determining in supplying the ease and relaxed presentation that I've grown so fond of. headroom is always good of course but, as far as I can see, you are not talking about challenging listening levels ("occasional bursts to 110dB"). This may be worth bearing in mind as you decide on what to build. re the HPF, I assume you're talking about a passive high pass filter. Of course such filters are expensive and/or impractical so the question is why use a passive filter?