Happy Holidays and Your Favorite Tips?

Most subs have an 18db/octave low pass filter.

That’s news to me, I thought the THX standard was 24?

But generally, yes. Regardless of Q, having a main speaker that has a hump, and then having the sub take over below that hump can be challenging. It can also just be challenging for the room. So, this is, broadly speaking, a tone control.

However, I do think that many speakers, sealed or ported, have a bass hump. The ability to raise or lower the Q isn’t limited to ported speakers.

Raising the cut-off frequency AND sealing the box greatly reduces woofer distortion by controlling excursion, another benefit.  Of course, at the end of the day what matters is whether the listener likes it or not.

@ncbassplayer

Re: preference for short posts. Small ideas will fit in them. Nuance, detail, complexity—not so much.

Re: to plug or not to plug (one's ports). Room acoustics are largely mysterious; even experts often get this very wrong. I've posted about that before (long posts...). So try it both ways, and let your ears be the judge.

Re: Sir Richard Burton. Also a fan. One of my treasures is a copy of his translation of the "Thousand Nights and a Night" in seventeen hardcover volumes issued in just 1,000 numbered sets to subscribers of the Burton Club in the 1880s (mine is set #239). An amazing character: adventurer, scholar, linguist, prolific writer. His mastery of languages (not quite 50, more like 27, but who's counting?) enabled a "translation" so full of multi-lingual neologisms that it is virtually in its own new language. 

@linnvolk 

Thank you!

Learn how to turn off your "critical ear" and just enjoy the music.

In whatever you do learn to do it properly before you attempt shortcuts and bastardization. 

Merry Christmas,

barts