Why is good, deep bass so difficult? - Myths and their Busters


This is a theme that goes round and round and round on Audiogon. While looking for good sources, I found a consultancy (Acoustic Frontiers) offering a book and links:

http://www.acousticfrontiers.com/guide-to-bass-optimization/?utm_source=CTA

Interestingly: AF is in Fairfax, CA, home to Fritz Speakers. I really have to go visit Fairfax!

And a link to two great articles over at sound and vision:

https://www.soundandvision.com/content/schroeder-frequency-show-and-tell-part-1
https://www.soundandvision.com/content/schroeder-frequency-show-and-tell-part-2

Every audiophile who is dissatisfied with the bass in their room should read these free resources.

Let me state unequivocally, deep bass is difficult for the average consumer. Most audiophiles are better off with bass limited speakers, or satellite/subwoofer systems. The former limits the danger you can get into. The latter has the most chance of success IF PROPERLY IMPLEMENTED.

The idea that large drivers/subs are slow is a complete and utter myth. Same for bass reflex. The issue is not the speed of the drivers. The issue is usually that the deeper a speaker goes the more it excites room modes, which the audiophile is then loathe to address.

Anyway, please read away. I look forward to reading comments.
erik_squires
Erik,

I suggest you call Bruce Thigpen @ Eminent Technology and tell him about the article you read or even Albert Porter who has heard the TRW-17. Be brave.

Dave
11 band analog EQ tunable for the listening sweet spot :-)
an additional subwoofer if needed for ego or rooms with small hands
push pull aluminum cone driver
decent plots over time
pistonic motion verified with a special laser system so that we know what the cone is really doing...knowing is the key to the scientific method
disc or download 11 band signals, SPL meter to set EQ
power factor corrected monoblock sub amp built into box
stealth enclosure with autoclave bonded low resonant cabinet
adjustable Q
owner answers the phone, calls me during fishing season to make sure I am still alive...

same basic technology available in the line for < $ 15 K

i am happy
oh and a high pass phase correct filter so you higher frequency amp dont have to work that hard....
oh and here is an almost free tip
download vandertones
get the analog Radio Shack SPL meter...put meter at listening height at listening position, record what your speakers and the room are doing

use the Vandersteen math based ( there is that damm science stuff again ) to consider placement changes...just download a Vandy manual for free and get out your tape measure...
I can be quite brave when I say I could not justify $12k on a subwoofer. :)

Your wallet may be less prone to pain and suffering than mine however, and I welcome you to spend as much as you'd like.

I will say that I have plenty of output and my HT has as much output at 16Hz as I want or need. My previous apartment was even better sounding than this one, but I'll survive.

Best,

E