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Site News: 16 Jan 2026
That old bug returned. Sometimes creation of new threat not going to work.  The replies still work. 
I will fix it soon.
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Thread WITH the new posts.

Legends: "Week" - last week posts, "Bold" - entered last 48 hours.
Macondo’s lowest channel. 5611 
A mono LF channel – I do not like it. 5607 
LF Results 5607 
The size maters 5606 
Response Curve 5606 
ULF placement and power 5606 
Wishful thinking and the Maelstrom-21 5606 
I will need a direct radiator under the bottom… 5606 
ULF experience: Drivers & power considerations cont'd 5605 
To experiment during the New England winter 5605 
Pitching pitch 5605 
There are many key points…. 5605 
A first true bass test 5589 
Actually…. 5589 
Best place lost? 5584 
Best location for bass, where art thou? 5584 
What to expect from ULF channel? 5568 
OK, it is something. 5567 
The new ULF scenario experiments. 5560 
Time coherence of ULF - my experience 5560 
Placement of ULF #2 5560 
Why I like the like the location #1 5560 
I need to find another ULF solution. 5552 
Ceiling subs 5551 
The infinite baffle shall be a very good solution. 5551 
This morning I woke up horny 5551 
Dsp 5551 
Parametric filters 5550 
SMS 1, Act II 5550 
I think I have found the problem with my ULF 5550 
SMS distortion issue? 5550 
At 30Hz of high order there are not truly tone” of “sound” 5550 
DCX output stage mods 5550 
Very small minority of the folks… 5550 
Exactly zero I suspect. . . 5550 
DSP vs. Music vs. HT 5550 
10" array; how low? & SMS-1 distortion 5550 
Interesting: 10” vs. 15” 5550 
Multiples of the Same Rising Response Curve? 5550 
The crisis of perception. 5549 
Dynamic range of ULF, tsunami and something else. 5548 
The Circle Unbroken 5548 
I wonder… is it PP2000? 5532 
The ULF and PurePower 2000 5523 
ULF Channel and LP playback. 5466 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5464 
I do not have an opinion yet. 5464 
Imponderabilis Neurosis 5464 
Bass non-pathologic hallucination… 5464 
A new paradigm for ULF? 5464 
…a number of logical flaws… 5464 
MAD HATTER 5463 
Thinking about my lower bass 5443 
Has Schrödinger's cat moved in unnoticed? 5443 
Wrong. 5443 
Groove Echo 5443 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5442 
Listening help with ULF stimulator 5442 
The ULF debate: time-alignment 5440 
Trying to address the dilemma with lowest bass. 5439 
Rotary woofer for ULF? 5439 
I do not need a Rotary woofer, I need to be less Moron. 5439 
*** 5439 
Congrats 5438 
Getting some maturity with ULF 5437 
About ULF attenuation. 5436 
How is it implemented? 5436 
My implementation of ULF channel. 5436 
Further thoughts about ULF channel. 5435 
ULF 5435 
I would agree but… 5435 
The problem that that I see with my ULF 5435 
Loudspeaker Proximity Coupling in Midbass & ULF 5435 
Great rotary idea! 5435 
Brilliant analyses! 5435 
Going down with bass 5433 
Under FS 5433 
Ideal ULF/Midbass integration 5433 
My super smart room! 5433 
Erratum ( or errata if you insist) 5433 
The issue is a complex one and should not be addressed generically ... 5433 
Cost benefit analysis of midbass horns v/s compromised ULF 5433 
There is no cost-benefit analysis for this thing. 5433 
I will experiment. 5433 
Sometimes experiment is not just experiment. 5433 
One Bass Horn or Two – for Oxric 5432 
My ways to mimic Reality. 5432 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5432 
"the purpose of playing, whose end both at the first and now..." 5432 
No manuals for those things…. 5432 
More about Rotary ULF idea. 5427 
Phoenix Gold Cyclone 5427 
Passing the waves…. as usual.... 5423 
Drive ULF Amp from Midbass Amp Output 5422 
There is “something”… 5422 
I do not know what I deal with. 5421 
I want my ULF amp back. 5410 
ULF emergency: Big & nasty solutions 5409 
No-amplification time 5409 
Listening audio without ULF. 5408 
Ok, I got the bass amp… 5408 
How much power do I need for my ULF. 5398 
A True ULF - what an amassing tool!!! 5396 
Put Marchand Crossover into the game. 5392 
I begin to like my active crossover. 5380 
Line-level passive vs. active ULF filter 5378 
Hm, there is no way to escape the 4th order. 5378 
Phase butterfly effect. 5377 
Back to DSP? 5377 
What I am trying to accomplish. 5377 
The art of ULF volume adjustment. 5376 
Sitting on a fence with ULF 5374 
The overly-swallowable bass. 5367 
To deLamminate my ULF channel. 5366 
What a beautiful result!!! 5365 
Pipe Organ with 128' register in Augsburg, Germany 5359 
An absolute must for ULF channel. 5342 
The compartmentalized bass 5219 
Paralleled SET bass 5215 
A new concept of ULF channel. 5207 
Infinite baffle 5207 
A 4th order bandpass vibrator? 5207 
ULF idea, possibly stupid. 5206 
IB vs Horn 5206 
A Distributed Infinite Baffle? 5205 
"Tuning" the "IB" 5205 
Flip 90 degrees 5205 
Little bump and the elephant solutions 5205 
How to do THAT? 5204 
ULF from coffee table 5204 
The through-hole tapped horn. 5204 
25 hz at 6db? 5204 
ULF from the SledgeHammer 5204 
Why not really use the basement 5204 
Never say never 5204 
How good ULF needs to be? 5193 
How good the user needs to be? 5193 
Maybe . . . 5193 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5193 
Narrow [Band] Tuning (DSP?) 5193 
ULF-only Sound 5153 
An easy ULF solution for someone. 5145 
Red Grills 5145 
It is exactly what I would like to avoid. 5144 
So I took your advice 5086 
Ok, let me know how it goes. 5086 
The ULF amp Itch. 5072 
Here is an update for the old thread.... 2693 
Good highs 2693 
Marchand 1750 
What truly are you tryin to accomplish? 1750 
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