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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. 5603 
A mono LF channel – I do not like it. 5599 
LF Results 5599 
The size maters 5598 
Response Curve 5598 
ULF placement and power 5598 
Wishful thinking and the Maelstrom-21 5598 
I will need a direct radiator under the bottom… 5598 
ULF experience: Drivers & power considerations cont'd 5597 
To experiment during the New England winter 5597 
Pitching pitch 5597 
There are many key points…. 5597 
A first true bass test 5581 
Actually…. 5581 
Best place lost? 5576 
Best location for bass, where art thou? 5576 
What to expect from ULF channel? 5560 
OK, it is something. 5559 
The new ULF scenario experiments. 5552 
Time coherence of ULF - my experience 5552 
Placement of ULF #2 5552 
Why I like the like the location #1 5552 
I need to find another ULF solution. 5544 
Ceiling subs 5543 
The infinite baffle shall be a very good solution. 5543 
This morning I woke up horny 5543 
Dsp 5543 
Parametric filters 5542 
SMS 1, Act II 5542 
I think I have found the problem with my ULF 5542 
SMS distortion issue? 5542 
At 30Hz of high order there are not truly tone” of “sound” 5542 
DCX output stage mods 5542 
Very small minority of the folks… 5542 
Exactly zero I suspect. . . 5542 
DSP vs. Music vs. HT 5542 
10" array; how low? & SMS-1 distortion 5542 
Interesting: 10” vs. 15” 5542 
Multiples of the Same Rising Response Curve? 5542 
The crisis of perception. 5541 
Dynamic range of ULF, tsunami and something else. 5540 
The Circle Unbroken 5540 
I wonder… is it PP2000? 5524 
The ULF and PurePower 2000 5515 
ULF Channel and LP playback. 5458 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5456 
I do not have an opinion yet. 5456 
Imponderabilis Neurosis 5456 
Bass non-pathologic hallucination… 5456 
A new paradigm for ULF? 5456 
…a number of logical flaws… 5456 
MAD HATTER 5455 
Thinking about my lower bass 5435 
Has Schrödinger's cat moved in unnoticed? 5435 
Wrong. 5435 
Groove Echo 5435 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5434 
Listening help with ULF stimulator 5434 
The ULF debate: time-alignment 5432 
Trying to address the dilemma with lowest bass. 5431 
Rotary woofer for ULF? 5431 
I do not need a Rotary woofer, I need to be less Moron. 5431 
*** 5431 
Congrats 5430 
Getting some maturity with ULF 5429 
About ULF attenuation. 5428 
How is it implemented? 5428 
My implementation of ULF channel. 5428 
Further thoughts about ULF channel. 5427 
ULF 5427 
I would agree but… 5427 
The problem that that I see with my ULF 5427 
Loudspeaker Proximity Coupling in Midbass & ULF 5427 
Great rotary idea! 5427 
Brilliant analyses! 5427 
Going down with bass 5425 
Under FS 5425 
Ideal ULF/Midbass integration 5425 
My super smart room! 5425 
Erratum ( or errata if you insist) 5425 
The issue is a complex one and should not be addressed generically ... 5425 
Cost benefit analysis of midbass horns v/s compromised ULF 5425 
There is no cost-benefit analysis for this thing. 5425 
I will experiment. 5425 
Sometimes experiment is not just experiment. 5425 
One Bass Horn or Two – for Oxric 5424 
My ways to mimic Reality. 5424 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5424 
"the purpose of playing, whose end both at the first and now..." 5424 
No manuals for those things…. 5424 
More about Rotary ULF idea. 5419 
Phoenix Gold Cyclone 5419 
Passing the waves…. as usual.... 5415 
Drive ULF Amp from Midbass Amp Output 5414 
There is “something”… 5414 
I do not know what I deal with. 5413 
I want my ULF amp back. 5402 
ULF emergency: Big & nasty solutions 5401 
No-amplification time 5401 
Listening audio without ULF. 5400 
Ok, I got the bass amp… 5400 
How much power do I need for my ULF. 5390 
A True ULF - what an amassing tool!!! 5388 
Put Marchand Crossover into the game. 5384 
I begin to like my active crossover. 5372 
Line-level passive vs. active ULF filter 5370 
Hm, there is no way to escape the 4th order. 5370 
Phase butterfly effect. 5369 
Back to DSP? 5369 
What I am trying to accomplish. 5369 
The art of ULF volume adjustment. 5368 
Sitting on a fence with ULF 5366 
The overly-swallowable bass. 5359 
To deLamminate my ULF channel. 5358 
What a beautiful result!!! 5357 
Pipe Organ with 128' register in Augsburg, Germany 5351 
An absolute must for ULF channel. 5334 
The compartmentalized bass 5211 
Paralleled SET bass 5207 
A new concept of ULF channel. 5199 
Infinite baffle 5199 
A 4th order bandpass vibrator? 5199 
ULF idea, possibly stupid. 5198 
IB vs Horn 5198 
A Distributed Infinite Baffle? 5197 
"Tuning" the "IB" 5197 
Flip 90 degrees 5197 
Little bump and the elephant solutions 5197 
How to do THAT? 5196 
ULF from coffee table 5196 
The through-hole tapped horn. 5196 
25 hz at 6db? 5196 
ULF from the SledgeHammer 5196 
Why not really use the basement 5196 
Never say never 5196 
How good ULF needs to be? 5185 
How good the user needs to be? 5185 
Maybe . . . 5185 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5185 
Narrow [Band] Tuning (DSP?) 5185 
ULF-only Sound 5145 
An easy ULF solution for someone. 5137 
Red Grills 5137 
It is exactly what I would like to avoid. 5136 
So I took your advice 5078 
Ok, let me know how it goes. 5078 
The ULF amp Itch. 5064 
Here is an update for the old thread.... 2685 
Good highs 2685 
Marchand 1742 
What truly are you tryin to accomplish? 1742 
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