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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. 5615 
A mono LF channel – I do not like it. 5611 
LF Results 5611 
The size maters 5610 
Response Curve 5610 
ULF placement and power 5610 
Wishful thinking and the Maelstrom-21 5610 
I will need a direct radiator under the bottom… 5610 
ULF experience: Drivers & power considerations cont'd 5609 
To experiment during the New England winter 5609 
Pitching pitch 5609 
There are many key points…. 5609 
A first true bass test 5593 
Actually…. 5593 
Best place lost? 5588 
Best location for bass, where art thou? 5588 
What to expect from ULF channel? 5572 
OK, it is something. 5571 
The new ULF scenario experiments. 5564 
Time coherence of ULF - my experience 5564 
Placement of ULF #2 5564 
Why I like the like the location #1 5564 
I need to find another ULF solution. 5556 
Ceiling subs 5555 
The infinite baffle shall be a very good solution. 5555 
This morning I woke up horny 5555 
Dsp 5555 
Parametric filters 5554 
SMS 1, Act II 5554 
I think I have found the problem with my ULF 5554 
SMS distortion issue? 5554 
At 30Hz of high order there are not truly tone” of “sound” 5554 
DCX output stage mods 5554 
Very small minority of the folks… 5554 
Exactly zero I suspect. . . 5554 
DSP vs. Music vs. HT 5554 
10" array; how low? & SMS-1 distortion 5554 
Interesting: 10” vs. 15” 5554 
Multiples of the Same Rising Response Curve? 5554 
The crisis of perception. 5553 
Dynamic range of ULF, tsunami and something else. 5552 
The Circle Unbroken 5552 
I wonder… is it PP2000? 5536 
The ULF and PurePower 2000 5527 
ULF Channel and LP playback. 5470 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5468 
I do not have an opinion yet. 5468 
Imponderabilis Neurosis 5468 
Bass non-pathologic hallucination… 5468 
A new paradigm for ULF? 5468 
…a number of logical flaws… 5468 
MAD HATTER 5467 
Thinking about my lower bass 5447 
Has Schrödinger's cat moved in unnoticed? 5447 
Wrong. 5447 
Groove Echo 5447 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5446 
Listening help with ULF stimulator 5446 
The ULF debate: time-alignment 5444 
Trying to address the dilemma with lowest bass. 5443 
Rotary woofer for ULF? 5443 
I do not need a Rotary woofer, I need to be less Moron. 5443 
*** 5443 
Congrats 5442 
Getting some maturity with ULF 5441 
About ULF attenuation. 5440 
How is it implemented? 5440 
My implementation of ULF channel. 5440 
Further thoughts about ULF channel. 5439 
ULF 5439 
I would agree but… 5439 
The problem that that I see with my ULF 5439 
Loudspeaker Proximity Coupling in Midbass & ULF 5439 
Great rotary idea! 5439 
Brilliant analyses! 5439 
Going down with bass 5437 
Under FS 5437 
Ideal ULF/Midbass integration 5437 
My super smart room! 5437 
Erratum ( or errata if you insist) 5437 
The issue is a complex one and should not be addressed generically ... 5437 
Cost benefit analysis of midbass horns v/s compromised ULF 5437 
There is no cost-benefit analysis for this thing. 5437 
I will experiment. 5437 
Sometimes experiment is not just experiment. 5437 
One Bass Horn or Two – for Oxric 5436 
My ways to mimic Reality. 5436 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5436 
"the purpose of playing, whose end both at the first and now..." 5436 
No manuals for those things…. 5436 
More about Rotary ULF idea. 5431 
Phoenix Gold Cyclone 5431 
Passing the waves…. as usual.... 5427 
Drive ULF Amp from Midbass Amp Output 5426 
There is “something”… 5426 
I do not know what I deal with. 5425 
I want my ULF amp back. 5414 
ULF emergency: Big & nasty solutions 5413 
No-amplification time 5413 
Listening audio without ULF. 5412 
Ok, I got the bass amp… 5412 
How much power do I need for my ULF. 5402 
A True ULF - what an amassing tool!!! 5400 
Put Marchand Crossover into the game. 5396 
I begin to like my active crossover. 5384 
Line-level passive vs. active ULF filter 5382 
Hm, there is no way to escape the 4th order. 5382 
Phase butterfly effect. 5381 
Back to DSP? 5381 
What I am trying to accomplish. 5381 
The art of ULF volume adjustment. 5380 
Sitting on a fence with ULF 5378 
The overly-swallowable bass. 5371 
To deLamminate my ULF channel. 5370 
What a beautiful result!!! 5369 
Pipe Organ with 128' register in Augsburg, Germany 5363 
An absolute must for ULF channel. 5346 
The compartmentalized bass 5223 
Paralleled SET bass 5219 
A new concept of ULF channel. 5211 
Infinite baffle 5211 
A 4th order bandpass vibrator? 5211 
ULF idea, possibly stupid. 5210 
IB vs Horn 5210 
A Distributed Infinite Baffle? 5209 
"Tuning" the "IB" 5209 
Flip 90 degrees 5209 
Little bump and the elephant solutions 5209 
How to do THAT? 5208 
ULF from coffee table 5208 
The through-hole tapped horn. 5208 
25 hz at 6db? 5208 
ULF from the SledgeHammer 5208 
Why not really use the basement 5208 
Never say never 5208 
How good ULF needs to be? 5197 
How good the user needs to be? 5197 
Maybe . . . 5197 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5197 
Narrow [Band] Tuning (DSP?) 5197 
ULF-only Sound 5157 
An easy ULF solution for someone. 5149 
Red Grills 5149 
It is exactly what I would like to avoid. 5148 
So I took your advice 5090 
Ok, let me know how it goes. 5090 
The ULF amp Itch. 5076 
Here is an update for the old thread.... 2697 
Good highs 2697 
Marchand 1754 
What truly are you tryin to accomplish? 1754 
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