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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. 5614 
A mono LF channel – I do not like it. 5610 
LF Results 5610 
The size maters 5609 
Response Curve 5609 
ULF placement and power 5609 
Wishful thinking and the Maelstrom-21 5609 
I will need a direct radiator under the bottom… 5609 
ULF experience: Drivers & power considerations cont'd 5608 
To experiment during the New England winter 5608 
Pitching pitch 5608 
There are many key points…. 5608 
A first true bass test 5592 
Actually…. 5592 
Best place lost? 5587 
Best location for bass, where art thou? 5587 
What to expect from ULF channel? 5571 
OK, it is something. 5570 
The new ULF scenario experiments. 5563 
Time coherence of ULF - my experience 5563 
Placement of ULF #2 5563 
Why I like the like the location #1 5563 
I need to find another ULF solution. 5555 
Ceiling subs 5554 
The infinite baffle shall be a very good solution. 5554 
This morning I woke up horny 5554 
Dsp 5554 
Parametric filters 5553 
SMS 1, Act II 5553 
I think I have found the problem with my ULF 5553 
SMS distortion issue? 5553 
At 30Hz of high order there are not truly tone” of “sound” 5553 
DCX output stage mods 5553 
Very small minority of the folks… 5553 
Exactly zero I suspect. . . 5553 
DSP vs. Music vs. HT 5553 
10" array; how low? & SMS-1 distortion 5553 
Interesting: 10” vs. 15” 5553 
Multiples of the Same Rising Response Curve? 5553 
The crisis of perception. 5552 
Dynamic range of ULF, tsunami and something else. 5551 
The Circle Unbroken 5551 
I wonder… is it PP2000? 5535 
The ULF and PurePower 2000 5526 
ULF Channel and LP playback. 5469 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5467 
I do not have an opinion yet. 5467 
Imponderabilis Neurosis 5467 
Bass non-pathologic hallucination… 5467 
A new paradigm for ULF? 5467 
…a number of logical flaws… 5467 
MAD HATTER 5466 
Thinking about my lower bass 5446 
Has Schrödinger's cat moved in unnoticed? 5446 
Wrong. 5446 
Groove Echo 5446 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5445 
Listening help with ULF stimulator 5445 
The ULF debate: time-alignment 5443 
Trying to address the dilemma with lowest bass. 5442 
Rotary woofer for ULF? 5442 
I do not need a Rotary woofer, I need to be less Moron. 5442 
*** 5442 
Congrats 5441 
Getting some maturity with ULF 5440 
About ULF attenuation. 5439 
How is it implemented? 5439 
My implementation of ULF channel. 5439 
Further thoughts about ULF channel. 5438 
ULF 5438 
I would agree but… 5438 
The problem that that I see with my ULF 5438 
Loudspeaker Proximity Coupling in Midbass & ULF 5438 
Great rotary idea! 5438 
Brilliant analyses! 5438 
Going down with bass 5436 
Under FS 5436 
Ideal ULF/Midbass integration 5436 
My super smart room! 5436 
Erratum ( or errata if you insist) 5436 
The issue is a complex one and should not be addressed generically ... 5436 
Cost benefit analysis of midbass horns v/s compromised ULF 5436 
There is no cost-benefit analysis for this thing. 5436 
I will experiment. 5436 
Sometimes experiment is not just experiment. 5436 
One Bass Horn or Two – for Oxric 5435 
My ways to mimic Reality. 5435 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5435 
"the purpose of playing, whose end both at the first and now..." 5435 
No manuals for those things…. 5435 
More about Rotary ULF idea. 5430 
Phoenix Gold Cyclone 5430 
Passing the waves…. as usual.... 5426 
Drive ULF Amp from Midbass Amp Output 5425 
There is “something”… 5425 
I do not know what I deal with. 5424 
I want my ULF amp back. 5413 
ULF emergency: Big & nasty solutions 5412 
No-amplification time 5412 
Listening audio without ULF. 5411 
Ok, I got the bass amp… 5411 
How much power do I need for my ULF. 5401 
A True ULF - what an amassing tool!!! 5399 
Put Marchand Crossover into the game. 5395 
I begin to like my active crossover. 5383 
Line-level passive vs. active ULF filter 5381 
Hm, there is no way to escape the 4th order. 5381 
Phase butterfly effect. 5380 
Back to DSP? 5380 
What I am trying to accomplish. 5380 
The art of ULF volume adjustment. 5379 
Sitting on a fence with ULF 5377 
The overly-swallowable bass. 5370 
To deLamminate my ULF channel. 5369 
What a beautiful result!!! 5368 
Pipe Organ with 128' register in Augsburg, Germany 5362 
An absolute must for ULF channel. 5345 
The compartmentalized bass 5222 
Paralleled SET bass 5218 
A new concept of ULF channel. 5210 
Infinite baffle 5210 
A 4th order bandpass vibrator? 5210 
ULF idea, possibly stupid. 5209 
IB vs Horn 5209 
A Distributed Infinite Baffle? 5208 
"Tuning" the "IB" 5208 
Flip 90 degrees 5208 
Little bump and the elephant solutions 5208 
How to do THAT? 5207 
ULF from coffee table 5207 
The through-hole tapped horn. 5207 
25 hz at 6db? 5207 
ULF from the SledgeHammer 5207 
Why not really use the basement 5207 
Never say never 5207 
How good ULF needs to be? 5196 
How good the user needs to be? 5196 
Maybe . . . 5196 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5196 
Narrow [Band] Tuning (DSP?) 5196 
ULF-only Sound 5156 
An easy ULF solution for someone. 5148 
Red Grills 5148 
It is exactly what I would like to avoid. 5147 
So I took your advice 5089 
Ok, let me know how it goes. 5089 
The ULF amp Itch. 5075 
Here is an update for the old thread.... 2696 
Good highs 2696 
Marchand 1753 
What truly are you tryin to accomplish? 1753 
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