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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. 5609 
A mono LF channel – I do not like it. 5605 
LF Results 5605 
The size maters 5604 
Response Curve 5604 
ULF placement and power 5604 
Wishful thinking and the Maelstrom-21 5604 
I will need a direct radiator under the bottom… 5604 
ULF experience: Drivers & power considerations cont'd 5603 
To experiment during the New England winter 5603 
Pitching pitch 5603 
There are many key points…. 5603 
A first true bass test 5587 
Actually…. 5587 
Best place lost? 5582 
Best location for bass, where art thou? 5582 
What to expect from ULF channel? 5566 
OK, it is something. 5565 
The new ULF scenario experiments. 5558 
Time coherence of ULF - my experience 5558 
Placement of ULF #2 5558 
Why I like the like the location #1 5558 
I need to find another ULF solution. 5550 
Ceiling subs 5549 
The infinite baffle shall be a very good solution. 5549 
This morning I woke up horny 5549 
Dsp 5549 
Parametric filters 5548 
SMS 1, Act II 5548 
I think I have found the problem with my ULF 5548 
SMS distortion issue? 5548 
At 30Hz of high order there are not truly tone” of “sound” 5548 
DCX output stage mods 5548 
Very small minority of the folks… 5548 
Exactly zero I suspect. . . 5548 
DSP vs. Music vs. HT 5548 
10" array; how low? & SMS-1 distortion 5548 
Interesting: 10” vs. 15” 5548 
Multiples of the Same Rising Response Curve? 5548 
The crisis of perception. 5547 
Dynamic range of ULF, tsunami and something else. 5546 
The Circle Unbroken 5546 
I wonder… is it PP2000? 5530 
The ULF and PurePower 2000 5521 
ULF Channel and LP playback. 5464 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5462 
I do not have an opinion yet. 5462 
Imponderabilis Neurosis 5462 
Bass non-pathologic hallucination… 5462 
A new paradigm for ULF? 5462 
…a number of logical flaws… 5462 
MAD HATTER 5461 
Thinking about my lower bass 5441 
Has Schrödinger's cat moved in unnoticed? 5441 
Wrong. 5441 
Groove Echo 5441 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5440 
Listening help with ULF stimulator 5440 
The ULF debate: time-alignment 5438 
Trying to address the dilemma with lowest bass. 5437 
Rotary woofer for ULF? 5437 
I do not need a Rotary woofer, I need to be less Moron. 5437 
*** 5437 
Congrats 5436 
Getting some maturity with ULF 5435 
About ULF attenuation. 5434 
How is it implemented? 5434 
My implementation of ULF channel. 5434 
Further thoughts about ULF channel. 5433 
ULF 5433 
I would agree but… 5433 
The problem that that I see with my ULF 5433 
Loudspeaker Proximity Coupling in Midbass & ULF 5433 
Great rotary idea! 5433 
Brilliant analyses! 5433 
Going down with bass 5431 
Under FS 5431 
Ideal ULF/Midbass integration 5431 
My super smart room! 5431 
Erratum ( or errata if you insist) 5431 
The issue is a complex one and should not be addressed generically ... 5431 
Cost benefit analysis of midbass horns v/s compromised ULF 5431 
There is no cost-benefit analysis for this thing. 5431 
I will experiment. 5431 
Sometimes experiment is not just experiment. 5431 
One Bass Horn or Two – for Oxric 5430 
My ways to mimic Reality. 5430 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5430 
"the purpose of playing, whose end both at the first and now..." 5430 
No manuals for those things…. 5430 
More about Rotary ULF idea. 5425 
Phoenix Gold Cyclone 5425 
Passing the waves…. as usual.... 5421 
Drive ULF Amp from Midbass Amp Output 5420 
There is “something”… 5420 
I do not know what I deal with. 5419 
I want my ULF amp back. 5408 
ULF emergency: Big & nasty solutions 5407 
No-amplification time 5407 
Listening audio without ULF. 5406 
Ok, I got the bass amp… 5406 
How much power do I need for my ULF. 5396 
A True ULF - what an amassing tool!!! 5394 
Put Marchand Crossover into the game. 5390 
I begin to like my active crossover. 5378 
Line-level passive vs. active ULF filter 5376 
Hm, there is no way to escape the 4th order. 5376 
Phase butterfly effect. 5375 
Back to DSP? 5375 
What I am trying to accomplish. 5375 
The art of ULF volume adjustment. 5374 
Sitting on a fence with ULF 5372 
The overly-swallowable bass. 5365 
To deLamminate my ULF channel. 5364 
What a beautiful result!!! 5363 
Pipe Organ with 128' register in Augsburg, Germany 5357 
An absolute must for ULF channel. 5340 
The compartmentalized bass 5217 
Paralleled SET bass 5213 
A new concept of ULF channel. 5205 
Infinite baffle 5205 
A 4th order bandpass vibrator? 5205 
ULF idea, possibly stupid. 5204 
IB vs Horn 5204 
A Distributed Infinite Baffle? 5203 
"Tuning" the "IB" 5203 
Flip 90 degrees 5203 
Little bump and the elephant solutions 5203 
How to do THAT? 5202 
ULF from coffee table 5202 
The through-hole tapped horn. 5202 
25 hz at 6db? 5202 
ULF from the SledgeHammer 5202 
Why not really use the basement 5202 
Never say never 5202 
How good ULF needs to be? 5191 
How good the user needs to be? 5191 
Maybe . . . 5191 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5191 
Narrow [Band] Tuning (DSP?) 5191 
ULF-only Sound 5151 
An easy ULF solution for someone. 5143 
Red Grills 5143 
It is exactly what I would like to avoid. 5142 
So I took your advice 5084 
Ok, let me know how it goes. 5084 
The ULF amp Itch. 5070 
Here is an update for the old thread.... 2691 
Good highs 2691 
Marchand 1748 
What truly are you tryin to accomplish? 1748 
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