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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. 5612 
A mono LF channel – I do not like it. 5608 
LF Results 5608 
The size maters 5607 
Response Curve 5607 
ULF placement and power 5607 
Wishful thinking and the Maelstrom-21 5607 
I will need a direct radiator under the bottom… 5607 
ULF experience: Drivers & power considerations cont'd 5606 
To experiment during the New England winter 5606 
Pitching pitch 5606 
There are many key points…. 5606 
A first true bass test 5590 
Actually…. 5590 
Best place lost? 5585 
Best location for bass, where art thou? 5585 
What to expect from ULF channel? 5569 
OK, it is something. 5568 
The new ULF scenario experiments. 5561 
Time coherence of ULF - my experience 5561 
Placement of ULF #2 5561 
Why I like the like the location #1 5561 
I need to find another ULF solution. 5553 
Ceiling subs 5552 
The infinite baffle shall be a very good solution. 5552 
This morning I woke up horny 5552 
Dsp 5552 
Parametric filters 5551 
SMS 1, Act II 5551 
I think I have found the problem with my ULF 5551 
SMS distortion issue? 5551 
At 30Hz of high order there are not truly tone” of “sound” 5551 
DCX output stage mods 5551 
Very small minority of the folks… 5551 
Exactly zero I suspect. . . 5551 
DSP vs. Music vs. HT 5551 
10" array; how low? & SMS-1 distortion 5551 
Interesting: 10” vs. 15” 5551 
Multiples of the Same Rising Response Curve? 5551 
The crisis of perception. 5550 
Dynamic range of ULF, tsunami and something else. 5549 
The Circle Unbroken 5549 
I wonder… is it PP2000? 5533 
The ULF and PurePower 2000 5524 
ULF Channel and LP playback. 5467 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5465 
I do not have an opinion yet. 5465 
Imponderabilis Neurosis 5465 
Bass non-pathologic hallucination… 5465 
A new paradigm for ULF? 5465 
…a number of logical flaws… 5465 
MAD HATTER 5464 
Thinking about my lower bass 5444 
Has Schrödinger's cat moved in unnoticed? 5444 
Wrong. 5444 
Groove Echo 5444 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5443 
Listening help with ULF stimulator 5443 
The ULF debate: time-alignment 5441 
Trying to address the dilemma with lowest bass. 5440 
Rotary woofer for ULF? 5440 
I do not need a Rotary woofer, I need to be less Moron. 5440 
*** 5440 
Congrats 5439 
Getting some maturity with ULF 5438 
About ULF attenuation. 5437 
How is it implemented? 5437 
My implementation of ULF channel. 5437 
Further thoughts about ULF channel. 5436 
ULF 5436 
I would agree but… 5436 
The problem that that I see with my ULF 5436 
Loudspeaker Proximity Coupling in Midbass & ULF 5436 
Great rotary idea! 5436 
Brilliant analyses! 5436 
Going down with bass 5434 
Under FS 5434 
Ideal ULF/Midbass integration 5434 
My super smart room! 5434 
Erratum ( or errata if you insist) 5434 
The issue is a complex one and should not be addressed generically ... 5434 
Cost benefit analysis of midbass horns v/s compromised ULF 5434 
There is no cost-benefit analysis for this thing. 5434 
I will experiment. 5434 
Sometimes experiment is not just experiment. 5434 
One Bass Horn or Two – for Oxric 5433 
My ways to mimic Reality. 5433 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5433 
"the purpose of playing, whose end both at the first and now..." 5433 
No manuals for those things…. 5433 
More about Rotary ULF idea. 5428 
Phoenix Gold Cyclone 5428 
Passing the waves…. as usual.... 5424 
Drive ULF Amp from Midbass Amp Output 5423 
There is “something”… 5423 
I do not know what I deal with. 5422 
I want my ULF amp back. 5411 
ULF emergency: Big & nasty solutions 5410 
No-amplification time 5410 
Listening audio without ULF. 5409 
Ok, I got the bass amp… 5409 
How much power do I need for my ULF. 5399 
A True ULF - what an amassing tool!!! 5397 
Put Marchand Crossover into the game. 5393 
I begin to like my active crossover. 5381 
Line-level passive vs. active ULF filter 5379 
Hm, there is no way to escape the 4th order. 5379 
Phase butterfly effect. 5378 
Back to DSP? 5378 
What I am trying to accomplish. 5378 
The art of ULF volume adjustment. 5377 
Sitting on a fence with ULF 5375 
The overly-swallowable bass. 5368 
To deLamminate my ULF channel. 5367 
What a beautiful result!!! 5366 
Pipe Organ with 128' register in Augsburg, Germany 5360 
An absolute must for ULF channel. 5343 
The compartmentalized bass 5220 
Paralleled SET bass 5216 
A new concept of ULF channel. 5208 
Infinite baffle 5208 
A 4th order bandpass vibrator? 5208 
ULF idea, possibly stupid. 5207 
IB vs Horn 5207 
A Distributed Infinite Baffle? 5206 
"Tuning" the "IB" 5206 
Flip 90 degrees 5206 
Little bump and the elephant solutions 5206 
How to do THAT? 5205 
ULF from coffee table 5205 
The through-hole tapped horn. 5205 
25 hz at 6db? 5205 
ULF from the SledgeHammer 5205 
Why not really use the basement 5205 
Never say never 5205 
How good ULF needs to be? 5194 
How good the user needs to be? 5194 
Maybe . . . 5194 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5194 
Narrow [Band] Tuning (DSP?) 5194 
ULF-only Sound 5154 
An easy ULF solution for someone. 5146 
Red Grills 5146 
It is exactly what I would like to avoid. 5145 
So I took your advice 5087 
Ok, let me know how it goes. 5087 
The ULF amp Itch. 5073 
Here is an update for the old thread.... 2694 
Good highs 2694 
Marchand 1751 
What truly are you tryin to accomplish? 1751 
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