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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. 5608 
A mono LF channel – I do not like it. 5604 
LF Results 5604 
The size maters 5603 
Response Curve 5603 
ULF placement and power 5603 
Wishful thinking and the Maelstrom-21 5603 
I will need a direct radiator under the bottom… 5603 
ULF experience: Drivers & power considerations cont'd 5602 
To experiment during the New England winter 5602 
Pitching pitch 5602 
There are many key points…. 5602 
A first true bass test 5586 
Actually…. 5586 
Best place lost? 5581 
Best location for bass, where art thou? 5581 
What to expect from ULF channel? 5565 
OK, it is something. 5564 
The new ULF scenario experiments. 5557 
Time coherence of ULF - my experience 5557 
Placement of ULF #2 5557 
Why I like the like the location #1 5557 
I need to find another ULF solution. 5549 
Ceiling subs 5548 
The infinite baffle shall be a very good solution. 5548 
This morning I woke up horny 5548 
Dsp 5548 
Parametric filters 5547 
SMS 1, Act II 5547 
I think I have found the problem with my ULF 5547 
SMS distortion issue? 5547 
At 30Hz of high order there are not truly tone” of “sound” 5547 
DCX output stage mods 5547 
Very small minority of the folks… 5547 
Exactly zero I suspect. . . 5547 
DSP vs. Music vs. HT 5547 
10" array; how low? & SMS-1 distortion 5547 
Interesting: 10” vs. 15” 5547 
Multiples of the Same Rising Response Curve? 5547 
The crisis of perception. 5546 
Dynamic range of ULF, tsunami and something else. 5545 
The Circle Unbroken 5545 
I wonder… is it PP2000? 5529 
The ULF and PurePower 2000 5520 
ULF Channel and LP playback. 5463 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5461 
I do not have an opinion yet. 5461 
Imponderabilis Neurosis 5461 
Bass non-pathologic hallucination… 5461 
A new paradigm for ULF? 5461 
…a number of logical flaws… 5461 
MAD HATTER 5460 
Thinking about my lower bass 5440 
Has Schrödinger's cat moved in unnoticed? 5440 
Wrong. 5440 
Groove Echo 5440 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5439 
Listening help with ULF stimulator 5439 
The ULF debate: time-alignment 5437 
Trying to address the dilemma with lowest bass. 5436 
Rotary woofer for ULF? 5436 
I do not need a Rotary woofer, I need to be less Moron. 5436 
*** 5436 
Congrats 5435 
Getting some maturity with ULF 5434 
About ULF attenuation. 5433 
How is it implemented? 5433 
My implementation of ULF channel. 5433 
Further thoughts about ULF channel. 5432 
ULF 5432 
I would agree but… 5432 
The problem that that I see with my ULF 5432 
Loudspeaker Proximity Coupling in Midbass & ULF 5432 
Great rotary idea! 5432 
Brilliant analyses! 5432 
Going down with bass 5430 
Under FS 5430 
Ideal ULF/Midbass integration 5430 
My super smart room! 5430 
Erratum ( or errata if you insist) 5430 
The issue is a complex one and should not be addressed generically ... 5430 
Cost benefit analysis of midbass horns v/s compromised ULF 5430 
There is no cost-benefit analysis for this thing. 5430 
I will experiment. 5430 
Sometimes experiment is not just experiment. 5430 
One Bass Horn or Two – for Oxric 5429 
My ways to mimic Reality. 5429 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5429 
"the purpose of playing, whose end both at the first and now..." 5429 
No manuals for those things…. 5429 
More about Rotary ULF idea. 5424 
Phoenix Gold Cyclone 5424 
Passing the waves…. as usual.... 5420 
Drive ULF Amp from Midbass Amp Output 5419 
There is “something”… 5419 
I do not know what I deal with. 5418 
I want my ULF amp back. 5407 
ULF emergency: Big & nasty solutions 5406 
No-amplification time 5406 
Listening audio without ULF. 5405 
Ok, I got the bass amp… 5405 
How much power do I need for my ULF. 5395 
A True ULF - what an amassing tool!!! 5393 
Put Marchand Crossover into the game. 5389 
I begin to like my active crossover. 5377 
Line-level passive vs. active ULF filter 5375 
Hm, there is no way to escape the 4th order. 5375 
Phase butterfly effect. 5374 
Back to DSP? 5374 
What I am trying to accomplish. 5374 
The art of ULF volume adjustment. 5373 
Sitting on a fence with ULF 5371 
The overly-swallowable bass. 5364 
To deLamminate my ULF channel. 5363 
What a beautiful result!!! 5362 
Pipe Organ with 128' register in Augsburg, Germany 5356 
An absolute must for ULF channel. 5339 
The compartmentalized bass 5216 
Paralleled SET bass 5212 
A new concept of ULF channel. 5204 
Infinite baffle 5204 
A 4th order bandpass vibrator? 5204 
ULF idea, possibly stupid. 5203 
IB vs Horn 5203 
A Distributed Infinite Baffle? 5202 
"Tuning" the "IB" 5202 
Flip 90 degrees 5202 
Little bump and the elephant solutions 5202 
How to do THAT? 5201 
ULF from coffee table 5201 
The through-hole tapped horn. 5201 
25 hz at 6db? 5201 
ULF from the SledgeHammer 5201 
Why not really use the basement 5201 
Never say never 5201 
How good ULF needs to be? 5190 
How good the user needs to be? 5190 
Maybe . . . 5190 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5190 
Narrow [Band] Tuning (DSP?) 5190 
ULF-only Sound 5150 
An easy ULF solution for someone. 5142 
Red Grills 5142 
It is exactly what I would like to avoid. 5141 
So I took your advice 5083 
Ok, let me know how it goes. 5083 
The ULF amp Itch. 5069 
Here is an update for the old thread.... 2690 
Good highs 2690 
Marchand 1747 
What truly are you tryin to accomplish? 1747 
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