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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. 5607 
A mono LF channel – I do not like it. 5603 
LF Results 5603 
The size maters 5602 
Response Curve 5602 
ULF placement and power 5602 
Wishful thinking and the Maelstrom-21 5602 
I will need a direct radiator under the bottom… 5602 
ULF experience: Drivers & power considerations cont'd 5601 
To experiment during the New England winter 5601 
Pitching pitch 5601 
There are many key points…. 5601 
A first true bass test 5585 
Actually…. 5585 
Best place lost? 5580 
Best location for bass, where art thou? 5580 
What to expect from ULF channel? 5564 
OK, it is something. 5563 
The new ULF scenario experiments. 5556 
Time coherence of ULF - my experience 5556 
Placement of ULF #2 5556 
Why I like the like the location #1 5556 
I need to find another ULF solution. 5548 
Ceiling subs 5547 
The infinite baffle shall be a very good solution. 5547 
This morning I woke up horny 5547 
Dsp 5547 
Parametric filters 5546 
SMS 1, Act II 5546 
I think I have found the problem with my ULF 5546 
SMS distortion issue? 5546 
At 30Hz of high order there are not truly tone” of “sound” 5546 
DCX output stage mods 5546 
Very small minority of the folks… 5546 
Exactly zero I suspect. . . 5546 
DSP vs. Music vs. HT 5546 
10" array; how low? & SMS-1 distortion 5546 
Interesting: 10” vs. 15” 5546 
Multiples of the Same Rising Response Curve? 5546 
The crisis of perception. 5545 
Dynamic range of ULF, tsunami and something else. 5544 
The Circle Unbroken 5544 
I wonder… is it PP2000? 5528 
The ULF and PurePower 2000 5519 
ULF Channel and LP playback. 5462 
Are original Aura Sound 1808 sound ULF solution for sealed enclosure? 5460 
I do not have an opinion yet. 5460 
Imponderabilis Neurosis 5460 
Bass non-pathologic hallucination… 5460 
A new paradigm for ULF? 5460 
…a number of logical flaws… 5460 
MAD HATTER 5459 
Thinking about my lower bass 5439 
Has Schrödinger's cat moved in unnoticed? 5439 
Wrong. 5439 
Groove Echo 5439 
Wrong? Actually, our actual positions differ very little, surprisingly enough. 5438 
Listening help with ULF stimulator 5438 
The ULF debate: time-alignment 5436 
Trying to address the dilemma with lowest bass. 5435 
Rotary woofer for ULF? 5435 
I do not need a Rotary woofer, I need to be less Moron. 5435 
*** 5435 
Congrats 5434 
Getting some maturity with ULF 5433 
About ULF attenuation. 5432 
How is it implemented? 5432 
My implementation of ULF channel. 5432 
Further thoughts about ULF channel. 5431 
ULF 5431 
I would agree but… 5431 
The problem that that I see with my ULF 5431 
Loudspeaker Proximity Coupling in Midbass & ULF 5431 
Great rotary idea! 5431 
Brilliant analyses! 5431 
Going down with bass 5429 
Under FS 5429 
Ideal ULF/Midbass integration 5429 
My super smart room! 5429 
Erratum ( or errata if you insist) 5429 
The issue is a complex one and should not be addressed generically ... 5429 
Cost benefit analysis of midbass horns v/s compromised ULF 5429 
There is no cost-benefit analysis for this thing. 5429 
I will experiment. 5429 
Sometimes experiment is not just experiment. 5429 
One Bass Horn or Two – for Oxric 5428 
My ways to mimic Reality. 5428 
Patent GB 394,325. "Transmitting, recording, and reproducing music..." 5428 
"the purpose of playing, whose end both at the first and now..." 5428 
No manuals for those things…. 5428 
More about Rotary ULF idea. 5423 
Phoenix Gold Cyclone 5423 
Passing the waves…. as usual.... 5419 
Drive ULF Amp from Midbass Amp Output 5418 
There is “something”… 5418 
I do not know what I deal with. 5417 
I want my ULF amp back. 5406 
ULF emergency: Big & nasty solutions 5405 
No-amplification time 5405 
Listening audio without ULF. 5404 
Ok, I got the bass amp… 5404 
How much power do I need for my ULF. 5394 
A True ULF - what an amassing tool!!! 5392 
Put Marchand Crossover into the game. 5388 
I begin to like my active crossover. 5376 
Line-level passive vs. active ULF filter 5374 
Hm, there is no way to escape the 4th order. 5374 
Phase butterfly effect. 5373 
Back to DSP? 5373 
What I am trying to accomplish. 5373 
The art of ULF volume adjustment. 5372 
Sitting on a fence with ULF 5370 
The overly-swallowable bass. 5363 
To deLamminate my ULF channel. 5362 
What a beautiful result!!! 5361 
Pipe Organ with 128' register in Augsburg, Germany 5355 
An absolute must for ULF channel. 5338 
The compartmentalized bass 5215 
Paralleled SET bass 5211 
A new concept of ULF channel. 5203 
Infinite baffle 5203 
A 4th order bandpass vibrator? 5203 
ULF idea, possibly stupid. 5202 
IB vs Horn 5202 
A Distributed Infinite Baffle? 5201 
"Tuning" the "IB" 5201 
Flip 90 degrees 5201 
Little bump and the elephant solutions 5201 
How to do THAT? 5200 
ULF from coffee table 5200 
The through-hole tapped horn. 5200 
25 hz at 6db? 5200 
ULF from the SledgeHammer 5200 
Why not really use the basement 5200 
Never say never 5200 
How good ULF needs to be? 5189 
How good the user needs to be? 5189 
Maybe . . . 5189 
I think there is little evidence of marketing bias in the papers. Call me naive if you wish. 5189 
Narrow [Band] Tuning (DSP?) 5189 
ULF-only Sound 5149 
An easy ULF solution for someone. 5141 
Red Grills 5141 
It is exactly what I would like to avoid. 5140 
So I took your advice 5082 
Ok, let me know how it goes. 5082 
The ULF amp Itch. 5068 
Here is an update for the old thread.... 2689 
Good highs 2689 
Marchand 1746 
What truly are you tryin to accomplish? 1746 
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