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You know, it surprises me how much less fan to listen my playback without ULF.  Nope, the playback does not sound bad from audio perspective without ULF but it for sure a bit different experience. From a certain perspective to be in a room with ULF on is a different experience as ULF charnel adds some extra softness to the room. The Midbass in fact adds softness to the room but ULF adds to this softness some very fine touch “softness elegance”. The note’s decay dies more gracefully and more acoustically soft of speaking…

I do think that ULF channels has to be a part of any more or less serious playback and I think that  any more or less serious playback shall explode what is going on udder 20Hz. As I said my own ULF is in a bit compromise as it goes too high – up to 27 Hz. What I fix or buy a new power amp for ULF I will try to slide my ULF lower, let say down to 15Hz and add gain, effectively sliding the ULF down in the transition slope. I do not know where would be right balance between my sub 20Hz ULF mishigas and proper balanced auditable sound but I am sure that what I get there then I will be able to recognize it. I do not mind to experiment with ULF equalization as I think it might also bring some interesting benefits.

The whole point is that ULF has become an organic part of my listening environment and now with no ULF power amp even the playback sounds fine but the environment feels underdeveloped. I think more people have to hear the contribution of any more or less properly implemented ULF to understand what I am taking about.

Interesting that industry do produce ULF-targeted devises but they looks like do not meet a wide popularity. Wilson Audio for instance did XS subwoofers. They were unfortunately ported with two Aura 1808 drivers

http://www.soundstage.com/revequip/wilson_xs_sub.htm

…and meant to be use under the Wilson Grand Slamms. You can say anything you want about the Grand Slamm bass, I am not a huge fun of it either but Wilson for sure had a point advocating to use ULF channels to supplement the Grand Slamms bass. You will not see the idiots-reviewers feeling that their Grand Slamms, Alexandrias and the farty Maxxes need any ULF support.   The Morons are just not familiar with the whole ULF subject but by the fact that Wilson made XS modules available it clearly indicate that David Wilson is familiar. The late John Dunlavy before he bailed out from his active involvement in audio did produce set large ULF modules. John told me that his SC-VI speakers that were considered goog bass performers still might be benefited by an addition of ULF channels.

I very much do not use Dunlavy or Wilson as some kind of reference or examples as they have this own sinister reasons to do what they did. Still.  I just merely point out that those options are available out there as much as it might be some other solution that can effectively to work below auditable LF region. I do encourage you if you have opportunity to audition an installation with ULF idea engaged. You might get that ULF bug and will find the no-ULF installations being too plain for your new taste.

Rerurn to Romy the Cat's Site