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   Home » Audio Discussions » The ULF cannel for my new listening room. (43 posts, 3 pages)
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  »  New  Macondo’s lowest channel...  Good highs...  Horn-Loaded Speakers Forum     148  1022106  09-15-2010
  »  New  Romy The Cat's new Listening Room..  Won't be the last time he makes that trip!...  Audio Discussions  Forum     478  2030720  03-28-2010
  »  New  Getting more power from SET vs. properly distorting SS...  Sound Board...  Audio Discussions  Forum     4  35098  05-09-2011
  »  New  How to get a LOT of SET power...  Not a refrigerator but......  Audio Discussions  Forum     101  621166  02-26-2006
09-26-2018 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,617
Joined on 05-28-2004

Post #: 41
Post ID: 25122
Reply to: 25121
Eventualy!
OK, I have found the problem I had with my digital and analog crossovers, now everything is consistent. It turn out that my contractor why built for me the IB manifold confused the polarity of right and left channels. I was not able to use the phase tester with analog crossover as the filtration too deep and I have no access to the drivers up close.  With digital crossover I was able to bypass the filter and test the phase and everything was in phase. With analog crossover the R and L IB channels were out of phase and the reason why the digital crossover sounded so well was because my digital crossover was set to invert polarity of channel B. I discovered the problem when I made the first time sweep for both channels. 
 
So, the digital filter is gone. I end up with 35Hz Bessel and below is the response for both channels individually. I am positively surprised, (VERY SURPRISED!!!) with final sonic result I got and with relatively low amounts of efforts it took. I will work with small bells and whistles of response and tonal/dynamic (tubes, cables etc…) aspect of sound but the basics is there…

IB_BothChannals.png



"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
09-26-2018 Post does not mapped to Knowledge Tree
anthony
Posts 236
Joined on 08-18-2014

Post #: 42
Post ID: 25123
Reply to: 25122
Awesome
You said it sounded like a phase problem and it was.  Couldn't have been easier to fix either. 
05-13-2019 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,617
Joined on 05-28-2004

Post #: 43
Post ID: 25417
Reply to: 25015
I might have very interesting result...
This weekend a local audio guy was visited me and we had some listening and some talks about my ne bass. I kind of make him to talk about is as I was listening with him and noted that it was a very not just nice but better then I remember if should be. I think as the year progresses and the temperate out jumped over 65 the driver’s suspension get softer and the resonant frequency dropped. The guy was listening my old playback in city and my last listening room. This is the third room that he hears and I naturally asked him about the bas in my last 3 listening rooms. He felt that the bass in my current listening room is different. As much as I pressed him to identify the different he was not able to come up with a description that it is “hard and punch but soft and lash at the same time”. Generally he is correct and I need to say that this infinite baffle is ended a VERY different animal and we generally not accustomed to it in audio, primary because infinite baffle is not a commercially product by definition. 
 
The infinite baffle for sure has that stunning softness that I very much appreciate that still in my view nowhere how soft life bass. How to get more softness out of bass? I think I need to drive my infinite baffle with crap SS amplification. Purely hypothetically, if I have 100-150W DSET bass amplification but properly done then driving my infinite baffle I might have very interesting result.


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
Page 3 of 3 (43 items) Select Pages:  « 1 2 3
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Macondo’s lowest channel...  Good highs...  Horn-Loaded Speakers Forum     148  1022106  09-15-2010
  »  New  Romy The Cat's new Listening Room..  Won't be the last time he makes that trip!...  Audio Discussions  Forum     478  2030720  03-28-2010
  »  New  Getting more power from SET vs. properly distorting SS...  Sound Board...  Audio Discussions  Forum     4  35098  05-09-2011
  »  New  How to get a LOT of SET power...  Not a refrigerator but......  Audio Discussions  Forum     101  621166  02-26-2006
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