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Posted on: 8-18-06

Romy the Cat

Boston, MA
Posts: 9650



Thread: Adding one more spherical to Macondo.
           Reply: The new channel! Yes! I got it!!!  

E-v-e-n-t-u-a-l-l-y!!! Eventually the new “fundamentals channel” horn sounds as it should being incorporated in my Macondo!  The key was the  second order. I really never drove compression drivers to their 500Hz as I always used upperbass horns that give me quite a luxury to utilize MF drivers in very sparing mode, using shorter MF horns with wider dissipation and less beaming. I was always suspect that the folks who use 500Hz 6dB/octave crossovers in typical the 330horn is horno-BS. Now I concluded that, at least with S2, and use 250Hz horn I can not go lover then 1350Hz…. Not god for my objectives to us the “fundamentals channel”

I put today second order into the game to lover the crossover point. The lover I able to go was ~500Hz arithmetically. I did not have correct values and the filter turned out to be something between Bessel and Butterworth. The response got was following:

The sound of the complete systems with the new hors? Absolutely wonderful – something that I, in a special way, was targeting and hoping. The transients at lover mid range become faster, somewhat “crisper” and more coherent but at the same time did not loose their “harmonic puffiness” (I will look it this further though). The lower MF got filed with very noble, typical for the Vitavox S2, tonal nuances with very high tonal contrast. Actually the entire sound became more transiently-realistic andmove even – very pleasant and very hoped feeling.

The honk? Not there anymore, although I still will raise the crossover point to >-500Hz. I am listening now the things that destroy practically any horn installation if any, even remote. signs of honk is hiding in a system: the contralto singers. The Marian Anderson’s Schubert and Ewa Podlles’ Tchaikovsky, Stravinsky and Mussorgsky - what would be more complex for the lover midrange and upperbass? The Podlles’ “Songs and Dances of Death” really got me and ....it is after hearing is many-many times…

I think that this “transient evenness” makes the total dynamic to perceive as slightly higher. I do not know why but it sounds this way, or perhaps today electricity is better tonight. Anyhow, it was the very first very positive result and I will capitalize on it. I did not asses imaging and many other factors but for a time being I’m ordering the coils for a perfect Bessel curve (will measure the impedance at the band-pass frequency) and will fine-tine the new drivers at 600Hz, second order. I begin to be very optimistic about the new horn…

Rgs,
Romy the caT


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
 Posted Date All replies in the thread
  5-23-06   Adding one more spherical to Macondo.   (5-23-06)..Romy the Cat
  5-25-06   A loss of axial symmetry   (5-25-06)..drdna
  5-25-06   GOTO: am I a hypocrite?   (5-25-06)..Romy the Cat
  5-25-06   The axial symmetry at 750Hz?   (5-25-06)..Romy the Cat
  5-25-06   Re: GOTO   (5-25-06)..slowmotion
  5-25-06   Back to the imaging of the fifth wheel.   (5-25-06)..Romy the Cat
  5-25-06   Re: Adding one more spherical to Macondo.   (5-25-06)..Wojtek
  5-25-06   The fundamentals channel: the first blood   (5-25-06)..Romy the Cat
  5-26-06   Stacking the horns: bad idea   (5-26-06)..Romy the Cat
  5-26-06   Some examples with Fundamentals Channel   (5-26-06)..Romy the Cat
  5-27-06   The S2 “fundamentals channel” – first success!   (5-27-06)..Romy the Cat
  5-30-06   Another example of use of a Fundamentals Channel.   (5-30-06)..Romy the Cat
  8-9-06   The “Fundamentals Channel” horns are here...   (8-9-06)..Romy the Cat
  8-11-06   "Pile O' Horns"   (8-11-06)..NBC
  8-11-06   Re: "Pile O' Horns"   (8-11-06)..Romy the Cat
  8-11-06   Horn mouth termination   (8-11-06)..NBC
  8-12-06   Bad "choked" mouth termination.   (8-12-06)..Romy the Cat
  8-12-06   Re: Adding one to Macondo: Beautifully wasted Saturday!   (8-12-06)..Romy the Cat
  8-13-06   New “fundamental channel”: juts pictures.   (8-13-06)..Romy the Cat
  8-14-06   The “Fundamental channel” - the first blood.   (8-14-06)..Romy the Cat
  8-14-06   Re: The “Fundamental channel” - potential mechanical HF filter   (8-14-06)..cv
  8-14-06   Re: The “Fundamental channel” - potential mechanical HF filter   (8-14-06)..NBC
  8-14-06   The new channel, phase plug and the objectives   (8-14-06)..Romy the Cat
  8-14-06   I love, I love, I love it!   (8-14-06)..Romy the Cat
  8-15-06   The new channel: first disappointment.   (8-15-06)..Romy the Cat
  8-18-06   More mysteries and THE Honk.   (8-18-06)..Romy the Cat
  8-18-06   Re: More mysteries - bizarre crossover effects   (8-18-06)..cv
  8-18-06   No mysteries in there but still the bizarre crossover effect...   (8-18-06)..Romy the Cat
  8-18-06   The new channel! Yes! I got it!!!   (8-18-06)..Romy the Cat
  8-20-06   Re: 2nd Order filter   (8-20-06)..guy sergeant
  8-20-06   Yes, in my case 2nd Order.   (8-20-06)..Romy the Cat
  8-20-06   The “fundamental channel”: the final tune.   (8-20-06)..Romy the Cat
  8-20-06   Re: Honk that Horn?   (8-20-06)..hagtech
  8-20-06   The ordinary honk of the bad horns owners.   (8-20-06)..Romy the Cat
  8-23-06   The “fundamental channel”: What a beauty!!!   (8-23-06)..Romy the Cat
  8-26-06   Some thoughts about my New Macondo's Absolute Tone   (8-26-06)..Romy the Cat
  8-27-06   Re: Some thoughts about my New Macondo   (8-27-06)..NBC
  7-28-07   "Absolute tone" - I was missing that Sound   (7-28-07)..Romy the Cat
  8-7-07   The Fundamentals Channel around S2 is taken further.   (8-7-07)..Romy the Cat
  8-10-07   Redesign the Vitavox S2 back chamber’s cover.   (8-10-07)..Romy the Cat
  8-10-07   Vent or Augment?   (8-10-07)..jessie.dazzle
  8-10-07   The chamber pressure leaking.   (8-10-07)..Romy the Cat
  8-10-07   A range of spacers?   (8-10-07)..Paul S
  8-10-07   A microscopic pneumatic valve? The field-coil… diaphragm damping?   (8-10-07)..Romy the Cat
  8-10-07   Control that leak!   (8-10-07)..jessie.dazzle
  8-10-07   control that leak! Part II   (8-10-07)..jessie.dazzle
  8-10-07   The leaked S2, one step forward & two back   (8-10-07)..Romy the Cat
  8-10-07   0 - 1 SCFM at 50 PSI?   (8-10-07)..Paul S
  8-11-07   Controlling my own leak!   (8-11-07)..jessie.dazzle
  8-11-07   The Bermuda Triangle rediscovered?   (8-11-07)..Romy the Cat
  8-12-07   Slowly rolling back…   (8-12-07)..Romy the Cat
  8-12-07   Back to Bermuda...   (8-12-07)..jessie.dazzle
  8-12-07   Who cares what Vitavox did?!   (8-12-07)..Romy the Cat
  8-12-07   297.875Hz ; The magic number?   (8-12-07)..jessie.dazzle
  8-12-07   The Vitavox S2 back chamber stuffing.   (8-12-07)..Romy the Cat
  9-27-07   Crossing in the middle   (9-27-07)..jessie.dazzle
  9-28-07   I migh be the phase "clicking"....   (9-28-07)..Romy the Cat
  9-28-07   Further observations   (9-28-07)..jessie.dazzle
  9-28-07   "I will try to take some measurements soon"...   (9-28-07)..Romy the Cat
  9-28-07   Correction & Vertical shift   (9-28-07)..jessie.dazzle
  9-28-07   Three mid channels crossovering - playing in the middle.   (9-28-07)..Romy the Cat
  1-13-08   The 6-ch Milq: Fundamentals vs. Injection Channels.   (1-13-08)..Romy the Cat
  6-10-08   How JBL is trying to do my “fundamentals channel”.   (6-10-08)..Romy the Cat
  6-20-08   250Hz tractrix upper range..?   (6-20-08)..NBC
  6-21-08   This is a universal crossover rule   (6-21-08)..Romy the Cat
  6-22-08   Specifically...   (6-22-08)..NBC
  10-28-08   The Fundamental Chanel gets a new driver.   (10-28-08)..Romy the Cat
  10-29-08   S2 : How low can you go ?   (10-29-08)..jessie.dazzle
  10-29-08   The low-path knee of Fundamentals Channel.   (10-29-08)..Romy the Cat
  10-29-08   Yep, I went for it. It is S3 now.   (10-29-08)..Romy the Cat
  10-30-08   Correction upon further inspection of the Black Hole   (10-30-08)..Romy the Cat
  10-30-08   Fundamental evolution   (10-30-08)..jessie.dazzle
  10-30-08   Channels, drivers design and some RTA rant.   (10-30-08)..Romy the Cat
  10-30-08   MF ramblings &&&   (10-30-08)..jessie.dazzle
  6-10-09   New options for Fundamentals channels.   (6-10-09)..Romy the Cat
  6-11-09   Efficiency?   (6-11-09)..Paul S
  6-28-09   The new life of the Fundamentals Channel.   (6-28-09)..Romy the Cat
  3-16-10   Macondo’s alternation of Fundamentals Channel.   (3-16-10)..Romy the Cat
  9-27-10   New Fundamental Channel.   (9-27-10)..Romy the Cat
  9-28-10   Option   (9-28-10)..Dominik
  9-28-10   Stereolab   (9-28-10)..el`Ol
  9-28-10   Revisiting the fundamentals   (9-28-10)..jessie.dazzle
  9-28-10   Macondo with wings and wide Fundamentals …   (9-28-10)..Romy the Cat
  9-28-10   Multicellular Horns   (9-28-10)..Dominik
  9-28-10   15 cell vs.18 cell   (9-28-10)..Romy the Cat
  9-28-10   Where to cross MF & theory on depiction of depth   (9-28-10)..jessie.dazzle
  9-28-10   The thoughts salad.   (9-28-10)..Romy the Cat
  9-28-10   Depth in stereo & the Flat Earth Society   (9-28-10)..jessie.dazzle
  12-13-10   Fundamental Channel, what a power!!!   (12-13-10)..Romy the Cat
  3-31-11   S3 as a low MF driver   (3-31-11)..gordan
  3-31-11   Depending on your amplification   (3-31-11)..Romy the Cat
  4-1-11   S3 and class A amps   (4-1-11)..gordan
  4-2-11   It is about magnet and SS type.   (4-2-11)..Romy the Cat

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