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Posted on: 10-28-08

Romy the Cat

Boston, MA
Posts: 9650



Thread: Adding one more spherical to Macondo.
           Reply: The Fundamental Chanel gets a new driver.  
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As I wrote before I picked some Vitavox S3 driver.

http://www.GoodSoundClub.com/TreeItem.aspx?PostID=8619

and I was expediting with them recently to use in Fundamental Chanel. My idea was that S3 might care LF knee better then S2. In past I had S3 and I discard in rivalry with S2 as S2 was much more interning in HF region. The ceramic driver of S3 needs different type or amplification that I do not use. However, at that time I did not use Fundamental Chanel.

There are some advantages in S3 design that feel might be beneficial for sub 1K use of S3 drivers. The S3 had more accurately made output channel. I think it shell more benefit FH but who knows… Also, and this is a very big for me the S3 has the diaphragm plate decupled from the back plate. This decupling is very bad thing in S2.

Vitavox_S3.jpg

So, I mounted the S3 into the Fundamental Chanel and spent some time to listening this channel. I have to say that I like it but not what I expected. What I expected the S3 does very well – it runs at 600Hz with first order with no “issue” in the bottom region (250Hz Tratrix horn). The next step will be lowering the crossover point to 500-550Hz (that are ultimate objectives) but I need to open the Melquiades amps to do it. What however very much surprised me is the dynamic confidence with witch S3 cares the duty at 600Hz - very imprecise. The S2 was if not dying but really at the very last octave of it’s potency. If I run the Fundamental with S2 at 0dB in relation to MF then I felt it. Since I run the Fundamentals at minus ~ 9dB then the S2 was doing fine. The S3 does have more dynamic balls and it looks like at 600Hz it is still very much not “there”. It would be interning to drop crossover point with S3 at try it in 180Hz-210Hz horn.

I do not have a final decision if I go there. I defiantly will not go for 180Hz-210Hz horn. If I use the S3 then now much I will be able to drop in crossover until my 250Hz hors will feel it. The S3 is shorter then S2, so I would need to re-alight Fundamental Chanel. Still it look like S3 has more power handling at the same frequency, or perhaps it the original “high-pressure” clear diaphragms that my drivers came with. In any cases, the result so far stimulating to stick with S3 for LF region.

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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