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   Home » Horn-Loaded Speakers» Experience Music Horn Installation @ VSAC (26 posts, 2 pages)
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  »  New  Bookshelf Horns..  How the menacingly-empty idiots design audio....  Horn-Loaded Speakers Forum     3  36778  03-17-2010
08-09-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,715
Joined on 05-27-2004

Post #: 21
Post ID: 11329
Reply to: 11328
The RCA 1443
fiogf49gjkf0d
If the RCA 1443 the same as 1428B but without the field coil then it might be even more interesting than 1428B. As I understand that those prewar driver had phenolic diaphragms that generally shall have tendency to be a bit soft with low order filters. The field coil would soft them even more and probably perm magnet that do not “sink” would be better idea. I do not know diaphragms Steve and Rich use - I think it was carbon fiber… It is interesting that you feel that your RCA driver begin to breathe when it driven lover. I wonder why it is so. Is the cone over-damped that it does not feel free unless you stress it with LF. How does it work with very low level signals? How the subjective perseption of the driver’s HF knee changes when you move the crossover from 600Hz to 400Hz, or go second order with 400Hz? Sine you have both 1443 and S2 it would be very interesting to put both of them in respectfully best configuration and to observe how and much each driver  will be able to go into depth of own expressivity. That what is what the audio idiots shall be doing during their congregation but they instead are mostly participating in there in the mutual audio dicks inner-sucking …

Regarding the Jeffrey's comments to you about the horns. As we can see it turn out that it lead you to discover a driver not the horn. So, it looks it has less to do with horn then with driver.  So, it you cross your RCA 1443 at 350Hz then it will not run all the way up and you would need one channel above and two channels below… Is it what you are trying to do?

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
08-09-2009 Post does not mapped to Knowledge Tree
cv
Derby, United Kingdom
Posts 173
Joined on 09-15-2004

Post #: 22
Post ID: 11330
Reply to: 11329
Rca 1443 continued
fiogf49gjkf0d


No, the 1443 is also a field coil, just a different voltage.

Re: the configuration - indeed; I am hoping to get 300Hz with the RCA, then the S2 from between 1k-1500 and up, + tweeter. Below the RCA willbe a compromise to begin with, but hopefully will lead into 5 ways.

Regarding the RCA breathing when driven lower - I'm not entirely sure at this point. I do know that it was not happy on the 340Hz horn.  
Steve and Rich's cones are carbon fibre, the originals are phenolic. They do seem to sound different, but its early days.

It will take a while to get this all sorted, but I will report back when ready... I will try observing at your suggested x/o experiments in particular - those settings should work (or at least not destroy) the S2 and enable an interesting comparison.

 

08-09-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,715
Joined on 05-27-2004

Post #: 23
Post ID: 11331
Reply to: 11330
That might be interesting…
fiogf49gjkf0d
 cv wrote:
Re: the configuration - indeed; I am hoping to get 300Hz with the RCA, then the S2 from between 1k-1500 and up, + tweeter. Below the RCA willbe a compromise to begin with, but hopefully will lead into 5 ways.

I see, you want use us the RCA as fundamental channel and then attach the S2 as MF channel. It is similar to what Jessie did; he made his fundamental very large and I think it was very smart move. I do not know what driver we use, I think he use S2 or S3. The RCA looks like run lower, the S2 will not be able to handle 300Hz. If you are willing to get 300Hz with the RCA then 160Hz horn might be too small horn. Anyhow, if I were you would try to make the RCA to run from 450 to 6K-7K to substitute the S2 in 180-250 Hz horn… That might be interesting…

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
11-01-2009 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,715
Joined on 05-27-2004

Post #: 24
Post ID: 12117
Reply to: 11331
RCA vs. Vitavox without Sarah Palin's Intelligence.
fiogf49gjkf0d

The subject it itself is very interesting and although it not directly relates to the Experience Music Horn Installation but there was some talk about in this thread. There was conversation on the similar subject at British hifiwigwam forum

http://www.hifiwigwam.com/view_topic.php?id=28094&forum_id=19&jump_to=738445

The whole thread is very much not worth to look at but from page 19 it get interesting stating from Coco comments. I generally do not participate in the internet discussions where my former brazilin defecation ‘angeloitacare’ is posting but I hope he long gone from there. It would be interesting if CV and him local British folk would play with S2 and RCA 1443/1428B and try to figure out what is the most characteristic for sound of those drivers.

CV was right in the page #21 of the above-linked thread - we juts are scratching the surface of knowledge how the RCA drivers might sound. Cogent do not use RCA but they have their own version based ups the RCA design. I do not see anybody ever talk or think about sound of Cogent RCA.  They might be good or not – not one knows and not one unfortunately looks into Cogent’s RCA sound seriously.  There is also community of all those cretins around the Oswald's Mill who in one way or another trumpet RCA drivers but they are the ultimate Sarah Palins of Audio and to expect anything sensible from them is like to expect from a monkey to learn a multiplication table.

So, let see where the Brits will be landing at…

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
12-02-2010 Post does not mapped to Knowledge Tree
Dominik
Poland
Posts 48
Joined on 09-14-2008

Post #: 25
Post ID: 15037
Reply to: 12117
New drivers?
fiogf49gjkf0d
It looks like Jeffrey Jackson start to build new driver:

http://www.elevenhorns.com/welcome.htm

http://myemia.com/horn.html
11-25-2012 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,715
Joined on 05-27-2004

Post #: 26
Post ID: 18774
Reply to: 12117
RCA MI-1428B vs Vitavox S2
fiogf49gjkf0d
I have a guy visited me today who have high-voltage version of RCA 1428. I asked him to provide is feedback what in his view difference sonic between his 1428 and my S2 driver. Of course it might be large difference in the way how we use our drivers. For instants the only one time I hear it was in the home of an unspeakable idiot Jonathan Weiss who with his barbarian hands and brains vandalizes whatever he touches. I have no reasons to suspect that my today visitor misuse his 1428 driver. He has multi-amped multi-way horns with his own amps. I do not know how his installation sounds (he is not from US) but his subjective feedback I find interesting and turn out to be exactly what I expected.

He feels that 1428 smoother sounding driver with more mellow and more placid response to dynamic, contrast and to colors. S2 is slightly more responsive to contrast, more aggressive, more transient and more granular.  It pretty much correlates with what I heard and that brings a question: why the people who use 1428 drive this driver with more idle amps? Does this expressive sluggishness is the part of the “phenolic sound” that I do not like in many vintage drivers of it is inability of the drivers user to make the drivers to give the sound that they have in their minds?

I do not feel that S2 is better driver then 1428 or vise versa, I just expose what my visitors said today and typing is while he is listening my Bruckner….


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
Page 2 of 2 (26 items) Select Pages:  « 1 2
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Macondo's Axioms: Horn-loaded acoustic systems..  No wonder...  Horn-Loaded Speakers Forum     72  457625  07-29-2007
  »  New  Eventually - a reasonable midbass horn from GOTO..  Clever DIY going on where?...  Horn-Loaded Speakers Forum     97  995338  11-19-2007
  »  New  45Hz Bass Horn..  Can We Ever be Saved From Ourselves?...  Horn-Loaded Speakers Forum     23  261680  09-19-2006
  »  New  About bass horns by Johan Dreyer..  There are lowest bass horns and there are not lowest b...  Horn-Loaded Speakers Forum     5  74797  02-11-2008
  »  New  Chinese upperbass horn...  Some sensibility about bass reproduction...  Horn-Loaded Speakers Forum     35  294904  08-08-2005
  »  New  Barn Conversion - James' Project..  The vintage vs. contemporary compression driver....  Horn-Loaded Speakers Forum     28  295024  02-04-2007
  »  New  Midbass Horns and Real Estate...  Just a youtube video......  Horn-Loaded Speakers Forum     247  1697156  07-26-2009
  »  New  RCA driver made in China..  About the serious Chinese High-End...  Horn-Loaded Speakers Forum     2  27140  08-26-2009
  »  New  A new CES 2010 loudspeaker?..  Good idea, indeed......  Horn-Loaded Speakers Forum     15  135037  01-13-2010
  »  New  Bookshelf Horns..  How the menacingly-empty idiots design audio....  Horn-Loaded Speakers Forum     3  36778  03-17-2010
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