|
|
| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
|
|
 |
|
|
|
|
|
[quote user="anthony"]
http://goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=6011#6011The back chamber is very important...about half of the drivers energy goes back there so it needs to be strong if you don't want it to reson...
|
|
If you ask me the compression drivers is like the jbl 2420/2470 design only with an other back chamber. And the low freq driver really makes me think of an old alnico driver of jbl 2220A http://www.lansingheritage.org/images/jbl/specs/pro-comp/2420/p...
|
|
jd: Looks very ..cool! I can't wait to see some more photos!Romy wrote:"1) You might not need rubber gaskets at back chamber of your mid-bass horn. "-I was thinking the same. But perhaps rubber rings can be used to seal the back chamber to make ...
|
|
[quote user="Romy the Cat"] CO wrote:If you havent already, why not explore the Infinite baffle concept? Or a long terminated back chamber for that matter.
Current drive should also be very good on the lower registers.
I did it. Any situation ...
|
|
I also disagree. You circumvent the whole theory if compression drivers. The whole point in a compression driver is that anything in back chamber is irrelevant. Haralanov, all that you need to do is to make your own experiments, the practical exper...
|
|
From what I gather the JBL 2169 driver is an 8" cone speaker with a sealed back chamber. If this is so it was designed for a specific horn. It shall be used in that horn or a very similar one. The back chamber should be tuned/designed for the horn ...
|
|
The Other End of the Single End: Modern Horns Done With Flare An Interview With Dr. Bruce Edgarby Dave Glackin, printed in POSITIVE FEEDBACK. 1996
Dave Glackin interviewed Dr. Bruce Edgar in his home, prior to the 1996 WCES. A follow-up on the speak...
|
|
Jessie, I have moved your post to your 45Hz horns thread but then decided to keep it here as some of my comments would be about entire system not only about your midbass horn. Anyhow, there is nothing there to laugh and it is pleasant to see that som...
|
|
[quote user="skushino"] • total horn length (incl. back chamber) shall not exceed 1,00m • the horn shall have conical approximation of a hyperbolic flare contur with m=0.6 • the horn shall have a 5/16 mouth size of a free space horn •&...
|
|
This there is the last in the “THE PROBLEMS WITH HORNS” cycle. The previous threads might be found at:
Problems with horns: tweeters.Problems with horns: mid-range horns.Problems with horns: mid-range drivers.
This would be probably the most contro...
|
|
[quote user="js"]Thanks for the reply. I'm using a Jabo KH-55 horn for hf/upper mid, so I think I'll have to experiment with different size chambers. Beyma quote the volume displaced by the driver as 5.5 litres, so I'll start by trying a 9 litre (g...
|
|
Yes, zako, the subject of ventilation and insulation is well-consider. The cathedral roof made well – it has the top ridge raised and vented. In addition I have powerful attic fan running on the other side of house. The heat insulation is another sub...
|
|
As I understand they are 110-125Hz horns, they look fine to me. The thickness of mouth I would say a bit too thin but it is trade off as the give horn has no horizontal edge which is better acoustically even though loose slightly visually. There is o...
|
|
Interesting idea. I do not know a lot about pluming and I do not know if 17 PSI is enough. The 17 PSI might be high for continue pressure but what driver does are impulses and I might only presume that in a long run the driver would push the pl...
|
|
Herman, horn dimensions does not described by size of driver but only size of throat. It will be absolutely nothing changed in the horn dimensions if you go from between 10" and 12" driver. Sure you would need a bit larger back side of the horn to ac...
|
|
[quote user="unicon"]Roman, first of all I feel good about your bass horn that's what i have always bin dreaming and if i get the space for it wont even waste a minute I think you already know it or using it ...You mentioned using a foam in back ch...
|
|
I'm a new reader of your website and one subject which interests me a lot is that of upper bass horns.As you have noted time and again (with which I agree almost completely, after reading a lot of 'research' [many claiming to defy the laws of physics...
|
|
I agree, there is probably very little to learn luthiers that is directly applicable. However, I've always been interested in the similarities between good speaker cones and thin lacquerd spruce. Sort of a crispy pingy sound even with just a gentle t...
|
|
I spent some time with my back chamber, trying to drive the driver resonance heighted. I built a sealed sarcophagus as a back chamber (if somebody are interested I can post a picture) approximately 1.5 gallons but it moved Fs for 700Hz. Then I began...
|
|
I did a lot of those experiments a few years back, stuffing the back chamber of S2 driver with all imaginable things. During that time I did not use a dedicated lower MF channels and was concerned only about the S2 top end. I did not detect any diffe...
|
|
Ming,
I was thinking about this SG146LD4 driver again. They say: 106 dB/ 20 - 500 Hz, 19,000. Well, let look at this a little bit further as I feel that might be very interesting driver.
I admit I never heard about this driver. All that I know abo...
|
|
Wow, Jessie, thanks for the detail deals of your idea. I have spent last evening to contemplate many possible design configurations and I desired to discard all my former ides of metal fine-tuning, even my machinist in on standby expecting my ord...
|
|
Yes, it turned out to be the emails from GOTO importer. I am not completely understood if the horn at the picture above is an official GOTO product. The Ming Su said that the horn was build locally by Jeffrey Jackson with the support of GOTO but then...
|
|
Somebody from AA was asking about electromagnet. The subject pup up here from time to time but this time Bruce Edgar uploaded an interesting comment. Bruce is not a typical AA Moron and if he says “inaccurate things” then it is not due to ignoran...
|
|
[quote user="Romy the Cat"]I mean the driver from 14Hz to 150HZ gas absolutely linear impedance as it has no active load. I look at all of it and felt so tiered and I walked out if it. I think in the new room the horn is shooting into the wide open s...
|
|
Hm, very different and very opposite result, interesting. Are you using the same S2 diaphragm as I do – the metal suspension? If yes then it would be the only one explanation that I might come up with.
Sometime the compression drivers with horn form...
|
|
I just love the way this Carfrae looks!I have been tempted to make something similar, but turn it into a front loaded horn (of course), say turn the driver around and add a back chamber on the back of it. Make a nice volume tuning device. And then...
|
|
The frequency where your room turns into a pressure chamber changes the way that we perceive bass. This is how we get "bass" in a too small space like an automobile. When removing the ULF channel, all of the music is transmitted in a natural way for ...
|
|
They mention an intricate back chamber for the high frequency unit, maybe thats the primary function of the tube, apart from positioning the unit relative to the rest....
|
|
[quote user="jessie.dazzle"]Do I understand correctly: AG used Fane 8Ms in the Trios upper bass horn?[/quote] Oh, no! AG in Trio’s upperbass horn used similar 8” driver with 103 sensitivity. That driver was bad and it made me to look for a replacemen...
|
|
|
|
|
All context of this site except the Forum's posts
Copyright © Roman Bessnow 2004-2024
All messages within the Site’s Forum Copyright © by
authors of the posts
|
|
Last 24-hours posts: |
1 |
|
 |
|
|
Total human visitors: |
42,918,145 |
|
|
|
|
|
|