This is a 184.54 mm long exponential horn with a 104.16 times expansion (from 506.71 mm² to 52778.76 mm²).
We need a transition from vertical to horizontal, and I decided upon a quarter ellipse...
Type: Posts; User: Jan Daugaard; Keyword(s):
This is a 184.54 mm long exponential horn with a 104.16 times expansion (from 506.71 mm² to 52778.76 mm²).
We need a transition from vertical to horizontal, and I decided upon a quarter ellipse...
I have helped make 3D drawings of the Bella Luna horn, and I am confident that Matthias will succeed in milling such horns.
This is the formula for capacitors in series:
https://en.wikipedia.org/wiki/Series_and_parallel_circuits#Capacitors
In this case, we have 1 / (1 / 30.61µF + 1 / 10.2µF) = ca. 7.65µF
I bought a pair of S3100 in 2000 and was so pleased with them that I bought one more pair in 2004. I'm as happy with this 4.0 surround sound system today as I was 10 years ago.
I have a 4.0 surround sound system composed of 2 pairs of JBL S3100. I have never missed a centre channel. It is, of course, a tall order to find and restore another pair of 4350, and that is,...
A nearly complete list of equipment reviewed in High Fidelity can be found here:
http://www.roger-russell.com/magrevhf.htm
Here you have 2 tuning suggestions, both with a 10 cm port, tuned to 52 Hz and 40 Hz, respectively. In the first case with a 2 cm deep port (which, in effect, is a hole in the front baffle), in the...
Some of us continue to listen to surround sound on LPs, in which case the phenomenon is called quadrophony because there are 4 channels.
The quadrophonic LPs are, admittedly, a mixed bunch, and...
The 150-4C went out of production before the advent of Thiele-Small parameters. Somebody may have determined the Thiele-Small parameters in recent years, but you can't rely on somebody else's...
Thanks, Grumpy.
It appears that the papers are from 1934 and not -- as stated by Mark Levinson -- from 1936. The wrong year made it impossible to find them.
That being said, I already knew the...
On a more constructive note:
I have in vain tried to find the 1936 Bell Labs papers referred to by Mark Levinson.
Can somebody provide an exact reference?
In answer to Widget's questions / comments:
>>Are they toed in enough?
The horn has the most regular frequency response when the listener and the 2 loudspeakers form an equilateral triangle, i.e....
>> the distance from the front edge of the basket
>> of one of your ME150H's to the dust cap glue line
That distance is 65 mm or 2 9/16 inches.
>> is the cone curved or straight?
The cone is...
I just took a picture of the ME150H woofer in one of my S3100:
The adapter is intended to be a parabolic horn, and I know for a fact that the black block is the one half of a parabolic horn, because I did the mathematical modelling and made the CAD drawing that...
Try using Google to translate your request from Chinese to English:
translate.google.com
Concerning SPL, you only state that the amp was "set to a very moderate SPL". Could you be more specific? 2nd and 3rd harmonic distortion vary greatly with SPL.
It would appear that the H93 alias the 2311 is a hyperbolic and not an exponential horn.
Given a 4.61" (117.1 mm) long horn with a throat diameter of 1.925" (48.9 mm) and a mouth diameter of...
Here is the owner's manual for the S2600 / S3100.
Please feel free to move the PDF file to the technical library and delete this post.
I have tried to invert the colours which makes the graphs more legible. Do let me know if it isn't helpful, and I will delete this post.
It is striking that there is suck-out at 19 kHz,...
The 150-4C went out of production several years before Thiele / Small parameters came into use: http://en.wikipedia.org/wiki/Thiele_Small_parameters
Your only chance is thus that a forum member...
Bonjour Roadmaster
J'ai fait des traductions pour le bénéfice des membres parlant anglais ou allemand. Je peux t'aider, si Matthias ne répond pas.
German translation:
Hallo Matthias
Ist es...
Where can we read more about cousin Bjørn's horns?
Steve: Thank you very much for the reproduction of the article in the June 1940 issue of Electronics.
Iain42: Thanks for the picture. It's sad to see that the (only?) extant woofer is in such...
I have just read this article about Rudy Bozak:
http://en.wikipedia.org/wiki/Rudy_Bozak#Loudspeakers
At the 1939 New York World's Fair, a tower topped with a cluster of eight 27" Cinaudagraph...