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Old 5th February 2011, 05:29 PM   #61
Helmuth is offline Helmuth  Netherlands
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The same Vtc raised to 9 litre. 0,5phi
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File Type: png Schermafbeelding 2011-02-05 om 19.27.47.png (30.9 KB, 605 views)
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Old 5th February 2011, 05:57 PM   #62
Helmuth is offline Helmuth  Netherlands
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A other driver that I advised because it has low THD and big x-max it is very use-full for active compensation of the low-end.

With active compensation -3db at 30Hz (xmax5,5mm 128W) max spl within x-max is 113dB 1mtr.


With this results it is possible to have a horn that extends to 30Hz with a max sound pressure of 113dB in the living room.

Click the image to open in full size.

0,5 phi
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Attached Images
File Type: png Schermafbeelding 2011-02-05 om 19.47.51.png (31.3 KB, 688 views)
File Type: png Schermafbeelding 2011-02-05 om 20.00.43.png (30.8 KB, 1436 views)
Attached Files
File Type: pdf result beyma sm115n.pdf (27.0 KB, 43 views)
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Last edited by Helmuth; 5th February 2011 at 06:02 PM.
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Old 5th February 2011, 06:20 PM   #63
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Quote:
Originally Posted by Helmuth View Post
It is the predicted response from the mouth output............
My point is that for the horn to do pretty much all the filtering requires the roll off response to include the driver's pistonic output, i.e. true band-pass (BP) which without inputting your design doesn't seem to be the case.

Anyway, instead of posting a response plot, please export HR's file as a .txt file to attach to your posts, so that we can download and export it to HR to see and/or save the design.

GM
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Old 5th February 2011, 06:27 PM   #64
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Quote:
Originally Posted by Lynn Olson View Post
That's why I'm curious about curved horns - would they have less problem with notches than a folded horn, or not?
Yes, if a Nautilus style expansion as WE proved early on with its early ultra wide BW horns.

GM
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Old 5th February 2011, 06:42 PM   #65
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by GM View Post
My point is that for the horn to do pretty much all the filtering requires the roll off response to include the driver's pistonic output, i.e. true band-pass (BP) which without inputting your design doesn't seem to be the case.

Anyway, instead of posting a response plot, please export HR's file as a .txt file to attach to your posts, so that we can download and export it to HR to see and/or save the design.

GM
Here you are.
Attached Files
File Type: txt beyma.txt (51.7 KB, 31 views)
File Type: txt monacor.txt (51.6 KB, 12 views)
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Last edited by Helmuth; 5th February 2011 at 06:46 PM.
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Old 5th February 2011, 11:50 PM   #66
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I meant export the 'input parameters' table (HELP pg. 8). It should look like this except with your design's data of course:

GM
Attached Files
File Type: txt 123.txt (416 Bytes, 18 views)
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Old 6th February 2011, 08:11 AM   #67
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by GM View Post
I meant export the 'input parameters' table (HELP pg. 8). It should look like this except with your design's data of course:

GM
Ok?

Beyma SM115N driver to make active extended response down to 30Hz.http://profesional.beyma.com/pdf/SM-115%20NE.pdf
low thd
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2PHI
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1Phi
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0,5PHI
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Attached Images
File Type: png Schermafbeelding 2011-02-06 om 10.15.31.png (31.2 KB, 649 views)
File Type: png Schermafbeelding 2011-02-06 om 10.27.31.png (41.6 KB, 649 views)
Attached Files
File Type: txt spa15pa.txt (400 Bytes, 11 views)
File Type: txt beymasm1.txt (405 Bytes, 16 views)
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Last edited by Helmuth; 6th February 2011 at 08:28 AM.
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Old 7th February 2011, 01:43 AM   #68
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From what I understand, the Klipsch Jubilee was the best rear horn design from the Klipsch engineering staff. I've attached a few pictures for discussion.
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File Type: jpg DIY Jubilee.jpg (183.2 KB, 172 views)
File Type: gif Jubilee Build.gif (115.3 KB, 492 views)
File Type: jpg Klipsch Jubilee Response.jpg (90.7 KB, 230 views)
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Old 7th February 2011, 06:04 AM   #69
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by LineSource View Post
From what I understand, the Klipsch Jubilee was the best rear horn design from the Klipsch engineering staff. I've attached a few pictures for discussion.
It is a front loaded horn just like the La scala only a longer horn to get a lower cutoff frequency.

A Longer horn is better to get more subbas but it is less desirable for mid frequency. That is the problem with making design choices to get a advantage you encounter a disadvantage
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Old 26th February 2011, 04:04 PM   #70
Helmuth is offline Helmuth  Netherlands
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Some one who likes to see this from a frontloaded horn with br-port ?

-6dB 25Hz.

Download your specs here. sp12/100pa
MONACOR INTERNATIONAL:Produktdetailseite IMG Stage Line

Click the image to open in full size.
Attached Files
File Type: pdf Hornresp.pdf (26.5 KB, 692 views)
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Last edited by Helmuth; 26th February 2011 at 04:16 PM.
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