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Multi-Way Conventional loudspeakers with crossovers

135Hz Segmented Horn Midbass Build
135Hz Segmented Horn Midbass Build
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Old 20th September 2016, 01:46 PM   #11
POOH is offline POOH  United States
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Nice, looks usable to 3-400 HZ. What will you use for upper midrange? If you extend the throat and use 8PE21 B&C it will go an octaveor more higher.
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Old 20th September 2016, 03:18 PM   #12
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by frangus View Post
Nice build. Is there a secondary flair on the horn?



My Beyma 12p80ND has similar specs to this driver. Hmmm...


There is but it turned out to be less of a flare due to a small calculation error I made, that will be corrected on the next pair I build (since his was a prototype).

Thanks!,
Javad
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Old 20th September 2016, 03:20 PM   #13
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by pcgab View Post
I built a pair of John's 135hz mid-bass horns with the 8pe21's....



Cheers!

Very nice! I have plans for those too and may try them out, thanks for sharing your build!
Javad
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Old 20th September 2016, 03:23 PM   #14
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by LewinskiH01 View Post
I thought Inlow's 135Hz horn used the 8" driver instead of the 12"?

BTW, why did you choose the 135Hz horn instead of the 100Hz? Just trying to understand your thought process.

Nice build as usual from you!

Hey, there is an 8" version too, what I built is a modified version of the 100hz 12", with slightly higher tuning it extends higher into the 800hz range and according to John is an overall better sounding design for audiophile listening over the 100hz version. I wanted the extra punch the 12" provides over the 8".

Thanks!
Javad
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Old 20th September 2016, 03:31 PM   #15
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by POOH View Post
Nice, looks usable to 3-400 HZ. What will you use for upper midrange? If you extend the throat and use 8PE21 B&C it will go an octaveor more higher.


It's only down 5db to 800hz so with a little miniDSP EQ it should flatten right out. I plan on testing it and the radian horn xo in the 500-800hz range to see what I like best.

Thanks!
Javad
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Old 20th September 2016, 03:34 PM   #16
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by fmena View Post
How big is your dedicated room?

Just wondering ... are you going use minidsp or something along similar lines for subwoofer integration below the 135hz horns?


It's a big room acoustically, it's open on one side to a hallway and the rest of the house, but the room itself is about 30x15'.

Yes will be using a miniDSP 4x10 to EQ, XO and time align everything.

Thanks!
Javad
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Old 20th September 2016, 04:08 PM   #17
JShadzi is offline JShadzi  United States
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Default 135Hz Segmented Horn Midbass Build

I'm also building a bass reflex box for the 12" B&C 12PE32 so I can measure and listen to and compare to the horn, the port is also plug gable so I can test sealed as well. The enclosure is 1 cubic foot which models well for this midbass and tuned to 90hz.

Click the image to open in full size.

The port, 4" by about 1.5" tuned to 90hz

Click the image to open in full size.

Thanks,
Javad

Last edited by JShadzi; 20th September 2016 at 04:12 PM.
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Old 20th September 2016, 10:06 PM   #18
Eldam is offline Eldam  France
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what a hand skill with wood JS !

Congrats.
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Old 22nd September 2016, 02:00 AM   #19
carpenter is offline carpenter  United States
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135Hz Segmented Horn Midbass Build
Quote:
Originally Posted by JShadzi View Post
It's only down 5db to 800hz so with a little miniDSP EQ it should flatten right out. I plan on testing it and the radian horn xo in the 500-800hz range to see what I like best.

Thanks!
Javad
Very nice work, my friend! It'll be interesting to see the measurements with the second build. Also, how did you place the mic? Do the measurements flatten out over distance?

Thanks for taking the time to exhibit your project. I'm looking forward to seeing the completed system.

John Inlow
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Old 22nd September 2016, 05:30 AM   #20
JShadzi is offline JShadzi  United States
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Quote:
Originally Posted by carpenter View Post
Very nice work, my friend! It'll be interesting to see the measurements with the second build. Also, how did you place the mic? Do the measurements flatten out over distance?



Thanks for taking the time to exhibit your project. I'm looking forward to seeing the completed system.



John Inlow


Thanks John! I'll do more measurements, I'll also post the response in the ported box, problem is the further info back the room starts interacting, im quite happy when things are in a 5db range essentially.

This was with the mic about 6" outside the horn exit.

Javad
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