3-way design with Jamo R909 mid/high; R907 bass - diyAudio
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Old 27th December 2011, 09:54 AM   #1
muskel is offline muskel  Estonia
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Default 3-way design with Jamo R909 mid/high; R907 bass

Hello everyone

I wish to build a pair of loudspeakers like this:
http://www.audiofil.no/images/respon...KV900_1314.jpg

I allready have the the drivers

2* http://www.scan-speak.dk/datasheet/pdf/d2905-970000.pdf

2* E0037-08S W15CH001

2* Jamo R907 woofers, i have the measurements for it. Crossover will be active - DCX2496 or similar.

Can i get some help with the design and CAD modelling ?
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Old 27th December 2011, 11:07 AM   #2
AllenB is online now AllenB  Australia
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Hi muskel. These have the potential to be an attractive piece of furniture. How are you going with it so far?
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Old 27th December 2011, 12:45 PM   #3
muskel is offline muskel  Estonia
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Im in the process of planning right now. I have the drivers but need some input on how to further my design.
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Old 27th December 2011, 01:25 PM   #4
AllenB is online now AllenB  Australia
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You can start by working out some enclosure sizes for the woofer and mid, and putting them in boxes. I assume the mid should go in a closed box and the woofer seems to be in a vented one. The external dimensions are on the site you linked to. Try not to incorporate bumps or steps across your baffle, e.g. flush mount your drivers (particularly tweeters), and round the cabinet edges where possible.

Do you have plans to measure them once you have them in boxes?
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Old 1st January 2012, 10:18 AM   #5
muskel is offline muskel  Estonia
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This is how far i got in Bassbox Pro 6:
http://dl.dropbox.com/u/55237764/Jamo%20M15CH-JAM.bb6

I cant seem to figure out the box dimensions.

Should i perhaps port both the mid and woofer ?
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Old 22nd September 2013, 12:01 PM   #6
muskel is offline muskel  Estonia
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I have the speakers built now and would like to use something like a MiniDSP for the crossover. The thread about the electronics is here: Digital crossover for 3-way speakers
Later i will post pics of a working system in here.
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Old 22nd September 2013, 07:34 PM   #7
Juhazi is offline Juhazi  Finland
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Just use minidsp! If you want to make it easy, buy 4x10Hd and the plugin. If you want a distributed system, then 2x4 modules or boxed and plugin. You will also need UMIK-1 and REW or some other analyzing system (or a friend with those) to set up the system.
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Old 25th September 2013, 12:53 PM   #8
muskel is offline muskel  Estonia
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I want the 4x10Hd, been looking at that for some time. What is the better option for a microphone ? The UMIK-1 has a built in ADC but i could also get an external device so the microphone preamp and ADC are separate from the microphone.
Behringer: U-PHORIA UMC204

Last edited by muskel; 25th September 2013 at 01:08 PM.
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Old 25th September 2013, 07:07 PM   #9
Juhazi is offline Juhazi  Finland
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Hi, U-Phoria looks like a gem! But if you are thinking of using it as DAc, it doesn-t have optical or coaxial in. Alas, preferably find a mic that comes with calibration file!
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Last edited by Juhazi; 25th September 2013 at 07:09 PM.
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