here is a LINK to an old FOCAL small Column design i did in 1988 but this should be ok for 7N402DBE + MDT 30.
http://www.audiovideoforum.de/viewtopic.php?t=398
Even if all is in German (German Kitbuilder magazine) u can see the Xover and encosure dimensions at the end of the article.
Use the MDT30 instead of FOCAL Tweeter and dont use R1 in that Xover, maybe change C3 to 6,8 uF.
http://www.audiovideoforum.de/viewtopic.php?t=398
Even if all is in German (German Kitbuilder magazine) u can see the Xover and encosure dimensions at the end of the article.
Use the MDT30 instead of FOCAL Tweeter and dont use R1 in that Xover, maybe change C3 to 6,8 uF.
Zoller-thanks for the info. Do you hve an optimum box size for the 212's if I decide to use them?
Re: Focal 7N412-DBE
I stumbled across this thread when Googling for some other Focal info.
Although my response may be really late for your purposes, it may interest you to know that I have the EXACT datasheet for the Focal 7N412-DBE.
Still interested?
BTW, I agree with Zoller; you would do best by using just the 7N412-DBE and forget the mid. This will make the project more manageable and improve your chances for a good result. A good 3-way can be tricky to get right. That said, the curve for the 7N412-DBE has a broad peak of about 3 dB around 2 KHz which will require some attention.
Hope this helps and is not too late.
I stumbled across this thread when Googling for some other Focal info.
Although my response may be really late for your purposes, it may interest you to know that I have the EXACT datasheet for the Focal 7N412-DBE.
Still interested?
BTW, I agree with Zoller; you would do best by using just the 7N412-DBE and forget the mid. This will make the project more manageable and improve your chances for a good result. A good 3-way can be tricky to get right. That said, the curve for the 7N412-DBE has a broad peak of about 3 dB around 2 KHz which will require some attention.
Hope this helps and is not too late.
To Zoller,
I've owned your Imagination speaker systems for a few years now, indeed my model and bigger Solutions etc have a cult following here in Poland. I hope the moderators won't mind my asking about availability of spare drivers for the Imaginations.
Kind regards,
Kris
I've owned your Imagination speaker systems for a few years now, indeed my model and bigger Solutions etc have a cult following here in Poland. I hope the moderators won't mind my asking about availability of spare drivers for the Imaginations.
Kind regards,
Kris
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