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Multi-Way Conventional loudspeakers with crossovers

Any experiences with Faital 12PR320 : 12" driver for 40-500 Hz
Any experiences with Faital 12PR320 : 12" driver for 40-500 Hz
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Old 14th June 2018, 08:23 AM   #11
zmyrna is offline zmyrna  United Kingdom
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your choice of mid and bass drivers both have the same Fs of 42hz
i'll say that and leave it there

in troels' dtqwt, 8" and 12" fire into the same horn; the benefit is that there is no high pass filter on the 8" (saves a lot of $$$ by avoiding the large expensive capacitor). you are not getting any bass from that 12" unless you build a tapped horn or tqwt.
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Old 14th June 2018, 10:36 AM   #12
scholl is offline scholl  United States
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Not those but I use the 310s and I'm very happy. Nice punchy sound and good vocal tone. I get an honest 55hz low end at 96db.
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Old 14th June 2018, 08:44 PM   #13
gug42 is offline gug42
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Thank you ! great news I'm must know think about the all thinh
By the way any recommandation for the inside volumes, for the 12PR320 ?
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Old 15th June 2018, 10:30 AM   #14
scholl is offline scholl  United States
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With a qts of .37 you can go as large as Vas. Run the numbers and build larger rather than smaller. You'll get bass typical of a 15 but in a box typical of a 15 too. It'll make a nice two way crossed at 1.2K-1.6K.
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Old 15th June 2018, 01:09 PM   #15
KaffiMann is offline KaffiMann  Norway
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Ref: my first post, it looks really good in 108 liters, but here's a slightly smaller box at 101 liters in 2,83v/2pi:

I do not mind sharing the numbers, but thought you might like to fool around with simulations yourself first.
Note the slow roll off, I have found that I personally prefer this type of frequency response to completely flat to some point, it gives very good group delay and very smooth phase. Sounds like a closed box, but goes deeper.
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File Type: jpg Faital Pro 12PR320.jpg (72.1 KB, 121 views)

Last edited by KaffiMann; 15th June 2018 at 01:13 PM.
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Old 15th June 2018, 02:37 PM   #16
gug42 is offline gug42
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Hello,
Evryone, thank you

@KaffiMann : you are right thx


@scholl : Hum sorry for the dummiers question, what is a "typcial 15" volumes ?

Thank you in advance !
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Old 15th June 2018, 07:45 PM   #17
scholl is offline scholl  United States
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Quote:
Originally Posted by gug42 View Post
Hello,
Evryone, thank you

@KaffiMann : you are right thx


@scholl : Hum sorry for the dummiers question, what is a "typcial 15" volumes ?

Thank you in advance !
15" woofer. If you run the numbers on the 12pr3xx they model like some 15" woofers. Compare them to a JBL 2226h and see what you get.
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Old 15th June 2018, 07:56 PM   #18
gug42 is offline gug42
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Oh well, The doc speak about a 140L boxe !
The frequency response and the sensibility of the JBL seems to be a little better. There price is higher
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