The HR3's that I heard two years ago had JBL 2446's and JBL 2226's. Whoever the crossover/network artisan is deserves a lot of credit there. I think they sound great.
Barry.
I agree with what is being said.
For the new Beyma 12BR70 v2014 (I call it) you can see it's date is 11/2013 pdf
This driver is good for TL/quarter wave types enclosures.
Sealed gives a good behavior, 70/80L or so minimum (~80W), because that driver needs an extra large enclosure in BR ~150L and an extreme 200W rms of power.
In your application the passive network would make a killer... (as was said)
A 100L sealed and 60W amp (woofer only, more for a 3-way speaker) would make things even, to stat with, and a few small inductors (to test) for a first order before making a final crossover. Then you need to reduce the output of the mains and calibrate crossover points.
For the new Beyma 12BR70 v2014 (I call it) you can see it's date is 11/2013 pdf
This driver is good for TL/quarter wave types enclosures.
Sealed gives a good behavior, 70/80L or so minimum (~80W), because that driver needs an extra large enclosure in BR ~150L and an extreme 200W rms of power.
In your application the passive network would make a killer... (as was said)
A 100L sealed and 60W amp (woofer only, more for a 3-way speaker) would make things even, to stat with, and a few small inductors (to test) for a first order before making a final crossover. Then you need to reduce the output of the mains and calibrate crossover points.
Last edited:
I had chosent the beyma for use in a active bi amp system. They beyma is too low efficiency to match correctly with the 97 db audax mid I'm afraid, hence my purchase of the eminenece omega pro 15 which is a 97db driver...
I envy you 🙂
Omega PRO15A in 150 L tuned to 42Hz should yield F3=41Hz. 2 ports R=100mm, L=110mm (give or take a cm - it always needs a little additional tuning). Audax has very little Xmax so xover point should be at arround 400Hz-500Hz but not less than that. You will probably have to attenuate it regardless of bass sensitivity that looks high enough. Sensitivity is always little lower at low frequencies.
In small rooms i never go under F3=40Hz because bass starts to sound really bad and boomy. You should be Ok with this but if you like it really low you should add a subwoofer/s.
Last edited:
hi
my plan was to go with a 220L bass enclosure 🙂 but yeah, I will not do the speaker finally.
So you dont like your mains going to low, while subwoofer dont make the sound boomy? the decapo is a f3:42hz I think...
I will get the decapo be, but I will use the omega to build massive subwoofer. Likely the two 15's in a 300 L. should be good.
my plan was to go with a 220L bass enclosure 🙂 but yeah, I will not do the speaker finally.
So you dont like your mains going to low, while subwoofer dont make the sound boomy? the decapo is a f3:42hz I think...
I will get the decapo be, but I will use the omega to build massive subwoofer. Likely the two 15's in a 300 L. should be good.
Off topic:
It can sound boomy in small rooms if one does not have resources for multiple subwoofers to mitigate the room modes problem. -3dB at arround 40Hz and -10dB at arround 30Hz from my mains is satisfying for me because there is enough bass but not too much. Below 30 Hz there is very little music material so that doesn't bother me.
But that is just my preference. Doesn't mean you will like it. If you like lower bass go for it but it must be done right. Position of bass reflex, inner damping, tuning frequency and BR surface along with few other things must be calculated right or one might end up with poor results that adds to bad reputation of vented loudspeakers. That is why i suggested to you closed boxes with new Beyma cause it's pretty straightforward job. You wouldn't even have to drill a bigger hole for the 12BR70. But then again i know how much i was happy going from 12" to 15" so i can't tell you not to try the Eminence OmegaPro15A 🙂
It can sound boomy in small rooms if one does not have resources for multiple subwoofers to mitigate the room modes problem. -3dB at arround 40Hz and -10dB at arround 30Hz from my mains is satisfying for me because there is enough bass but not too much. Below 30 Hz there is very little music material so that doesn't bother me.
But that is just my preference. Doesn't mean you will like it. If you like lower bass go for it but it must be done right. Position of bass reflex, inner damping, tuning frequency and BR surface along with few other things must be calculated right or one might end up with poor results that adds to bad reputation of vented loudspeakers. That is why i suggested to you closed boxes with new Beyma cause it's pretty straightforward job. You wouldn't even have to drill a bigger hole for the 12BR70. But then again i know how much i was happy going from 12" to 15" so i can't tell you not to try the Eminence OmegaPro15A 🙂
Last edited:
A roll off like that is going to meet room gain rather nicely though for a relatively flat in room response.
- Status
- Not open for further replies.