Hello. I Thought in a project at the begining of this year with SB Acoustic drivers. I wanted a 3 way floorstander with the following config:
Tweeter: SB29SDAC-C000-4
Midrange: SATORI MW16P-8
Woofer: SATORI WO24P-8
I thought in a active system although I have changed my mind and would go for passive... or selling the drivers because I do not have much time not space for this nice project.
Does any one of you has any suitable crossover suggestion for this config?
Thank you
Tweeter: SB29SDAC-C000-4
Midrange: SATORI MW16P-8
Woofer: SATORI WO24P-8
I thought in a active system although I have changed my mind and would go for passive... or selling the drivers because I do not have much time not space for this nice project.
Does any one of you has any suitable crossover suggestion for this config?
Thank you
SBA-941
Full Satori 3-way: WO24P-8, MR16P-4, TW29RN - projekt by Piotr F. & pawel_luk1
site is in Polish, but you do not neet it for electrical schematic and cabinet construction lol
btw did you found any other 3-way projects with Satori? If yes I would be more than happy if you could share them, paid or free, preferable with smaller woofer like 22 or 20 cm
Full Satori 3-way: WO24P-8, MR16P-4, TW29RN - projekt by Piotr F. & pawel_luk1
site is in Polish, but you do not neet it for electrical schematic and cabinet construction lol
btw did you found any other 3-way projects with Satori? If yes I would be more than happy if you could share them, paid or free, preferable with smaller woofer like 22 or 20 cm
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the MR midrange will sound better than the MW mid-woofer but only if you cross it over higher. I have both; even with a 2nd order HP at 200 Hz; the MR has too much distortion compared to the MW. If you do a 2nd order HP on the MR at 300 to 400 Hz; it will have a very musical quality that is hard to beat.
Hello again.
Life is moving and this is an "insane" hobby.
I have recovered the stuff I had sold and I'm back again with this project.
I have made this first simulation, but it looks impedace is very high from 500Hz (woofer/mid crossover point).
Box will be very similar to Troels Gravesen SBA 941 design.
600 H x 310 W x 350 D
Roughly 45 liters for woofer.
What do you think about?
Attached you will find the Xsim file to play with
Life is moving and this is an "insane" hobby.
I have recovered the stuff I had sold and I'm back again with this project.
I have made this first simulation, but it looks impedace is very high from 500Hz (woofer/mid crossover point).
Box will be very similar to Troels Gravesen SBA 941 design.
600 H x 310 W x 350 D
Roughly 45 liters for woofer.
What do you think about?
Attached you will find the Xsim file to play with
Attachments
High impedance is usually no problem. That high impedance is particularly caused by the 6.8 Ohm series resistor in series with the mid. Do you really need that much attenuation for the mid? I bet, that R5 can easily heats up when volume is cranked.
Correct.
But if you want it to look nice :
Try RC with 24R and 22 uF, or RCL with 22R, 18 uF and 0,39 mH respectivelly.
Both (either one) will nicely smooth the impedance from abt 500 Hz to a flattish 8 Ohm.
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Thanks AllenB, sorry used to seeing the phase plot for each driver overlaid in Vituix so you can see if they align at the crossover points and ideally for at least one octave each side rather than the combined system phase.
Point taken Ugg. There were a couple of other clues that suggested to me that our raelman was on his game in this case. 😉
Raelman - Response looks good. Nice simulation.
Since you are crossing the 160 mm driver at about 3.8 kHz, I suspect you will be getting some beaming in that region. That driver will be dispersing widely up to about 2k, then it will start to narrow. Then at 3.8 k the 29 mm dome takes over and the dispersion will be very wide again.
Have you tried any simulations where the crossover from MW16 to SB29 is a bit lower? Like 2.5 k? I suspect a lower crossover will have a more smoother off-axis response (horizontal off-axis response).
Since you are crossing the 160 mm driver at about 3.8 kHz, I suspect you will be getting some beaming in that region. That driver will be dispersing widely up to about 2k, then it will start to narrow. Then at 3.8 k the 29 mm dome takes over and the dispersion will be very wide again.
Have you tried any simulations where the crossover from MW16 to SB29 is a bit lower? Like 2.5 k? I suspect a lower crossover will have a more smoother off-axis response (horizontal off-axis response).
Thanks to all for your help and tips.
Hifijim, I’m going to try a lower crossover point too.
I’m in the preliminary stage doing simulations and will order parts to try.
Let’s see if I can find a lower crossover point.
The fact is that I’m in doubt I’d stick to the sb29sdac or try the satori tweeter.
Again: any help or tip will be very welcome.
Hifijim, I’m going to try a lower crossover point too.
I’m in the preliminary stage doing simulations and will order parts to try.
Let’s see if I can find a lower crossover point.
The fact is that I’m in doubt I’d stick to the sb29sdac or try the satori tweeter.
Again: any help or tip will be very welcome.
I discovered this when I started to adjust the tweeter filter, and the response changes were very different than what I expected.
I have never used the SB29SDAC-C000-4 Tweeter, but the datasheet SPL shows a big bump between 10-20kHz. The SB29RDC-C000-4 has a flatter SPL, and is used in several praised designs.
The why to use the SB29SDAC is because... I already had it and wanted to give it a try.
It's true that the tweeter ZMA file was wrong. I have extracted ZMA from specs and it looks different but still not close to specs.
in this situation, I cannot cross it lower than 3,2KHz
It's true that the tweeter ZMA file was wrong. I have extracted ZMA from specs and it looks different but still not close to specs.
in this situation, I cannot cross it lower than 3,2KHz
I traced it again. It is different but it is still difficult to work with. Maybe you could try a notch filter instead of the parallel resistor (you can still use a parallel resistor as part of an L-pad if you want the impedance to stay lower).
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