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Multi-Way Conventional loudspeakers with crossovers

TB new line of Coax FR drivers
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Old 17th January 2019, 02:51 AM   #191
perceval is offline perceval  Taiwan
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Compared to my XO at this point and time.

The impulse is cleaned up, the square wave output much better defined, and the phase between 100Hz to 6kHz is flatter.

I still need to see if I can clean up the step response and bring the tweeter and woofer together, without adding complex networks like the one Freddi posted, if possible!
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Old 17th January 2019, 02:55 AM   #192
454Casull is offline 454Casull  Canada
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Originally Posted by perceval View Post
Compared to my XO at this point and time.

The impulse is cleaned up, the square wave output much better defined, and the phase between 100Hz to 6kHz is flatter.

I still need to see if I can clean up the step response and bring the tweeter and woofer together, without adding complex networks like the one Freddi posted, if possible!
Very nice!
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Old 17th January 2019, 05:17 AM   #193
ttan98 is online now ttan98  Australia
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Originally Posted by perceval View Post
This is the latest XO I have the W6-2313 playing now.
Thanks for sharing, what size of box did you use and the -3db roll off at the lower end?
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Old 17th January 2019, 05:37 AM   #194
perceval is offline perceval  Taiwan
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no problem!

My enclosures are roughly 12 litres., and f3 is at 45Hz, but that's is my room. I can't measure outside... it's a bit too noisy around here.

My simulation did say 12 litres and F3 at 46Hz, with port tuned at 45Hz... so I guess that's pretty good.
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Old 17th January 2019, 06:44 PM   #195
workingman1893 is offline workingman1893
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i wonder if these would work in the Frugal Horn XL?
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Old 20th January 2019, 05:32 AM   #196
murat is offline murat  United States
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Originally Posted by perceval View Post
Compared to my XO at this point and time.

The impulse is cleaned up, the square wave output much better defined, and the phase between 100Hz to 6kHz is flatter.

I still need to see if I can clean up the step response and bring the tweeter and woofer together, without adding complex networks like the one Freddi posted, if possible!
This may sound a bit too much obsession about first order filters. I know... But, there is one more thing I would try in an effort to bring the tweeter and woofer together: SERIES first order filter (in the attached pic).

In a conventional parallel filter both drivers "see some voltage" and then they do whatever they want as dictated by their impedance and phase response. In the series filter, however, you are pushing the same current through both drivers over a rather wide range of frequencies, thanks to the shallow 6 db filter. Chances that you will get a much better phase coherence. This worked very well in my FAST experiments while integrating a mid-tweet to a woofer.

If you wish to give it a try... First, I would start with a fixed, smallish inductor (like 0.15 mH) and play with a large range of caps. Remember, in this circuit, the parallel inductor protects the tweeter quite well around its resonance. You only need to make sure that the overall impedance does not drop too much when you try a largish cap. Again, I would surely try non-inverted tweeter in the fist place.
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Old 20th January 2019, 11:08 AM   #197
Scott L is offline Scott L  United States
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Originally Posted by murat View Post
This may sound a bit too much obsession about first order filters. I know... But, there is one more thing I would try in an effort to bring the tweeter and woofer together: SERIES first order filter (in the attached pic).

In a conventional parallel filter both drivers "see some voltage" and then they do whatever they want as dictated by their impedance and phase response. In the series filter, however, you are pushing the same current through both drivers over a rather wide range of frequencies, thanks to the shallow 6 db filter. Chances that you will get a much better phase coherence. This worked very well in my FAST experiments while integrating a mid-tweet to a woofer.

If you wish to give it a try... First, I would start with a fixed, smallish inductor (like 0.15 mH) and play with a large range of caps. Remember, in this circuit, the parallel inductor protects the tweeter quite well around its resonance. You only need to make sure that the overall impedance does not drop too much when you try a largish cap. Again, I would surely try non-inverted tweeter in the fist place.
Murat, did you get yourself a pair of these drivers ? (w6-2313)
Mark wants to know. Thanks !
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Old 20th January 2019, 11:26 AM   #198
murat is offline murat  United States
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Nope... but I am deeply curious about them. For a year or so I will not be able to play with audio. Say Hi to Mark!!!
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Old 22nd January 2019, 09:46 AM   #199
perceval is offline perceval  Taiwan
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Quote:
Originally Posted by murat View Post
This may sound a bit too much obsession about first order filters. I know... But, there is one more thing I would try in an effort to bring the tweeter and woofer together: SERIES first order filter (in the attached pic).

In a conventional parallel filter both drivers "see some voltage" and then they do whatever they want as dictated by their impedance and phase response. In the series filter, however, you are pushing the same current through both drivers over a rather wide range of frequencies, thanks to the shallow 6 db filter. Chances that you will get a much better phase coherence. This worked very well in my FAST experiments while integrating a mid-tweet to a woofer.

If you wish to give it a try... First, I would start with a fixed, smallish inductor (like 0.15 mH) and play with a large range of caps. Remember, in this circuit, the parallel inductor protects the tweeter quite well around its resonance. You only need to make sure that the overall impedance does not drop too much when you try a largish cap. Again, I would surely try non-inverted tweeter in the fist place.
Been on vacation for a few days.

I'll see what I can do.
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Old 22nd January 2019, 10:12 AM   #200
perceval is offline perceval  Taiwan
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This is what happens when trying this...
Wild ride on the Impulse Response.
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