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Multi-Way Conventional loudspeakers with crossovers

Proac crossover
Proac crossover
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Old 9th September 2019, 05:19 PM   #11
Hylle is offline Hylle  Denmark
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miguelnoda, I have one of the 16ohm SM75 ATC domes. Actually the one that my friend Troels Gravesen measured hear : ATC-SM75-150

I cant use one, and It is difficult to get another, so if you would like It for you Proacīs, I am sure we could find a fair price for us both.
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Old 9th September 2019, 08:09 PM   #12
miguelnoda is offline miguelnoda  Spain
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how many units do you have
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Old 9th September 2019, 08:15 PM   #13
miguelnoda is offline miguelnoda  Spain
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Default crossover proac ebs

Would the 47uf capacitor have to be exchanged for one of 50uf and the inductor of o.56mh for o.65mh and the one for 0.68mh for 0.45mh and the capacitor of 15uf for 4.5uf?
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Old 9th September 2019, 11:02 PM   #14
Galu is offline Galu  Scotland
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Quote:
Originally Posted by miguelnoda View Post
Would the 47uf capacitor have to be exchanged for one of 50uf and the inductor of o.56mh for o.65mh and the one for 0.68mh for 0.45mh and the capacitor of 15uf for 4.5uf?
If you wish to follow Datsun's suggestion, then this is correct.

However, it will make a negligible difference if you use the following standard values of capacitor:

For 50 uF, you may use the standard value of 47uF.
For 4.5uF, you may use the standard value of 4.7uF.
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Old 10th September 2019, 06:21 AM   #15
Hylle is offline Hylle  Denmark
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miguelnoda, I have only one (1) driver. I understood you have only one failed driver, so this one would would make the speakers go back to how they were designed to be.
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Old 11th September 2019, 08:12 PM   #16
miguelnoda is offline miguelnoda  Spain
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Default crossover proac ebs

Hi, could you put the values on the circuit because I don't understand it well?

Click the image to open in full size.closest tcf atm machine
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Old 11th September 2019, 09:27 PM   #17
Galu is offline Galu  Scotland
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Reading from left to right:

6.8Ω; 47uF; 0.65mH; 0.45mH; 4.5uF

(You may have to experiment with the value of the resistor e.g. 3.3Ω.)
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Old 11th September 2019, 09:46 PM   #18
miguelnoda is offline miguelnoda  Spain
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The 4.7uf capacitor is lower in value than the original 9uf circuit and the modified 15uf
Will it sound very sharp?
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Old 11th September 2019, 10:19 PM   #19
Galu is offline Galu  Scotland
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The new component values are chosen so that the 8 ohm midrange operates over the same range of midband frequencies as the original 16 ohm midrange.

All the components work together to produce the result you requested. The 4.7uF does not work in isolation, so will not introduce sharpness.
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Old 12th September 2019, 06:17 PM   #20
miguelnoda is offline miguelnoda  Spain
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how about this other scheme
Click the image to open in full size.
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