Hello, can anyone help me .
I have a PROAC EBS and I have replaced the ATC SM75-150 medium with an 8 ohm medium.
I have done some Wilmslow Audio crossover but the result is worse than leaving it original.
I just want to modify this part of the crossover the ATC SM75-150 that comes from 16 ohm and put the new 8 ohm.
I include the original diagram.
I have a PROAC EBS and I have replaced the ATC SM75-150 medium with an 8 ohm medium.
I have done some Wilmslow Audio crossover but the result is worse than leaving it original.
I just want to modify this part of the crossover the ATC SM75-150 that comes from 16 ohm and put the new 8 ohm.
I include the original diagram.
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To be clear, have you replaced the ATC SM75-150 with the ATC SM75-15008? (The 08 indicates the 8 ohm version.)
The 16ohm media broke down and I bought two 8ohm and I want to adapt them to the original Crossover
You mean the 16 ohm mid (or midrange).
Which make and model of 8 ohm replacements did you buy?
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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 Proac´s, I am sure we could find a fair price for us both.
I cant use one, and It is difficult to get another, so if you would like It for you Proac´s, I am sure we could find a fair price for us both.
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?
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.
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.
crossover proac ebs
Hi, could you put the values on the circuit because I don't understand it well?
Hi, could you put the values on the circuit because I don't understand it well?
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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.)
6.8Ω; 47uF; 0.65mH; 0.45mH; 4.5uF
(You may have to experiment with the value of the resistor e.g. 3.3Ω.)
The 4.7uf capacitor is lower in value than the original 9uf circuit and the modified 15uf
Will it sound very sharp?
Will it sound very sharp?
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.
All the components work together to produce the result you requested. The 4.7uF does not work in isolation, so will not introduce sharpness.
