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Old 3rd October 2011, 10:10 PM   #1
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Default EL70: Ideal Bandpass Filter?

If you were going to design a bandpass specifically to get the best possible sound from the EL70, where would you set the low-pass and high-pass filters?

Or, perhaps just a high-pass filter to cut out the uber-lows and leave the highs alone...

You don't have to explain why, but I am always interested in learning more so if there are hints in the Small/Theile parameters or response graphs that indicate an ideal bandpass, I'd love it if you could explain...
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Old 5th October 2011, 03:20 PM   #2
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Well, since the EL70s are sounding so damned good in my new microTowers (after some burn-in), I've abandoned this idea. It doesn't seem necessary.
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Old 5th October 2011, 04:06 PM   #3
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May want to search for username "motosapien" posts on using a 68uF capacitor across one EL70. Apparently really opened up his Conisten^2 build.
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Old 5th October 2011, 05:03 PM   #4
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Quote:
Originally Posted by rvsixer View Post
May want to search for username "motosapien" posts on using a 68uF capacitor across one EL70. Apparently really opened up his Conisten^2 build.
Thanks for the advice.

I've searched and read the posts and I am not sure if this is something I would trust myself doing. I chose a full-range project specifically to keep the wiring simple and keep as much "electronics" and soldering out of the picture as possible.

Also, it seems that the point of that capacitor is to roll off the highs on one of the drivers. I can see this being advantageous on a side-mounted driver, but I'm not sure I want to roll off the highs on either of my drivers. I don't know enough about acoustics to know what this would do to my listening experience.

Also, I am toying with the idea of mounting a spherical wooden deflector centred just above the top driver to turn it into an omnidirectional driver. I have tested this for an evening on one speaker and I could certainly hear the difference from that side of the room, which resulted in crisp, detailed highs (and it looked really cool, too). Rolling off the highs would be couter-productive if I decide to go this route...
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