Adding a super tweeter to a full range - Page 11 - diyAudio
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Multi-Way Conventional loudspeakers with crossovers

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Old 15th January 2013, 08:44 PM   #101
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It's crazy how much difference they make. If I am listening to some music and then disconnect the full range driver, the actual sound coming from just the tweeter doesn't sound much at all, but by removing the tweeter and leaving just the full range driver seems to remove so much more.
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Old 15th January 2013, 08:51 PM   #102
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A couple db can be all it takes. The treble knob has proven that to me quite a few times
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Old 16th January 2013, 12:49 PM   #103
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OK. Here they are.....

The crossover:
Click the image to open in full size.

The crossover had to be able to fit inside the enclosure, it was a tight fit!
Click the image to open in full size.

Finished tweeters with custom made cables:
Click the image to open in full size.

I'm very pleased with the finish and the sound
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Old 16th January 2013, 03:02 PM   #104
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Very nice! This thread will be a great reference for anyone wishing to add sparkle/air to their EL70s. If you could add an explicit summary of the crossover, perhaps with a schematic...?
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Old 16th January 2013, 05:32 PM   #105
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Good idea cogitech.

Here is my crossover design for the Dayton ND20FA-6 tweeters when being used with the CSS EL70 full range drivers:

Click the image to open in full size.

This gives a second order crossover at around 18600Hz with 12dB of attenuation per octave. The resistors attenuate the tweeter by 6dB.

I feel this works very well with the EL70's at giving that little extra sparkle.

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Old 16th January 2013, 05:41 PM   #106
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Wish I had a 0.07mH on hand. I've got the tweeter and everything else. I could try it out. I'm satisfied with the treble on mine, but it's fun to experiment. I do have some 0.15mH I could parallel just for trying out. I could then take measurements to, to see the difference.
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Old 16th January 2013, 05:55 PM   #107
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Give it a try and see what you think
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Old 16th January 2013, 06:34 PM   #108
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Quote:
Originally Posted by portreathbeach View Post
Good idea cogitech.

Here is my crossover design for the Dayton ND20FA-6 tweeters when being used with the CSS EL70 full range drivers:

Click the image to open in full size.

This gives a second order crossover at around 18600Hz with 12dB of attenuation per octave. The resistors attenuate the tweeter by 6dB.

I feel this works very well with the EL70's at giving that little extra sparkle.

Awesome!

Just to be clear; You have a single EL70 (4ohm) in each speaker and you are running the tweeter parallel by securing the connectors on the speaker binding posts?
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Old 16th January 2013, 06:46 PM   #109
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Yeah, I'm using a single 4ohm EL70 in each cabinet and the tweeter is wired to the binding post.
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Old 24th May 2013, 03:17 AM   #110
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Default Favorite Hi Tweeter Crossover

Here's an example of my favorite crossover to use on a high tweeter or additional tweeter. It keeps the harshness of voices out of the tweeter, but also raises the end of the response curve some, where the tweeter starts to roll off.

I used this crossover to add some 2 inch 8-ohm tweeters to a pair of speakers each with a pair of 2 inch HiVi A2S Fullrange Aluminum cone drivers in them. Each HiVi A2S Fullrange was 8 ohms, so 4 ohms total with parallel per speaker. I added the 8 ohm tweeter only to help where the A2S rolls off at 15khz, and also since the HiVi speakers are low efficiency, the louder tweeter being crossed so high in frequency made them blend right in without being too quiet to hear them, but not too loud to drown out the speakers either. They were VERY transparent, it made the Full Rangers seem to appear to be producing the upper highs, when it's really the tweeters.
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