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Old 18th March 2018, 11:08 PM   #41
TNT is offline TNT  Sweden
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Thumps up on all accounts

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More distortion to the people!
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Old 19th March 2018, 05:48 AM   #42
solhaga is offline solhaga  Sweden
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Quote:
Originally Posted by WrineX View Post
Hej Solhaga you still use the 3m material ? or what did you use as membrane?
Yes, it is the 3M 74 film. But for the tweeter I am using a 60 mm wide tape.
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Old 19th March 2018, 10:16 AM   #43
WrineX is offline WrineX  Netherlands
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Quote:
Originally Posted by solhaga View Post
Yes, it is the 3M 74 film. But for the tweeter I am using a 60 mm wide tape.
thx i forgot the type and i know the original thread we where talking amts was pretty big haha
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Old 20th March 2018, 05:10 PM   #44
solhaga is offline solhaga  Sweden
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I don't know why, but the 3rd harmonic box was not checked in the measurements above.

I have updated the pictures above, but you'll probably see the old ones due to web browser caching.

So here there are again.

At 25 cm:

Click the image to open in full size.

At 50 cm:

Click the image to open in full size.

At 100 cm.

Click the image to open in full size.

3rd harmonic in the noise floor!
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Old 20th March 2018, 05:35 PM   #45
WrineX is offline WrineX  Netherlands
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what mic is used ?
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Old 20th March 2018, 06:38 PM   #46
solhaga is offline solhaga  Sweden
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UMIK-1
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Old 20th March 2018, 10:17 PM   #47
WrineX is offline WrineX  Netherlands
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ah ok it looks really nice ! very smooth to !. i asked what kind of mic since the umik-1 has a bit higher noise floor then some others. witch could explain the 3rd harmonic going under in
the noise still really nice though! you can set rew to Percentage distortion, it gives and easier way of reading the distortion (at least i think so) you can change it in the settings logo on the right top corner. you probable already knew but ok.
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Old 20th March 2018, 10:23 PM   #48
solhaga is offline solhaga  Sweden
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I prefer dB relative.
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Old 27th March 2018, 03:09 PM   #49
solhaga is offline solhaga  Sweden
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The mid membrane is a little bit larger, so a larger folding tool is required:

Click the image to open in full size.

Out of the oven:

Click the image to open in full size.

3D printed ends makes the mounting a lot easier:


Click the image to open in full size.

I will have two of a thinner variant of the ends as support in the middle.
The distortion levels will go down and the folds will be more even.

I will probably fix the sides of the membrane towards the magnets with silicone.
But I haven't decided yet, first I must find out how it measure...
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Old 27th March 2018, 04:30 PM   #50
WrineX is offline WrineX  Netherlands
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nice ! that foild really makes it allot more easy to hold form ! with mylar it is rather hard
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