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Magnepan Full-range ribbon and planar speakers

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  #11  
Old 02-05-2017, 06:02 AM
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So I ran new wire and eliminated the aluminum connectors.Soldered terminals,I am not sure about eliminating the resistor blocks.I have a list of the crossover components.I should finish the right speaker tomorrow,I plan on comparing the the upgraded speaker with the stock one. If it is better then the next step will be a crossover upgrade. I have pictures to post ,probably tomorrow and a list of the crossover components.
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  #12  
Old 02-06-2017, 09:49 PM
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Originally Posted by vegaracer1 View Post
Thanks for the info Mike. Do you use the resistor's since the upgrade.I am considering eliminating them.
No I don't use the resistors. I have Shunyata copper jumpers that I am using. I still have the stock fuses too. I didn't think I could hear a change with the high end fuses so have not tried them.

~Mike
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  #13  
Old 02-07-2017, 02:26 AM
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Default pictures,before

Here are a few pictures of the crossovers and a few others.
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File Type: jpg IMG_0077.jpg (88.1 KB, 103 views)
File Type: jpg IMG_0078.jpg (92.0 KB, 103 views)
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  #14  
Old 02-07-2017, 02:29 AM
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No I don't use the resistors. I have Shunyata copper jumpers that I am using. I still have the stock fuses too. I didn't think I could hear a change with the high end fuses so have not tried them.

~Mike
Thanks Mike, I have not been using the resisters either and I have the Mapleshade copper jumpers. Stock fuses too.
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  #15  
Old 02-07-2017, 10:46 AM
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Originally Posted by vegaracer1 View Post
So I ran new wire and eliminated the aluminum connectors.Soldered terminals,I am not sure about eliminating the resistor blocks.I have a list of the crossover components.I should finish the right speaker tomorrow,I plan on comparing the the upgraded speaker with the stock one. If it is better then the next step will be a crossover upgrade. I have pictures to post ,probably tomorrow and a list of the crossover components.
Could you ahould show some photos of how you you removed the fabric sock?
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  #16  
Old 02-07-2017, 01:52 PM
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I will take pictures of sock removal when I modify the second speaker. The first ones did not have enough light.
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  #17  
Old 02-12-2017, 09:36 PM
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Default New pics.etc.

So last week I had tried to scull up the wood trim on my 3.7 panel. Total fail.The panel must have been urethane coated.Today I stripped the wood with no voc stripper and Urethaned the new binding post panel that I made. Here are a few more pictures. I will be messing with the crossovers,I may reach out for some advice from fellow AA. I thought I would just copy what I had only better Caps,but some of the values are odd.I may not be able to find them in better parts. I have a lot to learn in this department.
Attached Images
File Type: jpg IMG_0081.jpg (90.3 KB, 105 views)
File Type: jpg IMG_0071.jpg (89.0 KB, 110 views)
File Type: jpg IMG_0086.jpg (87.8 KB, 102 views)
File Type: jpg IMG_0088.jpg (87.7 KB, 101 views)
File Type: jpg IMG_0089.jpg (86.4 KB, 101 views)
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  #18  
Old 02-13-2017, 04:15 AM
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Default Mags 3.7 Upgrade

Quote:
Originally Posted by vegaracer1 View Post
So last week I had tried to scull up the wood trim on my 3.7 panel. Total fail.The panel must have been urethane coated.Today I stripped the wood with no voc stripper and Urethaned the new binding post panel that I made. Here are a few more pictures. I will be messing with the crossovers,I may reach out for some advice from fellow AA. I thought I would just copy what I had only better Caps,but some of the values are odd.I may not be able to find them in better parts. I have a lot to learn in this department.


You may have to replace single caps with 2 in series or parallel to get the values the same.
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Old 02-13-2017, 01:29 PM
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The odd value is the 24. Uf 5℅ Lots of 22uf around and 25,26.
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  #20  
Old 02-13-2017, 11:01 PM
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Default Mags 3.7 Upgrade

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The odd value is the 24. Uf 5℅ Lots of 22uf around and 25,26.


With 5% tolerance, 22uF gives you +\- 1.1uF so 20.9 to 23.1uF

25uF gives you +\- 1.25uF so 23.75 to 26.25uF

If the original 24uF is also 5%, then the range is 22.8 to 25.2uF

I think 25uF is close enough, but if you want to be dead on, then Google will give you formulae for calculating the values of 2 or more in series or parallel. My problem in the past has been replacing values such as 80uF...
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Last edited by John49; 02-13-2017 at 11:06 PM.
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