Planar Speaker Asylum

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Planar Speaker Asylum

RE: Replacing capacitors in 2.7 QR

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In Reply to: RE: Replacing capacitors in 2.7 QR posted by scolley on June 10, 2015 at 13:54:09

The ERSE Super Q line of inductors at PE surprised me years ago. At a time when most folks were claiming definitive superiority for the foils, I tried these in a couple of values that I also had in foils. Well, it may be a Maggies thing but even after accounting for their lower ESR, the ERSE Super Q took the crown. (Though not for long...ah, but you don't want to go there :-))

Follow Ups:

RE: Replacing capacitors in 2.7 QR - pictureguy 16:46:21 06/10/15 (3)
Do NOT be tempted by simply low DCR of the coil. You will change the balance of 'power' between sections of the panel.

I have designs for a coil for the MG1.6 which has a DCR within 5% of stock while being made of heavier wire AND is aircore. I use standard PVC pipe as the dimension and winding bobbin for these coils. Stock coil was 0.40ohms and my plan was 0.38ohms and going from 16ga of the Maggie part to 14ga for my design.

For the 3.5mh coil I needed, I planned for about 130feet of wire per.

NONE of the coils commericall available are 'ideal dimension', either. The coil, regardless of outer and inner diameter should have the SAME number of layers as turns per layer. This makes the coil square in cross section and therefore most efficient.
Too much is never enough
- RE: Replacing capacitors in 2.7 QR - JBen 17:26:05 06/10/15 (2)
  LOL, Pix, Scolley won't even go into a line-level xover to avoid complications for now. If you now get him into building his own inductors he'll have so much fun that we may still make a full-fledged tweaker out of him!
  
  Either that or we spook him away forever. : - ))
  - RE: Replacing capacitors in 2.7 QR - scolley 07:30:08 06/14/15 (0)
    Wow! Building my own inductors? I'm not "afraid" of that - per se. I've built my own multicolor, dimable LED lights for my reef tank because what I wanted was not available commercially. Same situation here. But as with the LED, I had to do a LOT of learning to know what I was doing. And I don't feel like doing that now.
    
    With all due respect to pictureguy's suggestion, I suspect replacement inductors may not be "ideal" - as opposed to building the perfect replacement. But they must be "good enough", 'cuz a heck of a lot of people appear to be doing it.
    
    At least now I understand that the 2 dimension numbers includes an inner and outer diameter. :-)
  - RE: Replacing capacitors in 2.7 QR - pictureguy 17:33:12 06/10/15 (0)
    It's not a hobby, it's a career
    Too much is never enough

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