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Upgrading crossover?

Has anyone done an upgrade to factory speaker crossover with better quality components and got good results?
I had opportunity to look at the crossover while upgrading friend’s PMC FB1 to + version, and I noticed that components were not of a high quality, inductors with ferrite core, electrolytic caps, resistors of 5%.
What are your thoughts of replacing these elements with better quality ones of the same value, inductors with air core (for example Alpha core Ribbon inductors), Solen caps, etc?
sashav
hgery
1 posts
 

Hy Darco!

Can you please send me what pmc let you know about the modification? And since then have you find out something about the foam questation?

 

Thanks a lot 

Greg

gergelyhulin@gmail.com

mijostyn's avatar
mijostyn
8,518 posts
 

Go for it, keep the tolerances as tight as you can find, 1%. This way the speakers might match better giving you a better image.

erik_squires
16,017 posts
 

ESR and DCR matter, a lot.

I suggest you buy a Dayton DATS so you can accurately measure these in components before replacing them.  Reducing either significantly will negatively impact sound quality.  Of course it will sound different, because you just altered the fundamental crossover.

If you want to do this correctly, and there are reasons to, measure the ESR and DCR of the caps and coils, respectively, as you go along.

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