Sonab film cap replacement

[kohngallery]

I'm still a little fuzzy (not uncommon for me) about capacitors and replacements. I want to replace a film cap from a Sonab OA-12 and the original says "5.6/10% 100v." Would like to use a WIMA cap as I have heard great things about them, and for $4.00 I'll splurge. But the closest value I can find is "6.8 uf/100 vdc/10%." What would happen if I use a greater value? And are film caps interchangeable with nichion electrolytic caps?

 

[stickman]

A higher uf value capacitor lowers the cross-over frequency. The Peerless cone tweeters used in the Sonab OA series speakers have good compliance and can safely play lower treble frequencies than some tweeters, so use of 6.8 uf cap in place of a 5.6 would likely not present any physical risk to the tweeters and would have a minor impact on perceived sound quality. On piano notes there may be a tendency for more harshness in the sound output with the higher value capacitor.

Any non-polarized capacitors of similar ratings are interchangeable in speaker cross-overs but can have noticeable effects on sound quality based upon the quality of construction and materials used (and how close they actually perform to their rated specifications).