Refurbishing the crossovers in a pair of Polk 7As

Tassie Devil

New here - first post

I see the parts for these speakers are:

8uF capacitor
12uF capacitor
27uF capacitor
2.7 ohm resistor
.22mH inductor
1.75mH inductor

I see one e-bay source* replaces the two inductors but only two of the three caps & not the resistor but a comment in one post on this Polk forum suggests this replacement kit is not good value and does not use the best parts. It is a little confusing about what best to do.

* http://www.ebay.com/itm/Polk-Audio-Monitor-5-5A-5B-7-7A-7B-7C-and-RTA-8T-Upgrade-Kit-/171227682189?pt=Speakers_Subwoofers&hash=item27ddf7158d

Can anyone advise on what parts should be replaced, particularly the replacement caps. I see in a post Dayton Audio metallised caps are recommended by one poster so could you please be kind enough to tell me (or point me to a posts about) specific details of specs for the 3 caps (or even if all 3 should be replaced), whether to replace the inductors or not or maybe even the resistor, and where I might buy them. I live in Tasmania, Australia but purchasing from any company which mails items should not be a problem.


Your advice would be greatly appreciated

TIA

John (A retired 78 year old who has been messing around with a soldering iron & A/V toys for decades!)

westmassguy

Hi Devil, and welcome to CP. You'll want to replace the Capacitors and Resistors. Leave the Inductors. you say they're 7As. The schematics for the 7As do not include an 8uf cap. The 7As have Peerless tweeters, and fuses on the binding post cups.

StantonZ

I see westmassguy filled you in on the components; a good place to BUY those parts is Sonic Craft @ http://www.soniccraft.com/products.htm

Don't know about International shipping, but I was VERY impressed with their product (and packing). I used SoniCap (film) caps and Mills resistors for my XO rebuild last year.