Originally Posted by _Spanky_
Alright. I've also seen ClarityCaps for about the same price as Dayton. These are actually my best speakers so far (currently using the Best Buy $60-wonder Insignia bookshelf speakers) so I wanna get them fixed up as I'll be using them for quite a while. What about the ratings? The original schematic calls for 7uF and 18uF but I can only find 6.8uF and 20uF for the Daytons and 6.8uF and 18uF for the ClarityCaps. Is that a problem or is it ok?
Yep it's a problem...you need to find exact value (uf and V ratings) replacements...however you can use electrical theory to your advantage when selecting caps....for instance (IIRC) if you wire a cap in series it halves the value of it ( like 2 x 100uf caps in series become 50uf ) Parallel wring for the same 100uf pair would result in 200uf in total but raise the V ratings to double the stated amount (on the cap body). If you cannot source a 7uf cap look for something that adds up to that total (using series or parallel wiring scheme) to arrive at the target values. Remember to match V rating (or go above it which is fine). In your series or parallel wired caps the cap with the lowest voltage rating takes precedence.
What caps are you looking at (besides Dayton and Clarity) ?...I may be able to suggest possible combinations for you to order that will work.
Are you sure the 18uf/7uf caps are non polarized (meaning electrolytic types which have a + and - pole rather than film types which have no polarity) ? If I had to guess I'd be willing to bet that 18uf cap is polarized in which case finding such a value should be very easy.
Could you post the xover schematic for your speakers please or let me know the exact model number of them ?
This combo would work for the 7uf value...clarity cap 4uf 250V + 3 uf 250V = 7uf 250V wired in parallel. The 18uf cap has an exact value replacement in the Clarity line....just double check that that 18uf cap (or even the 7uf one) are actually film caps and not electrolytic types.
Edited by Pricklely Peete - 7/2/11 at 8:47pm