Monitor 12s in smaller room

westmassguy

fullvolume wrote: »

I just priced out the cost of rebuilding two crossovers with Sonicaps and a Mills Resistor, plus a new Polyswitch, including shipping, and I'm looking at over $160.
Does this sound right?
I figured on a one for one replacement to get exact values as per the schematic, thus two caps to achieve the 16.4uF rating for the one cap. Am I right that the big yellow 12J100 cap will get replaced with a 12uF Sonicap Gen1 200v?
In other words, I need three of the same 12uF caps for each xover, plus the 4.4 and 4.2uF caps?

I'm looking at over $300 in caps alone just to rebuild four cross overs, (two M12's, and two 5jr's). I could save some money using a single cap to replace the two that make up the 16.4uF stack.

Sonicap will custom match 16.4ufs, call them. Buying two 8.2ufs instead, and stacking them may give you more room, because you've got small circuit boards, and some big caps to try and fit on them. A 12uf and 4.4uf would not be good practice. When combining caps to make up an odd value, try to keep an equal split, or close to it.

fullvolume

I called and got a real price today, to do both xovers with Sonicaps I'm looking at over $225 for the caps, 2 resistors, and two new poly switches from another source.
That's a bit steep for what may only turn out to be a minor sound improvement. I did pull each of the old caps out of circuit to test and none of the old caps test out of spec.
I don't doubt that they would be better off with the Sonicaps but I have a hard time believing they will be improved enough to justify spending $225 or more and a few hours time on them?
I'm not convinced the problem here is with the speakers.
These sounded great just a few months ago, and sounded fine when I powered them up on an old receiver in the storage garage.
Its not just the Polk speakers that sound off here, but I'm most familiar with the sound I'm used to getting from the M12's and M5jr's.

F1nut

It's not a minor improvement. Read through threads/posts of others who have upgraded their crossovers. Again, the sound you heard in the storage garage wasn't how those speakers really sound.