Monitor 10 series 2 recap

wamo101

Any brand recommendations on caps. Any difference in performance between brands. Any place I can find detailed instructions and tips on how to recap.

Nightfall

Sonicap and ClarityCap are most recommended. I have read good things about Mundorf as well but haven't heard them, nor seen anybody on this board discuss them.

westmassguy

Your Crossovers most likely have a mix of Mylar and Non-polarized Electrolytics, with Sandcast Resistors. You'll want to replace all of them.
You'll want Metalized Polypropylene Caps, and Mills or Mundorf MOX Resistors.
Entry Level, I.E. inexpensive, would be Dayton or Solen MP Caps, and Clarity PX would be a step above. The much better, and expensive Caps would be Sonicap Gen I, or Clarity ESAs.

wamo101

Here are my crossovers for the monitor 10 series 2. According to the schematic they have a 12uf electrolytic, a 27uf electrolytic , and a 16uf mylar. you can see that there are 2 12's and a 27. what is the yellow piece under the 12. I bought these used , so not sure if there has been any work done. Just trying to figure everything out before i start on these.

RandyCroissant

Looks like a sandcast peeking out from under the 12uf electro, that has been overdriven i.e. burned. A somewhat small investment in new film caps and mills wire wound resistors would result in a dramatic improvement.

wamo101

can westmassguy answer this post

westmassguy

The yellow piece, is a Mylar cap. They paralleled a 12uf NP Electrolytic cap with the Mylar to make a 16uf cap. The other 12uf is shunting the 2.7 ohm resister that's underneath it. The Resistors has scorched the circuit board, and probably took out the 12uf on top of it.

wamo101

Can I replace the 12 and the Mylar with a single 16uf poly cap

motorhead43026

wamo101 wrote: »

Can I replace the 12 and the Mylar with a single 16uf poly cap

Yes.

westmassguy

This ^^^^^^^
It's always best practice to use the exact value capacitor if possible. If two or more capacitors are needed to make up the value, it's better to use caps of equal value, or as close as possible, not the way Polk did it. Not only are the values far apart, but they mixed NP Electrolytics, with Mylar.