Caps for threshold sl-10

I am planning to change caps on my threshold sl-10.
How do you determine polarity of "Instrument Devices" caps? There is no polarity sign.

drdelta10-14-2013 5:40am

drdelta OP Details Discussions Posts This discussion Message User 1 posts 12-01-2013 at 06:38am Copy Comment URL Report Comment Edit Delete I finally reconstructed the power supply and replaced the caps with Elna Silmic II as most of you suggested, including Nelson. My! What a difference new caps made...natural timber, improved dynamics, well defined bass, airy highs....My system literally sings!?! Thank you.