I'm buying the parts to have my SDA-2B Crossovers rebuilt by a friend in the group.
The caps are easy and I believe going with 12u Sonic's for the highs (www.soniccraft.com 20% off in November), and then Dayton's for the lows (20u and 40u www.partsexpress.com) will be OK. Is there a reason to use the much more costly Sonics for the 20 and 40u's ???
I've found the original 2.7 Ohm 10% 5W resistor in a 2.7 ohm 10% 10W "audiophile" version from parts express. Is the wattage increase OK ???
Last, in the image below there are two "white circled" parts (bottom center of the board).
The light blue one (resistor?) shows "MCI 500" and the dark brown/black (polyswitch/thermistor??) shows SAN Mexico 1000 50%).
Can someone educate me as to the proper name and function of the circled components, and as to what their function is? Last, do these circled components need to be replaced?