I used a DMM to get the 2.5 ohms. I know it is not the proper device but it all I have.
Then you might as well not have bothered because DC resistance means nothing. You need an impedance meter.
That aside, what makes you think those leaking caps have anything to do with a speaker or line problem?
Is the amp old? Is the ambient where its located hot? Do you know how to simply replace them? You don't need a new amp or board. If it trips the breaker they are power supply filter caps.
-Hal