Convert XPA-100 mono blocks into a common ground Amp

[jmasterj]

Hi Keith,

I have a unique situation I've recently acquired a pair of vintage Polk Audio SDA-2 speakers. Because of the way they are designed they need to be connected to a amp that shares a common ground. I have a pair of XPA-100 mono blocks that I would like to use with the SDA-2's. My question is, is there a simple way to make this conversion where I will not cause damage the XPA-100,s. I would really appreciate any assistance.

[jmasterj]

Ok does anybody know the answer to this question or can someone direct me to where I might be able to find it? Once again I would really appreciate any assistance.

[DavidR]

I believe, but not positive, that the common ground is only needed when you run the 'connector wire' from spkr to spkr.