Phase inverted preamps and Rel Subwoofers.


I have come to realize that my preamp is a “phase inverted” preamp.  This basically means that most recordings will sound better when you reverse the positive and negative wires on the back of your speaker terminals.  Since doing this my amp is getting hot.  I have Rel subs hooked to the terminals of the amp the normal way.  Could this cause the heat? Should or (can I) reverse the subs positive and negative positions on the (amp) along with the the speaker wires as well?  In this case the speakers positive and negative would be changed back the traditional way. 
puffbojie
If the speakers are passive and isolated from everything else, there should be no problem in reversing the +lead and -lead going to the speaker(s). As for the Rel sub, connect it in the normal manner and use the Rel's 0/180 phase switch to reverse the phase. The correct position for the phase switch is the one that provides the most bass, which means that the speaker woofer is in phase with the sub driver.
First question that needs asked: did the bass of your main speakers improve when you reversed polarity of the cables?
I have Rel subs hooked to the terminals of the amp the normal way.  Could this cause the heat?

No. 


@helomech 
Yes.  (Overall) I definitely felt their was a noticeable improvement in bass response.