I recently started acquiring some separate amps to use with my integrated receiver.
Ive got a Sony STR-DA5400ES and i'm using the pre-outs to send signals to my carver amps. Currently i have a TFM-55 for mains and TFM-35 for center hooked up. The Sony is only powering the surround speakers (1 pair)
My concern is that the Sony still gets quite hot while in use, and it since it's only driving the surround channels it seems to me that it shouldn't get so warm.
I was unable to find any information in the Sony manual about any settings to
change when using external amplifiers, and i am wondering if there is any common practices that people do when using a setup like this?
Would a receiver like this be able to automatically disable its internal amplifiers if no speaker is connected to a channel? Or is it still trying to send the signals to all the speakers?
I tried setting the speaker selector (A,B,A+B,OFF) to Off, but that turns off the pre-out's as well.
Would installing jumpers from + to - complete the circut with 0 load be something to try, or would that create a short and fry the amp? i remember seeing jumpers on one set of speaker terminals on old receivers that allowed for hookup of multiple pairs of speakers, but that was only on one set. Is at least some load required?
Maybe the Sony gets hot just from its video processing chips, but I thought it wouldn't get as hot when using external amplifiers. :(
Any thoughts on this subject would be greatly appreciated, or if no one has any experience with this particular setup, i'll post results if i find some.