Monoblock power amps same dedicated outlet?


Hi,

Looking for input whether putting both monoblock power cables into same dedicated line outlet receptacle is ill advised.

I would rather not get a dedicated line for each monoblocks ....

But if big differences...I could....

I have pass labs 260.8 monoblocks..
80ed0208 31c0 4577 9fa1 e63df01d1a04karmapolice

Showing 2 responses by karmapolice

First of all thanks for all the detailed input.

I should have added more detail though ...my line preamp and sep phono preamp and turntable are all on a second dedicated line plugged into a synergistic power conditioner.

My third dedicated line is just for the pair of REL subwoofers.

Late last nite I changed it so each monoblock on different dedicated line...but second outlet for each monoblock has REL sub....i figured less current draw more headroom for monoblock albeit not ideal same circuit as sub.

The sounds seems more open and bass still fantastic....maybe faster bass ?

I did reach out to Pass and Kent already emailed me back stating that one dedicated circuit is fine for both monoblocks that the power consumption is not that much ....unless you aee meters fluctuating a lot you not taxing amps nor line. He gave no opinion about sound but they claim power cables have little affect on sound and that is not my experience.

I was not thinking could blow something...maybe i should have....but just whether at loud volume would get more lively sound....seems to be the case but might be perception bias....will see over time over more records it still prefer this way...

Anyone think bad idea sonically to mix one dedicated outlet for left monoblock amp and left sub...I have REL set at low output and a low crossover so sub are very modestly involved.

I have another non dedicated outlet that could get another dedicated line but feel 3 dedicated lines enuf for now.....my SR atmosphere tweak goes into non dedicated line...

Lastly I did try running the subs into the power conditioner but felt somehow sound waa a little less big and live....the monos def prefer not going through power conditioner....SR says no power limits and my other system the stereo amp sounds better into their power conditioner but its a far less powerful amp
I am experimenting for optimal sound as I am confident that I will not trip a breaker....I am not hearing any hum or ground issue in any of the configurations....

I am trying to see if a sonic difference if each monoblock is on a separate dedicated line or not.....

its not apples to apples since one line is 4 feet shorter than the other and has a different SR outlet too (yeah I know that is a controversial tweak) .....I cannot even say that the electrician used the same wiring but the gauge was the same .....

I am not sure there is a difference but my initial feeling was a bit more headroom when monoblocks were separated on different dedicated lines.....this could be some sort of bias....but if there is no hum or other negative that develops will probably stick with it.

I also tried putting subwoofers on a non dedicated line to separate it from the amp but that sound was less pleasing....not surprising since it is a nondedicated line and has a much higher gauge too....I really didnt hear any improvement in the sound of the midrange and treble with the monoblocks separated from the sub.....

I am assuming that the REL S/5 SHO taxes the dedicated line less than the monoblock but that might be wrong.....I will say I listen to the monoblocks a lot louder than the sub (the sub volume is ten clicks from minimum and the crossover is 9 clicks from minimum so essentially has only a modest output somewhere under 50hz,,,,the speaker claims goes down to 35hz +-3 but my guess in my room peters out in the 40s