Ty vm
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I have form with that 5013 receiver and it does not really like low impedance loads.
I put it in my old AV room for the new owners, and wished I had specked an external amp.
I used these for left and right These are four ohm spec. They are Elac UniFi.
This matching center. That is 4 ohm.
These Elac surrounds. These are 6 ohm.
I did get some FRs.
This was the mains. The 50 Hz bump gave them a somewhat warm sound.
The Center. I inadvertently had the HSU subs running for this and the surrounds.
As you can see that speaker had just a touch of 'shout'.
The surrounds, which were very good.
Anyhow they really sounded pretty good at very moderate to low volume. I if driven to concert pitch the sound was very gritty and the wrong side of pleasant.
But the receiver, even though it had tons of room and was not in the least constricted for ventilation got as hot as a pistol. I had the distinct feeling I could easily have blown it up with very little effort. It had a very nasty blow up any minute feel to it.
So I advised them to be very cautious with the volume setting and not let their children near it!
So that receiver was not a good fit for those speakers and I doubt yours.
However I think really this newer crop of receivers are good for low volume and I suspect not up to providing concert levels.
That rig really did need a three channel 4 ohm stable amp. Honestly any amp that can not properly drive a four amp load is basically junk. Its time the pretense was stopped and we go to pre/pros and external amps as the norm.