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Help with possible left channel issue.

My apologies if this is supposed to be within the Tech Talk section. 
 

Recently purchased a used Rogue Audio Pharaoh II.  Have been enjoying it for about a month with a few quibbles (static from speakers when changing volume via the remote and very brief light static from speakers upon power on/off). 
 

My typical system power up is (Innous ZENmini MK3 —> Marantz SACD 30 —> Rogue Audio Pharaoh II). All three are plugged into a Furman PST-8 Digital power strip which is plugged into the wall. A Rel T7i is also plugged into the wall, but I really don’t use it much and only power it on when in use.

Last night after system power up, I hit play on a track via the Innous Sense App and heard a loud static pop from the left speaker. First reaction was to turn the volume down. (typically leave the volume knob at about 7pm) and pause the track. I waited a few second then unpaused the track and raised the volume a bit. All seems ok and I listened to music for two hours or so. Powered down in reverse of power up (Rogue Audio Pharaoh II —> Innous ZENmini MK3 —> Marantz SACD 30). 
 

Today, when I powered up the system and went to listen to the Innous ZENmini MK3, there was no audio out of the left speaker (Sonus Faber Sonetto V Gen 1).  I turned the balance knob left/right and right/left, but only heard slight static from the left speaker when the balance knob was turned passed neutral. I powered down the system and swapped the right speaker cables into the left speaker, powered the system back up and the left speaker was working fine.  I’m guessing that it is the left channel, but I would rather not open up the amp and mess around with tubes, wires, etc. I did reach out to Rogue and and awaiting a response. Luckily they are relatively close, so hoping I can just drop off the amp for a look over and repair if they do find an issue. 
 

In the interim, is there any one here with the same amp or other Rogue Audio product that had a similar channel related issue?  The Pharaoh II is an integrated amp, likely most here are using separates. 
 

Any insights or thoughts on the matter would be greatly appreciated. 
 

Note: A the time of the incident, the Rel Ti7i was never on, though it remains plugged into the wall and connected to the amp via a high lever Speakon connection. 

Thanks. 

shredsled

Showing 2 responses by jeffbij

jeffbij
208 posts
 

So, the speaker is ok.  Next L/R swap the interconnects into the Rogue to make sure the problem isn't with the source.  I'd then switch to a different "input" set on the Rogue as well.  

If both interconnect swaps/changes still yield a problem with the left side, then it most likely is the Rogue and you are back to sending integrated in for service.

Most likely you have either

  • blown one of the 4 fuses inside the Rogue,
  • had one tube fail
  • or blown a capacitor.

 

jeffbij
208 posts
 

@shredsled 

Not sure what you mean by “L/R swap the interconnects into the Rogue”

I was just referring to flipping the interconnets (left channel from source to right input on Rogue, and visa versa for the right channel) to confirm that the left input wasn't the source of the fault.

Regardless, I would say that you have confirmed the is a failure in the Rogue.

Good luck.  

-Jeff

 

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