Loud pop/screech when powering on amp


Hello All,

 

I have an Audio Refinement Multi 5. I just bought her used in pristine condition a couple months ago. I get a loud pop when I turn it on. But the last couple of days there's almost like a weird screeching sound right after the pop . Everything sounds. fine when I play music/movies, but I'm a little concerned if this is a bad sign. I'm also a little concerned if this is harming my speaks. I have had other amps that pop and I know this is normal. I always turn her on last and turn her off first and volume is always low when powering on and off. I only use the power button in the front when done for the night. I have not turned the main power button off since connecting her. I have a Shunyata power cable plugged directly into the wall on the amp. I have an Audioquest Powerquest 303, should I maybe try plugging the amp into that, would that help? I also did turn off the main power switch on the back this morning and will try when I get home to see if this helps when I power her up...

 

Thanks in advance for any advice...

 

Best Regards...

kingbr

Showing 12 responses by kingbr

Thanks @noromance and indeed @immatthewj NJ is road trip from NH😊!

@bigkidz if you’re available any chance you’d be interested in a 5 channel amp checkup/repair?

 

 

Thanks for the replies! @noromance i don’t recall seeing anything about red dot hot side? Do you think using the original power cable will help?

@soix the manual does recommend turning off the front power switch when finished because she does run warm. Maybe leaving it on though would better? My fear is speaker damage not so much the amp. 
 

@erik_squires i wouldn’t know where to get her looked at? It’s an older amp not manufactured anymore? Where could I even try to get someone qualified to give it a look? Any ideas? I live in NH…

Thanks @immatthewj , so why would the original power cord make any difference do you think? 
 

Thanks @erik_squires, ya I guess that’s the best place to start local shop. 
 

So when I got home I flipped the main power switch in back on. Then the front power button. Still the pop but no after screech sound. I would describe this as something close to the sound of a quick drag of the needle across an album on a turntable. But again after switching off the back power switch this morning and turning her back on today no screech. Weirdly it almost seems like the pop only comes from my right front speaker. Not 100% sure so next time I’m going to listen to try and confirm that.

Maybe this is normal. My Earthquake Cinenova Grande does the pop thing and Joseph S said that’s completely normal. It was when the screech sound was added that I became concerned…

Thanks again All for helping. I got this amp for under 1K for my second system, so if I have to replace it it wouldn’t be the end of the world. However if she damages my SF Sonetto’s, now I got HUGE problems😬😳

Thanks so much @soix! Never saw this in the manual and never heard of this? But again the Shunyata cord plugs in the same way as the stock cord, no?

Any idea how I could contact bigkidz?

Thanks All! Love the comic relief😂! Can’t help it have always referred to my fear as she😂

Thanks @bigkidz. I’m waiting on a response from AR. I may just cut my losses and try to find another 1Kish 5 channel. The screech has not come back yet😬. It’s a second system so no great sense of urgency other than protecting my SF’s..

@immatthewj it seems only 1 side. Appreciate the info on the capacitor, gotta tell ya opening and going inside anything electronic is WAY above my paygrade😳. I did try AR’s website (I honestly didn’t think they were still in business) and sent an email last night, so I’ll see if they reply and what they suggest…

Question though, with a leaky capacitor would the amp still play and sound fine? Because it does there’s no static or anything?

Thanks @panzrwagn! I’m looking around the C list now…am I doing damage by playing it? Everything sounds fine while it’s playing? Maybe just leave it on for now rather than power off?

Thanks @larry5729 ​​​​@mapman. I just reached out to the guy I bought it from (bought it here). He was really great so I’d like to believe he’s better than that and didn’t try to offload it…I’ll see if he responds. It’s my second system and I paid under 1K, so though that’s a lot of money, it’s not the end of the world. And I can always fall back on the Outlaw 550 for just over $800 with shipping🤷🏼‍♂️.

Waiting to hear back from AR (emailed and called but was on hold for 20+minutes with interludes of music and a recorder woman’s voice speaking French🤦🏼‍♂️🔫😂)

 

I believe the amp is > 10 years. As for opening and trying to diagnose/repair myself, this is most definitely WAY over my pay grade. Again weird thing is it’s playing and sounding fine. Would it do that if it had issues???

 

@soix I actually saw that McCormack on Audiomart. However that one is up there in age as well, no? And seller has it rated 7/10. A little hesitant but that one is definitely on my list. Think that’s a solid amp?

Thanks so much for all the thoughtful replies!

@jetter I have bought from Fidelis Nice to know they can assist. To your point might be cost prohibitive.

@soix Thank you for the details on the McCormack. So tempted on that. I reached out to the seller to ask how old and if he’s the original owner…

So many things to think about??? And again maybe this is normal?? Joseph S of Earthquake flat out stated there will be a pop on startup. Still nothing from AR which is now Focal/Naim I guess. Stay put, have someone look at the AR, McCormack, or Outlaw???🤦🏼‍♂️🤷🏼‍♂️