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domenn's picture
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Humming ,buzzing Brio r

I've got brand new Brio R . I was hoping that second unit will be ok . but  i just noticed  that my left speaker is humming , buzzing more than left speaker , it's tweeter actually . I can hear that from 30 cm . My speakers are placed on computer desk so it's  annoying . The old Brio R I had before was not buzzing so loud . Now I am getting paranoid . 

Is this another faulty unit ? .Sound is very good but I went for rega for their well known reliability too .    puzzled So do I have to contact my seller again ? they will thing I'm crazy .

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RE: Humming ,buzzing Brio r

any owner of BrioR? please help . 

Anonymous
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RE: Humming ,buzzing Brio r

Hi domenn,

I'm experiencing something very similar to what you are describing.

In September I got my first Rega Brio R with the Rega DAC. It sounded great, but I noticed this very subtle buzz/hum from the tweeters of my speakers that I haven't heard with my previous amps. It's not noticeable when listening to music at a medium volume, but when I'm home alone I do notice this buzz/hum from the tweeters when the amp is turned on and nothing is playing. I also notice the buzz/hum when I listen to talk radio with pauses, and it's actually very annoying.

I went to the dealer and got a new Brio R amp. The new amp had the same buzz/hum and also the additional problem that the input selector would always switch to input 5 when turned on. So now I had an amp with two obvious problems.

The dealer - reluctantly - gave me a third new Brio R amp, and this amp still has the buzz/hum problem. I'm very certain that it has nothing to do with ground connection or anything else outside the amp. My best bet would be that it's the power supply that interferes somehow.

To be honest I'm a bit disappointed with Rega since the amp is otherwise very good indeed. I was planning to go all in with Rega and buying a P3 and the RS5's but after the experience with the Brio R I'm no longer sure that Rega would meet the standards that I expect from a renowned hi-fi brand.

Do anybody else have the same problem with the Rega Brio R?

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RE: Humming ,buzzing Brio r

 

Hi , maroni so I've got my 3th unit  and hum buzz is still there  so I'm trying to get used to it   , and input 5 that was exactly problem with my first unit , looks like Rega is making them in rush   Smile    

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RE: Humming ,buzzing Brio r

I have the hum.  But I have a mains wire running by the speaker cables so I assumed it was just interference.

 

 

 

Anonymous
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RE: Humming ,buzzing Brio r

VinylRush wrote:

I have the hum.  But I have a mains wire running by the speaker cables so I assumed it was just interference.

Have you tried to move the mains wire away from the speaker cables?

I thought too in the beginning that the hum had something to do with external interference, but I have now tried several combinations of cables and positions - and it just keeps humming... so my conclusion this far is that it must be the power supply making interference internally...

I really wonder why this apparent problem is not mentioned in all the raving reviews.

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RE: Humming ,buzzing Brio r

Hi.

Not unless I pull my whole unit out, which I don't want to do.  TBH it's barely audible on mine and doesnt bother me.  I never thought it could be noise from the power supply.  

Not sure what else you can do. 

Maybe Rick from Musiccraft can shed some more light on it and see if any of the units he has heard has this problem.

 

Cheers.

Anonymous
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RE: Humming ,buzzing Brio r

I wrote to my local Rega distributor regarding the humming, and they wrote to the Rega main office.

Rega answered that they are aware of a 50Hz hum caused by the transformer.

I guess the humming is just a part of the package then... although I'm not happy about it!

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RE: Humming ,buzzing Brio r

maroni wrote:

I wrote to my local Rega distributor regarding the humming, and they wrote to the Rega main office.

Rega answered this:

"We are aware of the 50Hz hum, having a transformer of that VA rating so close to amplification circuits can cause a hum. Terry had the BrioR toroid designed so that it would have "lower" strength areas of the magnetic field to enable mimimum hum to be present. Therefore each Brio-R toroid is rotated and set during production with the "noisier" part of the transformers field aimed away from the sensitive circuitry making the hum acceptable at a low level."

I guess the humming is just a part of the package then... although I'm not happy about it!

Crikey, I'm not surprised your not happy that is real p155 poor design especially for an amp of this price range.
Anonymous
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RE: Humming ,buzzing Brio r

after reading this i have checked mine and luckily i have no hum at all, i hope you get it sorted out.

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RE: Humming ,buzzing Brio r

My new Brio-r also hums, but I have to put my ear close to the speakers to hear it.

Behind my hifi / home cinema kit its spaghetti junction, so just assumed mains

interference. It doesn't interfere with my listening pleasure even at low levels.

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RE: Humming ,buzzing Brio r

Picked mine up today and....guess what? lol

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RE: Humming ,buzzing Brio r

what ??? no humm no buzz    Smile      I have tried 3 units plus demo one and all had same problem 

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RE: Humming ,buzzing Brio r

No, it's humming.

I'm writing to Rega over the weekend citing this post amongst other things. This just shouldn't be happening with a £500 amp. It doesn't spoil the SQ but it is annoying that I have to keep remembering to switch it off and I have only had it for less than a day!

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RE: Humming ,buzzing Brio r

I'll be attending Bristol show  so I'll ask about this problem , and also about mains cables I am thinking to upgrade dac and amp  maybe it will reduce humbuzz . 

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RE: Humming ,buzzing Brio r

Well as I say, I don't believe this should be occurring with a £500 amp. Looking at the reply from Rega above does indicate a design flaw but I will have to await their reply for their take on it. It's annoying even at 10-12' away, and I'm pretty unhappy at the moment because it is marring what is otherwse an excellent amplifier.

Well as I say, I don't believe this should be occurring with a £500 amp.

Looking at the reply from Rega above does indicate a design flaw but I will have to await their reply for their take on it. It's annoying even at 10-12' away, and I'm pretty unhappy at the moment because it is marring what is otherwse an excellent amplifier. It might seem trivial to some but I do like to warm my amp up a bit first, and i can't always be bothered to get up last thing at night to switch it off. There was no mention of this in the WHF review which I would have thought they would have passed comment on if their had been this issue with their review unit, so I'll just have to wait to learn if it's a fault or a flaw.

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