372 posts / 0 new
Last post
drummerman's picture
Offline
Last seen: 19 hours 39 min ago
Joined: 18/01/2008 - 21:12
Posts: 5233
RE: Rega have let me down again!

I agree with NHL. A Tacima could also help.

In addition you could open the amplifier up and check the torroid is securely screwed down.

Having said all that, you are right, that shouldn't be necessary with a new product but bear in mind that a lot of amplifiers have a (slight) transformer buzz. Larger transformers are more susceptible.

Rega's service seems very good, they are aware that after sales service is a big part of their business. If you like the sound try another exchange under the proviso that if there is something wrong again, you'd want a refund/other product.

Hope you can sort it out Steve.

Regards

Macspur's picture
Offline
Last seen: 3 days 1 hour ago
Joined: 03/05/2010 - 06:56
Posts: 2162
RE: Rega have let me down again!

I would strongly urge you not to open up the amp yourself, this would devalidate your warrentee.

Mac

www.macsmusic.blogbubble.net

Electrocompaniet EMC1UP, Sonos Connect, Accuphase E350, Harbeth SHL5 Siltech 25th anniversary 33i XLR, Auditorium 23 SC, HiFi Racks Podium Reference rack, matching LS stands.

stevebrock's picture
Offline
Last seen: 1 week 5 days ago
Joined: 13/11/2009 - 11:16
Posts: 4083
RE: Rega have let me down again!

My other Elicit and Brio never hummed, the fact I can hear it 3m sat on sofa during quiet passages to me is not acceptable,I don't see why I should have to buy a mains conditioner when I have spent £1600 already, willbe on the phone at 9

Michell Gyrodec, RB303, Benz Micro Ace H, Icon Audio ST40 w/KT88s, PS1 Phono, Kudos X2, Rega Apollo R, DAC

 

 

BigH's picture
Offline
Last seen: 14 hours 46 min ago
Joined: 29/12/2012 - 12:31
Posts: 3846
RE: Rega have let me down again!

stevebrock wrote:

My other Elicit and Brio never hummed, the fact I can hear it 3m sat on sofa during quiet passages to me is not acceptable,I don't see why I should have to buy a mains conditioner when I have spent £1600 already, willbe on the phone at 9

I agree, at £1,600 really these problems should have been sorted out, I really think Rega should tighten up their quality control.

NHL's picture
Offline
Last seen: 7 months 2 weeks ago
Joined: 12/11/2009 - 07:57
Posts: 544
RE: Rega have let me down again!

BigH wrote:

stevebrock wrote:

My other Elicit and Brio never hummed, the fact I can hear it 3m sat on sofa during quiet passages to me is not acceptable,I don't see why I should have to buy a mains conditioner when I have spent £1600 already, willbe on the phone at 9

I agree, at £1,600 really these problems should have been sorted out, I really think Rega should tighten up their quality control.

Naim also hum, according to their forum, if the mains contains DC. Get a conditioner, will protect against some spikes also. Even my old Audiolab 8000A hummed occasionally.

plastic penguin's picture
Offline
Last seen: 6 hours 38 min ago
Joined: 28/04/2008 - 10:56
Posts: 16988
RE: Rega have let me down again!

All you who think a mains conditioner is the right route to go down are talking nonsence. No-way do you expect to pay £1600 and then some to stop it from humming.

It could be a mains problem or it could be earthing - had exactly the same with the Leema, except I could only hear mine on headphones.

BTW, I've never heard Naim amps hum and I've heard most of the 5i and XS ranges.

One has to accept that Rega's quality control is pants. Personally I'd write them a stinking letter. Not good enough, whether it's £500 or £1600.

Amp; CDP; Turntable; Tuner; Speakers

plastic penguin's picture
Offline
Last seen: 6 hours 38 min ago
Joined: 28/04/2008 - 10:56
Posts: 16988
RE: Rega have let me down again!

Macspur wrote:

I would strongly urge you not to open up the amp yourself, this would devalidate your warrentee.

Mac

www.macsmusic.blogbubble.net

True - that'll knacker the warranty, and you won't have a leg to stand on.

Amp; CDP; Turntable; Tuner; Speakers

NHL's picture
Offline
Last seen: 7 months 2 weeks ago
Joined: 12/11/2009 - 07:57
Posts: 544
RE: Rega have let me down again!

plastic penguin wrote:

All you who think a mains conditioner is the right route to go down are talking nonsence. No-way do you expect to pay £1600 and then some to stop it from humming.

It could be a mains problem or it could be earthing - had exactly the same with the Leema, except I could only hear mine on headphones.

BTW, I've never heard Naim amps hum and I've heard most of the 5i and XS ranges.

One has to accept that Rega's quality control is pants. Personally I'd write them a stinking letter. Not good enough, whether it's £500 or £1600.

LMGIFY:

http://forums.naimaudio.com/topic/help-with-hum

davedotco's picture
Offline
Last seen: 12 hours 11 min ago
Joined: 24/04/2013 - 10:02
Posts: 3964
RE: Rega have let me down again!

NHL wrote:

BigH wrote:

stevebrock wrote:

My other Elicit and Brio never hummed, the fact I can hear it 3m sat on sofa during quiet passages to me is not acceptable,I don't see why I should have to buy a mains conditioner when I have spent £1600 already, willbe on the phone at 9

I agree, at £1,600 really these problems should have been sorted out, I really think Rega should tighten up their quality control.

Naim also hum, according to their forum, if the mains contains DC. Get a conditioner, will protect against some spikes also. Even my old Audiolab 8000A hummed occasionally.

As an ex dealer of all these products I have some experience of these matters.

Large power transformers (usually toroids) will oscillate ar the frequency at which they are used. A lot of the cost of transformers of this type goes into the way they are wound and the lamination required to make sure the transformer itself does not vibrate (and rattle) audibly.

This is something of a tuning process, with the transformers built so that they are as quiet as possible at 50hz. They may well be noisy at other frequencies but that is usually unimportant. In this case there is something (distortion) on your mains that is causing the problem, usually this is high frequency noise or significant distortion on one half of the waveform.

This is where the noise comes from and in my experience I have rarely if ever seen it cured by the use of a Tacima style filtered mainsblock. More sophisticated and effective filtering will probably help but the products that have that capability are not cheap.

Assuming the transformer is within spec (at 50hz remember) then there is a degree of hit and miss in this, one amplifier may react poorly to your specific mains character, others,like your original, may have no issues.

Frustrating I agree, but your 'circumstances' may be as much to blame as Rega's QC.

Sospri's picture
Offline
Last seen: 4 days 19 hours ago
Joined: 23/03/2011 - 10:22
Posts: 366
RE: Rega have let me down again!

I have never heard my Supernait hum, for one very good reason it dosen't, 

I do wish people would post on their experiance rather than expressing an opinion that they have read on the internet..............

Cypher's picture
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/06/2007 - 06:45
Posts: 1424
RE: Rega have let me down again!

I've always listened to budget amps (Rotel, Marantz, Pioneer, NAD)..............I've never experienced any humming at all.

 

davedotco's picture
Offline
Last seen: 12 hours 11 min ago
Joined: 24/04/2013 - 10:02
Posts: 3964
RE: Rega have let me down again!

Sospri wrote:

I have never heard my Supernait hum, for one very good reason it dosen't, 

I do wish people would post on their experiance rather than expressing an opinion that they have read on the internet..............

Most don't, however in certain circumstances even your 'perfect' Supernait could hum, different distortion on your mains might exite resonances that are not being exited at the present time.

NHL's picture
Offline
Last seen: 7 months 2 weeks ago
Joined: 12/11/2009 - 07:57
Posts: 544
RE: Rega have let me down again!

Cypher wrote:

I've always listened to budget amps (Rotel, Marantz, Pioneer, NAD)..............I've never experienced any humming at all.

 

That is the funny thing, budget amps do not hum, expensive ones do. Could be the toroidal transformers.

 

davedotco's picture
Offline
Last seen: 12 hours 11 min ago
Joined: 24/04/2013 - 10:02
Posts: 3964
RE: Rega have let me down again!

Cypher wrote:

I've always listened to budget amps (Rotel, Marantz, Pioneer, NAD)..............I've never experienced any humming at all.

Smaller transformers are easier to build and produce smaller magnetic fields, so the problem is much reduced. 

chebby's picture
Offline
Last seen: 12 hours 21 min ago
Joined: 02/06/2008 - 09:40
Posts: 16434
RE: Rega have let me down again!

NHL wrote:

Naim also hum, according to their forum, if the mains contains DC. Get a conditioner, will protect against some spikes also.

 I had 11 years with a Rega amp that never hummed or buzzed and two years with an all Naim system (three toroids of different sizes in the amp, tuner and CD player) that never hummed or buzzed either.

Either I have been blessed with clean mains or it's not normal for amps to buzz  or hum audibly (whether audible through the casing, or through the speakers, or both).

 

 

 

"We are currently awaiting the loading of our complement of small lemon-soaked paper napkins for your comfort, refreshment and hygiene during the journey."

Pages

Log in or register to post comments