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Thread: H300 Transformer Hum
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October 16, 2015, 08:33 PM #1Junior Member
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H300 Transformer Hum
Does your H300 have an intermittent angry-bee transformer hum?
It's intermittent on mine and it's very annoying. Never had this noise on my previous Arcam amp that was plugged into the same socket. I love the Hegel sound, and want to move up the ladder, but if higher end Hegel products are susceptible to this, it's a bit discouraging...
Video here of the noise:
https://www.youtube.com/watch?v=AfPUH3P6EkU
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October 16, 2015, 08:34 PM #2Audioshark
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H300 Transformer Hum
Welcome to Audioshark Serge.
Just keep an eye on it, there has been some fire issues reported. If you do a search on Audioshark.org, you will find the details and pics.
Sent from my iPhone using TapatalkMy Systems: http://www.audioshark.org/showthread...481#post158481
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October 16, 2015, 09:05 PM #3Super Moderator
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Re: H300 Transformer Hum
Hum could be caused by DC on the AC line. I had some amps that were more easily susceptible to transformer hum than others. A PS Audio Humbuster III or similar took care of the issue.
Fleetwood Deville by Oswald Mills Audio, Vienna Acoustics Haydn Jubilee, Wharfedale Linton w/ stands, Klipsch RB-75, Klipsch RP-160M.
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NAD C 658 streamer.
First Watt SIT-3, Job 250 Monos, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)
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October 16, 2015, 09:58 PM #4Senior Member
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Re: H300 Transformer Hum
Years ago I had a pair of Motif MS100 (CJ built) power amplifiers that exhibited a similar transformer buzz/hum. Mine was an intermittent issue. I tracked it down to interference on the A/C line whenever my wife ran her hair dryer on low (running it on high did not cause it) or when the toaster oven was being used.
Since my listening room is in the basement, it took months for me to make this correlation.
Is your problem intermittent or constant?
Good luck tracking down your issue!Avanti Audio
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October 16, 2015, 10:23 PM #5Senior Member
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Re: H300 Transformer Hum
If the problem is DC voltage on your AC line, Audio by Van Alstine makes the AVA HumDinger to address the issue. It's a reasonable $140 and I believe that they sell it with a money back guarantee. I know of several users that have found it to resolve their similar issues with humming transformers so it could be worth a try.
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October 16, 2015, 11:28 PM #6Junior Member
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Re: H300 Transformer Hum
Thank you for the suggestion. I placed an order for the "emotive cmx-2" which claims to perform the same function. Hopefully it does the trick, otherwise I'll try the humdinger.
Originally Posted by audio.bill
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October 16, 2015, 11:30 PM #7Junior Member
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Re: H300 Transformer Hum
Yes, I saw that thread! Worth a good laugh.
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October 17, 2015, 12:52 AM #8Super Moderator
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Re: H300 Transformer Hum
Originally Posted by serge944
I have 2 of the Emotiva CMX-2's and they work superbly too. Let us know if it solves your issues.Fleetwood Deville by Oswald Mills Audio, Vienna Acoustics Haydn Jubilee, Wharfedale Linton w/ stands, Klipsch RB-75, Klipsch RP-160M.
Job INTegrated. Luxman L-595aSE
NAD C 658 streamer.
First Watt SIT-3, Job 250 Monos, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)
Topping D90, RME Audio ADI-2 DAC FS, ModWright Ultimate Sony XA-5400ES.
Burmester 948, McIntosh MCLK12, Kimber Kable, Siltech, Cardas, Avanti Audio cables.
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October 26, 2015, 08:06 PM #9Junior Member
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Re: H300 Transformer Hum
Wow. Wow. Wow. With the Emotiva CMX-2, the transformer is DEAD quiet. Problem solved.
What a bargain in the audio world. More than that, Emotiva is having a holiday sale right now, so it's even cheaper. I just purchased a second one.
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October 26, 2015, 08:38 PM #10Super Moderator
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Re: H300 Transformer Hum
Awesome!
That's it! DC on the AC line. It seems pretty typical and I am glad you solved the problem. Thank you for the update.
Originally Posted by serge944
Fleetwood Deville by Oswald Mills Audio, Vienna Acoustics Haydn Jubilee, Wharfedale Linton w/ stands, Klipsch RB-75, Klipsch RP-160M.
Job INTegrated. Luxman L-595aSE
NAD C 658 streamer.
First Watt SIT-3, Job 250 Monos, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)
Topping D90, RME Audio ADI-2 DAC FS, ModWright Ultimate Sony XA-5400ES.
Burmester 948, McIntosh MCLK12, Kimber Kable, Siltech, Cardas, Avanti Audio cables.
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
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