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Old 05-17-2020, 03:10 PM
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Default Anyone else with an MC7106 that hums?

And no, I don’t think it’s because it doesn’t know the words...
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Old 05-17-2020, 03:44 PM
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Nope. Something is obviously not right. Time to get it on a bench with someone who knows what to do.
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Old 05-17-2020, 03:46 PM
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Yeah might have too. It’s not loud obviously but I’ve also done some digging and it appears this occurs quite a bit.
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McIntosh MC402, C2500, MC7061, MX121 and MVP861. VPI Prime Scout TT. Sonus Faber Sonetto Vs, Sonus Faber Center I, Two REL T/9i subs. Wharfedale 11.2 surrounds.

Lake house: Beomaster 5500, Beogram 5500 CD, Beocord 5500 and U-Turn Orbit Plus TT. Wharfedale 225 speakers
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Old 05-17-2020, 04:10 PM
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Does it hum when just plugged into the wall with no other connections?
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server
Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard
Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables,
Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU,
Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs,
Other: Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack
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Old 05-17-2020, 04:43 PM
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Yes. Faintly. I can hear it from about 8 feet away. Not loud just a steady hum.
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McIntosh MC402, C2500, MC7061, MX121 and MVP861. VPI Prime Scout TT. Sonus Faber Sonetto Vs, Sonus Faber Center I, Two REL T/9i subs. Wharfedale 11.2 surrounds.

Lake house: Beomaster 5500, Beogram 5500 CD, Beocord 5500 and U-Turn Orbit Plus TT. Wharfedale 225 speakers
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Old 05-17-2020, 05:23 PM
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Maybe others can jump in but I would think that’s not good. It’s not likely going to change with another outlet or being connected to a power conditioner.
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server
Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard
Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables,
Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU,
Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs,
Other: Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack
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Old 05-17-2020, 05:25 PM
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I don’t love it but I know others have had this issue.
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McIntosh MC402, C2500, MC7061, MX121 and MVP861. VPI Prime Scout TT. Sonus Faber Sonetto Vs, Sonus Faber Center I, Two REL T/9i subs. Wharfedale 11.2 surrounds.

Lake house: Beomaster 5500, Beogram 5500 CD, Beocord 5500 and U-Turn Orbit Plus TT. Wharfedale 225 speakers
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  #8  
Old 05-17-2020, 05:45 PM
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Maybe I have just been lucky. I bought mine in Seoul in 1997 and it has never been serviced beyond to change voltage and repair the lights. No hum, dead quiet.
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Main Equipment: Kharma Elegance dB11-S, JL Audio F113v2 X 2, Block Audio Line & Mono SE Amplification, Bricasti M21 DAC, Antipodes Kala K-50 Server
Power: Shunyata Everest 8000, Sigma XC v2, Sigma NR v2, Block Audio PCs, Defender, ADDPowr Wizard
Grounding: Shunyata Altaira CGS - 4 X Alpha CGS cables,
Network : Supra Cat 8+, Twin (Nenon) Modified Buffalo GS2016 Switches, Keces P3 LPSU,
Cables: Wireworld Platinum 8 USB, Wireworld Platinum Eclipse 8 Speaker cables, 6M & 1M Tubulus Concentus ICs,
Other: Multiple GIK products, Stillpoint Apertures, Stillpoint Minis and Ultra SS, Three 20 Amp lines, Furutech GTX - Gold outlets, Adona Rack
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  #9  
Old 05-17-2020, 06:02 PM
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Lucky! It's really not that annoying but just wish it were dead quiet. Just checked with a friend of mine, he has one and his hums - not all the time but often enough that he noticed it did this. I can call my guy at McIntosh Ron Cornelius, he seems to know everything.
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McIntosh MC402, C2500, MC7061, MX121 and MVP861. VPI Prime Scout TT. Sonus Faber Sonetto Vs, Sonus Faber Center I, Two REL T/9i subs. Wharfedale 11.2 surrounds.

Lake house: Beomaster 5500, Beogram 5500 CD, Beocord 5500 and U-Turn Orbit Plus TT. Wharfedale 225 speakers
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  #10  
Old 05-17-2020, 09:30 PM
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Quote:
Originally Posted by McGuyDLF View Post
Lucky! It's really not that annoying but just wish it were dead quiet. Just checked with a friend of mine, he has one and his hums - not all the time but often enough that he noticed it did this. I can call my guy at McIntosh Ron Cornelius, he seems to know everything.
You have DC leaking into your mains. Transformers don’t like DC in mains and they buzz/hum when they do. You can measure this with a voltmeter. Some other equipment is causing this. Typically large flat panel displays with switching mode power supplies. You can start unplugging other electronics until the hum goes away to isolate the cause. PS Audio used to have a device called Humbuster which removed DC from the mains. Time to time these show up for sale.
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