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Power Conditioners Voltage regulation to AC Regeneration

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Old 12-22-2016, 08:35 PM
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Default Amp and Subs Humming All of a Sudden

I'm having a heck of a time hunting down some power anomalies in our new house. The problem is, it JUST started happening about a week ago. Here's a little background:

I designed my system's power to have it's own sub-panel. All audio circuits are wired same phase, same ground leg with equal lengths of 10AWG wire, terminated with Shunyata outlets. I'm using a Shunyata PS8 and Defender for all the components, but subs and amps are plugged straight into the wall. Up until about a week ago, my system was completely quiet.

Of late, my REL S5's started to sizzle a bit with an underlying 60Hz hum...not super loud, but audible from 2 ft between tracks. In addition, my McIntosh 8207 has developed a transformer hum that is also audible from about 2 feet. The subs exhibit the buzz/hum when all signal connections are unplugged.

The kicker is that there haven't been any additions or subtractions to the system. The only variables I can think of:

1. We've had 3 more homes go up in our cul de sac over the last few months
2. The weather here was COLD for the last few weeks (well below zero here in Mn). Much more demand on the grid?
3. We have Christmas trees all over the place, but again, the A/V power is isolated.

While I'm not certain that any of the variables are viable explanations for my power going crazy, I wanted to lay it all out there.

Any thoughts on the cause, or solution are welcomed!
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Tyler Acoustics Decade D2 and Center w Danny Richie designed x-overs - REL S5's - KEF 160QL-160QR-130QR (surround/atmos)
Shunyata PS8 w/Defender - Shunyata and AudioQuest power cables - Shunyata and Audioquest Interconnects
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Old 12-22-2016, 08:40 PM
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First thing I'd do is flip off ALL breakers (except of course your AV breakers) and see if it goes away. If it does, flip them back on one at a time until the noise comes back.
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Old 12-22-2016, 08:53 PM
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Quote:
Originally Posted by Cohibaman View Post
First thing I'd do is flip off ALL breakers (except of course your AV breakers) and see if it goes away. If it does, flip them back on one at a time until the noise comes back.
Thanks for the speedy reply! Great idea...I will definitely give that a try to see if I can narrow it down. Might be a few days though, as we have holiday guests.
I'll let you know what I find out.
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Main Room

McIntosh C-2600 - Marantz AV 8802 - McIntosh -Mc820 Marantz 7055 (atmos amp)
ProJect Xtension 10 w/Koetsu Rosewood Standard
Mac Mini/Audirvana - Drobo 5D Media Server Drive - Cambridge Audio Azur BD 751 - Sonos Connect
Tyler Acoustics Decade D2 and Center w Danny Richie designed x-overs - REL S5's - KEF 160QL-160QR-130QR (surround/atmos)
Shunyata PS8 w/Defender - Shunyata and AudioQuest power cables - Shunyata and Audioquest Interconnects
Audio quest Oak Speaker cables (LCR)

Living Room

KEF LS 50 - Marantz NR 1506 - Sonos Connect

Master Suite and Garage

Sonos AMP and KEf 160 QR
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  #4  
Old 12-22-2016, 09:12 PM
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Quote:
Originally Posted by rjryan View Post
Thanks for the speedy reply! Great idea...I will definitely give that a try to see if I can narrow it down. Might be a few days though, as we have holiday guests.
I'll let you know what I find out.
Leave em' in the dark; audio priorities come first!
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FLORIDA
MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) PS AUDIO PPP(8) RGPC 1200(20) RGPC POLE PIG(4) JL GOTHAM SUBS(2) SONOS ZP90-W4S MOD, LUMAGEN RADIANCE SCALER, SONY VPH-G90U PROJECTOR, SVS SCISSOR LIFT, STEWART STUDIOTEK 120" MOTORIZED SCREEN, ASC ACOUSTIC PANELS & BASS TRAPS, CINEMA-TECH SEATING, WIREWORLD PLATINUM STARLIGHT HDMI, GOLD ECLIPSE CABLES & SILVER ELECTRA PC'S
Reference System: ACCUPHASE A200 MONOBLOCK AMPS, C3850 PRE-AMP, DP900 CD/SACD PRECISION TRANSPORT, DC901 PRECISION DIGITAL PROCESSOR, DG-58 DIGITAL VOICING EQUALIZER, T-1100 FM STEREO TUNER, PS520 POWER SUPPLY, SONOS ZP90-W4S MOD, HRS-SXR CUSTOM 4V-4V RACK w/ M3X 1921 SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S
CAPE COD

MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MS750(3) MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K01-X SE CD/SACD PLAYER, HT3F(2) XRT2K, XCS2K, XR27(2) OPPO-BDP95, PS AUDIO PPP(8) PUREPOWER 1050(4) RGPC 1200(15) JL GOTHAM SUBS(2) JL FATHOM F113 SUBS(4) SOUND ANCHOR SUB STANDS(2) LUMAGEN RADIANCE PRO SCALER, SONY VPH-G90U PROJECTOR, STEWART STUDIOTEK 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO, SONOS ZP90-W4S MOD, BRYSTON BHA-1, ASC ACOUSTIC PANELS & BASS TRAPS, FORTRESS SEATING, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S.
Analog Rig: CLEARAUDIO INNOVATION WOOD w/ OUTER RING & CLAMP, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, KLAUDIO RCM, HRS-MXR REFERENCE 4V RACK-GLOSS BLACK w/ M3X 1921 SHELVES, AESTHETIX RHEA SIG PHONO-PRE, PS AUDIO PPP, RGPC 1200, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP LOADED, 948 POWER CONDITIONER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, ESOTERIC GRANDIOSO P1/D1 STACK, G01X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO, HRS-SXR CUSTOM 2V-3V-2V RACK w/ M3X 1921 SHELVES, STILLPOINTS, SONUS FABER AIDA SPEAKERS IN RED VIOLIN FINISH, JL FATHOM F113(2) SOUND ANCHOR SUB STANDS(2) ASC ACOUSTIC PANELS & BASS TRAPS, GIK PICTURE PANELS, PS AUDIO P10, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S

Library System: ESOTERIC GRANDIOSO SYSTEM M1 MONOBLOCK AMPS(2), C1 LINESTAGE PRE-AMP, K1 CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E03 PHONO-PRE, SILENZIO, SONOS ZP90-W4S MOD, AERIAL ACOUSTICS 20T V2 SANTOS ROSEWOOD, AERIAL SW12 SUBS SANTOS ROSEWOOD w/ BASES(2), CANTON REFERENCE K3, DALI EPICON 8 RUBY MACASSAR, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, FURUTECH SILVER ARROWS PHONO CABLE, KLAUDIO RCM, SHUNYATA PS8, RGPC 1200(2) STEVE BLINN COMPLETE CUSTOM RACK, ASC STUDIO TRAPS, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
Bryston/Esoteric System: ESOTERIC C02-X PRE-AMP, D02-X DAC, G02-X CLOCK, BRYSTON 28B CUBED MONOBLOCK AMPS, BIT-15(2) AMR-DP777-SE DAC, SILENZIO, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
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  #5  
Old 12-22-2016, 09:19 PM
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Quote:
Originally Posted by Masterlu View Post
Leave em' in the dark; audio priorities come first!
Perhaps I should...there are still a few more shopping days left in the season, and I think a trio of Denalis would look GREAT under the tree, haha! "No, honey, really...this is the ONLY fix..."
__________________
Main Room

McIntosh C-2600 - Marantz AV 8802 - McIntosh -Mc820 Marantz 7055 (atmos amp)
ProJect Xtension 10 w/Koetsu Rosewood Standard
Mac Mini/Audirvana - Drobo 5D Media Server Drive - Cambridge Audio Azur BD 751 - Sonos Connect
Tyler Acoustics Decade D2 and Center w Danny Richie designed x-overs - REL S5's - KEF 160QL-160QR-130QR (surround/atmos)
Shunyata PS8 w/Defender - Shunyata and AudioQuest power cables - Shunyata and Audioquest Interconnects
Audio quest Oak Speaker cables (LCR)

Living Room

KEF LS 50 - Marantz NR 1506 - Sonos Connect

Master Suite and Garage

Sonos AMP and KEf 160 QR
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  #6  
Old 12-22-2016, 09:35 PM
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Quote:
Originally Posted by rjryan View Post
Perhaps I should...there are still a few more shopping days left in the season, and I think a trio of Denalis would look GREAT under the tree, haha! "No, honey, really...this is the ONLY fix..."
Absolutely, show her the alternative...

__________________
Ivan
FLORIDA
MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) PS AUDIO PPP(8) RGPC 1200(20) RGPC POLE PIG(4) JL GOTHAM SUBS(2) SONOS ZP90-W4S MOD, LUMAGEN RADIANCE SCALER, SONY VPH-G90U PROJECTOR, SVS SCISSOR LIFT, STEWART STUDIOTEK 120" MOTORIZED SCREEN, ASC ACOUSTIC PANELS & BASS TRAPS, CINEMA-TECH SEATING, WIREWORLD PLATINUM STARLIGHT HDMI, GOLD ECLIPSE CABLES & SILVER ELECTRA PC'S
Reference System: ACCUPHASE A200 MONOBLOCK AMPS, C3850 PRE-AMP, DP900 CD/SACD PRECISION TRANSPORT, DC901 PRECISION DIGITAL PROCESSOR, DG-58 DIGITAL VOICING EQUALIZER, T-1100 FM STEREO TUNER, PS520 POWER SUPPLY, SONOS ZP90-W4S MOD, HRS-SXR CUSTOM 4V-4V RACK w/ M3X 1921 SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S
CAPE COD

MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MS750(3) MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K01-X SE CD/SACD PLAYER, HT3F(2) XRT2K, XCS2K, XR27(2) OPPO-BDP95, PS AUDIO PPP(8) PUREPOWER 1050(4) RGPC 1200(15) JL GOTHAM SUBS(2) JL FATHOM F113 SUBS(4) SOUND ANCHOR SUB STANDS(2) LUMAGEN RADIANCE PRO SCALER, SONY VPH-G90U PROJECTOR, STEWART STUDIOTEK 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO, SONOS ZP90-W4S MOD, BRYSTON BHA-1, ASC ACOUSTIC PANELS & BASS TRAPS, FORTRESS SEATING, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S.
Analog Rig: CLEARAUDIO INNOVATION WOOD w/ OUTER RING & CLAMP, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, KLAUDIO RCM, HRS-MXR REFERENCE 4V RACK-GLOSS BLACK w/ M3X 1921 SHELVES, AESTHETIX RHEA SIG PHONO-PRE, PS AUDIO PPP, RGPC 1200, WIREWORLD PLATINUM ECLIPSE CABLES & PLATINUM ELECTRA PC'S
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP LOADED, 948 POWER CONDITIONER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, ESOTERIC GRANDIOSO P1/D1 STACK, G01X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO, HRS-SXR CUSTOM 2V-3V-2V RACK w/ M3X 1921 SHELVES, STILLPOINTS, SONUS FABER AIDA SPEAKERS IN RED VIOLIN FINISH, JL FATHOM F113(2) SOUND ANCHOR SUB STANDS(2) ASC ACOUSTIC PANELS & BASS TRAPS, GIK PICTURE PANELS, PS AUDIO P10, WIREWORLD PLATINUM CABLES & PLATINUM ELECTRA PC'S

Library System: ESOTERIC GRANDIOSO SYSTEM M1 MONOBLOCK AMPS(2), C1 LINESTAGE PRE-AMP, K1 CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E03 PHONO-PRE, SILENZIO, SONOS ZP90-W4S MOD, AERIAL ACOUSTICS 20T V2 SANTOS ROSEWOOD, AERIAL SW12 SUBS SANTOS ROSEWOOD w/ BASES(2), CANTON REFERENCE K3, DALI EPICON 8 RUBY MACASSAR, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, FURUTECH SILVER ARROWS PHONO CABLE, KLAUDIO RCM, SHUNYATA PS8, RGPC 1200(2) STEVE BLINN COMPLETE CUSTOM RACK, ASC STUDIO TRAPS, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
Bryston/Esoteric System: ESOTERIC C02-X PRE-AMP, D02-X DAC, G02-X CLOCK, BRYSTON 28B CUBED MONOBLOCK AMPS, BIT-15(2) AMR-DP777-SE DAC, SILENZIO, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WIREWORLD PLATINUM ECLIPSE IC'S & PLATINUM ELECTRA PC'S
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  #7  
Old 12-22-2016, 09:39 PM
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Quote:
Originally Posted by Masterlu View Post
Absolutely, show her the alternative...

__________________
Main Room

McIntosh C-2600 - Marantz AV 8802 - McIntosh -Mc820 Marantz 7055 (atmos amp)
ProJect Xtension 10 w/Koetsu Rosewood Standard
Mac Mini/Audirvana - Drobo 5D Media Server Drive - Cambridge Audio Azur BD 751 - Sonos Connect
Tyler Acoustics Decade D2 and Center w Danny Richie designed x-overs - REL S5's - KEF 160QL-160QR-130QR (surround/atmos)
Shunyata PS8 w/Defender - Shunyata and AudioQuest power cables - Shunyata and Audioquest Interconnects
Audio quest Oak Speaker cables (LCR)

Living Room

KEF LS 50 - Marantz NR 1506 - Sonos Connect

Master Suite and Garage

Sonos AMP and KEf 160 QR
Reply With Quote
  #8  
Old 12-22-2016, 10:18 PM
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Default Amp and Subs Humming All of a Sudden

That cabinet better have at arc flash protection!

Last edited by Cohibaman; 12-22-2016 at 10:26 PM.
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  #9  
Old 12-23-2016, 09:51 PM
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So, I didn't get to the breaker testing, but this morning the hum/buzz was barely audible in the subs or the amp.

Something outside our home? Darn weird.
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Main Room

McIntosh C-2600 - Marantz AV 8802 - McIntosh -Mc820 Marantz 7055 (atmos amp)
ProJect Xtension 10 w/Koetsu Rosewood Standard
Mac Mini/Audirvana - Drobo 5D Media Server Drive - Cambridge Audio Azur BD 751 - Sonos Connect
Tyler Acoustics Decade D2 and Center w Danny Richie designed x-overs - REL S5's - KEF 160QL-160QR-130QR (surround/atmos)
Shunyata PS8 w/Defender - Shunyata and AudioQuest power cables - Shunyata and Audioquest Interconnects
Audio quest Oak Speaker cables (LCR)

Living Room

KEF LS 50 - Marantz NR 1506 - Sonos Connect

Master Suite and Garage

Sonos AMP and KEf 160 QR
Reply With Quote
  #10  
Old 12-23-2016, 09:58 PM
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Cable is a likely source if you have it connected to a component that is somehow earthed to your audio gear.
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