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Power Conditioners Voltage regulation to AC Regeneration

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Old 12-22-2016, 08:35 PM
rjryan rjryan is offline
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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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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
rjryan rjryan is offline
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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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  #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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Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1X/D1X STACK, G1X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES

Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1’s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QR’s, WW PLATINUM CABLES
Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS(4), BRYSTON BHA-1 HEADPHONE AMP, SHUNYATA DENALI 6000/S v2(2) EVEREST 8000 POWER CONDITIONER(2) ALTAIRA CG & SG HUBS, AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES
Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3’s, CANTON REF K5’s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
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Old 12-22-2016, 09:19 PM
rjryan rjryan is offline
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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..."
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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...

__________________
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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) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES
Reference System: ACCUPHASE A300 AMPS, C3900 PRE-AMP, DP1000 CD/SACD TRANSPORT, DC1000 DIGITAL PROCESSOR, DG-68 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES
CAPE COD

MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM v2 SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES
Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, BRYSTON BHA-1 HEADPHONE AMP, WW PLATINUM CABLES
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1X/D1X STACK, G1X RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES

Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1’s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QR’s, WW PLATINUM CABLES
Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS(4), BRYSTON BHA-1 HEADPHONE AMP, SHUNYATA DENALI 6000/S v2(2) EVEREST 8000 POWER CONDITIONER(2) ALTAIRA CG & SG HUBS, AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES
Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3’s, CANTON REF K5’s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
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  #7  
Old 12-22-2016, 09:39 PM
rjryan rjryan is offline
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Quote:
Originally Posted by Masterlu View Post
Absolutely, show her the alternative...

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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
rjryan rjryan is offline
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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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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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