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Zrock2-25th (Read 4453 times)
Delta 77
Senior Member
Posts: 57
Zrock2-25th
10/24/20 at 15:30:20
I’ve had my Zrock2 with full mods, for about 6-8 months now.
It’ definitely makes a delightful improvement in sonics..
Mine has always made a humming noise , even when I first plugged it in..
It’s not loud, but it is audible in the room when no music is playing..
It not a problem while listening to music in any way..
Pulling out of the system has been nearly impossible, because of the loss of sonics..
My question is does everyone’s Zrock2 make a humming noise..??
Probably wouldn’t be an issue, if the darn thing had an On/Off switch..!
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INNUOS-ZEN mk3(streamer)
HOLO-Spring3(dac)
DECWARE-Zrock2-25th
DENON-DP59L (TT)
DECWARE-ZP3
ARIC AUDIO-Passive pre
DECWARE-ZMA
TEKTON-Double Impact SE
TEKTON-Enzo sub x 2
PI AUDIO-UberBUSS
PIaudio/Hapa/Zenwave/TWL
DECWARE-CSP3-25th(HP amp)
ZMF ”Auteur”
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HockessinKid
Seasoned Member
Posts: 1143
Re: Zrock2-25th
Reply #1 -
10/24/20 at 15:49:10
Mine does not hum. I put a couple of rubber-sorbothane anti-vibration pads underneath the ZRock you might want to give them a try, they're inexpensive:
https://www.supplyhouse.com/DiversiTech-MP-2E-EVA-Anti-Vibration-Pad-2-x-2-x-7-8...
Also, some have found interior parts close to the top of the unit, resulting in a slight buzz or hum. I believe they placed a self adhesive thin layer of rubber underneath to eliminate the problem.
HK
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Nottingham Interspace TT w/ Audio Technica AT-OC9XML cart & Modwright PH 9.0XT phono preamp OR MWI modded Cambridge CNX V2 > CSP3-25th A preamp > ZMA-25th A amp > PI Audio UberBUSS > Caintuck Audio Lii15 Magnum speakers > SDFB's > SRA & ZenWave cables
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Archie
Seasoned Member
Posts: 2731
Re: Zrock2-25th
Reply #2 -
10/24/20 at 17:41:30
Mine is absolutely quiet both before and after the anniversary mods. I don't know what's inside these but I'm surprised there is anything that can hum. Have you tried different tubes?
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ZLC
Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
Homemade Big Betsy Speakers (F15s)
Silver Cabling
DIY Isolation platforms under amps & TT.
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Delta 77
Senior Member
Posts: 57
Re: Zrock2-25th
Reply #3 -
10/24/20 at 18:46:07
Sounds like I should give Steve a call on Monday..
I’ve been living with it..
It’s really not that annoying, and I thought it might fix itself ..
Not to mention, I am going to have a hard time listening to my system without it..
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INNUOS-ZEN mk3(streamer)
HOLO-Spring3(dac)
DECWARE-Zrock2-25th
DENON-DP59L (TT)
DECWARE-ZP3
ARIC AUDIO-Passive pre
DECWARE-ZMA
TEKTON-Double Impact SE
TEKTON-Enzo sub x 2
PI AUDIO-UberBUSS
PIaudio/Hapa/Zenwave/TWL
DECWARE-CSP3-25th(HP amp)
ZMF ”Auteur”
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ScottNC
Seasoned Member
Posts: 336
Re: Zrock2-25th
Reply #4 -
10/24/20 at 19:45:50
I think you will find that Steve can help you solve the issue without having to send it in, he did with mine.
Good luck, it would be a shame to have to go without it, at least it would be for me and my system.
Scott
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TORII MKIV-25th,ZBIT,ZROCK2-25th,ZTPRE-25th,ZLC,DNA2's, REL S/3 SHO
MyTek Brooklyn DAC+,Sonore ultraRendu LinearPS,sonicTransport APi7 4TB
Woo WA6, Sennheiser HD660s
RoomTreatments,LineFeed,DHC1’s,DSR’s,ZENST,TriodeWireLabs,TimberNation Maple Plats
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will
Seasoned Member
Posts: 3014
Re: Zrock2-25th
Reply #5 -
10/24/20 at 20:22:41
Hey Delta,
Without going inside yet, I guess you checked to see if it is humming on both channels? Especially if only one channel, could it be an IC on that channel?
Or even if both channels, is it possible one IC pair could be picking up noise from close transformer proximity or from not crossing power cables at a hard angle? Along with Archie's thought about tubes, I wonder if you have a spare set of ICs you can try.
And last, have you tried a different power cord?
If you tried these and more and nothing worked I think that would help Steve help you.
Good luck!
Will
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All Modified: PSA-P5>DIY Strip/Shunyata Defender>RevolutionMacMini/Amarra-KTE Singxer/Gustardx20pro/ZBIT/ZR2/CSP3>LaoChen 300B/845>Omega SAHOMs/AudioSmile Tweeters,SVS Micro3000>Pi PCs and DIY PCs, ICs, USB, I2S, Speaker>SR and aluminum w ball bearing feet +
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Delta 77
Senior Member
Posts: 57
Re: Zrock2-25th
Reply #6 -
10/24/20 at 20:50:20
Hi Lon & Will,
Thanks for everyone’s feedback..
I’ve made some changes with my equipment over the last year..
Running dedicated circuit, PI audio outlets, Preamps, RCA & power cables, amps (just swapping equipment per season or for fun)..
The Zrock2 has always made the same noise from day one..
There is No noise in the system/speakers, my system is very very quiet..
The unit itself makes some sort of noise..
My uneducated guess would be some part or parts inside are making a vibration noise..
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INNUOS-ZEN mk3(streamer)
HOLO-Spring3(dac)
DECWARE-Zrock2-25th
DENON-DP59L (TT)
DECWARE-ZP3
ARIC AUDIO-Passive pre
DECWARE-ZMA
TEKTON-Double Impact SE
TEKTON-Enzo sub x 2
PI AUDIO-UberBUSS
PIaudio/Hapa/Zenwave/TWL
DECWARE-CSP3-25th(HP amp)
ZMF ”Auteur”
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will
Seasoned Member
Posts: 3014
Re: Zrock2-25th
Reply #7 -
10/24/20 at 21:14:21
Quote:
There is No noise in the system/speakers, my system is very very quiet..
The unit itself makes some sort of noise.
Oh I understand now. That does seem to narrow it down to the unit, though I have had noisy tubes cause my CSP3 or Torii to hum more. I have never had a power cord ground issue, but being possible even with new cables, thought it could be worth a try.
Also I used to use an Uber, and though good sounding, still got some transformer hum here. Nice your system is otherwise so quiet.
Hope you get it solved soon!
Will
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All Modified: PSA-P5>DIY Strip/Shunyata Defender>RevolutionMacMini/Amarra-KTE Singxer/Gustardx20pro/ZBIT/ZR2/CSP3>LaoChen 300B/845>Omega SAHOMs/AudioSmile Tweeters,SVS Micro3000>Pi PCs and DIY PCs, ICs, USB, I2S, Speaker>SR and aluminum w ball bearing feet +
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Archie
Seasoned Member
Posts: 2731
Re: Zrock2-25th
Reply #8 -
10/24/20 at 21:24:10
This picture is from the product page. There does seem to be a transformer inside but it's hard to see for sure.
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ZROCK4.jpg
ZLC
Technics 1200G TT w/ Ortofon Jubilee MC cart
ZMC1
ZP3 (25th A Mods)
ZR2 (25th A Mods)
CSP3 (25th A mods)
ZMA (25th A mods)
Homemade Big Betsy Speakers (F15s)
Silver Cabling
DIY Isolation platforms under amps & TT.
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Stefan
Seasoned Member
Posts: 119
Re: Zrock2-25th
Reply #9 -
10/25/20 at 19:08:41
I had that hum too, this is the thread where I described it:
https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1546294101
My fix was a little piece of rubber between the transformer and the case surrounding it.
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- Stefan
---------------------
Rega rp6, Lounge Audio phono pre-amp, Lonely Raven PC, T+A DAC 8 DSD, ZBIT, ZROCK2+25th, SE84UFO25, Torii IV, Denon AVC-1SE, Infinity IRS Beta, Tannoy Cheviot, ERRx, Tiny Radials, Woo WA-3, Sennheiser HD800S
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Delta 77
Senior Member
Posts: 57
Re: Zrock2-25th
Reply #10 -
05/26/21 at 19:34:28
"I had that hum too, this is the thread where I described it:
https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1546294101
My fix was a little piece of rubber between the transformer and the case surrounding it."
This is what I did..!
I just put a piece of foam rubber in-between the Transformer and the bottom plate..
No more noise..!
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INNUOS-ZEN mk3(streamer)
HOLO-Spring3(dac)
DECWARE-Zrock2-25th
DENON-DP59L (TT)
DECWARE-ZP3
ARIC AUDIO-Passive pre
DECWARE-ZMA
TEKTON-Double Impact SE
TEKTON-Enzo sub x 2
PI AUDIO-UberBUSS
PIaudio/Hapa/Zenwave/TWL
DECWARE-CSP3-25th(HP amp)
ZMF ”Auteur”
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