Welcome, Guest. Please Login or Register
Decware Audio Forums
05/29/22 at 00:46:11†




Pages: 1
Send Topic Print
Hum from the ZROCK, what to do? (Read 4194 times)
Stefan
Seasoned Member
****




Posts: 116
Hum from the ZROCK, what to do?
12/31/18 at 22:08:21
 
Hi,
my ZROCK2 25th has a slight hum coming from the device itself. When I press a little on the top of the device it goes back to a very minimal level.
Anyone else experienced that?
Back to top
 
 

- 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
  IP Logged
Rivieraranch
Seasoned Member
****




Posts: 1925
Re: Hum from the ZROCK, what to do?
Reply #1 - 01/01/19 at 18:10:57
 
Something is probably shook loose in there.
Back to top
 
 

MINI TORII ANNIVERSARY MODIFIED; ZROCK2; MONOLITH SPEAKERS; TECHNICS SL1200MK2 KAB MODDED TT; ONKYO 6 DISC CD; MARANTZ 2226B; SCHIIT MULTIBIT DAC; SENNHEISER HD-580s
55   IP Logged
Stefan
Seasoned Member
****




Posts: 116
Re: Hum from the ZROCK, what to do?
Reply #2 - 01/12/19 at 17:17:00
 
In case you guys experience the same, here my fix: everything was nice and tight in there, but the transformer seemed to have touched the bottom plate and caused the hum, so I put a bit of heat resistent rubber between the transformer and the bottom plate, now it is whisper quite Smiley
Back to top
 
 

- 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
  IP Logged
Rivieraranch
Seasoned Member
****




Posts: 1925
Re: Hum from the ZROCK, what to do?
Reply #3 - 01/13/19 at 13:52:56
 
Saved yourself from having to ship it back to the factory.
Back to top
 
 

MINI TORII ANNIVERSARY MODIFIED; ZROCK2; MONOLITH SPEAKERS; TECHNICS SL1200MK2 KAB MODDED TT; ONKYO 6 DISC CD; MARANTZ 2226B; SCHIIT MULTIBIT DAC; SENNHEISER HD-580s
55   IP Logged
Stefan
Seasoned Member
****




Posts: 116
Re: Hum from the ZROCK, what to do?
Reply #4 - 01/13/19 at 17:38:37
 
Indeed!

Steve, if you are reading this thread, maybe something to consider doing as a default in new builds.
Back to top
 
 

- 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
  IP Logged
ScottNC
Seasoned Member
****




Posts: 333
Re: Hum from the ZROCK, what to do?
Reply #5 - 02/02/19 at 18:12:48
 
Steven,
I have to modify my original post below, my hum was coming through my speakers, not from the unit itself, although with some pressure on the top it mostly went away, I pulled the bottom and put in 1 thin layer of foam (old Craftsman tool chest liner) and it now has significantly reduced the hum, I'm writing the small remaining noise to the Sony until further notice.  :)

Just got my ZROCK2 25th back and have the same hum, I figured it was because of my running it into my SonyHAP1s while my MKIV is being modded. I'm going to try your fix as we speak. Exactly the same thing, when I press on the top it goes away! Glad you got it sorted, I hate shipping stuff out unless absolutely necessary. I'l follow up.

Best,
Scott
Back to top
 
 

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,DHC1ís,DSRís,ZENST,TriodeWireLabs,TimberNation Maple Plats
  IP Logged
TK78
Verified Member
**




Posts: 11
Re: Hum from the ZROCK, what to do?
Reply #6 - 09/09/19 at 15:18:45
 
I just sent my unit back because of a hum coming from the speakers. †It was a pretty loud hum. †Got considerably worse after a few days. †It was a new unit.
Back to top
 
 
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. Dick

Posts: 19510
Re: Hum from the ZROCK, what to do?
Reply #7 - 09/09/19 at 15:57:50
 
That's.a shame. Every time I've had a hum from a Decware unit it's turned out to be a hum from elsewhere, though very difficult at times to locate. More often than not it's the location of the unit in regards to power cables, even though I use shielded cabling. Hope it's a fast turnaround with a cure.
Back to top
 
 

HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th x2, CSP3-25th.Taboo Mk IV; Rega RP3 w all GrooveTracer mods PS Audio: PST+DSD,P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkr cbls;Mapleshade:Samson V3;;VooDoo:Cremona+Amati intrcncts, Iso-Pods;headphones:PM1,HD800S,ZMF Ori
  IP Logged
TK78
Verified Member
**




Posts: 11
Re: Hum from the ZROCK, what to do?
Reply #8 - 09/09/19 at 16:16:51
 
Yeah, I agree.  I tried it on a buddies system and got same results.
Back to top
 
 
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. Dick

Posts: 19510
Re: Hum from the ZROCK, what to do?
Reply #9 - 09/09/19 at 17:43:53
 
Well, you should get a quick turnaround. Hoping for a quick return.
Back to top
 
 

HR-1,ZTPRE,ZBIT,ZROCK2,SE84UFO3-25th x2, CSP3-25th.Taboo Mk IV; Rega RP3 w all GrooveTracer mods PS Audio: PST+DSD,P15,NPC,PowerBases,AC-12 pwr cbls, Reference spkr cbls;Mapleshade:Samson V3;;VooDoo:Cremona+Amati intrcncts, Iso-Pods;headphones:PM1,HD800S,ZMF Ori
  IP Logged
cave
Verified Member
**




Posts: 16
Re: Hum from the ZROCK, what to do?
Reply #10 - 09/10/19 at 05:50:45
 
One thing I will say about the ZROCK2, at least in my system, it is quiet as a mouse and adds 0 noise.

Inside there is considerable grounding, and it's pretty solid ground connections IMO.
Back to top
 
 
  IP Logged
Pages: 1
Send Topic Print