Welcome, Guest. Please Login or Register
Decware Audio Forums
11/22/14 at 10:32:57


Pages: 1 2 
Send Topic Print
Hum (Read 8674 times)
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7801
Re: Hum
Reply #15 - 07/10/11 at 17:54:57
 
I just plug my Premier directly into the isolation transformer, and I plug everything else into the Premier. Works fabulously for me, but then again I don't have quite the power requirements that your system will have! Smiley
Back to top
 
 

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
Pale Rider
Seasoned Member
****




Posts: 1272
Re: Hum
Reply #16 - 07/10/11 at 19:20:13
 
Lon, what capacity is your isolation transformer? I cannot remember if you once identified it as a 250W or 500W.
Back to top
 
 

Decware: Ultra | Torii MKIII [2] | SE84ZS | Taboo MkIII Sources: Synology 1812+ | Baetis Revolution | PWD DAC MKII | Lumin Network Player | Mytek 192 | Oppo 105 DSP: DEQX Mate | Emotiva Outputs: ERR [6] + Servo Subs | LCD-2 & other cans
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7801
Re: Hum
Reply #17 - 07/11/11 at 01:39:39
 
It's 500.
Back to top
 
 

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7801
Re: Hum
Reply #18 - 07/12/11 at 21:59:37
 
PR, I have to thank you for asking me about the isolation transformer. I had just without thinking connected the Premier to the transformer, but for the life of me when I think about it I can't see any benefit possible by doing so. So I just plugged the Premier directly into the wall (using the receptacle that Steve sent me with a power cord), taking the isolation transformer out of the pathway.

Okay, there was some drama because somehow my MAC power cable that I had going to the tv didn't survive the change over. . . After calming myself as much as I could when it seemed my tv refused to power up, I tried another power cord and we're back in business again. I'm really really reluctant to make any pronouncements abut the sound yet because in my experience when you shut down my source components and unplug them it can be as much as a half day to a day before they really are "all they can be" again. but, sure sounds great, possibly going to sound better than before. And that transformer WAS introducing some THD according to the metering on the Premier. I've got the heftiest power cord in the house on the Premier, a PS Audio xStream Statement. That's a lot of copper. I'm certain this is a better arrangement.

Thanks for making the question. That and an older post I read today by Radcha made me consider and make the change. I guess I've been a twerp for a while listening this way. Rad mentioned the transformer may gave his system an "opaque and harsh" sound. That intrigued me, what is "opaque and harsh" and got me suspecting that there may be a sort of signature the transformer was passing along. And strangely enough a bit of a sound that might be opaque and harsh went away. Wink

These darned amps and speakers let you hear everything! Smiley It contributes to the madness. Smiley
Back to top
 
« Last Edit: 07/12/11 at 22:10:07 by Lon »  

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
Pale Rider
Seasoned Member
****




Posts: 1272
Re: Hum
Reply #19 - 07/13/11 at 03:19:12
 
Somewhat to my chagrin, I forgot that I had thrown a bid on a used PPP on fleabay. It was a trade-in with an audio dealer by someone who was trading up to the more current models. Anyway, it's supposedly in mint condition, and it's in black, and I wanted another one anyway. And it was a few bucks less than the B-stock on Music Direct. We shall see.
Back to top
 
 

Decware: Ultra | Torii MKIII [2] | SE84ZS | Taboo MkIII Sources: Synology 1812+ | Baetis Revolution | PWD DAC MKII | Lumin Network Player | Mytek 192 | Oppo 105 DSP: DEQX Mate | Emotiva Outputs: ERR [6] + Servo Subs | LCD-2 & other cans
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7801
Re: Hum
Reply #20 - 07/13/11 at 03:33:06
 
You desperately need to win. After all, it's been so long since you had new stuff!

Cheesy
Back to top
 
 

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
Pale Rider
Seasoned Member
****




Posts: 1272
Re: Hum
Reply #21 - 07/13/11 at 19:49:36
 
Quote:
You desperately need to win. After all, it's been so long since you had new stuff!


That's exactly what I told my wife! Must have worked. Now I have a black and a silver one.
Back to top
 
 

Decware: Ultra | Torii MKIII [2] | SE84ZS | Taboo MkIII Sources: Synology 1812+ | Baetis Revolution | PWD DAC MKII | Lumin Network Player | Mytek 192 | Oppo 105 DSP: DEQX Mate | Emotiva Outputs: ERR [6] + Servo Subs | LCD-2 & other cans
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7801
Re: Hum
Reply #22 - 07/13/11 at 19:54:35
 
You have a wonderful wife! Congratulations!

The excitement must be building. . . .
Back to top
 
 

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
ski bum
Seasoned Member
****




Posts: 179
Re: Hum
Reply #23 - 10/29/11 at 16:31:33
 
Personally, when it comes to the hum issue, I cheat.  I primarily use my Decware amps in bi-amp configuration driving the horns of my Klipsch speakers.  No hum whatsoever, as it's completely filtered out.  No restrictions on dynamics, wheather it's Mahler or Metallica.

Even run full range with the Zens, the hum is only noticable within a couple feet of the speakers (pretty sensitive at ~99db/w).  Hum has never been a real concern or prevented the goosebumps from happening.
Back to top
 
« Last Edit: 10/29/11 at 16:34:07 by ski bum »  
  IP Logged
nico
Senior Member
***




Posts: 88
Re: Hum
Reply #24 - 10/31/11 at 00:00:03
 
It's the only thing that bothered me for a few weeks...after that I accepted it as just the less desired side of a single ended design tube amp combined with a pair of 104Db sensitive Klipsch horns.
The magical listening-experience this combination produces makes me forget [accept] the hum you are talking about.
I went all the way finding out where it comes from... it's the amp.
After switching on, it starts after say eight-to-ten seconds, and is only noticable when the music is stopped and you listen for it.
Like mentioned before; don't sell this amp as you might regret it later.
Just my 2cents.
Nico
Back to top
 
 
  IP Logged
Pages: 1 2 
Send Topic Print