AudioAficionado.org  

Go Back   AudioAficionado.org > Turntables & Vinyl > Turntables & Tonearms

Turntables & Tonearms Where Analog still Rules

Reply
 
Thread Tools Display Modes
  #11  
Old 06-11-2009, 11:00 PM
jdandy's Avatar
jdandy jdandy is offline
Merry Christmas to all



 
Join Date: Apr 2009
Location: North Central Florida
Posts: 53,224
Default

Serge.......Yep. I was moving the balanced cables from the variable output, where I had been driving the MC501's direct. Got side tracked, came back, thought I was done, popped in a CD, and all hell broke loose. Thank God I took my blood pressure pill that morning. Happy to say Power Guard worked.
__________________
Dan



STUDIO - McIntosh C1000C/P, MC2301 (2), MR88, Aurender N10, Esoteric K-01X, Shunyata Sigma spdif digital cable, Sonos Connect, PurePower 2000, Stillpoints, Furutech Flux 50, Michell Gyro SE, Michell HR Power Supply, SME 309, Ortofon Cadenza Black, Wireworld, Sonus faber Amati Anniversario
LIVING ROOM - McIntosh C2300, MC75 (2), MR85, Magnum Dynalab 205, Simaudio MOON Neo 260D-T, Schiit Audio Yggdrasil, Aurender N100H, Shunyata Sigma USB cable, Micro Seiki DD40, Ortofon Cadenza Blue, Nakamichi BX-300, Sony 60ES DAT, PS Audio P10, Furutech Flux 50, Sonos Connect, Stillpoints, Wireworld, Kimber, PMC EB1i, JL Audio f113
VINTAGE - McIntosh MA230, Tandberg 3011A tuner, Olive 04HD, Sony DTC-59ES DAT, McIntosh 4300V, JBL 4312A
Reply With Quote
  #12  
Old 06-11-2009, 11:03 PM
1KW 1KW is offline
Guest
 
Join Date: Apr 2009
Location: Naples, Fl & Long Beach Island, NJ
Posts: 7,634
Default

The guy up the street on his ham radio is running a 2 kw linear amplifier and yagi beam pointed at your house
Reply With Quote
  #13  
Old 06-14-2009, 12:58 PM
PHC1 PHC1 is offline
Guest
 
Join Date: Apr 2009
Location: Pa
Posts: 23,609
Default

I think the ground was a bit loose on my phono stage. I tightened it up and have not heard any more strange "broadcasts" through my speakers.
Reply With Quote
  #14  
Old 06-14-2009, 08:45 PM
80B's Avatar
80B 80B is offline
Listener in Training


 
Join Date: Apr 2009
Location: Old City
Posts: 2,568
Default

Quote:
Originally Posted by Masterlu View Post
Serge Marconi, maybe you are picking up a SETI broadcast!
Maybe they were illegal aliens!
__________________
Sources: Vinyl: Clearaudio Innovation Wood turntable with 9" Universal tonearm, Da Vinci V2 cartridge, Stillpoints SS & Stillpoints clamp, McIntosh MVP 901, Apple Mac mini via Benchmark DAC 1, Aurender N100C via Schiit Yggdrasil
Control: McIntosh C1100, Mcintosh MX151
Power: Mcintosh MC2301s (front), McIntosh MC501 (center), Mcintosh MC402 (rear)
Speakers: Sonus Faber Amati Futura (front and back), SF Vox center
Power/connections: PS Audio Power Port receptacles, RGPC 400 pro (2) WireWorld interconnects and speaker cable
Reply With Quote
  #15  
Old 06-15-2009, 11:47 AM
EasyRiderNYC EasyRiderNYC is offline
Senior Member
 
Join Date: Apr 2009
Location: New York City
Posts: 118
Default

Quote:
Originally Posted by PHC1 View Post
I think the ground was a bit loose on my phono stage. I tightened it up and have not heard any more strange "broadcasts" through my speakers.
I was running without a ground for a while since my arm is "self Grounded", then I started hearing an odd buzzing type noise and other ghosts. Took a ground from the chassis of the external PSU to the ground on the pre and all is fine again.

I really need to invest some time in cable management, looks like a den of snakes.
Reply With Quote
  #16  
Old 06-15-2009, 12:20 PM
gregswaim gregswaim is offline
Guest
 
Join Date: Apr 2009
Posts: 2,444
Default

Quote:
Originally Posted by 80B View Post
Maybe they were illegal aliens!
Your papers please comrade.....
Reply With Quote
  #17  
Old 06-29-2009, 02:25 PM
jetblack's Avatar
jetblack jetblack is offline
Love Those Tunes
 
Join Date: Apr 2009
Location: Jasper, GA
Posts: 1,252
Default

Quote:
Originally Posted by PHC1 View Post
Help me sort this out. A few times I've noticed when the table is not playing records, I hear some radio or some other source of pollution through my speakers. Sounds like RFI to me,
If I mute the Bellari phono stage, it disappears.. So, I guess it's not the cables after the phono stage that are picking it up and not the preamp. So I guess it must be the tonearm cables?
Un-shielded cables can potentially act as antennas to all the RF that is flying around us, depending on the freq and the length of cable. Welcome to the real world.
__________________
MX136, MC501s, MC402, MCD500
RtR 300Ds, JL Fathom F112, Mirage OM-C3, JBL 2600s
Dual CS 606, Ortofon 2M Black
Tandberg TD20A, Harmon Kardon HK 400xM
PPP, Power Port, WW Ag Eclipse IC's & Speaker Cables, WW Ag Electra PC's
Reply With Quote
  #18  
Old 05-22-2014, 03:39 PM
Soundserge Soundserge is offline
Guest
 
Join Date: Apr 2013
Posts: 259
Default

Documenting my experience here in the event someone will benefit from it. A wise person once said (paraphrasing): Experience is a cruel teacher. It gives you the exam first and the lesson afterwards.

I had been battling a radio interference problem out of the left speaker (Dynaudio Contour 1.3SE) driven by Jeff Rowland Model 2 power amp and a Meridian MS 600 for a while, then a Meridian 818v2 Reference Audio Core DAC/preamp. When I say radio interference, I mean I could hear actual music and DJs talking from my listening position when I wasn't playing any music. If I held my ear up to the tweeter, I could sometimes make out what song was playing. I live close to a radio tower, so I mostly chalked it up to tough luck, but I did try all sorts of things. In-wall power filter, power conditioner, different pre-amp, etc.

In another moment of desperation and particularly bad music playing that wasn't in my collection, I read the sensible advice to debug this problem, "starting from the back." So I pulled the XLR connectors of my Cardas Golden Cross balanced cable from the back of my power amp and plugged in XLR-RCA adapters that came with the Rowland. I turned on the power amp with speakers attached, no pre-amp. Silence. So far so good.

Next, I ran a spare RCA interconnect cable from the preamp to the poweramp with RCA-XLR adapters. Silence again. Wait, this pedestrian Audioquest RCA interconnect is more silent than my fancy Cardas cable? It had never occurred to me that an interconnect could be the problem, but I borrowed some other XLR interconnects from my dealer (happened to be Analysis Plus). Silence.

Plugged Cardas cable back in to make sure I wasn't nuts. Katy Perry. (don't pin me down on this, but something Pop-y). Tried one Cardas lead and one Analysis Plus lead. More unwanted radio noise.

So, I submitted service request to Cardas to have the cables looked at and, if necessary, re-terminated. Cardas graciously re-terminated my cables free of charge (trust me, I've had this cable a long, long time) and I now have a dead silent setup once again. Very impressed with Cardas here.

TL;DR: Loose solder picking up radio signal like a filling in a molar? Something with ground floating or not floating? I don't know, and I'm not an EE. But in my case there was something about my balanced interconnect that caused radio interference to be audible on my rig. Work your way backwards and don't rule anything out.

For what it's worth,

Soundserge
Reply With Quote
  #19  
Old 05-25-2014, 11:54 AM
MtnHam's Avatar
MtnHam MtnHam is offline
Member
 
Join Date: Jul 2012
Location: Northern California Wine Country
Posts: 282
Default

Since muting the phono stage eliminates the problem, the fault is due in inadequate shielding. Placing the Bellari inside a Faraday cage should solve it.

http://en.wikipedia.org/wiki/Faraday_cage
The reception or transmission of radio waves, a form of electromagnetic radiation, to or from an antenna within a Faraday cage is heavily attenuated or blocked by the cage.
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Audioaficionado.org tested by Norton Internet Security

All times are GMT -4. The time now is 02:48 PM.



Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
©Copyright 2009-2023 AudioAficionado.org.Privately owned, All Rights Reserved.
Audio Aficionado Sponsors
AudioAficionado Subscriber
AudioAficionado Subscriber
Inspire By Dennis Had
Inspire By Dennis Had
Harmonic Resolution Systems
Harmonic Resolution Systems
Wyred4Sound
Wyred4Sound
Dragonfire Acoustics
Dragonfire Acoustics
GIK Acoustics
GIK Acoustics
Esoteric
Esoteric
AC Infinity
AC Infinity
JL Audio
JL Audio
Add Powr
Add Powr
Accuphase - Soulution
Accuphase - Soulution
Audio by E
Audio by E
Canton
Canton
Bryston
Bryston
WireWorld Cables
WireWorld Cables
Stillpoints
Stillpoints
Bricasti Design
Bricasti Design
Furutech
Furutech
Shunyata Research
Shunyata Research
Legend Audio & Video
Legend Audio & Video