Powering a pre amp....
kevhed72
Posts: 5,054
Curious how many of you run your pre through a power conditioner... as well as, what type of power cord do you use... in terms of brand and awg. I recently upgraded from a stock power cord, and plugged directly into the outlet, only to experience the dreaded ground loop hum...
Comments
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Presently using Audience PowerChord e cables and Audience conditioner. Interesting that you have a hum appear just from changing away from a stock cable. Does it disappear when you substitute the stock cord back into the system?integrated w/DAC module Gryphon Diablo 300
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New cable have a ground pin that wasn't there before or is it a shorter cable that's making a quicker path to ground than the original configuration?Oh, Listen here mister. We got no way of understandin' this world. But we got as much sense of this bird flyin in the sky. Now there is a lot that bird don't know, but it don't change the fact that the world is happening to him all the same. What I am tryin to say is, is that the course of your life, well its changing, and you don't even see it- Forest Bondurant
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are you routing cable in proximity or crossing over a signal cable?My New Year's resolution is 3840 × 2160
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He's not using the power conditioner with the new cord. Chances are the ground loop hum was always there, but once he moved away from it and went directly into the outlet.....hum.
Plug it back into the conditioner.....or try a cheater plug on it for 2 bucks.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
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lsi 9's -
I have a coupe of MIT network boxes on ICs which are probably too close to an outlet and a power cord. It's my understanding it's better not to cross ICs and power cords at all....or if you had to, don't run them parallel right next to each other.....I forget.Mikey081057 wrote: »are you routing cable in proximity or crossing over a signal cable?
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More than likely, too many grounds in one spot. Try separating to another outlet if you can or lift the ground with a cheater plug. Also, it may benefit some to change out the wall outlet if it's still that old construction grade stuff.
Another cheap way is to run a wire from a screw on the pre to another piece you know has no hum and grounded well. Hum is rarely due to the cable itself, unless it's of very cheap quality.HT SYSTEM-
Sony 850c 4k
Pioneer elite vhx 21
Sony 4k BRP
SVS SB-2000
Polk Sig. 20's
Polk FX500 surrounds
Cables-
Acoustic zen Satori speaker cables
Acoustic zen Matrix 2 IC's
Wireworld eclipse 7 ic's
Audio metallurgy ga-o digital cable
Kitchen
Sonos zp90
Grant Fidelity tube dac
B&k 1420
lsi 9's -
I run my Cary Pre and Jolida CDP through a APC power conditioner using Pangea AC 14SE Power Cables. Dead quiet.
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I have a coupe of MIT network boxes on ICs which are probably too close to an outlet and a power cord. It's my understanding it's better not to cross ICs and power cords at all....or if you had to, don't run them parallel right next to each other.....I forget.Mikey081057 wrote: »are you routing cable in proximity or crossing over a signal cable?
Don't cross the streams....My New Year's resolution is 3840 × 2160
Family Room| Marantz AV7704| Usher Dancer Mini - 2 DMD Mains |Usher Dancer Mini-x DMD's Surrounds | Usher BE-616 DMD Center | SVS Ultra Rear Surrounds | Parasound Halo A21 | Parsound Halo A52+ | MIT Shotgun S3's | Dual SVS SB 4000 Ultras | Oppo UDP 203 | Directv Genie HD DVR | Samsung 75" Q8 QLED | PSAudio Stellar GCD | Mytek Brooklyn DAC+ | Lumin U1 Mini | HP Elite Slice PC | ROON'd for life |
ManCave: HT:Polk LSiM 706VR3 LSiM 703's LSiM 702's|| Marantz AV7002 AV PrePro Sunfire TGA-7401| Sony PS4 Pro| Sony PS4 Pro|SVS PB13 Ultra| Oppo UDP 203 | Music Hall MMF 5.3se TT w/ Soundsmith Carmen | Samsung 55" SUHD TV | Sony PS4
Patio | Polk Atrium 8's | Yamaha R-N303BL |
Office BlueSound Node| KEF LS50 | Peactree Nova 125SE |
Bedroom | Focal 905's | Chromecast Audio |
Garage | Polk Monitor 5B's
Closet Yamaha M80 | 2 Polk MP3K subs| Yaqin MC100B with Shuguang Treasures KT 88's & CV181Z's | Tesla E83CC's | Marantz 2252B | Marantz 2385 |Polk SDA SRS 2.3 | LSiM 705's | -
Mikey081057 wrote: »
I have a coupe of MIT network boxes on ICs which are probably too close to an outlet and a power cord. It's my understanding it's better not to cross ICs and power cords at all....or if you had to, don't run them parallel right next to each other.....I forget.Mikey081057 wrote: »are you routing cable in proximity or crossing over a signal cable?
Don't cross the streams....
How close is too close.... -
if you must have them close cross them at 90 degrees
