LOL.
FINALLY!!
I have found the source of my hum issues. The remote ceiling fan speed/light dimmer switches.
Thanks!!
FINALLY!!
I have found the source of my hum issues. The remote ceiling fan speed/light dimmer switches.
Thanks!!
Amplifier Hum - A Problem Solved
I would like to add this post by Wayner, a member of Audio Circle. This was apparently the cause of the OPs hum/buzz problem. >> Re: Hum whenever preamp and amp put in system...Help! « Reply #25 on: 16 Jul 2014, 02:45 pm » Quote: "I have an FM tuner, that when turned on, will make my systems hum, because the transformer in the FM tuner is poorly designed/poorly shielded. I too, was fighting a hum issue, thinking it was caused by dirty AC or poor interconnects or something else related to a ground loop. The answer was distance. Moving the FM tuner away from the amp and preamp solved the problem. The tuner's transformer was creating a larger then normal magnetic field, and that field penetrated my preamp and induced hum. This may be the cause of the hum for you. Perhaps your amplifier's transformer is affecting your preamp, or your preamp's transformer is affecting your power amp. My suggestion is to separate the 2 much farther then you have them now, even if that means using a 2 meter (or longer) interconnect to accomplish this. I have a semi-high degree of confidence that your hum is caused by EMF." End of quote. OPs later response, Re: Hum whenever preamp and amp put in system...Help! « Reply #26 on: 16 Jul 2014, 09:38 pm »Wayner, Quote: "You are my hero! After several years of this quagmire, it has been solved. Moving my amp as far away from the preamp, and as far away from the outlets and electric panel has solved the issue! This has escaped 3 electricians, countless audiophiles, and tens of hours with me getting increasingly frustrated. THANK YOU!!!!!!!!!!!!!!!!! When surveying the landscape I realize that there is essentially an equilateral triangle with the 2 base corners representing my 2 electrical panels in the home and the apex represents a confluence of 3 separate circuits converging at that point. Whether or not moving the components out of that is the reason for solution, I'm thoroughly relieved. Thank you all for your help! Special thanks to Wayner of course but again also for Dave E, Tom S, Frank V A, Roger M, and everyone else that I've not had the pleasure of meeting in person or via telephone conversations. I'm indebted to you all." David schw06 http://www.audiocircle.com/index.php?topic=127372.20 |
Hum Busters used to be relatively common gadgets. They block DC, which is the usual cause of buzzing transformers. I have a Channel Island XDC2, which totally solves this problem: http://www.ciaudio.com/products/XDC2 Unfortunately, its been discontinued. I'd encourage anyone with this problem to locate this device or a comparable one. |
Dedicated lines for your audio equipment would eliminate line noise from lights and other appliances. Another annoying source of hum is from cable T.V. outlets used with home theater equipment (RFI). I have been able to eliminate RFI from my TV cable by switching to Verizon FIOSS. The signal is carried by light waves. Evidently, RFI is not an issue with FIOSS. The slight, ever present hum that I had been trying to kill for years, but could only suppress, completely disappeared when I switched to FIOSS. My system is dead quiet now. Music and movie sound emerge from a silent black background. I think using dedicated lines and eliminating standard TV cable is more effective in eliminating line noise and RFI than filters and conditioners. |