Click title to read one, or click date to read all below it.
02-16-10
What happens when you pull the connections from the sound ca ... Atmasphere
02-16-10
the only way i have been able to reduce surface noise, oth ... Islandmandan
02-16-10
Not sure i understand. why are you sending the phono stage ... Swampwalker
02-17-10
Hi again. sorry i wasn't clear. the recording i provided a ... Scar
02-18-10
It sounds like the noise is coming from the preamp itself. ... Atmasphere
02-18-10
Thanks. i've talked this through with grado, and i've even ... Scar
02-18-10
"defeats the purpose of the low output grado, the low o ... Drewmb1
02-21-10
Thanks. can anyone recommend a sut for my setup? i honestl ... Scar
02-25-10
I am looking through some sut's around here. i need some cl ... Scar
02-26-10
Scar, the sut is recommended for its noise-filtering propert ... Gregm
02-26-10
I have heard from someone else that "the sonata has an ... Scar
02-26-10
Scar, the sonata has an impedance much lower than that. the ... Atmasphere
02-27-10
Yeah the impedance is 2 ohms right? thanks for the link i'll ... Scar
03-01-10
I heard back from grado that the cartridge "has .4 mv o ... Scar
03-01-10: Undertow
The Grados have a pretty sketchy reputation of excess noise or hum with many tone arms and setups in general. If you can get it right they are suppose to be really good for the money, but if your getting noise from a grado its supposedly very hard to go the other direction from my understanding. I own that table, with KAB everything as well, its dead silent.
I have owned grado, had them in the past and they were noisier, however never heard them on this table. I would borrow another cart first and see what it does electrically being hooked up into the signal first, you don't even have to set it up, just mount another cart to a new headshell and mount it to the arm connect the headshell wires. See if the noise is gone then its the grado having an issue, load, acoustic arm resonance whatever.
By the way I currently have a .4 mV moving coil myself on that table combo, works silent, so its nothting to do with low output specifically, but possibly that cart. directly.
Good luck
Undertow (Threads | Answers | This Thread)
03-01-10
Thanks for your insight. trying another low-output cartridg ... Scar
03-03-10: Undertow
Well there are some electrical shield devices and sticky sheets made, one comes from Percy audio I think, its fairly expensive, its a metal sheet that can be formed to fit around transformers, and the chassis panels etc...
This could knock out the rf noise, also cables and placement, I would move the phono amp away from everything possible temporary and see, also the ground plug or electrical ground in your socket could be creating noise. Its hard to pin down, because there are so many factors that you could be getting noise. Also if the outlet your hooked up to in the house is out of phase(hot swapped with the Neutral etc...) could cause issue, this could be reversed using a ground cheater and flipping your plug on the phono amp over to just check, then fix the outlet itself if this is a cause of noise.
If you have a Ground pin on your preamp, or phono amp try to lift it and see, also try connecting your tone arm wire with and without the ground wire and see. I have also taken an extra piece of wire and attached it to the phono amp ground and then touched other screws on the amp, preamp, cd player whatever to see if a better common ground could be found to eliminate more background noise, I have heard changes.
Undertow (Threads | Answers | This Thread)
03-03-10
I use mu-metal sheeting to protect my mc step up amp from hu ... Mapman
03-04-10
Thanks, all. i just cannot get the noise down to a satisfia ... Scar
01-14-11
How did the high output sonata work for you? i have a grado ... Knownothing
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