jea48

Responses from jea48

Help With 60Hz Hum PLEASE
Al,Thanks for the response.Second, I would discount as irrelevant all of the findings in which hum occurred when an unterminated XLR cable was connected, and when an XLR cable was connected to the AVR while the AVR was unplugged from AC power (whi... 
Help With 60Hz Hum PLEASE
jo3533,I am at a loss.Starting from ground zero with no ICs connected to the Adcom Amp there is no hum.When you connected the DVD player to the Adcom amp using single ended ICs there was just a faint hum. Which Al explained the reason for the fain... 
Help With 60Hz Hum PLEASE
I was and still am using XLR IC’s. I only ran RCA interconnects for the above test, and it still does not answer my initial question. Yes I understood you were going to use XLR ICs. I just don’t remember reading in one of your previous posts you h... 
Help With 60Hz Hum PLEASE
Ok, so I hooked up an old Koss CD player to my amp. fired up the CD player and then the amp. One note about this unit is that it only has a two prong plug much like my Marantz.The noise was GREATLY reduced. I could still hear it, but is was very f... 
Help With 60Hz Hum PLEASE
jo3533,You cannot connect the XRL cables to the amp without the other ends of the cables connected to a load/source.If they are not connected to a load, like a preamp, and are just laying there open ended you basically have 5 antennas picking up R... 
Help With 60Hz Hum PLEASE
This is driving me crazy. Next I am buying longer interconnects and moving the amp farther from the pre-amp. Ill let everyone know the results.You never said how long the XLR cables are. I assume they are at least 1 meter.That should be plenty lon... 
Help With 60Hz Hum PLEASE
A special note on “hum:” When there is a low-volume “hum” audible throughout your speakers, even with the main volume turned all the way down, you have a common phenomenon known as a “ground loop.” A ground loop is basically a difference in ground... 
Help With 60Hz Hum PLEASE
To all,The Marantz 8801 has double insulated AC power wiring. The IEC power inlet connector on the back has only the hot and neutral contact blades. Safety equipment ground is not used.The signal ground of the Marantz 8801 is bonded, connected, to... 
Short coax digital cable: qed audioquest ricabl
Thanks Al.Jim 
Help With 60Hz Hum PLEASE
2.   Unplugged any non essential item leaving just the pre-amp and amp plugged in (NO CHANGE, NOISE PRESENT)To be clear, you had nothing connected to any of the line inputs on the Marantz A/V preamp? (All the input jacks were empty of Interconne... 
Short coax digital cable: qed audioquest ricabl
almarg, (Al), and kijanki.What would you add to prove the point?http://forums.stevehoffman.tv/threads/digital-coax-cable-bnc-vs-rca.496876/Thanks,Jim 
Is the main reason audio equipment depreciates so much is
taters said: The Item cost with parts and labor included was 7.00. The retail price was 69.95. So like you said about a 10 times markup from what it cost to it’s retail price.How about the manufacture’s overhead costs?Profit mark up?Distribution c... 
Possible new Audiogon phishing scam
emb said:I got 4 thanks again now i can sleep tonight!!Fine for you, but what about the poor guy whose job is to read through 10s of thousands, maybe 100s of thousands, of threads looking for those that may not meet Agons guidelines? Talk about ey... 
Bad caps???
I suggest you post a message on Amp/Preamp Asylumhttp://www.audioasylum.com/forums/amp/bbs.htmlFor the subject title you might try something like,Ping: Victor Khomenko. Problem with BAT VK-3ix preamp.Then post your question in the box. Victor freq... 
Why use ground wire from preamp to amp???
Since most components have grounded ac power cords and most interconnects have grounds, every component has two earth ground and thus ground loops. The third wire would add additional ground loops. All of this is to satisfy Underwriters Labs on th...