jea48
Responses from jea48
| Help With 60Hz Hum PLEASE Al,From jo3533 first posted message.Quote:So this is what I have done to check the system so far.1. First off I separated all of the components power sources, plugging each component into its own outlet with the amp plugged into the dedicated ... | |
| Audio Research VTM-200 Bias Issue jellybean,F1, 7 ampF2, 4 ampBoth located in AC power line.F3, 1/4 amp Scroll down the page until you come to the power transformer diagram. Start to scroll up keeping your eyes to the far left hand side of the page.You will see 4 dual section caps... | |
| Help With 60Hz Hum PLEASE Thanks Al for the response. Hopefully jo3533 will pick up some RCA shorting plugs.jo3533,Does the hum sound like one of these?60 Hz.https://www.youtube.com/watch?v=E_Sf7rSOU78120Hz.https://www.youtube.com/watch?v=pC4Uzt0qm2E | |
| Help With 60Hz Hum PLEASE jea48 said:I have had instances when a power amp was left powered up and the preamp was turned off. There was not any hum/buzz coming from the speakers. Of course I have never owned a 300 watt per channel amp either. Not relevant; different compon... | |
| 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 |