ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi guys,
As I mentioned in my presentation, I just entered the Beogram world! Bought an 8002 but sadly it has one issue: there's a terrible hum (static??) when the needle starts playing (NO hum when record stops). MMC2 cartridge is supposed to be in very good condition (as seller said). I tested this to death before I isolated the problem down to the turntable (thought it could be the tube amp or the 7 pin-to-2-rca-converter, I even purchased a new one.. but it's not that). One channel has it worse than the other...
Any ideas? Any help will be very much appreciated. Here's the audio clip (recorded this with my iphone, noise starts at 0:05', which is when the needle contacts the record).
https://soundcloud.com/parliament83/faulty8002
There is the chassis ground which is around the casing of the din plug, but i think the special pin 7 is also a ground.. Which is not the same on other beogram. If you use a din to rca converter, could it be that that this pin is not actually grounded?
guillaume
Hi,
That sounds like a grounding problem to me. I know the beogram 8000s can be very fussy about being grounded correctly.
Have you got the turntable ground connected to your pre-amp?
Lee
To both Lee and Guillaume. Thanks for the quick replies!
Sorry, I am a noob. I have no idea how to connect the ground from the beogram. All I have is a 7 pin converter to 2 rca, and those RCA go to the L & R inputs of the preamp, no idea about the ground? Thanks.
I've just taken another look at the connector/converter, and in fact the first one was a 5 pin (not 7) cable extension, and had another cable attached (also 5 pin) that had the 2 rca's. BUT the one I bought today is 7 pin and goes directly to the ttable (I bought it from an official B&O store). Is this of any help?
Beograms ground to the metal shielding on the 7pin DIN connector, you could always run a separate cable between the beogram and your preamp. I'd strip a piece of speaker cable and make a loop on one end, find a metal screw on the beogram chassis (prob underneath) and attach the looped end around it. Then connect the other end of the cable to the grounding screw on your preamp. Hope that makes sense. Basically you have to earth the turntable to the preamp somehow.
This is the adapter cable you should be using. Note the ground wire in addition to the 2 RCA plugs.
Lee, that works beautifully!!! Geez that was simple and stupid, but I wouldnt ve thought of it in a million years!!! So thanks a mil!
MediaBobNY, definitely adding that one to the cart NOW, it does seem much simple than attaching a wire. Thanks again to all three of you!!
My pleasure :-) glad it worked for you. That special adaptor is a much more elegant solution though :-)
Enjoy your beogram... You've got a fantastic deck there.