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Beogram 9500 issue

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mounin
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mounin Posted: Mon, Jan 22 2018 7:14 PM

Hi everyone, I'm coming to you because I've a problem with a Beogram 9500 that I just baught. 

 

it sounds bad (crackly, and tiny), so I replaced the mmc2 with a good one thinking it was the cartridge/ needle... But it's the same with the good one .

other thing, the motor does a weird noise ... Is it related? (Noisy motor, bad sound ?

i plugged it into my beocenter 9500...

 

thanks by advance 

sonavor
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sonavor replied on Tue, Jan 23 2018 1:21 AM

On B&O turntables without a built in RIAA phono preamp the audio signal goes directly from the cartridge out through a muting relay to whatever amplifier/receiver you are using. For that type of scenario I would recommend switching the phono cable between the turntable and amplifier/receiver first. If the problem isn't there start looking inward at the DIN plug and muting relay.

Your Beogram 9500 probably does have a built in RIAA preamp though so that is an added suspect to the problem. I would still try a different cable first but after that you will need to start debugging the internals. At least it appears likely your MMC2 is good.

I would guess that the motor issue is a separate problem.

-sonavor

mounin
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mounin replied on Tue, Jan 23 2018 10:52 PM

Thank you for the answer, I think stock 9500's don't have riaa preamp, do you think that this one has been modified?

best regards 

 

beoaus
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beoaus replied on Fri, Jan 26 2018 2:48 AM
Not that it helps, Beogram 4500’s have the inbuilt RIAA. The 9500 is pretty much the same sans this component.

Beoaus.
mounin
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mounin replied on Fri, Jan 26 2018 12:47 PM

I think the same... so, i have to check the cable... 

Any other ideas for this weird problem?

Beat regards

mounin
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mounin replied on Sun, Feb 18 2018 11:26 PM

Good News ! The turntable run correctly plugged into a beomaster 4500 , so it was the riaa problem. 

I have to try it into the beocenter 9500 plugged into another input instead of phono for a final test.

But, it still does the weird noise. I'm not sure but it seems like it comes from the motor... A kind of a "tic tic tic" rapidly...

Any ideas for this issue?

thank by advance to everyone,

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