Anybody?

Can the weight inside the tone arm come loose?

I´ve ordered a stylus weight to get clarification.

The BG7000 had a built-in RIAA amplifier whereas the BG5005 doesn’t. So if you’ve connected both to the same phono input, then that explains the distortion. 

The BG7000 is connected to a Beomaster 7000 - the BG5005 to a Beomaster 5000. I am aware of the differences on the RIAA part, thanks ;)

I didn´t swap out the BG´s, I swapped the stylus, and the issue remains. It seems like the tonearm weight doesn´t work correct on the BG7000. The MMC1/2 works great on the BG5005 at 1.2g., where it needs maximum weight on the BG7000 to sound okay-ish.

You clearly need to check the stylus weight - here is a diagram of the arm structure which may help though.

Cheers. I´ve ordered a stylus weight, however things from China take quite some time to arrive these days :)

Hi beogramers,

I have tested two different MMCs (MMC2 and MMC5) on a same beogram 7000, both are old and iit's mpossible to know how much years of use.

Visually there are structural differences : Cantilevers don't look the same. And The cantilever on the MMC5 has a different angle than the angle of the MMC2.

There is a weight incomprehension :

The MMC2 is said to be specified to being set at 1 gram, but I have distorsion if not set up to 1,8 g.

What do you think, is it dying ? Do I have to trust the measure on the arm ?

Thanks

Cantilevers are different. MMC2 is crystal, MMC5 is aluminium.
Angle should be the same, so perhaps the suspension is bad in one cartridge. This can usually be repaired by one of the specialsts.

The tracking force dial should be calibrated if in doubt. Use a tracking force gauge.

Martin