BeoGram

Re: Calibrating a BG RX?

ruudvdklauw — Wed, 13 Jun 2007 14:08:48 GMT

Hello Jordan and Peter,

I was speaking about anti-skating from the vision of a RX2, apologize. I'm not sure if the RX has something of a anti-skating.

Jordan, have you checked the bottom of the RX already?

Re: Calibrating a BG RX?

Peter — Wed, 13 Jun 2007 14:00:03 GMT

Does the RX have this? I know some 5000s do and the RX2 does, but I didn't know if the RX did.

Re: Calibrating a BG RX?

jkenning — Wed, 13 Jun 2007 13:59:24 GMT

thank you all for the excellent advice; my sound has improved dramatically through cleaning the cartridge and adjusting the tracking force! I'm also looking into the anti-skating...

Best,

Jordan

Re: Calibrating a BG RX?

ruudvdklauw — Wed, 13 Jun 2007 12:57:57 GMT

Hello,

There is an anti-skating adjustment at the bottom of the beogram. Have you checked this? Maybe that's a cause of the problem too. You have to set it to separate numbers; one for mmc1 and mmc2, one for mmc3 and one for mmc4 and mmc5.

Greetings,

Ruud

Re: Calibrating a BG RX?

kimberley — Sun, 10 Jun 2007 17:36:02 GMT

Having agreed with Peter, I would add that the last time I had a similar problem, looking at the stylus under the microscope revealed a horrifying mess: deposits which I was sure that careful record & stylus cleaning made impossible! alcohol & a camel-hair brush restored the sonority of sibilant sounds. I usually use a test record (try e-bay), in my case Hi-Fi Sound 75, to set the stylus pressure by ear, as the scales can be inaccurate on arms, as can pressure gauges - we are trying to judge fractions of a gramme, with static & dynamic friction to take into account, not to mention our judgement of the 'floating' state. If you look back at the Hi-Fi magazine tests of the 70s, the 'optimal' tracking force wa often at variance with the cartridge manufacturers' claims - one may suspect that, since low tracking force was seen as desirable, optimisic claims may have been made by some of them, like acceleration times for cars! Record wear may lead to a requirement for a less sophisticated stylus profile & a higher tracking force, too. I use an MMC-2 tracking at 1,3g for 'very good' discs, & an MMC-3 at 1,75 for worn ones.

Re: Calibrating a BG RX?

Peter — Sun, 10 Jun 2007 15:53:07 GMT

The easy way to test this is to set the weight on the scale to 0 and if the arm floats, it is correctly calibrated. Set it to 1.2 for playback. It could be that the suspension on the cartridge is failing. Try warming it up with a hair drier and see if this makes any difference! Not too hot!

Calibrating a BG RX?

jkenning — Sun, 10 Jun 2007 13:27:46 GMT

Hi All,

I regret that I'm not more familiar with this process...

I have a BG RX that as of late hasn't sounded very desireable. Recordings are sounding distorted occasionally ("s"s are turning into "sh", etc).

The unit has a MMC2 Cartridge that has been installed for probably about eight years and has gotten occasional use over that time.

I'm concerned that my tracking force may be off (I don't think there's anything else to adjust on these?) but I'm unsure of the proper technique to correct it.

Anybody have any experience with this sort of thing?

Thanks....