[etype76]

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I thought I could embed a video but obviously not. I can’t delete it either.

• This reply was modified 5 days, 5 hours ago by etype76.

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[etype76]

Hi, I’m not quite sure what you mean. The servo motor spins as the arm assembly moves towards the record. The arm lowers but there’s a significant delay before the first revolution of the pulley. I checked a video I took a couple of months ago and the first revolution occurred pretty soon after the stylus drop. What specific adjustment relates to this in the SM?

[etype76]

Thanks all, I removed the silicone grease and applied a thin layer of a multi-purpose grease and the vibrations are lesser. I’d like to ask another question but I’ll put it here whether or not related. This concerns the pulley. Playback is fine but the pulley makes its first revolution once the stylus hits the record after about 10 seconds…then it revolves a couple of times as if to ‘catch up’. This can be visually observed looking at the tonearm and sensor arm. Is this normal? I don’t remember seeing it previously but I may be wrong. As I say, playback seems unaffected.

[etype76]

I have a BS4 and it had most of the coating removed except for in he CD compartment which never gets touched. I have my Beogram going into Aux and both are hooked to the Theatre. I like it a lot. Mine can only handle 2gb SD cards as it didn’t get the required update for the 8gb. Not that I ever use SD. The BL4s match the bs4 as they were sold at the same time.

Not owned a Moment. B&O seem to be moving to Tidal nowadays so not sure how much longer Deezer is an option. I think when the Moment goes it’s. Basically an ornament whereas the BS4 could be serviced but only with certain companies.

I don’t think you can futureproof any of this stuff for a decade. Maybe a few years and then good care and luck play more of a part

[etype76]

I’m considering a purchase from UK mmc retipper Audio Origin. I’m for a high end option such as the micro ridge tip with boron cantilever. They state that the number of the cart does not matter as they are all rebuilt so you can’t choose which you’ll get, it depends on stock. Of course, if I’m into B&O then aesthetics and details matter so I would want a cart that says mmc20CL or Mmc4000 -perhaps just my ocd.

As an aside, I have a 20cl and the vocals sound good but instruments such as guitar licks, percussion etc are so far recessed they’re barely audible when compared to my 20en.

I’ve also considered Soundsmith but the current $ strength, shipping, duty makes their 20cl+ an eye-watering layout of cash.

[etype76]

Thanks. I am not in the habit of touching these. I turned the left MOT pot perhaps less than an 1/8 of a turn. I could turn it back to its original position.

Quite temperamental as I noted the issue has gone away for now.

[etype76]

Thanks. That is strange, I see now the markings on the board as well. As you say, if it’s working…

[etype76]

Thanks for the advice. Actually, that led me to a blog post by Rudi and he was experiencing exactly the same thing. Most of the details were beyond my technical level but the last paragraph about adjusting a trimmer slightly clockwise seems to have worked. Now the to tonearm is lifting once again after each side has finished.
https://beolover.blogspot.com/2018/04/beogram-4000-differential-stop-circuit.html?m=1

I’ve circled where I adjusted: I’m not even sure this is what he was referring to but it works now.

[etype76]

Sorry I can’t help much, I don’t have a 5005 but from what you say, and the image of the gauge I’d say it is unlikely to be a stylus pressure issue and more likely an adjustment at the back of the tonearm. You might try and look for a service manual online which usually go through mechanical adjustments. If the issue is electronic then unless you are knowledgeable you’d best find a repairer.

EDIT, and are you saying that the issue is solved when you put the scale over 2g? In short, it won’t damage the Beogram but it will wear the stylus faster and will cause wear on the records, especially if the tonearm has some other issue. I know back in the days when some “hifi” records players were exerting something like 10g! but generally today they never go over 2.

 

[etype76]

I’m wondering too if the very warm weather (where I am) has altered some tiny margin and is causing it.

[etype76]

Hi Alf,

Funny you should mention this issue as I’m currently having the exact same problem with my BG4000. Although I’d say it works perfectly 90% of the time but every now and then when I press ON it automatically switches to 45rpm. This is sometimes accompanied with the arm lowering early before the record although that seems to be even rarer. They sometimes occur together or independently. Both can be corrected with the buttons. Unlike you, I virtually have no electronics skills save for simple soldering so will not touch. If it mechanical then I could have a go. Could it not be the position of the springs?

 

[etype76]

Well, that die-cast bottom chassis looks pristine now!

I measured my Beogram 4000 plinth and I get:

485 x 345 x 25mm

I’m not a carpenter so definitely verify that.

 

[etype76]

I’ll check the dimensions of the 4000 this weekend and post pics.

[etype76]

18s + Core would work very nicely with a Beogram and you could multiroom to other compatible speakers. I believe B&Os expensive 4000c connects via a core hidden in the cabinet.

As for turntable, so many Beograms to choose from but buyer beware there can be a lot of nightmares out there in terms of issues (such as needing lubrication, recapping). Unless you are a hobbyist and want a project I would get one properly restored if we’re talking tangential Beograms (400x, 800x,) some more modern ones look quite nice such as the 4500 and I think there’s a built in RIAA. With others, any reasonable mm phono preamp will be good. Steve at sounds heavenly or Soundsmith are good choices but really so many out there. What’s your budget? Do you intend to buy a lot of vinyl? How much use will it realistically get? I use mine from daily to 2/3 times a week.

Aesthetics will also play a role in your choice I’d imagine.

[etype76]

Nice work! You’ve clearly put a lot of thought into not only the plinth and wood choices but also the practicality of shipping them around the world. It would be useful if you could show sample wood grains/colours etc. When my 4000 has been working a while without issue 🙂 I’d be interested if they are also compatible with the 4000.

[etype76]

I adjusted the screw on the cylinder, gave it 4 slight turns totalling a quarter turn in all. I don’t notice any difference at record level but when I removed the platter the arm is definitely lowering gently just not the short distance to the LP surface. The arm also springs back up very quickly. Should I go further and keep turning the damper cylinder screw?

Another odd thing is that the scraping sound has disappeared now, even after removing those coins so whatever was the obstruction has cleared.

 

[etype76]

Thank you for the input! I’ll take another look at that. I did check it and it looked quite snug in there but not sure when the carriage is under the platter.

I have also noticed that the arm drops too quickly, no damping. This drop causes some pop on touch down and lift off. This seems more pronounced after raising the platter height today.

[etype76]

I think you’re right, Martin. With the plates off again I can hear the noise begin when the “guts” of the tonearm assembly are fully under the platter. An inspection doesn’t show anything specific sticking up although I expect it to be the thickly shielded yellow cable. I’m not messing with those! As a test, I place 3 thin coins on the platter hub to shim it up and the noise disappeared. I also adjusted the springs again and the floating chassis feels better now with the platter bouncing back to centre suggesting it has fully cleared the bottom. I have leveled the platter with the surrounds too. For now, I’ll keep the coins in place.

I notice that the bearing on this 4000 is different from the manual. It’s a brass fixture so am not sure if the vertical height can be adjusted there.

[etype76]

I’ll check tomorrow. The sound is intermittent with the rotation of the platter. I also think the sub chassis might need raising as it may be touching the bottom even though there is a 1mm or so play when I push the platter down at the spindle. But a gentle side to side wiggle of the platter I can hear/feel some friction.
thx

[etype76]

Some progress has been made. The platter is sitting much flusher with the surrounds. There is a scraping sound when the tonearm reaches just past halfway point. At first I thought it was the stylus in the groove but I can hear the sound even when the tone arm is raised over the record.

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