B&O Beogram 3404 Wow&Flutter?
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JonL
Lunatic Member
AFAIK, there's no way to "adjust" wow and flutter. I never measured my 3404, but I measured W&F on my TX-2, and it was very respectable. (There's a cool iPhone app where you actually put the phone on the platter and it uses the phone's accelerometer to measure the RPM and W&F, I'll see if I can find it and post it's name here.)
If you can find the service manual, I'd start with cleaning and lubing the platter bearing, cleaning and degreasing the inner platter where the belt rides, and despite the belt seeming to be fine, try a replacement if it's still not right. I don't know if there's a requirement or way to lube the motor itself.
If you can find the service manual, I'd start with cleaning and lubing the platter bearing, cleaning and degreasing the inner platter where the belt rides, and despite the belt seeming to be fine, try a replacement if it's still not right. I don't know if there's a requirement or way to lube the motor itself.
I have one on my Android phone, "RPM Speed and Wow".
What model Android? My A13 has no gyroscope.
As the owner of a Bang & Olufsen RX2, I would recommend you go to Danish Sound Parts and buy one of everything they sell for the 3404. I finally did that for my RX2. Actually I wish I had bought two or three pairs of the turntable lid rubber bumpers. I’m convinced they would be a perfect fit for my Yamaha P-750. And my Philips GA-427. I may yet. They weren’t shipping to the US for a while, due to tariffs presumably. I checked recently and they were again, so I pulled the trigger. Glad I did.
Yeah the Soundsmith cartridges are spendy no question. But in my experience it’s worth it. Mine had an original MMC5, I think. It had the typical suspension failure. I got an SMMC4 back when they were what, $180 or so. I may get another one just for future proofing. If I win the lottery I may even go up the food chain a bit. But holy crap! The SMMC4 is $230 bucks now!
Cheers……………….Todd
Yeah the Soundsmith cartridges are spendy no question. But in my experience it’s worth it. Mine had an original MMC5, I think. It had the typical suspension failure. I got an SMMC4 back when they were what, $180 or so. I may get another one just for future proofing. If I win the lottery I may even go up the food chain a bit. But holy crap! The SMMC4 is $230 bucks now!
Cheers……………….Todd
Thanks. Going to order some parts for mine.
Is there a procedure to get at the platter bearings? I'd be afraid of messing up the size-speed sensor.
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JonL
Lunatic Member
I believe that after removing the outer platter (which pilots on a thin ledge around the size sensor), then you have access to the belt an inner platter. You can just slip the belt off the inner platter, and then *I think* you can simply lift the inner platter with its bearing spindle up out of the bearing well. The speed/size sensor mechanism is *I think* concentric with the spindle and separates and re-connects (mechanically) without any intervention. In other words, if I'm correct, you just lift the inner platter up like you would on any other turntable.
But before you follow my advice, seek out the service manual on line! It will undoubtedly also have info on the specified lubricants.
It’s interesting that they don’t list an electrical part kit for this one except for bulbs. They do for some but not for others. The one for mine had all of the electrolytic caps, both trimmers plus new fuses and fuse holders (for European models). Plus they listed the relay. Maybe the 3404 doesn’t have the same issues that the RX2 has. I think, like @Skip Shot, I’d recommend you go ahead and replace any electrolytic caps you find in there though. Just because.
Cheers……………………Todd
Cheers……………………Todd
