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converting Rega planar 78 to LP? Yes. (I think ... )

DC

"Manhattan Boy"
Subscriber
I got this turntable a couple of years ago when I had a strong interest in 78s. Eventually, the novelty wore off and that interest faded. (Duh. 78s don't sound very good, even on a really expensive player.) I've tried in vain to sell this thing and not loose too much money. (For a good laugh, check out this thread: http://www.audiokarma.org/forums/showthread.php?t=463541). Alas, it is here still, or rather, again.

Frankly, this is pretty over-priced and under-featured for a dedicated 78 turntable. However, it is almost a P2 - not a bad machine in its on right. This one is immaculate, has a 12" platter, the famous RB250 tonearm, and is already wired for stereo to the cartridge. The motor assembly underneath says "planar 25" with a little "78" sticker over the "25" part. I doubt it's a different motor assembly - probably just a different sticker. I think the only difference is the motor pulley and/or the subplatter.

Another user in the thread above suggested I just get a different pulley and make it an LP player. Well, not so easy. I called a reputable on-line retailer a few months ago and inquired about it. I was basically told, it ain't so easy. "The platter is 10" and will need a 12" platter, the tonearm is mono and will need to be rewired, and there are others issues with the motor, pulley, and subplatter" blah blah and so forth. They obviously didn't really know the details and apparently didn't want to be bothered. I had earlier (maybe a year ago) contacted a local Rega dealer (from whom this was originally purchased) and received a frustratingly similar answer.

Well, I dug around a bit and found that there are several after-market Rega subplatter assembly manufacturers as well as pulleys, motors, and belts. Most of this stuff is overseas (Europe), but it's a start. Given the apparent interchangeability of these parts, it stands to reason that OEM parts might be around. I have submitted a detailed message to another Michigan dealer, this time with some research details and photos, in the hopes of a positive response.

Pics to follow ... PhotoBouquet is doing maintenance at the moment.
 
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Worst case, if you can idenfiy the RPM of the motor and accurately measure the exact diameter of the platter where the belt rides, you may be able to get a machine shop to custom make you a pulley with the size to get that guy to spin at 33.3 rpm. Its largely a matter of knowing the motor speed and exact pulley (platter) size to work out the ratio.
 
Yes, I looked at Michael Lin's ungrades (actually, his website is here: http://www.lpturntables.blogspot.com/), but I am not interested in an (expensive) upgrade part, just an OEM part. :) However, it didn't occur to me until just now that he might have old OEM part kicking around.
 
How much cheaper were you expecting a Rega original part to be? His is $35. I wouldn't be surprised if OEM cost nearly that much.
 
OK, you are talking pulley and I'm talking subplatter/hub. Lim's subplatter is $150, which is where I stopped. I need a new subplatter (the 78 is different) as well as (probably) a pulley. In an effort to try to spend less, I am trying to pursue the OEM route.

I have absolutely no frame of reference for prices on this stuff other than the "upgrade" parts I am finding online.
 
The subplatter on the planar 78 has a smaller-diameter lip underneath on which the belt rides, to get up to 78RPM. On the P2 (etc.) subplatter, the belt rides around the outside, for slower speed.

IMG_1123.jpg


IMG_1125.jpg
 
Have you tried contacting Rega directly? They were very helpful when I moved to the US from England 10 years ago, I bought a 110v motor kit. Funny thing was, the motor I took out said 110v 50Hz on it. There was a big resistor on the circuit board, must have been to step the voltage down.

Looking at your pictures, I'm guessing the correct subplatter and motor pulley would have you running at 33/45, but I'm no expert on these tables. I just own one, and love the sound.

DC said:
PhotoBouquet is doing maintenance at the moment.

Is that a reference to the TV series "Keeping up Appearances"?

Lee.
 
OK, you are talking pulley and I'm talking subplatter/hub. Lim's subplatter is $150, which is where I stopped. I need a new subplatter (the 78 is different) as well as (probably) a pulley. In an effort to try to spend less, I am trying to pursue the OEM route.

I have absolutely no frame of reference for prices on this stuff other than the "upgrade" parts I am finding online.

The subplatter should be easy. Most people who have upgraded to a GrooveTracer or DeepGroove subplatter are going to have the original hanging around. There was one on Barter Town, recently. I might put mine on BT, someday. You could ask in the Rega forum at VE to see if anyone will let go of one.
 
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