Plinth ideas for DENON PD-80 DD turntable

@chakster

Ho un nome che ti è stato consigliato qualche tempo fa per il mio TT101 se in futuro avessi avuto bisogno.

Armin Kahr di Berlino cerca di informarti;  I don't know any more.

You’re right, but i don’t have a garage, they are here at home in the storage. I will plug them in and check again, it’s been a while since i tried them.

if you have to leave them in an unprotected place, put some silca gel envelopes near the turntables ....bags with special salts absorb moisture.  ;)

Thanks Mr. Postman, i've been waiting for you. 
Hello DP-80 

I own a Dp80. It is perhaps too simple to say that the platter is spring loaded. The platter is two concentric pieces,an inner piece that is about the size of the record label or a little wider in diameter, and an outer which goes all the way out to the periphery. The inner and outer platters are linked by flexible thin metal fasteners that act sort of like a spring to decouple the two sectors . This was Denon’s way of isolating the platter from the bearing, since the playing surface of the LP is almost entirely supported by the outer platter.

I have a DP-80 too. My platter differs markedly from your description: the "inner piece" is not the size of the label, it is the size of the LP. The playing surface of the LP is entirely supported by the inner platter, not the outer. The outer is directly coupled to the main bearing/motor. It may look otherwise to a casual glance, but there is a clear gap (±1mm) near the edge, separating the inner platter (11 5/8" diam) from the outer — the outer platter is just a silver rim 3/8" wide, though 99% of its mass is hidden beneath the inner.

The springs are only half of the suspension. There are also foam pads (9 of them IIRC). Like all foam from that era, they decompose, crumble, rot (just like old speaker surrounds) and no longer provide the intended decoupling or resonance-damping. You cannot see them without removing the leaf-springs and separating the two parts of the platter, so you may not know they’re there, or their condition.

But if you had it completely rebuilt, I’m sure the technician took care of it.

The discrepancy between our platters confuses me. I’ve had it apart (to replace the rotten foam pads) so know it rather well, and just looked again. If you have time, could you take another look at yours, and confirm the inner part is label-size? If it is, Denon must have made differing platters, which would be very intriguing.

@bima my platter is just like yours, the inner part is not the label size, it’s the record size (on my DP-80)