lewm
Responses from lewm
| Who needs a MM cartridge type when we have MC? Not to be a nitpicker, Raul, but the data you quote say "less than" 50mg for the bearing friction of a DV507. This means to me that there is some sample to sample variation but that the value is always "less than" 50mg. However, one hopes that is ... | |
| Who needs a MM cartridge type when we have MC? Dear Raul, In your remarks about bearing friction, I presume you refer to friction in the lateral plane. Yes? Of course for the DV tonearms, we have two different pivots, one for lateral and one for vertical. Does DV publish the figure you quoted ... | |
| Albert Porters after market panzerholz plinths Thanks, Mike, for the info on your "copper tops". We've discussed this before, and I should have remembered that those surfaces belong to the respective platters, not to any mat.Logenn, or anyone, as long as you have the correct adapter in place s... | |
| Albert Porters after market panzerholz plinths I use a SAEC SS300 metal mat on my Mk2 and Denon DP80. Weighs a bit over 1 lb and seems to be well tolerated in both cases.Mike, I presume Steve Dobbins made your beautiful copper mats. (Well, he surely made the one on The Beat.) Does he sell them... | |
| Albert Porters after market panzerholz plinths If the M-S mat weighs 4 lbs, consider that the platter + mat now weighs over 12 lbs. (If memory serves, the MK2 platter alone weighs about 8 lbs.) This represents a nearly 50% increase in mass over the stock platter + mat (8 to 9 lbs total). I'm j... | |
| Albert Porters after market panzerholz plinths What is the weight of a CU-180? The stock MK2 mat weighs a bit more than half a pound. I would not use a mat that weighs much more than 1.5 lbs. It is not the bearing I would worry about; it is the servo action. The servo and motor were designed t... | |
| Albert Porters after market panzerholz plinths Jfrech, Do you recall or can Albert tell us what turntable mat he is using on his Mk3? Surely the factory stock rubber mat can be beaten. The choice of a mat makes a huge difference, once the other elements are optimized.I like your choice of the ... | |
| Albert Porters after market panzerholz plinths Dear Halcro, Have not laid eyes on a live GPM, let alone heard one. Maybe I will see one at the RMAF, if I get there.Dear Dbcooper, I am constructing a combination baltic birch/slate plinth for my SP10 Mk3. Albert was kind enough to lend me his id... | |
| Albert Porters after market panzerholz plinths Wonder if you can cut it with a waterjet, a la slate.For comparison, a slab of Pennsylvania slate that is 12 inches square (one square foot) and one inch thick weighs 15 lbs. (Slate from other sources can be more or less dense. For example, Vermon... | |
| Albert Porters after market panzerholz plinths Halcro, you raise in interesting question. Those old M-S direct-drives are not rated in the top tier, but a modern equivalent is the Grand Prix Monaco, which could be said to be plinth-less, even though it appears that the carbon fiber bits are th... | |
| TriPlanar Tips I kind of agree with paperw8. If the damping trough is securely fastened, then it is in effect a part of the overall mass of the tonearm. The totality of the tonearm almost certainly has a resonant frequency, so removing the damping trough could o... | |
| Albert Porters after market panzerholz plinths Raul, I guess what I was speculating about earlier is as follows: Many/most of us equate the good qualities of the Garrard/Lenco/SP10s/etc to the "high torque" of their respective motors. Turns out in real analysis done by Mark Kelly that the Garr... | |
| Albert Porters after market panzerholz plinths Mapman, You are quite right that not all that torque is used during play. We like to think that some torque now and then is needed to maintain speed stability in the face of stylus drag, which can vary in degree related to the tortuosity of the re... | |
| Who needs a MM cartridge type when we have MC? Dear Timeltel, I was merely referring to the fact that my own hearing is practically non-existent much above 12 kHz and certainly non-existent above 15 kHz (probably more than 6-8 db down from 1kHz). I had it measured about 8 years ago by an audio... | |
| Albert Porters after market panzerholz plinths I made no comparison between direct- and belt-drive turntables on any level, especially to say one is noisier than the other. I was just addressing what I perceived to be an inference by Mapman that direct-drive turntables are inherently noisy, be... |