lewm
Responses from lewm
| 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... | |
| Who needs a MM cartridge type when we have MC? Timeltel, I don't know about you, but I am sure I will never hear a 2db difference in output that occurs above 15kHz. However, do you think that because you know the measured frequency response variations, you might be biased to hear the two cartr... | |
| Perreaux SA2 Preamp's Phono Stage Low frequency feedback is not necessarily evidence of too much gain in the phono stage. Perhaps there is a tonearm/cartridge mismatch such that the resonant frequency is in the audio range. The resonant frequency is a function of tonearm effective... | |
| Albert Porters after market panzerholz plinths Mapman, You have fallen prey to a common fallacy regarding direct-drive turntables, one that was first foisted on the audiophile public when we were led to believe that belt-drive is inherently superior. That is the idea that a direct-drive turnta... | |
| Albert Porters after market panzerholz plinths Jlsemrad, Interesting idea. Perhaps the reason that Raul likes the outboard tonearm pod with his plinth-minimal SP10 is related to isolating the tonearm from undamped resonances created by the motor. Still, I think the tonearm and bearing need opt... | |
| Albert Porters after market panzerholz plinths I have heard the Walker in a friend's system, and I think it is fantastic. I never heard it side by side with any direct-drive turntable, and frankly I would be surprised if an SP10 Mk2 could "trounce" a Walker, regardless of the plinth used, but ... |