phoenixengr
Responses from phoenixengr
| VPI 300 RPM vs 600 RPM Better? Hurst motors are very inconsistent; some are quiet, some vibrate more, some start off quiet then get noisy. If the motors are the same power rating, there should be no difference between 300 RPM and 600 RPM motors. VPI used 10W 600 RPM motors... | |
| Weirdest record defect? I bought an LP on e-Bay and it has a lot of WOW and flutter. Any ideas as to why? | |
| Example of a piece o’ crap, useless review @lewm Agreed. A constant cleaning device like you describe should only slightly slow the platter and the Condor would be able to compensate for it as long as it was applied before the speed is "synched" (less than 0.005 RPM error). After that p... | |
| Example of a piece o’ crap, useless review I agree with the OP that the TAS review lacks substance which is a real shame as there are technical specs in the Pyxi manual as well as several frequency response and noise plots that might put a little more meat on the bones of this review. ... | |
| Example of a piece o’ crap, useless review @lewm wrote: Also, "I did notice that a record brush slows everything down considerably, which was a minor annoyance." That ought not to be happening with the Roadrunner/Condor/Eclipse motor system up and running. Something is off. This is... | |
| Example of a piece o’ crap, useless review @soix - Really, Part Time Audiophile as an example of good reviews? Their stated policy is to NOT publish a bad review. The puff pieces I’ve read on their site goes far beyond hagiography and would make even the most shameless fan boys blush. No m... | |
| SUT - electrical theory and practical experience @rauliruegas My point about the specified impedance along with the output voltage was to make the necessary gain calculations easier. In your Lyra example, using a 10 Ohm load with a 7 Ohm impedance cart will drop the output level by 4.6dB, whi... | |
| SUT - electrical theory and practical experience Some observations: I always found the specs for a cartridge confusing: 0.25mV output at 5 cm/second. Into which load? Open circuit? Load=Cart impedance? Load=recommended impedance? Why not state the output voltage and the impedance at which ... | |
| Widow with question: Rega TT-PSU or Rega Neo TT-PSU? The picture you posted is the Neo and it is newer than the TT-PSU-2. There is an on-line resource that will explain the differences and list price of each unit: http://www.turntablepsu.com/rega.html | |
| Is the VPI Forum Down Again? There may be another motive for shutting down the original forum: Mat and Harry posted numerous times eschewing any sort of digital electronics, digital readouts, closed loop feedback, tachometers, speed correction and BLDC motors. Two years ago... | |
| TT speed Perform the demonstration in the last paragraph of my previous post. Keep the platter stationary and move the stylus from the outer groove to the inner groove area and measure the distance from the stylus to the tape when located at the inner gro... | |
| TT speed The OP is correct and his numbers are spot on target. The math to prove it is not difficult. If the position of the cartridge changes by 20° from beginning to end of the LP, it will lengthen the time of the play back by 100mS: 20°/360°=1/18th of ... | |
| Possibly Dumb Question re:Battery as a power supply The LM317 has a drop out voltage of ~3V, so I doubt it regulates the battery output to the table. NiMH batteries need to be charged at 1C and negative delta V slope detection, thus the higher voltage input, the PIC processor and complex charging c... | |
| Possibly Dumb Question re:Battery as a power supply @terry9- ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 500 mA, TJ = Tlow to 125°C (Note 17), unless otherwise noted) That is the standard disclaimer at the top of the chart of parameters. It is the operating point used in all of the measurements be... | |
| Possibly Dumb Question re:Battery as a power supply millercarbon: Never misunderestimate the ability of the forum to overthink even the simplest things. Full disclosure: I converted AC to DC battery, did none of that, and it was audibly quite a bit better. Just not that hard. Unless you make it so.... |