atmasphere
Responses from atmasphere
| Exploring Preamp options for the Pass XA25 The Pass Labs are balanced. If you really want to take advantage of what it does (its distortion will be lower if provided with a balanced source), a balanced preamp is the better choice. What sort of budget do you have? | |
| Need to adjust the speed every time I turn on turntable 15 years old and only 200 hours.... the filter caps in the power supply could easily be defective as a result (they last longer when charged). It may be that the regulators are unable to regulate the DC voltage as a result. | |
| Mag Lev Turntable. Your Thoughts? The coupling between the platter surface and the base of the tone arm must be as rigid and dead as possible. To this end, the bearing can have no slop (but at the same time can't make noise and has to be free) and the plinth be as rigid and dead a... | |
| Stylus-Drag..Fact or Fiction? Ralph, What are you doing with a lathe? Atma-Sphere going to start making records? @mikelavigne We've been mastering LPs for about 5-6 years. Most of the projects we've done are local. It took some time to refurbish the machine and sort out how t... | |
| Crackling and hiss - Preamp tubes not seated right? Despite what I've read about JJ reliability, I decided to re tube with JJ in my amps and pre and they have been rock solid so far and the tone is perfect in my set up. IMO/IME JJs are more reliable than any of the newer Russian made signal tu... | |
| Stylus-Drag..Fact or Fiction? The most popular motor for the cutting lathes is a Technics SP02 direct drive motor which is quartz locked for speed accuracy and weighs ~110lbs with plenty of torque. I doubt this statement. It implies that there are more lathes using the Techn... | |
| What Class D amps will drive a 2 ohm load @cascadesphil +1 | |
| The imperfect amp: Pass or Ayre? I believe John Curl refers to 7th order harmonics as the “devil’s 7th” and attributes a lot of what is heard as harshness to excessive 7th order harmonics. This fact has been known since the 1930s and probably earlier. The 3rd edition of the R... | |
| Correct Way to Invert Phase According to this thread 92% of all CDs play with inverted polarity (I heard similar stats before).@delcal This has been debunked. The correct number is 'about 50%'. | |
| Stylus-Drag..Fact or Fiction? But an AC synchronous motor could still exhibit cogging, if it is poorly designed with an inadequate number of poles. But one should look at the rpm of such motors- instead of running at 33 rpm like a direct drive, 1800 rpm is common; at that spe... | |
| Need Some Tube Amp Advice @mbd3 Given your space issues I think you'll be grateful for the reduced harshness a tube amp brings to the mix. Harshness and hard surfaces can be pretty painful!I'm thinking that you'll want something that is about 30 watts or so since the room ... | |
| Stylus-Drag..Fact or Fiction? Pardon me, but can we let this cogging thing go with respect to synchronous motors? Because its totally not a thing. Synchronous motors (seen in idler drives and some belt drive machines) are locked to the line frequency and don't really have powe... | |
| The imperfect amp: Pass or Ayre? It would be nice to me if I could go from my preferred amps to specs and go "aha! This is what I like!" and therefore, buy the cheapest that fits. :D :D :D @erik_squires What is needed (and entirely possible right now) is a weighting system for ... | |
| The imperfect amp: Pass or Ayre? To add to @almarg 's comments above, specs *are* important; perhaps the one that can be the most counter-intuitive is THD, as a very low THD spec is often an amp that doesn't sound nearly as good as one with a higher THD spec. I've already explain... | |
| Need Some Tube Amp Advice What's your budget? The Cornwalls are pretty tube-friendly. You don't need a lot of power so this is all about nuance. Smaller tube amps often have more bandwidth (although because our amps are output transformerless this doesn't apply to our amps... |