atmasphere
Responses from atmasphere
Nuisance tripping of AFCI circuit breaker by inrush of current when turning on amplifiers @toronto416 , @devinplombier made a very good suggestion! Breakers break more easily the more they break. Eventually they are breaking at far lower currents than they are rated. So you might just try replacing the breaker with a new one and prob... | |
Pass....Accuphase....or...... @southofdallas Class A means the output device or devices never go into cutoff. There are class A push-pull amps and class A single-ended amps, which might be tube or solid state. Class A is used to get more linearity out of the output section o... | |
Do military/industrial tubes sound better than regular ones ? @inna Some do and some don't. Something to keep in mind- all tubes, regardless of the source, should be vetted prior to use in high performance tube equipment! This means they should test good and also auditioned for noise, crackling and microphon... | |
An Audio Conversation with ChatGPT Although its rated output is 225 watts, much of its sonic magic comes from operating in a pure Class A mode for a significant portion of its output range. Here’s how to think about it: 1. Design Philosophy of the P-4600:Accuphase amplifiers are ... | |
Pass....Accuphase....or...... A48 is designed as class A amp for loads = or > than 8 Ohms. for loads < 8 Ohms it is a high-bias AB class amp. To be clear, 'high bias' class AB amp isn't a thing. Its either class A or its class AB. In this case, class AB. Any properly... | |
For Tube Folks... My question - Within reasonable certainty, is this tube is NOS or is it USED? @inagroove Just look at the pins of the tubes. If you see scrapes along them the tube has been inserted into sockets a few times. An NOS tube will have no scrapes. | |
Pass XP-17 and Hana ML loading question static is generated somewhere between cartridge and Preamp I can't figure out if its is inner generated or pick from some kind of electric fields generated by what I suspect TV hanging above. @ssg308 By static do you mean a crackling sound? One... | |
Your journey with lower-watt tube amps -- Can a kit be good enough? @hilde45 +1 Its amazing it did as well as it did initially! It's my surmise the prior owner never played the amp that much due to the error. So it might sound a bit better with some break-in. | |
If an amp has 4 ohm taps I can confirm both amps sound fantastic with my 4 ohm speakers; no idea if the tubes will last longer because of the "reduced maximum output" or if other factors are in place. @mclinnguy There is. Its the load on the power tubes, which is trans... | |
Pass XP-17 and Hana ML loading question @ssg308 Its a good idea to make sure the arm and cartridge are compatible before you play with loading. If the arm can't track the cartridge properly because the mechanical resonance of the two it outside the ideal window, loading really won't hel... | |
Who positions their speakers straight ahead (zero tow in) and why. @unreceivedogma I'd call that a moderate sized room. Some speakers have tweeters with lobes that make the best listening when the speaker isn't pointed directly at you. Every speaker is different... | |
Phono Cartridge IMD Measurements, Observations and a Question Are you suggesting that the platter mat contributes to IMD @lewm Yes. The role of the platter pad is still poorly understood in high end audio which is a shame. But its effects are easily measured and heard. Most platter pads are just plain w... | |
Technics SL-1200 vs. Scoutmaster @pryso 'Yes' and 'no'. I do know the weight is no concern for the SL1200 at all. The thickness is a concern since the center spindle is too short. So you can use a record weight but not a clamp. | |
Your journey with lower-watt tube amps -- Can a kit be good enough? Highs pretty clear, though perhaps some slight roll off. @hilde45 I was curious about this so I looked at the schematic of the amp. The input resistor is 500KOhms (or 470K) to ground. With an input impedance that high, the amp can be sensit... | |
Your journey with lower-watt tube amps -- Can a kit be good enough? @hilde45 I read that a few years ago and bought one of EFB kits for one of my employees who had an SCA35. If you can shoehorn it in I think it would be a good move. You can use a pair of such kits and run separate cathode circuits as well. Or a... |