atmasphere

Responses from atmasphere

Phonostage/preamp recommendations. Parasound JC3 Jr.?
Example I may or may not want an MM cart in the future or a different MC and I would want to buy something now that can accommodate a fairly large variety of options vs something that’s more specific to one type of setup. Buy once cry once if ... 
Installed bulk foil resistors in phono amp
Yes, I've heard good things about that tube.A 10K grid stop resistor will give you considerably more RFI protection.  
Cartridge loading
I run my Benz Wood SL "unloaded" at 47K on my Pass XP15. It sounds the most open, with airier highs, but admittedly I'd be hard pressed to tell the difference between 47K and 1000 ohms, maybe even 500 ohms. Seems the Pass XP15 just isn't that... 
Installed bulk foil resistors in phono amp
Good. What's the input tube? 
Audio Kinesis Swarm Subwoofer Awarded 2019 Golden Ear Award by Robert E. Greene
@luisma31  The bottom octave is generally considered to be 20Hz to 40Hz, the second octave 40-80Hz and so on. 80Hz has a bit of a special meaning to subwoofers and the human ear because it is at about this frequency that bass appears omnidirection... 
At what price point do I run into diminishing returns on an MC Cartridge?
The ability of the tone arm to properly track the cartridge is far more important than what cartridge you have! If anything this is the Achilles heel of LP playback as most people don't have their analog set up properly.  
Cartridge loading
The Zu Denon is very much a "salt to taste" kind of cartridge when it comes to loading. When I used one it could indeed sound quite different when using 100/200/300/500/1000 ohms. And Zu will tell you there is no wrong answer here, just use w... 
Time to buy a class D amp?
We're still working with prototypes. They have had 100 watts and double power into 4 ohms. Since last spring, they have had GaNFET output sections. We compare them directly against our tube OTLs as a reference. Mostly we've been sorting out layout... 
Installed bulk foil resistors in phono amp
Any stopping resistors at the input of that preamp? 
Cartridge loading
@stereo5 47K is the standard for phono cartridge loading. I am very happy at 1K ohms, I was just kind of wondering why.I explained why in my prior post. With a higher impedance load on the cartridge, the cantilever is more able to trace high frequ... 
Cartridge loading
Cartridge loading is for the benefit of the phono section, not the cartridge!It prevents the inductance of the cartridge and the capacitance of the tone arm interconnect cable from creating a resonant circuit, by detuning it. The resonant circuit ... 
Eh hem!...Subwoofers... What do ya know?
I’ve always been able to hear where they are . And thats not good .Then they are running higher than 80Hz.To hear sound below 30 you need way too much volume. That would disturb my neighbors below.And the peaks, valleys, and echo slap are too much... 
Time to buy a class D amp?
Would you say there is inherent limitation in the phase shift that is a factor of the comparator speed, digital logic delays, and turn-off time of the FET? What do you think a practical limit is on that? That may put a practical limit of a few-... 
Adjusting tube bias...
Its based on both the amplifier and the EL34 characteristics. For any EL34 going in that amp the bias setting will be the same. Be sure to check it one hour after warmup- you may find it higher. The correct bias setting will be what the reading is... 
Amplifier Hum - Only Amp Connected
This sounds to me like a power supply problem such as a failing filter capacitor in the power supply. Such a part can indeed cause more hum in one channel than the other but the problem would be in both. Sometimes you might be able to get it to st...