atmasphere
Responses from atmasphere
| Phono stage w/automatic Load-Impedanance. Hdm, current gain designs often tend to work with a slightly different principle. In tubes, one means is called 'grounded grid' as the cathode of the tube is used as an input. With transistors, the emitter device of the semiconductor becomes the i... | |
| Strange Hum from Right Pre Channel Only OK. Leave the cables connected at the preamplifier end.Connect the other end of the cables to the amp. Do you get the hum?If yes, swap the interconnect cables left for right **at the amplifier end only**. Did the hum move or stay put? | |
| Phono stage w/automatic Load-Impedanance. Many cartridges that make 0.2mV into 100 ohms can do so into 50 ohms as well. Its a small amount of wattage, but you can see in this example that in the latter case it would be making twice as much power as the former. This has to come from somewh... | |
| Phono stage w/automatic Load-Impedanance. Apparently you think this is the only reason to load down a cartridge. If so, you're wrong. I've already explained that wide open is not always better. Maybe it is in your preamp, I wouldn't know, but we're not talking about your preamp.I am not t... | |
| Strange Hum from Right Pre Channel Only Were you using the same XLR cables with the DAC as you were with the preamp? | |
| Why so few balanced phono inputs? ^^ got it John! Thekong, you hit the nail on the head- dealers don't like to change cables- removing a tone arm cable from its connector under the 'table can be a bit of a pain. Anytime you see an XLR connection but the circuit is single-ended, it... | |
| Phono stage w/automatic Load-Impedanance. Fleib, with all due respect, rather than calling my comments BS, why don't you look into the matter? I suggest you look at the comments of JCarr (Jonathan Carr of Lyra, who is active on this forum) about the effects of cartridge loading. Or how ab... | |
| MC Phono preamp gains ^^ only if the phono stage is unstable. Loading of LOMC cartridges is all about the phono section and makes no difference to the cartridge other than reducing its output. The problem is that some phono sections act out a bit when presented with ul... | |
| Strange Hum from Right Pre Channel Only I've had it happen exactly that way a few times. Next time you have a problem, see if moving the cable at the input to the amp can make it come and go. | |
| Phono stage w/automatic Load-Impedanance. Tubes are inappropriate for a high gain stage. They're too noisy, so they employ either a SUT or a solid state high gain stage.This statement is incorrect. We have been using all-tube phono sections for LOMC cartridges for about 25 years and they ... | |
| audiphile power cords Phd, please go back and reread some of my earlier comments and you will see an answer based on measurements as to why power cords make a difference, which includes tube and solid state amps. Ketchup, I'm with Al on this one: I don't recommend havi... | |
| Strange Hum from Right Pre Channel Only An intermittent connection in the XLR cables sounds the most plausible from everything presented so far as Xti16 suggested. | |
| Phono stage w/automatic Load-Impedanance. Cartridge loading of low output moving coils is almost of no consequence unless the preamp is unstable or unhappy with ultrasonic or Radio Frequency bursts at its input.If you find that loading is making a difference with your setup, its an indica... | |
| Why so few balanced phono inputs? ^^ The thing you have to be careful about with this statement is the cable used. If a shield is involved and it is tied to pin 3 while pin 2 has the inside connection, its not going to work regardless of the impedance to ground. IOW the balanced c... | |
| Joule Electra Amp Repair Ddriveman, we could if we knew what the renovation entailed. Speaking from a lot of experience the area though, even if we did all that is known it likely would not be the same. This is because there are always nuances that are not usually not obv... |