atmasphere
Responses from atmasphere
| What Class D amps will drive a 2 ohm load Hey George,Here's a start to explaining of what @atdavid is talking abouthttps://www.stereophile.com/reference/707heavy/index.htmlYou can see that because class D amp output devices are either on or off, there isn't a portion of their operation th... | |
| new GAN amplifier So you believe the atmasphere statement, that his OTL’s can do a nice job of driving the Wilson Alexia’s as well?? also delusional🤦♂️ :) He had the amps built to match the finish of the speakers- here's what they looked like:http://www.theaudio... | |
| To Float or not to Float... I also have a pair of DeHavilland mono block amps with the same ground/float switches, and in the manual it states that leaving the switch in the "float" position may result in a "cleaner sound". At any rate, a fully functioning grounded powe... | |
| Stereo tube amplifier recommendation with Bricasti M12 and Devore O/96 I'd look at an amp with balanced inputs and about 50-60 watts; that will do nicely with that speaker. | |
| new GAN amplifier @georgehifi Loudspeaker efficiency 101:Less efficient loudspeakers tend to have more voice coil heating and so are more compressed than loudspeakers of higher efficiency:http://www.aes.org/e-lib/browse.cfm?elib=5251https://www.stereophile.com/refe... | |
| new GAN amplifier because the speakers also have to be least colored most dynamic you can get, unfortunately that usually means they’re hard to drive. This statement is false. Less efficient speakers also tend to be less dynamic due to voice coil heating. A second... | |
| Amps & Preamps Why are you surprised? | |
| The sound of electrolytic capacitors failing I've been assuming it takes that long for the caps to recondition (or whatever the term is). Is there a way to measure if the caps are in spec?'Form up' is the technical phrase, and yes. They would have to be measured when cold and discharged t... | |
| new GAN amplifier @atdavid is correct. By the time anyone had modified a MOSFET amp to run with BJTs it would be an entirely different amplifier. There simply would be no way to compare 'before' and 'after'. Its highly unlikely that anyone ever did a mod like this ... | |
| The sound of electrolytic capacitors failing Depending on the severity of the failure it can manifest in several waysIncreased humless bandwidth extension in either direction (this is due to the audio circuit interacting with power supply components that it normally would not) and less detai... | |
| Phono Preamp Tube Rush the only reason I raised the issue of Johnson noise was in response to a question about whether any tube-based phono stages are quiet enough for hiss to be inaudible when one’s ear is placed against the speaker, while a record is not being pla... | |
| Looking for inexpensive preamp FWIW detail can easily exist without brightness. Do you need a phono section? | |
| Help with a mystery vintage amp head No. The jacks and the pots are used to set the bias on the power tubes. It requires that the 1/4" plug be connected to a meter; without seeing the circuit closer I can't say if it would be set to DC volts are DC amps, but in the end you set the me... | |
| Phono Preamp Tube Rush I then extrapolated from that number to the result corresponding to the 12 ohm resistance of my cartridge, over a 20 kHz bandwidth:@almarg Most LOMC cartridges have bandwidth well past 20KHz- most have no worries going to 40KHz.if executed in the... | |
| Phono Preamp Tube Rush I would like just a little more gain for ultra low output cartridges and I believe from what I have read that a balance design should have lower noise levels. Cartridges are balanced to begin with.The reduced noise can be significant. For a give... |