atmasphere
Responses from atmasphere
| Amps Atma-Sphere M-60 Mono blocks OTL design Driving easier speaker loads (high impedance) should be beneficial for all types of amplifiers and not limited to just tube power amplifiers. Charles+1 It continues to amaze me how many people don't get this basic fact! | |
| Class D is just Dandy! You can use a Tube stage to slow down the signal or other circuit designs in solid stage to do that as well. Agreed- **and** FWIW, there does not have to be anything slow about tubes. Keep in mind that in order for color TV to have existed, tubes ... | |
| Amps Atma-Sphere M-60 Mono blocks OTL design Good!How do you have them wired? | |
| Slight hum in my amp. Is this normal? ^^ Yes- and that is what we are dealing with when the power transformer in most audio equipment is involved. Its best to block the DC prior to a transformer- otherwise you have to use a very sophisticated power conditioner! | |
| Slight hum in my amp. Is this normal? @almarg , that's true, and if you look at my initial post I mentioned that DC on the line can also be interpreted as a 2nd harmonic. Its pretty clear that filtering using a transformer is an inefficient method; a DC blocker is a lot cheaper!FWIW, ... | |
| Amps Atma-Sphere M-60 Mono blocks OTL design If you put the ZERO after the crossovers then the crossovers won't be operating the way they were supposed to. So before.Now if I got this right, your speakers are home made? Could you build 16-ohm speakers? Then no need for the ZEROs at all. | |
| Slight hum in my amp. Is this normal? @jea48 , I thought I did. One more try:DC on the line occurs when 1/2 of the AC line (for example, positive going portion of the AC waveform) is loaded while the other half is not.Space heaters or hair dryers on half power do just exactly that. So... | |
| Need Amp Advice ^^ :) that's pretty funny. You can't overheat the tubes in an M-60 like that!In fact on that speaker you could run the amp all day at full clipping and not do that. IOW your metaphor doesn't work in this case. The amp isn't towing a Bayliner or an... | |
| Slight hum in my amp. Is this normal? You can have DC on the line and oddly enough, it can be passed through transformers. It could also be considered a 2nd harmonic as basically its caused by loading on 1/2 of the AC line and so the AC waveform can be offset slightly just as if it we... | |
| Need Amp Advice We've got a number of customers that use the B&W 802s with our M-60s, so apparently its a rather tube-friendly speaker. Rather than going the brute force powerhouse approach, you might consider going the finesse route instead- it sounds like t... | |
| Has anyone tried resistor loading the primary of a MC SUT ? Ralph, whether it is only the phonostage that needs loading or also the cartridge is debatable. The general terminology is "cartridge loading". So adding resistors to primary should load and damp the cartridge. Actually, regarding whether its th... | |
| Amps Atma-Sphere M-60 Mono blocks OTL design It shouldn't as long as both are properly crossed over. The portions of the transformer's operation that are out of band with the crossover will see a fairly high impedance which will be transformed to a high impedance to the amplifier. Worth a tr... | |
| Measurements - Clearly Explained @erik_squires you may also find this article interesting (written by the chief engineer of ElectroVoice): http://www.dissident-audio.com/Loudspeakers/CriticalLSDamping.pdf | |
| Has anyone tried resistor loading the primary of a MC SUT ? There is little point to loading the input side.The reason is that most of the loading issues that you will hear are caused by the transformer itself and not what is driving it. The loading will be different depending on the cartridge used, but th... | |
| Amp current - how much high current to go for This speaker is relatively easy to drive (for example would be a good match with most of our amps, which are tube). I think you will find speaker placement to be a far better investment of your time than that spent looking for a new amplifier. How... |