atmasphere
Responses from atmasphere
| Experience with Downfiring Subwoofer Bass is basically omnidirectional so doesn't matter if down firing, or standard front firing. the bass will radiate in all directions. @kofibaffour This isn't exactly true. What is true is by the time your ear can sort out what bass note is bei... | |
| Tube Pre/ Class D Amp - Who has done it? @erik_squires The seemingly consistent feature among previous generations of Class D amps has been relatively low input impedance. FWIW the input impedance of our class D amps is 100K single-ended or balanced. Anything can drive them. | |
| 10dB resonant peak at 40Hz You are using a subwoofer to break up the 40Hz standing wave produced by the loudspeaker? Not to produce bass itself? @cdc Yes. | |
| GaN FET Amps vs. Traditional Class D Amps They are often described as having a more natural sound due to their minimal feedback requirements, which helps avoid harshness @mapman This bit is nonsense, just so you know. The use of GaNFETs has nothing to do with how much feedback is or is... | |
| Anyone else constantly curious about amps? A pet project of mine is the restoration of a Nobles NS-130 amp. I've had two of these in the past (in much better shape). This one is going to get a complete rebuild after I take it completely apart to refinish the chassis. Of all the EL84-based... | |
| I could have started this on the cables thread.....but.... The tube preamps I have owned and used have always been single chassis units, if this makes a difference to what you are saying. @mrdecibel It doesn't. If you don't bypass an umbilical for a solid state circuit you're asking for trouble!! | |
| I bought 4 subwoofers and I'm absolutely not doing a DBA! Hah! @erik_squires I know exactly what you mean. Everyone has different ideas and I've been told many times mine won't work. Or asked why I'm bothering and so on. But passion for the sport is passion and if we don't have that and a vision for the proje... | |
| I bought 4 subwoofers and I'm absolutely not doing a DBA! Hah! The floor to ceiling bass traps, and wall to wall traps @erik_squires IME for traps to really be effective they have to be mobile as the bass energy changes frequency; IOW they are impractical. I’ve watched audiophile friends of mine struggle ... | |
| I could have started this on the cables thread.....but.... @mrdecibel The use of an umbilical means that the wiring within must not cause a Voltage drop for the tubes used and it must be bypassed at the preamp end to prevent noise being a problem! If its not bypassed properly, the stray inductance can res... | |
| I bought 4 subwoofers and I'm absolutely not doing a DBA! Hah! @erik_squires Here's something to think about. The reason a DBA works is by breaking up standing waves. But if you don't want to have multiple subs for that, one way you could handle that is by having one woofer aimed at a nearby wall at 45 degree... | |
| GaN FET Amps vs. Traditional Class D Amps First you would have to describe what is meant by 'traditional' class D designed amplifiers. | |
| Anyone else constantly curious about amps? I've been amp curious for a very long time. Recently I've been interested in some of the lower power pentodes that are also meant to be easy to drive, like the EL95 and EL84. If amps based on these tubes are designed properly there's not an SET m... | |
| Question for Atma-sphere, will expensive power cables improve your amplifiers? @faustuss I explained that earlier in this thread but in a nutshell, Voltage drop. | |
| 10dB resonant peak at 40Hz My personal conclusion: this is a room, not a speaker problem. There is nothing wrong with the speakers per say. @cdc There's no point to bass traps and/or room correction until you have the standing wave issue solved. That will take care of 95... | |
| is McIntosh known for good dynamics? My Mc611's have a low damping factor of 40 @steve59 No speaker made needs a damping factor over 20. Additional damping factor (which is a measure of output impedance) won't give you any greater bass impact. |