atmasphere
Responses from atmasphere
| Anyone Know Where I should Look to Figure Out This Hum? A *hum* is 60Hz *only*.A *buzz* is based usually on 120Hz but can be heard in the tweeter.So we might have a nomenclature issue. A ground loop would produce more of a buzz than a hum, at least in every case I've encountered!Lamm tech said they fou... | |
| 100W, 200W, or 300W? My room is a little smaller than yours: about 15x15x10 high. Sub is eventually on the TODO list to fill in the bottom end - but after amp and streamer upgrades.@eisenb11 If your room really is these dimensions then I don’t think you’re going to ne... | |
| Is Sub Gain Set&Forget Across Music Genres a Fallacy? I was just wondering if it is even possible to reach that level of simplicity and ease with one (ideally for me) or more subs after the initial calibration @kren0006 Of course is possible! The sub settings have nothing whatsoever to do with mu... | |
| Empire 698 turntable 'Circlip' is the expression, and yes they are a bit tricky. IIRC, the mount on the tower is slightly recessed, making it difficult for the circlip to come out on its own. Again IIRC, you should be able to extract it with a medium to small flat bla... | |
| Empire 698 turntable Are you sure that your 698 isn't just needing a bit of adjustment? The 'table is suspended by the springs which are fixed to the subchassis using wingnuts. The wingnuts are used to level the 'table.At any rate the springs are attached to their tow... | |
| The Audio Alto R101 : A special speaker for SET amplifiers and small acoustic spaces If you love tube based SET amplifiers or low power Solid State amplifiers (think Pass Labs XA-25) ***and*** have a relatively small acoustic space this might be a great speaker for your system.Emphasis added: the low sensitivity of this speaker ... | |
| Why do most phono preamps lack XLR input even thought cartridges are naturally balanced? @oldears If its not humming I would not worry, but I suspect there is no need for the 'drain' wire, as the preamp is likely electrically grounded via the ground connection of the AC power cord.We've been making DIN to XLR phono cables for decades... | |
| Why do most phono preamps lack XLR input even thought cartridges are naturally balanced? @luisma31 Make sure the turntable/tonearm ground is tied to pin 1 of the phono input XLRs. | |
| Turntable feedback rumble problems with new sub @ronribbons I used to have that problem. I placed a set of bearings beneath the equipment stand, allowing it to be coupled to the floor, but otherwise able to move from side to side a little bit. This solved the footfall thing.I used Aurios Pro be... | |
| Turntable feedback rumble problems with new sub Unfortunately the table and speakers sit on a big media cabinet from Design Within Reach which is not ideal.Sounds like the media cabinet isn't doing its job. Can you hear foot falls when you walk past the turntable while its playing? | |
| Why do most phono preamps lack XLR input even thought cartridges are naturally balanced? How much advantage did you find by adding shielding of the XLR over just using a differential input w.r.t. noise?Almost none. I ran unshielded tonearm cable in my home system for some years. You could crank up the volume and no hum or buzz from th... | |
| Why do most phono preamps lack XLR input even thought cartridges are naturally balanced? Gains of both amplifiers have to be exactly the same, otherwise common mode noise will get converted to normal mode signal. It requires some form of cross-feedback to keep gains exactly the same. Phono preamp in addition has RIAA equalization... | |
| Amps XLR vs RCA input impedance difference. Also, be aware that there are a few amp designs, such as many fully balanced Audio Research amps which ONLY provide XLR inputs, that will not work properly unless they are provided with a balanced pair of input signals.FWIW, the higher the Comm... | |
| Speaker load on tube amplifier... So, lower plate load is better, from what I'm hearing you say, and this is because it's easier on the amp, less current to control, less heat to wield? @listening99 Not in this case- the reason I would go with the 7581/6L6 is that apparently the... | |
| Speaker load on tube amplifier... The KT88 needs about 6Kohms as a plate load (plate to plate). The 6L6 needs about 4.5K (the 7581 is a variant). So on paper it appears that the 7581 would be more suitable although there would be a bit less power. But what is an unknown is what th... |