atmasphere
Responses from atmasphere
| Which preamps use 6922/6DJ8 tubes? 6922 is a great tube for line stages - better than 12AX7 / 12AT7 / 12AU7 imo. This statement is inaccurate. The 6922, 6DJ8 and other frame grid triodes are not intended for audio. They are quite linear, which has been the attraction, but they ... | |
| Sensitivity 86 v 90 @lloydc Efficiency is 1 Watt/1 meter. With this spec, the speaker is fed 1 Watt for the measurement. With Sensitivity, the speaker is fed 2.83 Volts instead. 2.83 Volts into 8 Ohms is 1 Watt. Into 4 Ohms its 2 Watts. So subtract 3dB from the e... | |
| point-to-point or solder to CB: what should I be considering? Both approaches can work fine. The design is the issue- if the designer did not address the layout requirements, it can go south in either case. It is usually easier to update and repair when point to point wiring is used in tube equipment. | |
| Power conditioner wire gauge? Serious issue Elgar still makes those. I've not tried them to see how they compare to their older power conditioners. So I can speak to how well they will work, but I suspect they will work just fine. The ones I've seen allow you more output voltages and also ... | |
| What Does It Take To Surpass A SME V? I bought balanced Wireworld Silver Eclipse 8 interconnects and also grabbed a couple of pairs of Wireworld Micro Eclipse 8 tone arm wiring with XLR terminations with straight and SME style DIN plugs. This way I can also use the SME V or the Dynav... | |
| Concerningly loud pops in vinyl playback Thinking back I’ve certainly noticed that the Ref preamps in general (I’ve had two now) do seem to "enhance" the record surface noise a bit versus traditional attenuator-based designs like VAC. @mulveling If the preamp seems to enhance surfac... | |
| Power conditioner wire gauge? Serious issue is this Elgar thing you mention also called an AC power supply? @thespeakerdude Elgar still makes those. I've not tried them to see how they compare to their older power conditioners. So I can speak to how well they will work, but I suspect the... | |
| The 300B World The rectifier tube should be a consideration in 300B SET build. In a traditional single-ended 300b amp the current draw is constant, from idle to full power. That means the voltage drop across the rectifier is constant too. If you are hearing d... | |
| Power conditioner wire gauge? Serious issue Since the action of conditioning the power must consume some of it, the conditioners of which you speak presumably have power supplies of their own to make good the loss. @clearthinker They do. The PS Audio, if I understand correctly, employ... | |
| Is a noisy tube a bad sounding tube When I turn the gain up to maximum there is some minor tube noise I can hear when I put my ear to the speakers on side only. If its only that loud you have no worries. @tablejockey gave you good advice. | |
| Audio Research Reference 150 - buzzing input transformer Is there anything that can cause the transformer to overheat and melt inside? The noise was caused by a vibration of the plates inside the transformer. Does anyone know how hot the input transformer can get? @filipm To the first comment (so... | |
| Concerningly loud pops in vinyl playback I've put it on the phono stage for now (along with tonearm ground) BUT being a Hagerman Trumpet, it takes DC from a SMPS wall wart that's 2 prongs. So there's no connection to earth ground. So I guess that's kind of a bummer if the intention of t... | |
| Power conditioner wire gauge? Serious issue All power conditioners steal power. @clearthinker This isn't entirely correct. A good power conditioner will do nothing of the sort. Many 'conditioners' are passive devices and so probably do limit current (and so have a voltage drop) but if... | |
| Atma-Sphere Class D… Amazing The other part of the question....can they be made differential from INPUT to OUTPUT, as many conventional SSs are (ML, Pass,Moon, etc)? Is there a point? @fredag Things are a bit different when you’re employing switching technology, but FWIW... | |
| Atma-Sphere Class D… Amazing @fredag They have a balanced differential input (and RCA inputs are provided too). I run them balanced at home. |