atmasphere
Responses from atmasphere
| Soundlab speakers...how reliable? In January Soundlab introduced a new backpanel which not only made the speaker a lot easier to drive but also has it sounding better, regardless of the amplifier used. | |
| Entreq ground conditioners - what's the theory? You can sort out easily enough if the equipment is properly grounded by using a DVM. Connect one lead to the chassis and one to the center pin of the IEC connection or power cord. You should measure a short.Then connect to the ground of the input ... | |
| VTF, VTA, SRA, and 92 degrees - question QRP is doing some amazing work. We did a project through them recently and the final pressings were nearly as silent as the original lacquers (which is to say, so quiet as to rival digital recordings)!It may be that the copy you got was warped, bu... | |
| What's with 4 ohm speakers? Won't draw any conclusions but I encourage anybody else to try a similar experiment. Results do go against standard convention. With closer spacing, or other factors, results may vary.Actually this sounds pretty predictable to me. The Plinius can ... | |
| Entreq ground conditioners - what's the theory? Agear, having had some experience with some of the manufacturers on your list, I have to agree. Others on that list did their homework.FWIW, very few if any manufacturers from the 1950s got their grounding right. I work on Ampex stuff all the time... | |
| VTF, VTA, SRA, and 92 degrees - question ^^ 'poor quality control'?? nah- certainly no worse than any other format. Most new LPs I see these days are really well done. | |
| Preamp Noise with High-Efficiency Speakers Yingtonggao, did you try using a ground cheater on the power cord of the preamp? If it works it is not a solution, but an indicator. | |
| Preamp Noise with High-Efficiency Speakers Actually if a ground loop is present it will more likely manifest as a buzz. It is rare to see a ground loop only produce 60Hz! | |
| Entreq ground conditioners - what's the theory? Davehrab got it right. In order to pass safety requirements the equipment must be grounded. The problem is that if the electronics are grounded, ground loops can result, which usually results in a buzz of some sort. So if the designer is using goo... | |
| Has anyone tried a "leather" turntable mat? Sbrownnw, I do. Csontos is right. Each bit of leather that you work with is always different from the one before.We've not mentioned brain-tanning yet but that technique (which involves a lot more labor) yields a much softer and more supple material. | |
| Preamp Noise with High-Efficiency Speakers Yingtonggao, what this suggests to me is what I mentioned in my first post on this thread. It may be that the preamps you have tried so far have troubles with ground loops, but it could also be a problem in the amplifiers. Have you tried any of th... | |
| VTF, VTA, SRA, and 92 degrees - question I am sure some of you have noticed that different records seem to need a slightly different VTA. The reason for this is two-fold; first the LP is a different thickness. The second is the the cutter stylus on the cutterhead that cut the lacquer for... | |
| High Current vs high power Here is a link that might help some with this equipment matching issue: http://www.atma-sphere.com/Resources/Paradigms_in_Amplifier_Design.phpAl is correct- THD is the sort of thing that may well have a reverse correlation with listening experienc... | |
| Preamp Noise with High-Efficiency Speakers Yingtonggao, what you report is a buzz. But you did not report hiss, which says to me that the gain is not the culprit. There is some hookup (like a ground loop of a poorly shielded cable) which is allowing the buzz to manifest. | |
| High Current vs high power The Rowland 8Ti is a good example of what I was talking about.Into 4 ohms it is rated 400 watts, but the current figure states(from the website): 50 amps continuous, 100 amps peakIts pretty obvious this has nothing to do with power! 50 amps contin... |