dbphd
Responses from dbphd
| a Power vs Volume Question Both loudnes and volume are perceptual terms correlated with acoustic level. The knob you twirl is a level adjuster. Not all amps have the same gain. For example, McIntosh, IIRC, rated their MC 60 at 60 watts RMS 20- 20 kHz with a .5 volt input, w... | |
| Stereophile - MF Supercharger article-add 550W/ch. Atmasphere,A good empiricist needs first assure an absence of artifacts in such a demonstration. The signal generator and transducer can be sources of spurious acoustics, especially with square waves. A fast scope can monitor a generator, but I do... | |
| Stereophile - MF Supercharger article-add 550W/ch. I haven't published in nor even looked at JASA for several decades, so I am far from current. But evolution of the human auditory system occurs very slowly, over thousands of years. You have to ask yourslef why human hearing, a system evolved for ... | |
| Stereophile - MF Supercharger article-add 550W/ch. Atmasphere,My previous post was intended mainly to pull the chain of the anlog folks, but it does have some rationale. My doctorate was in psychoacoustics, my post doc in binauaral processing, but how tubes mimic human hearing escapes me. I think ... | |
| Stereophile - MF Supercharger article-add 550W/ch. Could it be that the solid state amp is relatively transparent and thus able to pass along the coloration of the tube amps so beloved by the analog folks?db | |
| Is Sony XA9000es superior to Esoteric DV 50s? For what it's worth, in the Stereophile recommended compents the XA9000ES is rated A+, the Esoteric SA-60, presumably better than the DV-50 for audio, is rated A. As they say, that knowledged and $5 will buy you a cup of coffee at Starbucks.db | |
| The Irrational But Efficacious CD Tweak I just ordered the disc from Music Direct. Thanks for the link, John.db | |
| The Irrational But Efficacious CD Tweak I repaeat Tabooe's plea: Where can you buy the disc to try it?db | |
| Ideal Volume level Ryder,I assume you mean 75-80 dB SPL with C weighting and ballistics set to slow. I find that a nice setting if I'm really listening, but I prefer 10 dB lower when I'm at my computer or reading.A look at A weighting, a scale that attempts to incor... | |
| Subwoofer tweaks Auralex SubDude is a winner for me. By isolating the sub from the floor, it smooths and extends the response. I use them with my Velodyne HGS-15 and HGS-10. Really a big improvement for not much money.db | |
| Can anyone help me start building my own poweramp? Eldartford's comment about rebuilding an old Dynaco amp reminded me of an advantenture during my undergrad days, about 50 years ago. I'd successfully graduated from Heathkit to Dynaco amps, so a friend asked, and I promised, to build a Dynaco prea... | |
| Down firing vs. normal subwoofer Chazz,I think those who argue for multiple subs do so with the idea of compensating for spectral peaks rather than localizing source.db | |
| Why HDCD did not become a dominant format? Psacanli,Please post the results of your comparison of the XA-9000ES with your 9100ES. Make sure to turn the video processing off on the 9100.db | |
| Best vintage Marantz receivers? When I was a post-doc at Stanford, I spent a month's stipend on a Model 18 that one of the grad students was able to buy at a discount because he also worked for a recording studio. I still have it, sitting on a shelf in our media room. It may hav... | |
| Why HDCD did not become a dominant format? Neither my Sony 9000ES nor my 9100ES process HDCD, but Reference HDCD discs sound great on my system. Could it be Reference recordings and not HDCD per se' that are so good?db |