almarg
Responses from almarg
| Is powerfull Amps only for low sensitivity speakes? Kalali 1-20-2018 The OTLs are exceptions because they tend to have an un-tube like very low output impedance thus a higher than average damping factor. Hi Kalali,This is a rare instance in which I must correct an oversight in your usually sage com... | |
| Do I need a sut? 150 watts into 8 ohms corresponds to about 34.6 volts. 24 db less than that is about 2.18 volts. 2.18 volts divided by 0.05 mv is a voltage multiplication of 43,600 times, which is about 93 db.So to be able to drive the amp to full power when the ... | |
| Do I need a sut? Regarding the adequacy of 76 db of SUT + phono stage gain, that is 7 db more than the OP presently has. For a typical rotary volume control, which when viewed as a clock dial can be adjusted between limits of say 6:30 or 7 o’clock at min and 5 or ... | |
| Absolute top tier DAC for standard res Redbook CD Matt, I enjoyed watching all four of the videos, including the one that just went up with the live piano playing. And on my computers, at least, the somewhat low volume and low lighting weren’t any problem at all.In fact to me the only slight down... | |
| Do I need a sut? Thanks, Itsjustme! To clarify regarding the Herron VTPH-2 specifically, the input stage it provides for LOMC cartridges utilizes a FET (Field Effect Transistor). Consequently, as I mentioned earlier, it has an input impedance that for practical pu... | |
| Do I need a sut? Thanks, John (Jmcgrogan2).Jeff, as the others have indicated SUTs are almost always designed to be loaded with 47K, and if improperly loaded can exhibit ringing or other undesirable effects. Since the MC input circuit of the VTPH-2 has a near infi... | |
| Buyer wants copy of passport? There have been at least several occasions during the past year or two in which spam posts have appeared here offering fake passports, as well as other fake documents such as drivers’ licenses. In fact I think there was such a post just this morni... | |
| Tube tester recommendation! Not infrequently Hickok tube testers appear for sale for reasonable prices at forums and sites which serve the antique radio collecting community. For example, this listing offering a model 534 for $325 appeared just three days ago, although as yo... | |
| Is powerfull Amps only for low sensitivity speakes? Sounds good, Ozan! The Sonic Frontiers Line 3 is a fully balanced design, so it can certainly be assumed that it provides a balanced pair of signals on its XLR output connectors. And given the very high 300K input impedance of the GS150 there cert... | |
| Absolute top tier DAC for standard res Redbook CD The writeup by Peter Mitchell which Shadorne provided (thanks!) is excellent. But to be precise, the architecture it describes for a "conventional" DAC, in which "the resistors are supposed to be scaled in exact 2:1 ratios," is not R2R. In an... | |
| Is powerfull Amps only for low sensitivity speakes? I took a look at John Atkinson’s measurements of your speakers and at the description and specs of the GS150, and as far as I can tell from those documents the speakers and amp should be a fine pairing.I assume that your preamp can provide balance... | |
| What’s in your system today that you also had 10 years ago? SOTA Sapphire turntable.Magnepan Unitrac tonearm.Stax Lambda Pro headphones (but with a different Stax amplifier).REL (Radio Engineering Laboratories) Precedent FM tuner.Tandberg 3004 cassette deck.Best regards,-- Al | |
| Absolute top tier DAC for standard res Redbook CD @gdhal Hi Hal,No, my statement was not intended to imply that musical information is lost when data having more bits per sample and a lower sample rate is converted to fewer bits per sample at a higher sample rate. From a theoretical standpoint ... | |
| Absolute top tier DAC for standard res Redbook CD Hi Hal,I would begin my answer to your question just above by noting the second sentence in the Wikipedia writeup on delta-sigma which you linked to: It [delta-sigma] is also used to convert high bit-count, low-frequency digital signals into lowe... | |
| Absolute top tier DAC for standard res Redbook CD Hi Hal,I would put it that delta-sigma is a **less direct** way of accomplishing D/A conversion than R2R. However, the results of BOTH approaches are approximations, in the sense that what comes out does not correspond to what goes in to an infini... |