almarg
Responses from almarg
| How much gain is needed in a Phono Preamp for a 0.2 to 0.3mv low output moving coil? With the Herron you have the added advantage of being able to easily switch from 64 to 69 Db of gain just by swapping out two tubes. I'm not sure that is true, Analogluvr. I believe I recall someone stating in a thread some time ago that he w... | |
| Voltage source vs. current source amplifiers Regarding the McIntosh solid state amps that have identical maximum power ratings into 8, 4, and 2 ohms, paradoxically they are best considered to be voltage source amps. They are a special case among solid state amps due to their use of autoforme... | |
| I'll Take "Songs About People" for $200 Onhwy61, although it's completely unrelated, your mention that there really was a "Girl from Ipanema" somehow reminded me of the story of The Four Seasons' "Rag Doll." Although I don't particularly care for the song, the story behind it involves ... | |
| I'll Take "Songs About People" for $200 Thanks, Jon. You are correct of course regarding the authorship and first recording of the song. The reason I mentioned the NGDB is that I believe their recording was the version that had the greatest commercial success, more so than Mr. Walker'... | |
| I'll Take "Songs About People" for $200 A few more:"Creeque Alley" -- The Mamas & The Papas (about themselves and others)"Vincent" -- Don McLean (about Van Gogh)"Bo Diddley" -- Bo Diddley (well, the lyrics refer to himself by his stage name repeatedly, although it may not be truly ... | |
| $500 USB cable Hi Chris,The two sentences you quoted are referring to two different things. The first sentence refers to the likelihood that under normal circumstances the circuit receiving the data will not mistake a 1 for a 0, or vice versa, despite the presen... | |
| How much gain is needed in a Phono Preamp for a 0.2 to 0.3mv low output moving coil? As usual Larryi makes an excellent point, in this case about the relevance of line stage gain and amplifier sensitivity. I see in one of the OP’s recent posts that he has recently purchased an ARC REF 5SE line stage (12 db gain for its balanced ou... | |
| $500 USB cable The statement attributed to Mr. Aud does not reflect how a USB interface operates. First of all USB communicates data via a differential pair of signals, which greatly enhances noise immunity. The receiving circuitry just has to determine which of... | |
| Why are low impedance speakers harder to drive than high impedance speakers Am I close???? You’re better than close; that’s exactly right :-)I’ll mention also that the following equations can be derived by substituting some of the terms in equation 2 in your post above into equation 1, and doing some algebraic rearrangeme... | |
| Need Help to Understand Issue with Volume Control The root cause of the problem is that the preamp section of the CAP-101 has an **extremely** high gain of 31.5 db. Meaning that it provides 31.5 db of gain when its volume control is set to max, which is how preamp gains are defined. It also has a... | |
| Synergistic Red Fuse ... Geoff, yes, I agree with your post just above. I’ll add that there are practical reasons why a manufacturer might choose not to seek a patent, such as the attorney costs that may be involved. And perhaps also the amount of time that is required to... | |
| Synergistic Red Fuse ... No, I haven’t Geoff, although I haven’t ever looked very thoroughly. BTW, an improvement of an existing invention can certainly be patentable in many cases. It just has to meet the basic requirements for any patent, namely being new (meaning the i... | |
| Synergistic Red Fuse ... It almost sounds like you're making some sort of comparison between aftermarket fuses and perpetual motion machines but maybe I'm reading too much into your post.Yes, you are reading too much into my post. But thanks for the award :-) Regar... | |
| Synergistic Red Fuse ... Hi Frank,As a point of information, the U.S. Patent and Trademark Office does not verify that an invention that is the subject of a patent application works as claimed. Although they will refuse to grant a patent for an invention that is patentl... | |
| Why are low impedance speakers harder to drive than high impedance speakers I’ll add a few comments to Charles’ excellent answers.Swingfingers, first let’s change the word "sensitivity" in your question to "efficiency." Speaker sensitivity is usually defined on the basis of an input to the speaker of 2.83 volts, rather th... |