almarg
Responses from almarg
| Ohm Walsh Micro Talls: who's actually heard 'em? By *set up* are you referring specifically to the EQ I used, or by *set up* are you including any system that measures flat at the listening position?Any system, unless the measurement equipment is extremely sophisticated and has response characte... | |
| Ohm Walsh Micro Talls: who's actually heard 'em? I remember one time using an Audio Control C-101 equalizer to EQ my system's room response so it measured flat. The Audio Control unit came with a microphone and automatic EQ software to enable this to be done.The funny thing is the results absolu... | |
| Dream system - but no aftermarket power cords I agree with the several people who have suggested that the noise issue, which does indeed sound like ground loop noise, probably originates within the system. Ground loop issues are usually caused by interaction of three factors: Certain characte... | |
| I need help - Better DAC or NEW CD player? Kijanki and 4est,The Benchmark DAC and the Wavelength/Ayre DACs are both asynchronous, and neither is "adaptive." Meaning that in both cases the d/a conversion process is accomplished with a clock that is independent of the computer's clock and th... | |
| Ferrite Chokes on ALL pwer cables-bad? RPG -- In my previous comment I should have referred more broadly to the return conductor of unbalanced interconnects, not specifically to the shield. My comment and the contents of the paper I linked to apply to all unbalanced interconnects, rega... | |
| Ferrite Chokes on ALL pwer cables-bad? Keep in mind that if your equipment is connected via single-ended (rca) interconnects, the most significant contributor to system noise (assuming your individual components have good noise performance) may not be the incoming power at all.See the ... | |
| 45 tube types Sounds to me like you are in luck!Here is a datasheet on the CX-345, which as you'll see speaks of it as if it were a 45.I compared the spec numbers with those of a 45 that appear in a reprint of an early tube manual I have. There are a few differ... | |
| 45 tube types Following my earlier post, I received an informative communication from member Audiofeil, who indicated the possibility that variants of the 45 might have been produced under the designations 245 and/or 345, with identical specs and differing only... | |
| 45 tube types Are there variations on the 45 tube, numbered in some other way, that I'm simply not seeing?I'm pretty certain the answer is "no."You might want to take out a subscription to Antique Radio Classified, which would allow you to place a free want ad ... | |
| really? .89c ground lifters? The following paper, by Bill Whitlock of Jensen Transformers, presents a good explanation of why equipment connected via unbalanced interfaces (i.e., rca cables) is inherently prone to the kinds of problems that have been mentioned, and presents s... | |
| SET Preamps Why is a simple single-ended triode able to give 21st-century state-of-the-art performance in a preamp circuit, while similar performance in the power amp seems to require ultralinear push-pull circuits or something even fancier? Simply put, the p... | |
| DIY ground wire Would this cause any damage?I am not an electrical engineer, just a tinkerer, so I'll leave it to the experts.I am an electrical engineer, and I think it makes no sense.With a fully balanced amp, it very likely would cause damage, because since bo... | |
| Where does your user name come from? Mine is a concatenation of my first name and my wife's first name.-- Al | |
| Wavac PR-T1 thoughts? too high of an output resistance coupled with too high of an input resistance means not enough signal gets through?No, the main problem is that neither impedance, especially the preamp output impedance, is likely to be perfectly constant with freq... | |
| Running 4 speakers from a 2-channel amp Jim -- Thanks for the update. Enjoy!Kijanki -- That's an interesting thought, which I hadn't previously seen stated.A series connection, whether of two woofers within an enclosure, or of two series connected speakers, would have to be done such th... |