almarg
Responses from almarg
| A DAC that crushes price vs. performance ratio I agree with Charles' comment as well. I would add that the knowledge and experience that goes into the design of the printed circuit board itself can make a big difference in the performance of a DAC. How signals, power, and grounds are routed... | |
| A DAC that crushes price vs. performance ratio To add to the foregoing comments, it’s worth noting that the DAC uses eight of the TDA1543 d/a converter chips (each of which can handle two channels), in "a complex parallel configuration." And eight chips are used even though the DAC only provid... | |
| cart/phono stage compatibility - Help! The cartridge has a rated output of 0.35 mv, and the phono stage provides a choice of gains of either 70 db or 76 db, and a wide selection of load impedances. I don't see any compatibility problems with the 70 db setting. It is possible with th... | |
| Kinki Studio EX-M1 @benlzy, it appears that the AC in Singapore is nominally 230 volts and 50 Hz. If you have or can obtain a multimeter it would be good to know what the actual AC voltage is, because if it is significantly higher than 230 that could contribute to t... | |
| Autoformer vs Speaker impedance Curve Ralph, would I be correct in thinking that the low B+ voltages that must be used for the 6AS7G power tubes in your amps, compared to the much higher B+ that is supplied to the tube types used in most non-OTL amps, would tend to increase the degree... | |
| Kinki Studio EX-M1 When the amp is either idling or not putting out much power and its temperature has warmed up to a stable state its temperature will be a certain number of degrees above the ambient (surrounding) temperature, whatever that ambient temperature may ... | |
| Autoformer vs Speaker impedance Curve Back in 2010 I asked Ralph about that statement in this thread. Here are excerpts from our discussion: Atmasphere: Power cords: a 2V drop across a power cord can rob a tube amplifier of as much as 40% of its output power! Cripes! You're trying ... | |
| Which subwoofers have at least a 20k input impedance as required for ARC preamp Thanks for the follow-up, @4425. Running balanced into the amp and unbalanced into the sub will result in a very slight imbalance between the impedances of the two signal lines in the balanced signal pair, relative to ground. That will result in a... | |
| Balanced Signal Path Question Yup :-)Probably, that is. I would think it to be very likely that the TVC isolates the ground connection on its input from its output connections, via the transformer. Assuming that is the case (and the manufacturer could presumably confirm that, ... | |
| Which subwoofers have at least a 20k input impedance as required for ARC preamp Thanks for your input, Lalit. Well, the JL F212 v2 has a balanced input impedance of 10K. Certainly not an ideal load for the LS28 (which has the same 20K minimum load impedance spec as most ARC line stages and preamps). And the paralleled inpu... | |
| Which subwoofers have at least a 20k input impedance as required for ARC preamp @4425, to answer your earlier question 20K in parallel with 300K is 18.75K, and 20K in parallel with 1M is 19.6K. I doubt that there would be a noticeable sonic difference between 20K and 18.75K. However I suspect that 20K already represents a sli... | |
| company purchased--founder-designer leaves--establishes new smaller company Mike Moffat founded Theta Digital and later co-founded Schiit Audio.Dave Reich founded Classe and later (after working for Steve McCormack for a few years) became chief engineer at Theta Digital.A few years after selling his legendary company in t... | |
| Which subwoofers have at least a 20k input impedance as required for ARC preamp Most or all of the JL Audio Gotham and Fathom series subs have unbalanced input impedances of 50K. (Their balanced input impedances are only 10K). Those numbers are indicated in their manuals, which are linked to under the "Support" tab that appea... | |
| A DAC that crushes price vs. performance ratio @Snopro Thanks for your comment, Joe. I had considered the possibility of waiting for the SIT-3, but I decided that it wouldn’t be suitable for my purposes. One reason being its VERY low gain (spec’d at 11.5 db), which would make it a non-starter ... | |
| A DAC that crushes price vs. performance ratio @d2girls, thanks for the tip!The manual for the XA25 states that it takes about an hour to fully warm up, and that coincides with the amount of time I have observed it to take to reach a stable temperature on its heat sinks. So rather than leavi... |