kijanki
Responses from kijanki
| Direct optical out of Mac vs USB asynchronous I suspect Toslink from Mac would definitely benefit from reclocking. Optical is great avoiding ground loops, has no transmission line effects and is immune to ambient electrical noise, but because of slow transitions it suffers from the system noi... | |
| USB cable hype Axle, I remember from Stereophile test of AE that jitter on analog (jitter artifacts) were much worse (about 5x) than optical out. USB cable that does not use +5V supply for anything should not have it. Also shielding should be as good as possible. | |
| USB cable hype Axle, Bulk Transfer looks good but I wouldn't mind Asynchronous with resend. As long as all data gets to buffer jitter doesn't matter since buffer removed timing. New timing is recreated with new stable internal clock. The problem still is compute... | |
| USB cable hype Axle, I'm assuming, that without resending it would be 1ms gap. Not bad if it happens once but can sound pretty bad if frames are dropped often. I found some info and interesting computer audio FAQ site:http://www.thewelltemperedcomputer.com/KB/US... | |
| USB cable hype Axle, cable bad enough to corrupt bits would be disaster since each frame contains checksum and would be dropped. As I understand it each frame is delivered every millisecond and starts with unique bit sequence signifying start of the frame (SOF) ... | |
| Buying equipment Swarthy, I had the same dilemma - Hyperion Sound closest dealer to Chicago was in Pennsylvania. I decided to buy demo speakers anyway based on fantastic reviews and they proved to be great sounding. What I failed to understand was that company wit... | |
| External Drive Help I have good luck with 1TB Fantom drives. For about 10 years i use one at work for backup and one at home. I use it for the music, pictures etc. In addition I have two backups (total of 4 Fantoms). I keep one at home and one at work just in case of... | |
| USB cable hype Axle, asynchronous DAC controls the timing. Data coming from the computer is placed in the buffer. Every frame computer adjusts number of samples in the frame based on buffer under/overflow signal from the DAC. DAC takes data from the buffer and w... | |
| Jeff Rowland Bombaywalla, You are right - not many amps quadruples or even doubles power exactly. I don't even care for the one that does, since in order for this to happen amp has to have hefty power supply but also lots of negative feedback.On the other hand... | |
| USB cable hype There are two possibilities: You have synchronous USB DAC: Timing is controlled by the computer and is so jittery that your cable cannot possibly make any difference.You have asynchronous USB DAC: Timing is controlled by the DAC. Cable or computer... | |
| Jeff Rowland Ricred1, I found them very eager to help. Perhaps it was just the particular support person. Fortunately we have this forum to learn and share | |
| Jeff Rowland Ricred1, I stated 22% loudness increase, but it would be true for 2x loudness. I forgot that bridging doubles the output voltage, thus quadruples the power. In such case you can count on (substantial) 49% loudness increase. Speaker's minimum imped... | |
| Jeff Rowland Al is right (as usual). This amp most likely uses PASCAL S-PRO2 class D modules. Data sheet shows minimum load of 2 ohms or 4 ohms when bridged. Bridging might create problems with your speakers gaining only about 20% of loudness. Not worth trying... | |
| SACD & other Formats I've read interview with Roger Sanders. He believes that red book CD format is perfect and vinyl is inherently flawed. He quotes Nyquist etc. He forgets that Nyquist theorem applies only to continuous waves and fails short with short samples espec... | |
| Class D at low volume Tim, GNFB serves the same role in class D as it does in class AB - reduces distortions, widens bandwidth, reduces output impedance. It is not necessary for operation in general but particular circuit can be designed to depend on it.Since even shal... |