karls
Responses from karls
| Time coherence - how important and what speakers? I'll take a stab at Joseph Audio's post: First of all, no one ever claimed that time and phase coherence is the only important parameter in loudspeaker design (at least, no one with any sense). There are many, many factors, all of which are extrem... | |
| Time coherence - how important and what speakers? Twl, only first order filters are phase coherent, no exceptions. First order usually refers to the electrical filter, not the inherent slope of the driver's response. Therefore a first order filter consists of one reactive element, either an induc... | |
| Time coherence - how important and what speakers? Any single-driver speaker, whether cone, walsh, electrostatic, or whatever, is automatically time and phase aligned. That's one of their biggest advantages. | |
| Sand or Lead shot A few comments: Sand doesn't collect moisture if it starts out dry and is in a sealed enclosure. Lead is not a health hazard unless ingested. IMO, though, sand is just fine for most damping applications. The only benefit of lead or steel is increa... | |
| Why low sensitivity speakers? First consider radiating area. Typical loudspeakers are only about 1% efficient in an overall sense (that is, for 100 watts of electrical input power, you get an output of 1 watt of acoustical power). The reason for this is that there is a bad imp... | |
| Time coherence - how important and what speakers? Far fewer speakers are really time-aligned than you might think. For example, the Wilson Sophia has a slanted baffle, but one look at the Stereophile review's impulse response tells you that it is not even close to being aligned in either time or ... | |
| Speaker priority: high or low??? I too am going to weigh in on the speaker end, with the provisos that (1) you do have to reach a certain level of amplifier and source performance, which varies from one individual to the next depending on what you can tolerate, and (2) really dis... | |
| Loudspeakers that match well w/Bryston B-60? Look into the Meadowlarks. Whatever you pick, try to keep the impedance and sensitivity relatively high. | |
| Why low sensitivity speakers? You can pick any two of these three options:1. good bass2. small cabinet3. high sensitivityThis is an immutable law of physics. Since many people want the first two due to decorating and other domestic considerations, the third is the one that get... | |
| Opinions on this "white paper" Twl has it exactly right, although maybe the way he said it confused some people. The lack of a scientific measurement which correlates exactly with some particular "thing" that you can hear, does not mean that the "thing" does not exist. All it m... | |
| Tubes Do It -- Transistors Don't. I've been very curious about the Berning but never tried it. Do you have any experience with driving lower-impedance speakers with it? My speakers are a ruler-flat 3.5 Ohms with near-zero phase throughout the entire audio band, except for a single... | |
| Tubes Do It -- Transistors Don't. I have to weigh in on the SS side when it comes to amps, not because they are all better, but because a few of them are. While I've heard very good tube amps and can appreciate their abilities, I've never heard one that could do bass so that it so... | |
| What kind of amp? Look into the new Ayre AX-7 integrated, an excellent choice that is starting to show up on the used market. | |
| Do I need a subwoofer for my audio physic sparks? Does the Rogue have a preamp output/input? Some integrateds have this, where you can run the signal through an outboard processor (in this case, you would run it through the sub's crossover), and then back into the integrated's amplifier stage. If... | |
| What type of solder do you use and why? Cardas uses a quad-eutectic formulation which has lead, tin, copper, and silver. The point to this is that you would like the solder to contain at least a small amount of whatever metal you are soldering to, so that on a molecular level you get a ... |