skrivis

Responses from skrivis

First Order Crossovers: Pros and Cons
I gave the source as an explanation of vector addition. Then since the thread is about 1st-order crossovers, I included a quote that shows the superiority of 1st-order crossovers. There can be no argument with that. "It yields a piece of wire."You... 
Phase Coherence or Time Alignment: Which More Imp?
Suits_me> Is there a vintage site with a picture of the C/3L?There is a picture at: http://groups.yahoo.com/group/IM_Fried/?yguid=180415640They appear to be of early-middle vintage, judging by the drivers. My C/3-Ls resembled these at one point... 
Phase Coherence or Time Alignment: Which More Imp?
I regret that I never got subwoofers to match my C/3-Ls. I am planning to buy a pair of Monitor 5s, which likely don't image as well, but have better bass and maybe even better midrange due to less reflections back through the cone.The Monitor 7s ... 
Phase Coherence or Time Alignment: Which More Imp?
Suits me:You don't need a stepped baffle to get time-alignment. A sloped front baffle actually works better.Bud did recommend that most of his bookshelf speakers be listened to from a certain axis.This brings me to my next point, and it involves a... 
Phase Coherence or Time Alignment: Which More Imp?
Yes, I surely do like my C/3-Ls, and they've served me well for 15 years or so. I'm in the process of getting them upgraded to C/6 status. 
Phase Coherence or Time Alignment: Which More Imp?
Trelja,I'm very surprised to hear that Bud didn't know about Zeta in re: series crossovers. He certainly had known about 1st-order series and quasi-second order series crossovers since at least as early as the Betas. 
First Order Crossovers: Pros and Cons
Just to add to the info on vector diagrams, there's a very good explanation of what's going on at the Rane site, particularly in http://www.rane.com/note119.htmlThe most telling part of that is "The 1st-order case is ideal when summed. It yields a... 
Phase Coherence or Time Alignment: Which More Imp?
I own a pair of C/3-Ls, and have seen crossover schematics for other models, and they use a simple 1st-order series network. Period. There's no way to get a higher-order electrical network out of what's there. The published articles I've seen from... 
First Order Crossovers: Pros and Cons
Step function tests seem to show all of this very well. Stereophile performs these tests on speakers, but they fall down in not drawing any conclusions from the results."This speaker simply can't pass a transient correctly, therefore it's crap, no... 
Phase Coherence or Time Alignment: Which More Imp?
That should have been "X number of listeners _think_ it sounds swell." 
Phase Coherence or Time Alignment: Which More Imp?
The "X number of listeners thing it sounds swell" argument doesn't impress me because it also applies to Bose speakers..."Professional" listeners? Like recording studio engineers or musicians?I'm not sure I'd rate most studio engineers as a good r... 
Phase Coherence or Time Alignment: Which More Imp?
"I have noticed the positive recommendations you are receiving here and other places on your speakers. With the apparent unfortunate situation with Meadowlark, it looks like you, Richard V. and Thiel must carry the load. "There are others. Karl Sc... 
First Order Crossovers: Pros and Cons
Placing the speakers well out in the room should reduce early reflections. (More distance from a reflective surface equals more delay and more attenuation.) That fits in with the idea of wanting to separate the reflection (echo) from the original ... 
First Order Crossovers: Pros and Cons
The lobing is actually due to having 2 spaced sources of the same signal at the same frequency. It isn't really caused by the crossover, but by the drivers. (Just being pedantic here.)I don't see directivity patterns (lobing) as a huge problem - p... 
Phase Coherence or Time Alignment: Which More Imp?
"Phase coherence" and "time alignment" are related concepts.I think what you're thinking of as time alignment is aligning the acoustic centers of the drivers with either a stepped or slanted baffle. This "phase aligns" them, so to speak. (Differen...