tomthiel
Responses from tomthiel
| Thiel Owners Andy - regarding your last paragraph on the 3.7 charts. Those charts would indeed FAIL my definitions of both "time coincidence" and "phase coherence". BUT I don't buy the charts. Note they are taken at 50" and on the tweeter axis, both of which m... | |
| Thiel Owners Unsound - right on. Dunlavy took them to task and Vandersteen chided in an interview. Thiel chose to not respond as a policy, but discussed it with John. The biggest problem with them is their (usually) 50" mic distance, which does not allow the ... | |
| Thiel Owners George - I always wonder whether my comments are clarifying or just muddy the waters darker. My survey of the web suggests that there are strongly held but contrary opinions on the subject. I, as you might guess, have paid attention from various a... | |
| Thiel Owners I also find the topic of phase fascinating, including the auditory neurology and learning that helps us hear, as I have expounded on this thread. There are some confusing terms. Time alignment is a great term, but was trademarked by Ed Long around... | |
| Thiel Owners Andy - I'm interested in learning of your work and look forward to reading more on your thread. As an observation of your opening statement, I read what seems like a false-start. I have followed John Atkinson's reviews, observations and attitudes ... | |
| Thiel Owners YY - I suggest you find an alternate reality where you can turn your room on its side. That 21' x 25' room with a 12' ceiling would be fantastic! | |
| Thiel Owners Jazzman7 - Thanks for the lead to the CS1.5s at TRM. They're on their way here as my intended proof of concept workhorses. I'll apply what I've learned to these 1.5s due to their relatively simplicity, low risk and firm foundation. Are there any 1... | |
| Thiel Owners Thanks Beetle. I'll point out an error in that old post, when I was dusting off my remembering stick. The sequence of the CS1 series (6.5"2-way) goes O4, O4a, CS1, CS1.2, CS1.5 (5th generation), CS1.6, CS1.7. The model 1 represents the most change... | |
| Thiel Owners Jacksky - I posted a long version answer perhaps a year ago on this thread. 3 is the model 3 and .5 is the 5th generation. The CS5 is a 5-way, and has no passive radiators. The bass is sealed and all 3 woofers extend below 10Hz. | |
| Thiel Owners Jacksky - a long answer may be of interest to some on this thread. I just lost a few paragraphs and will find some time soon. Hint: the 1.6 is the sixth generation of the model 1 (with pre-history of O4 and O4a).Tom | |
| Thiel Owners Unsound - thank you for those links. I remember the Angelus; Bau was putting the tweeter into the (relative) infinite baffle domain (like Jim's desire for the CS5 to have a wide, curved baffle). And his woofer wanted a wider propagation environmen... | |
| Thiel Owners The elements of a speaker all work together as a whole - a pot of soup. Trying to separate any single element leads to confusion. | |
| Thiel Owners Prof - the 2.7 baffle is 3" thick and well-braced. I doubt that it is moving much. The baffle treatment I am developing is a 3-layer felt and fabric overlay to make the baffle surface virtually disappear. This territory is new to me, and I am maki... | |
| Thiel Owners JA - circling back to 1.6 and 1.7 sales: Rob says approximately 2500 pairs of 1.6 and 1000 pair of 1.7 were sold. The preponderance of evidence suggests the 1.7 has 4th order Butterworth XO slopes for time coincidence, but not phase coherence. | |
| Thiel Owners Prof - there is some low-hanging fruit for the 2.7 upgrade. A 400uF electrolytic midrange series feed cap (although well bypassed) is certainly limiting the clarity-directness. Other XO tweaks too. The 2.7 baffle is nicely optimized, but I bet we'... |