tomthiel
Responses from tomthiel
| Thiel Owners Prof - the 02s were made from standard-grade stuff, miniature, standard electrolytic caps,5w carbon comp resistors and normal coil wire. The system will often work with bad parts. At nearly 40 years old, the caps are almost certainly shot, unless ... | |
| Thiel Owners Andy - regarding diffraction - please pardon me not knowing its controversy, I've been out of the loop too long. It is not controversial nor trivial, it is a fundamental element of design; it is measurable and directly hearable if the system is tr... | |
| Thiel Owners Prof and you other 02 fans - I just now got my old 02s on line - received from my brother from their life-long use in our parents' system. Drivers are good, coils are good - within their genre. These speakers were made in 1978 before we discovered... | |
| Thiel Owners Prof - Cabinet stiffness including the baffle helps it disappear. I am experimenting with "stiffening" the MDF cabinets, especially the driver mounting recesses with Minwax Wood Hardener. Also that 3.7 cap is far quieter than the 2.7 top. I am ext... | |
| Thiel Owners Unsound - everything matters, and there may be some effects from the forward parts. The cross struts are 1/4" diameter round bar, and not in the path of any drivers. The forward side verticals are 1/2x1/2" MDF, but so far off axis that they presen... | |
| Thiel Owners Andy - the baffle is critically important for how the waveforms propagate into the room. Going back in history, common wisdom dictated the drivers be offset by differing amounts from all baffle edges so as to spread the diffractive effects out, ov... | |
| Thiel Owners sdl4 - an outsider you might consider is Morrow. I ended up outfitting my studio with Morrow ICs and speaker runs. My comparisons weren't terribly extensive, but I did read widely and compare against some old Kimber, Straightwire, OCOS, Mogami, MI... | |
| Thiel Owners Guys - we have learned enough to repeat the successful upgrade that Beetle performed. But we have not yet approached the comparative analysis to find cost-effective performance points. Beetle-level parts cost would exceed $1K, and parts cost is no... | |
| Thiel Owners Ron - your 3.7s are State of Thiel Art and I have plenty to learn before claiming to improve them. But, I already am generating ideas. | |
| Thiel Owners Rules - my concern is to thoroughly investigate the parameters and then compensate as necessary. I will develop the Thiele-Small parameters of the old and new drivers to judge how the changes interact with the crossover. Furthermore, since first-o... | |
| Thiel Owners I am modeling the old drivers for comparison and compensation in the replacement drivers for their Renaissance-life. bluetone - the 3.5 drivers and crossovers would be helpful for my modeling efforts. I would offer them for further use once I am ... | |
| Thiel Owners Dino - I suggest that you contact Rob. Note that if he neglected your prior request, it was not intentional. Rob has the best chance of supplying relevant information for your decision. Regarding option 3 above: My present work is all preliminary,... | |
| Thiel Owners I would be interested to know if anyone here has evaluated the filter. My opinion is extrapolated from what I see and what he told me - I haven't heard it. Anyone? | |
| Thiel Owners About a year ago when I was re-exposing myself to the State of Thiel, I called the guy offering this filter. I judged that he is seeking to smooth out the measured upper midrange squiggles without understanding the nature of those squiggles as low... | |
| Thiel Owners Ron - It's good to be here. This project wouldn't be happening without you guys. The 3.7 is perhaps at the end of the timeline, since it is a very well optimized design and not in danger of cap failure. Especially, the cabinet is pretty quiet, bu... |