kr4
Responses from kr4
| DIY turntable plinth material Corian is not resonance-free. Using the standard 1/2" thickness, it was necessary to add a layer of heavy damping to the underside to stop the ringing (which is higher in frequency than one might expect). A layer of Dynamat was the cure. | |
| XTC Room Analyzer I have reported on the use of XTZ filter curves with the Classe and Rotel processors.Kal | |
| Anyone know what these funky vintage speaker are? Roger that. ;-)Kal | |
| Anyone know what these funky vintage speaker are? Several companies in the 60s made speakers in such a configuration including Hegeman, Brociner(?) and Eico in the US. Basically, there was a relatively standard upward-aimed mid- or full-range cone driver with an appended and elaborate flower-like... | |
| XTC Room Analyzer Congratulations. Buy yourself a present. | |
| XTC Room Analyzer 1. You should look at the XTZ site (and/or my review in Stereophile) to see the differences between the models.2. Yes, if you are going to do any FR measuring with a microphone, it should be calibrated. I believe you can have it done for less than... | |
| XTC Room Analyzer XTZ. It uses sweep tones, can handle multiple measurement sites, has the math automated, generates time-decay as well as FR and can synthesize corrective filters. Nothing that a sophisticated Matlab user cannot do, of course, but faster and easier... | |
| Hearing Tests I apologize for saying that the audiocheck site had limited FR. I didn't see that the extended ranges were on other pages.Still, knowing the frequency and level when being a subject is a bias. Better to have someone else administer the test to you. | |
| Hearing Tests The audiocheck site has limited FR and, in that way, does seem closer to what an audiologist actually does.Expectation bias can be eliminated and I did that by copying and randomizing the tracks from the Audio-CD disc. So far, that is the best ava... | |
| Hearing Tests The test that Nonoise lists from http://www.phys.unsw.edu.au/jw/hearing.html is flawed in a number of ways, particularly since it calls on the subjects ability to assess similar loudness levels at different frequencies. It also fails to minimize e... | |
| Hearing Tests Nonoise, I was asking what program you were using and how you got your dB numbers. | |
| Hearing Tests OK but the standard way to list thresholds is to assign 0dB to the 1kHz level and express the others in relationship to that.Can you tell me where you are getting "1Khz@-86db?" | |
| Hearing Tests What is the reference for your dB measurements and under what conditions? Usually, it is referred to a standard at 1kHz. If you show -86dB at 1kHz, then your sensitivity at 8kHz is down 17dB and you are down 62dB at 12kHz. In fact, from those numb... | |
| Hearing Tests Actually, using speakers is not a generally good method unless you are working in an anechoic chamber. The best one can do domestically is to use sealed headphones and, even then, one needs a very quiet environment. I have used sealed, calibrated ... | |
| Optical input double adaptor? I am not certain that a "splitter" will work in this combining application and would feel more secure with a switch. |