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Discussion in 'Archived Threads 2001-2004' started by Curtis_Edwards, Feb 13, 2002.
Which should you use and why? Are they both going to be the same output?
It's better to use the fancy calibration disk, because this will take into account the whole system, from the laser reading the DVD to your seating position, rather than just from the reciever on. That said, the difference will be quite minor for most systems.
Do a search for "Video Essentials" (VE) or "Avia"
Build in Test Tones: These are quite good and have the advantage of not needing the external disk. But some units, Yamaha in particular, dont provide test-tones for the subwoofer port.
Avia & Video Essential: These are great. They not only provide subwoofer tones, they also honor the LARGE/SMALL settings of your speakers and give you a rough idea of the full-signal path effect. They also describe the entire process in a simple to follow format.
They also have some extensive video adjustment screens, and a lot of description of how to use them. It's almost a course on TV adjustments.
Frequency Sweeps: This type of CD gives you several seconds of 10 hz, then 20 hz, .... all the way up. With a SPL meter you can plot how your room is affecting/enhancing some sounds. Only usefull if you plan to do some equalization to tame peaks.
I already have the Avia, but I want to do a subwoofer frequency sweep. Where can I get one on these CDs?
Check out Stryke audio.
Tim: If you have a CD burner, you can download a little program called "NCHTone" (I think). This little program lets you set a frequency (in 1 hz increments) and a time, and save each tone to a .WAV file. Then you use your burner to make each one a track and you now have your own test-tone CD.
Using this, and a SPL meter, you now have a "poor-mans" Real Time Analyzer.