After building several gyrator circuits lately, it's apparent some op-amp ICs fail miserably when used therein. After trying 4 different IC packages, only 1 performed perfectly. Some had noise near the zero cross-over, some would not reach the full range of gain -and some failed miserably. The gyrator parameters were not unreasonable. Wanted to pass this on so to head-off unnecessary troubleshooting.
@@ahnenpost5237 A genuine TI NE5532P worked the best. Other variations and counterfeit parts failed miserably. Also, if you use a cut/boost gain circuit, the two matching input resistors must be below 1k Ohm (I used 220 Ohm with great results); otherwise, it will break-down with oscillation when the gain is increased.
Wanna use it as a speaker crossover? Only in a pre-amp to power amp situation. But then you need more power amps. and you get into Bi-Amps based on crossover frequency.
Yes, bi-amping (or tri-amping) is extremely useful in PA situations. I think it's a bit pricey for the average home listener, but a separate powered subwoofer can be a useful addition. Unfortunately, it has been my experience that the average user doesn't have a clue as to where to set the crossover frequency in a standard bi-amped PA system (and things are not much better for the sub, and even worse for a tri-amped PA). Hmm, maybe I sound do a video on that for the Science of Sound playlist...
Found you today and like your videos! Nice bruh up for me :) And also some new stuff which is great to learn. Just wondering, what is the software you are using? Anyway thanks for taking the time to make your videos! 👍
