Correctly choosing type and quality of PCB components
Hey
So while building crossover components and analog equalizers(like, liknwitz transform), what is the preferred type of components? Any off the shelf resistors/caps or high quality high tolerance(1% or 2%) components.
Basically, most of the caps in the point micro-farad range, they are readily available in ceramic type. But will an electrolytic cap, with maybe volt above 20V, be useful? Or polyester types? And what about resistors?
Also, the board preferred. I have a through-hole component board.
Thanks.
Hey
So while building crossover components and analog equalizers(like, liknwitz transform), what is the preferred type of components? Any off the shelf resistors/caps or high quality high tolerance(1% or 2%) components.
Basically, most of the caps in the point micro-farad range, they are readily available in ceramic type. But will an electrolytic cap, with maybe volt above 20V, be useful? Or polyester types? And what about resistors?
Also, the board preferred. I have a through-hole component board.
Thanks.
Last edited:
You can't go wrong with the Vishay/Dale RN60 or 65 resistors, excellent quality, inexpensive and widely available.
Many people prefer polypropylene capacitors for this purpose.
It is always good to use the best when you can, but having limitations that could be just silly for others but serious for some, like availability, go for metal film resistors.
Gajanan Phadte
Gajanan Phadte
Electrolytics are useful for power supply filtering and bypassing. You can also get away with using them for DC blocking.
For capacitors that are part of the EQ network, polypropylene film is best, but polyester is also acceptable (maybe not for hardcore audiophiles 🙂 ) Ceramic should be avoided unless you can prove it is the NP0/C0G type. This is a high quality dielectric, but other types of ceramic capacitors are nonlinear and should only be used for power supply bypassing, not in the audio signal path.
(Spare me the audiophile protests that the power supply is part of the signal path.)
For capacitors that are part of the EQ network, polypropylene film is best, but polyester is also acceptable (maybe not for hardcore audiophiles 🙂 ) Ceramic should be avoided unless you can prove it is the NP0/C0G type. This is a high quality dielectric, but other types of ceramic capacitors are nonlinear and should only be used for power supply bypassing, not in the audio signal path.
(Spare me the audiophile protests that the power supply is part of the signal path.)
It certainly doesn't hurt to have close tolerance parts, but another option is paying a little extra to have parts matched. Some vendors do this for you. The main reason you would want to match is to have close tolerance for left and right channels, which should help with imaging, as opposed to being spot on for your calculated values for your transfer function 🙂
Tony.
Tony.
- Status
- Not open for further replies.