ElectricPotato
- Feb 17, 2017
- 3
- Joined
- Feb 17, 2017
- Messages
- 3
Hello, I just started learning about electronics so don't be too harsh on me if my question is stupid.
I wanna drive a subwoofer and since I'm a beginner I decided to use an pre-made amplifying board. That works wonderfully and at a decent volume but I figured out it would sound a lot better if I used a lowpass filter to cut off anything above 150Hz from the input signal first. I researched how to build a passive one and it turns out it's quite easy.
The filter itself works but it reduces my volume tremendously to the point I can barely hear it at max volume. I tried different combinations of resistors/capacitors that would get me the same cutoff frequency but it was still really quiet.
My attempts were 1kOhm resistor & 1uF capacitor, then I tried 1Ohm & 1000uF and some other values that have a cutoff frequency of roughly 150Hz.
Did I do something wrong and is there anything I can do to increase the volume while filtering?
I wanna drive a subwoofer and since I'm a beginner I decided to use an pre-made amplifying board. That works wonderfully and at a decent volume but I figured out it would sound a lot better if I used a lowpass filter to cut off anything above 150Hz from the input signal first. I researched how to build a passive one and it turns out it's quite easy.
The filter itself works but it reduces my volume tremendously to the point I can barely hear it at max volume. I tried different combinations of resistors/capacitors that would get me the same cutoff frequency but it was still really quiet.
My attempts were 1kOhm resistor & 1uF capacitor, then I tried 1Ohm & 1000uF and some other values that have a cutoff frequency of roughly 150Hz.
Did I do something wrong and is there anything I can do to increase the volume while filtering?