I loved this sub-woofer, but the second time it broke I wasn't able to get it back for repair due to lock-down. Having been lurking on the site, and looking at the information on here about the low cost class-D amps, I decided a nice project would be a retrofit of a TPA3118 1x60W from ebay, and a Mean Well LRS-100-24.
The standard design had a 48v PSU which is safely to one side as it may well be useful for a future project, and the Mean Well PSU fitted into the space vacated by the original PSU. And the amp wired simply, as it only has power, line in, and speaker out,I have temporarily secured it in place with foam and cable ties as I wanted to see how it sounds.
I'm using the Sub output from my NAD 3020D, which according to the white paper says its passed through a digital low-pass filter, and running the sub on its own it sounds like it is filtered.
But, my speakers have a bit of bass response, and I used to have my cross over set at ~150Hz, currently I'm guessing its a little higher as the lower end of speech really booms.
So - which direction would anyone recommend with a low-pass filter? Is it a case of some Op-amps in a traditional active xO, or are there any funky new chip solutions that do it all in one go?
The standard design had a 48v PSU which is safely to one side as it may well be useful for a future project, and the Mean Well PSU fitted into the space vacated by the original PSU. And the amp wired simply, as it only has power, line in, and speaker out,I have temporarily secured it in place with foam and cable ties as I wanted to see how it sounds.
I'm using the Sub output from my NAD 3020D, which according to the white paper says its passed through a digital low-pass filter, and running the sub on its own it sounds like it is filtered.
But, my speakers have a bit of bass response, and I used to have my cross over set at ~150Hz, currently I'm guessing its a little higher as the lower end of speech really booms.
So - which direction would anyone recommend with a low-pass filter? Is it a case of some Op-amps in a traditional active xO, or are there any funky new chip solutions that do it all in one go?
