Then they are what they are, no help. At least the drivers are correct now. It's strange to me, for example I have a Microlab FC330 on my desk next to the PC. There is only one 5" bass driver, a small BR box, no DSP or anything like that, but it has plenty of bass.
close the two short reflexes. you don't need three of them working on one volume.
reflex gets too high tuned with all of them
reflex gets too high tuned with all of them
I opened them a long time ago, changed the cables, added a backfire super tweeter and damping. I don't have a schematic, but I didn't notice anything similar on the PCB. Maybe it has some analog bass boost, I can't say for sure. However, I think it would be disastrous for that little driver to make it run below 50-60Hz.
https://www.ixbt.com/multimedia/microlab-fc330.shtml
What I liked most about them was the fake tweeter, a wonderful idea. 😁
https://www.diyaudio.rs/topic/8911-microlab-fc330-sal-dt20/
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Here are the schematics, it doesn't have any DSP. 2 opamps, 2 transistors, 4 pcs. of TDA2030A. Plain and simple.
Attachments
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Can't argue with that.
I used the 2.1 amp in a defunct Wharfedale cube (8" driver). It has some serious oomph for 28w RMS.