8" woofer vented box size for music (muddy boomy bass problem)
I upgraded woofer on my small active 8" Jamo210 with the good reputation Dayton DCS205-4. I also turned the box front firing.
With the Dayton mounted and amp adjustments done, I found the original port tune is way off too high causing muddy one note bass. I have now played a week with various length toilet roll cartridges stabbed in the vent port. Additional 6cm (~2.5") port length is sweet spot with this setup. I estimate the tuning freq now is ¨~35Hz or below.
Some tracks are very good. Tight, powerful, accurate bass. Although too many tracks still catch a boomy and overemphasized freq somewhere 45-60Hz area. Longer vent tube mutes all bass too much.
The original box is 21 liters gross volume. 19.5 liters might be net.
I learned a bigger vented box might deliver more linear freq curve and be easier to tune. I want it vented, since i don't have an amp enough to drive closed box.
The goal is good, tight, linear musical (jazz, funk, edm, pop) bass, easy (at least easier) to tune. Home theater is not priority but bass extension would not hurt.
I purchased 19mm MDF sheets already for new box but still can't decide box size/dimensions. I am thinking of 27 liter net volume. Is it too much? What size/dimensions do you suggest?
ps. is it possible, is it common, that OEM subwoofer plate amp is not linear but has baked in boost at some freq, say, her at ~50Hz?
Posted Apr 15, 2025, 7:26 PM UTC