Congrats on your speaker diy and to your passion!
I suggest you try to tame the mids & highs by using L pads and/or crossover adjustments.
For the lows, wait mo muna mag fully break- in yung mechanical suspension nya, that is, the edge surround and the damper spider (the one holding the voice coil) before you do your next tweak plan (adding port). Break in period will depend on your usage. Pede rin accelerated burn-in, feed continous low signal via signal gen (kung avlbl) to loosen the suspensions or just use other signal sources: Tuner,cdp (in repeat mode, choice of title...)
Some prefer the bass of closed box because of its tightness due to hump characteristics in its resonant frequency. However, it does not roll off well in the low freq region as compared with the ported box design.
Personally, i prefer the close box design if properly tuned for its bass tightness.
It will take a lot of patience/adjustments tuning by ear ( in your case) until you are satisfied (or not
![Cheesy :D](https://www.pinoydvd.com/Smileys/default/cheesy.gif)
)...
As they say in other Audio forums, this thread is worthless without any pictures.
![Grin ;D](https://www.pinoydvd.com/Smileys/default/grin.gif)
Pls post your diy speaker.
![Wink ;)](https://www.pinoydvd.com/Smileys/default/wink.gif)