Antoni Čović

So then clamped watts?

Hey, great calculator! but I just have one question: for "total input power" do I put my system clamped watts or Subwoofer spec watts? Thanks

Update: Tried it in car and not happy.. lost a lot of upper frequencies and it sounds unbalanced.. a lot power on lower notes and just few notes up power dissapears.. seems too big box for this sub.

Box almost done

80% Job done.. Gone with 33hz, 4.5cuft design.. threaded rod and black mat paint more to go

I think it will be okay, it's right inbetween 31hz and 35hz.. on 31hz tune I definitly missed some higher notes. And mostly all music I listen to doesn't touch anything below 30hz..

Look at this, I think It's perfect. 4.6cuft Net, 33.40hz tuning (Calculator is 1hz off) and 61sq port area What do you think?

Which program do you using? My car resonance frequency is 56hz if that helps.. and what about 34hz tuning with 4.5 net?

Ohh... I had 31hz 3.5cuft box and it was slaming lows but there was no highs, then I cut the port and made it 35hz 4.0cuft and now it's too "peaky" for me and I lost some of good low range but subwoofer started to move less but giving more output.. So I was thinking why not to make box bigger and tune it higher so I still get some high frequency and dont lose lows.. What do you think is 4.5cuft net enough with 34-35hz tuning?

Which box is best of them all? Subwoofer is Alphard DB315 (2.5kw) and I have 1600 clamped watts so I'm guessing bigger the box the better

Hello, what is biggest box size for alphard db315? Tuning around 30-32hz, 4kw rms deafbonce 4000.1d amp and not so good electrical ( 75a + 2x 70ah agm)

Hello, are Winston batteries any good? and how good is this version https://www.ev-power.eu/LiFeYPO4-batteries-12V-1-1/Lithium-Battery-12V-40Ah-WB-LP12V40AH.html This 40ah winston = how many ah agms? Thanks

Croatia.. I have 75a alternator and biggest one I can put is 105a.. not really worth it eh? Big 3 done... all wires are 0 gauge.

First or second option for best perfomance? Right now I have 2x 55AH wet batteries and on 3kw amp on full tilt I get to 11.9-12.1v on amp.. Will any of this options help or it's wasted money? Thanks