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Antoni Čović

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About Antoni Čović

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  • Birthday 11/11/1995

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  1. Hello, Is cracking amps of battery measure of good battery? Let say we have two batteries, one is 3 years old and second one 1 year old and they are both rated at 760 cracking amps If we test both batteries and 3 years old battery have 740 cracking amps and 2 year old battery have 680 cracking amps . Does that mean that older battery is in better shape? and are there more factors too know if battery is still in good shape? (I can get 760 amps rated battery thats tested and give out 700 amps and don't know how old it is but for really good money)
  2. I put biggest alternator it could fit.. probably one of few puntos mk1 in europe with bmw 180a alternator thats why batteries are my only option.. and with 350ah batteries I think i will be safe to not drop under 12v..
  3. Amplifier is DB4000.1D with 180A alternator and 250ah batteries.. Voltage drops to 12.4-12.5v. When I clamped I tried few songs and then saw wattage.. tried both low and high bass songs. Edit: Thinking about getting one more 100ah battery and 2x 15" 1.5kw rms subwoofers wired to 0.35ohm. I talked with alphard importer for my country and he said that its okay to wire that amp on 0.35ohm if voltage don't drop under 12v.. but idk..
  4. It's alphard db315. Well I have 4k right now.. But I think I need something bigger.. it's wired to 0.7ohm and I clamped 1800rms out of it.
  5. How big amplifier to get to beat impedence rise for 2.5kw subwoofer?
  6. 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
  7. 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.
  8. 80% Job done.. Gone with 33hz, 4.5cuft design.. threaded rod and black mat paint more to go
  9. 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..
  10. 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?
  11. Which program do you using? My car resonance frequency is 56hz if that helps.. and what about 34hz tuning with 4.5 net?
  12. 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?
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