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Jeffdachef last won the day on September 18

Jeffdachef had the most liked content!

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4,805 Excellent


About Jeffdachef

  • Rank
    Gunz That Turn on Nunz
  • Birthday 06/03/1990


  • Name
  • Location
    South Coast Metro, CA
  • Occupation
    Small Business Owner
  • Interests
    Electronics, mainly computer and audio components.
  • Audio System Setup
    Enough to do a hair trick on higher tuning.

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  1. Jeffdachef

    Help tuning my 125.4 Wolfram amp

    throw away the DMM when it comes to mids and highs. Keep everything Full pass and do all the crossover stuff on the head unit. Especially if going active. Amp crossovers are pretty garbage.
  2. Jeffdachef

    Pioneer GM-D8604 Amp Dyno

    So on a Side note, I just swapped out my CT 500.2 today which is supposed to be 800 x 2 at 2 ohms. I put in the pioneer GM 8604 running at 2 ohms bridged aka 1 ohms each channel. First off, its a lot noisier than the CT, which had very slight noise. I'll do something to fix this... Now for Performance, it gets just as loud and slightly less SQ in a direct swap, After tuning which required a 1db 2khz and 3.15khz bump (they were negatives before.) in the EQ, they sound pretty much the same as the CT. Here's the real reason why I swapped. At 1 ohm operation its runs ice cold and is 1/4 the size of the CT 500.2.and drops less voltage. Overall super happy with the swap.
  3. Jeffdachef

    its cheap, but is it that bad?

    I dont care what a company claims, just from knowing how box designs and tuning work, you can already see that that box is rather decent sized for the amount of port are a used. Definitely not mid 40s tuning at all. Might help to use your brain and actually learn how to design and build boxes for once. Or at least figure out a way how to make enough income so you are capable of even doing so.... I really hope after all this time you still aren't p*ss poor gramps.
  4. Jeffdachef

    its cheap, but is it that bad?

    Here's the difference between you and me. You read sh*t online and believe anything. I already know how to design sub boxes and can pretty much eyeball the tuning based on port length and area. Even from the comments most of them say its around 37-38hz. Better luck next time pops.
  5. Jeffdachef

    its cheap, but is it that bad?

    dynos tell a different story. You wont get anything better making those lateral transitions. That box has low port area so its more like 35-38hz definitely not 45hz.
  6. Jeffdachef

    Which of these speakers are better?

    wooden 1/4 or 1/2 adapter with weather strip foam or silicone caulk anywhere there's open holes. throw away the grills. you dont need them.
  7. turn down the gain. if its not loud enough for you then too bad, thats what you are stuck with. If its overheating then its incorrect gain settings. You shoulda gotten a cheap cca kit instead and sold that amp to buy a proper subwoofer amp with the money saved.
  8. Jeffdachef

    Which of these speakers are better?

    mtx looks better than the kicker in every way other than bass response. Kicker has a much cheaply built tweeter.
  9. Jeffdachef

    do i need good speakers for a sub?

    I'd get an amp for the stock speakers and keep the 12s. Stock speakers on actual power sound like a completely different monster.
  10. Jeffdachef

    do i need good speakers for a sub?

    Keep the stock speakers, they'd probably sound infinitely better than cheap aftermarkets on head unit power.
  11. Jeffdachef

    6.5 midrange recs

    its the same concept. Just dsp has more options. You do the exact thing with any active capable head unit.
  12. Jeffdachef

    its cheap, but is it that bad?

    better than the janky craigslist deals.
  13. Jeffdachef

    6.5 midrange recs

    fu(k going passive that sh*t is beyond garbage. full tutorial on tuning here, no excuse to not go active.
  14. Jeffdachef

    drop HZ on a box?

    make a baffle with an 8 inch sonotube and put it over the 10.
  15. Jeffdachef

    8k rms sub

    thats why I recommended a brazilian 15k for each sub. After box rise you'll see 7.5k to 8k ish after rise.