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New System in the Grand Marquis (Build Thread)

Discussion in 'General Car Audio Discussions' started by eazy, Dec 3, 2007.

Page 19 of 25
  1. eazy

    eazy Full Member

    Anybody going to Daytona in a couple weeks?
     
    eazy, Mar 15, 2008
    #361
  2. pedro quiroga

    pedro quiroga Well-Known Member

    i want too,but i cant get out of work.
     
    pedro quiroga, Mar 15, 2008
    #362
  3. eazy

    eazy Full Member

    Yeah I'm going to go to my work Monday and request that Saturday off. Anybody going? I need someone that actually knows audio to listen to my **** and tell me if it's up to par lol.
     
    eazy, Mar 15, 2008
    #363
  4. eazy

    eazy Full Member

    eazy, Mar 16, 2008
    #364
  5. pedro quiroga

    pedro quiroga Well-Known Member

    if your talking spl look for some of the guys from team db unit.they are spl guys and know how to boom.lol.

    they will have their team db unit shirts on,hard to miss them.

    get some pics and vids.please.

    tell em pedro modean from floridaspl sent you.lol
     
    pedro quiroga, Mar 16, 2008
    #365
  6. eazy

    eazy Full Member

    Yeah I need to go buy another chip for my camera so I don't run out of memory.

    I need to find someone that knows what they're doing to listen to my system. I don't know anybody else here that installs themselves... just a bunch of high school kids with JL 12W1's sealed thinking they're badass.
     
    eazy, Mar 16, 2008
    #366
  7. pedro quiroga

    pedro quiroga Well-Known Member

    like i said anyone from team db unit can help.they may install their own systems,but they know what they are doing.
     
    pedro quiroga, Mar 16, 2008
    #367
  8. eazy

    eazy Full Member

    I did some testing today. I got out my DMM/clamp and played some 50Hz tones.

    This is my gain right now (red dot indicates)...
    [​IMG]

    I did volume 30/40 and sub at 0 on the headunit playing a 50Hz tone. I got 28.6 volts (AC) at the speaker terminals and 19 amps (AC) on the speaker wire, so 543.4 watts. I did volume 32/40 and sub at 0 on the headunit playing a 50Hz tone and got 33.2 volts and 21 amps, so 697.2 watts. I measured the resistance on my sub wires... 1.0 ohm. What's the deal? Why am I only getting 500-700 watts?
     
    Last edited: Mar 16, 2008
    eazy, Mar 16, 2008
    #368
  9. pedro quiroga

    pedro quiroga Well-Known Member

    ok what kind of voltage is the amp getting?
     
    pedro quiroga, Mar 16, 2008
    #369
  10. eazy

    eazy Full Member

    13.95-13.98 volts
     
    eazy, Mar 16, 2008
    #370
  11. pedro quiroga

    pedro quiroga Well-Known Member

    hmmmm.dont know?
     
    Last edited: Mar 16, 2008
    pedro quiroga, Mar 16, 2008
    #371
  12. eazy

    eazy Full Member

    Me either lol.
     
    eazy, Mar 16, 2008
    #372
  13. pedro quiroga

    pedro quiroga Well-Known Member

    well the higher the vol the more the power went up.try it at a slightly highr vol.?
     
    pedro quiroga, Mar 16, 2008
    #373
  14. eazy

    eazy Full Member

    I think we figured it out... my headunit puts out 2V at the preouts when the sub level is at +6, not 0... I need to put it on +6 then redo the gain.
     
    eazy, Mar 16, 2008
    #374
  15. aznboi3644

    aznboi3644 Full Member

    Seems like you have a reactive load of about 1.5 ohms at 50Hz in that enclosure. Until you can verify that the signal is not clipped than you could potentially have more power to spare.

    BUT....is it loud at that setting though???

    seems right

    - (28.6 volts) / (19 amps) = 1.5 ohms


    (19 amps)^2 times 1.5 ohms = 541.5 watts

    - (33.2 volts) / (21 amps) = 1.58 ohms

    (21 amps)^2 times 1.58 ohms = 696.78 watts


    turning the sub out up to +6 could potentially clip the signal going to the amp
     
    Last edited: Mar 16, 2008
    aznboi3644, Mar 16, 2008
    #375
  16. pedro quiroga

    pedro quiroga Well-Known Member

    maybe he needs a line driver.with say 8-13 volts.

    oh snap i wonder what would happen if i put my eq back into mine.
     
    pedro quiroga, Mar 16, 2008
    #376
  17. electrolytic

    electrolytic Full Member

    ya +6 on the sub is bad news, you don't want to do that. You should be able to set it so it will be more than loud enough at around -2 then you have some room to play. +5 and +6 will definitley give a clipped signal and probably damage your subs. do you have control of an eq in the deck?
     
    electrolytic, Mar 17, 2008
    #377
  18. pedro quiroga

    pedro quiroga Well-Known Member

    pedro quiroga, Mar 17, 2008
    #378
  19. G3n3R@1

    G3n3R@1 Full Member

    do those affect the quality of the signal at all? i might be interested in one.
     
    G3n3R@1, Mar 17, 2008
    #379
  20. jayz85

    jayz85 Full Member

    I dont know about the phoenix gold one... but my brother has an audiocontrol matrix which is line driver and the sound went from good to amazing because of the extra voltage.
     
    jayz85, Mar 17, 2008
    #380
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