New and Used Car Talk Reviews Hot Cars Comparison Automotive Community
New and Used Car Talk Reviews Hot Cars Comparison Automotive Community

The Largest Car Forum in the Philippines

Page 1 of 3 123 LastLast
Results 1 to 10 of 22
  1. Trojan
    Trojan is offline Verified Tsikot Member
    Join Date
    Apr 2005
    Posts
    26
    May 4th, 2005 03:41 PM #1
    chiefs and chiefesses

    i need your help in determining what amp to use with these subs that i have with me.

    specs of the subs are as follows:

    Subwoofer Specifications 12IB4
    Fs (free-air resonance): 40.5 Hz
    Qts (total speaker “Q”): 0.634
    Qes (electrical “Q”): 0.673
    Qms (mechanical “Q”): 10.967
    Vas (equivalent compliance): 3.97 112.4
    Xmax (linear excursion one-way): 0.288 7.3
    Effi ciency (1W/1m)*: 92.2 dB
    Sd (effective piston surface area): 78.5 0.0506
    Re (DC resistance): 6.07 Ω
    Znom (nominal impedance): 8 Ω
    Pt (continuous thermal power handling): 125 Watts

    Wired directly to the amplifier:
    A single 8Ω speaker will present a 8Ω load.
    With speakers wired in parallel:
    Two 8Ω speakers will present a 4Ω load.
    With speakers wired in parallel:
    Three 8Ω speakers will present a 2.7Ω load.

    thank you very much for the help! nalilito kasi ako sa "8Ω" what does this mean?
    Last edited by Trojan; May 4th, 2005 at 03:43 PM.
    Reply With Quote Reply With Quote
  2. the_wildthing's Avatar
    the_wildthing
    the_wildthing is offline Tsikot.Com Tambay
    Join Date
    Jan 2004
    Posts
    3,362
    May 4th, 2005 03:44 PM #2
    That is the symbol for ohms... You need an amp that can put out 125W on an 8ohm load.

    Free air pala yang ganyang sub, just found it on the JL website. That's a real space saver.
    Last edited by the_wildthing; May 4th, 2005 at 03:48 PM.
    Reply With Quote Reply With Quote
  3. baurtwellXUV's Avatar
    baurtwellXUV
    baurtwellXUV is offline Tsikot Member Rank 4
    Join Date
    Mar 2005
    Posts
    2,019
    May 4th, 2005 03:45 PM #3
    -trojan-

    ano ba yung amp mo?!
    Reply With Quote Reply With Quote
  4. ILuvDetailing's Avatar
    ILuvDetailing
    ILuvDetailing is offline Tsikoteer
    Join Date
    Apr 2004
    Posts
    11,913
    May 4th, 2005 03:46 PM #4
    whats your budget? branded amplifier prices are 10K and up.
    Reply With Quote Reply With Quote
  5. Trojan
    Trojan is offline Verified Tsikot Member
    Join Date
    Apr 2005
    Posts
    26
    May 4th, 2005 03:47 PM #5
    wala pa akong amp. maghahanap pa. kaya nga i'm asking around muna kung ano ang good match with these before i start looking for an amp.

    thanks!
    Reply With Quote Reply With Quote
  6. Trojan
    Trojan is offline Verified Tsikot Member
    Join Date
    Apr 2005
    Posts
    26
    May 4th, 2005 03:48 PM #6
    i have 2pcs of these subs pa, in a sealed box.
    Reply With Quote Reply With Quote
  7. baurtwellXUV's Avatar
    baurtwellXUV
    baurtwellXUV is offline Tsikot Member Rank 4
    Join Date
    Mar 2005
    Posts
    2,019
    May 4th, 2005 03:49 PM #7
    total JL naman yan. try finding a 300 watts amp. yung rockford, or audiobank... audiobank mas ok sa budget mo...
    Reply With Quote Reply With Quote
  8. ILuvDetailing's Avatar
    ILuvDetailing
    ILuvDetailing is offline Tsikoteer
    Join Date
    Apr 2004
    Posts
    11,913
    May 4th, 2005 03:51 PM #8
    mmm... you would need a lot of juice to power those babies. whats the RMS rating? so that we can narrow down your choices.
    Reply With Quote Reply With Quote
  9. baurtwellXUV's Avatar
    baurtwellXUV
    baurtwellXUV is offline Tsikot Member Rank 4
    Join Date
    Mar 2005
    Posts
    2,019
    May 4th, 2005 03:54 PM #9
    -ILD-

    kaya mo yan. magkano kaya ang budget ni trojan?! and kung brabd concious ba sya?!
    Reply With Quote Reply With Quote
  10. the_wildthing's Avatar
    the_wildthing
    the_wildthing is offline Tsikot.Com Tambay
    Join Date
    Jan 2004
    Posts
    3,362
    May 4th, 2005 03:56 PM #10
    Ah... so having two, and wiring it in parallel will give you a 4 ohm load seen by the amp... now to work out the power required ... 250W?

    Damn I have to read up on my Physics again.

    Given that the current will simply split into the two loads of equal resistance, and P is simply I^2 R, can you just double P? You also get something like 250W if you double I, square it and multiply by 4 to get P.

    Haaay... wala bang Physics guru dito?
    Last edited by the_wildthing; May 4th, 2005 at 04:05 PM.
    Reply With Quote Reply With Quote
Page 1 of 3 123 LastLast
« Previous Thread | Next Thread »
Tsikot

Help in Knowing what amp will match a JL ib4