No announcement yet.

Wiring & Setup Advice?

  • Filter
  • Time
  • Show
Clear All
new posts

  • Wiring & Setup Advice?


    I need some advice on how to wire up my audio system. I have quite a few questions so Ill try some it up nicely.

    Audio Setup
    HU: Kenwood KDC-BT7539U website
    Sub: Rockford Fosgate website
    Amp: GM-D510M website
    Front Speakers: Boston Acoustics PRO60SE 6.5" (coming in the mail) website
    Wiring = 4Gauge... running about 4 - 5 metres for power, straight into sub amp.

    Q1. For the specs of my amp, it has:

    Continuous output power (14.4 V): 1 x 500 W (20 - 240 kHz/2 Ω), 1 x 300 W (20 - 240 kHz/4 Ω)
    1 x 490 W (4 Ω) or 1 x 630 W (2 Ω) DIN Power (DIN 45324, +B =14.4 V)

    I have my sub wired for a 4 ohm load for the amp...what I don't understand is the two diff rms ratings for 4 ohm, the 1x300 and 1x490. Which one is it. I was thinking the 1x300 is if its amping the full spectrum and the 1x490 was if it has a LP filter on. Could someone please clarify that?

    Q2. So I just bought some new front speakers rated 125w RMS and 1000w Max each. Suppose I get an appropriate amp, does it matter if i match the Max power....cuz won't it cause clipping on intensive parts? I havent found one amp with 250w rms and 2000w max, what should I be looking for...I want to match it perfectly because I wanna pump it but not destroy them.

    Q3. I have 1x4 Gauge going into my subs amp. AFAIK, the cable is a bit overkill for the power requirements of the sub, but how do i go about using a distroblock for my second amp to power my front speakers (not interested in powering my non existing back ones atm). Do I split the 4Gauge into 2x8 Gauge? I was reading something about it not being good to run 8 guage or lower (something that sounded silly) to an amp powering speakers...what is the best way to split the power and have enough for both, but I need room to expand for 2 more speakers in the future (probably another 2 channel, unless i their is a decently priced 4 channel). What is the best way to sort it out? What guages do I split to and what sizes.

    And then what do I do about ground, do I use a distro for that to? I have no idea how it works.

    Hopefully you guys understand what im trying to say. I just want it setup properly the first time before something breaks.

    Thanks in advance,
    Regards, klunkeh

  • #2
    q1, i really don't know why they did this, but i would go by the lower number to make sure that the sub/amp will work together..

    q2, go by the rms rating only

    q3, you can always use a sheet like this to determine your power requirements, and wire sizes.

    Originally posted by the sticky
    This forum is dedicated to CarPCs and installing them in your car.

    The car audio forum is dedicated to integrating your car audio system with your CarPC.

    For specific questions related to car audio equipment systems that do not include CarPCs, I would recomend checking out car audio specific forums:
    et. al.

    There is a chance that someone on here might have an answer for you, I would just hate for you to wait around for it when I know you could get an answer much quicker on a dedicated forum.

    Good luck.
    My OLD 2001 Mitsubishi Eclipse GT:
    "The Project That Never Ended, until it did"

    next project? subaru brz
    carpc undecided


    • #3
      Speaker Max power does not effect clipping - the amp controls/effects that.

      RMS is the only value that makes sense and is useful. (IE - RMS is RMS; max used to be "music power" used to be 2xRMS, but is often defined to any maximum you want - like 100W RMS might be 1GW for 1psec.


      • #4
        Thanks heaps for

        Do you's reckon that this amp would be suitable, because its [email protected], but the speakers take 125 watt at 3 ohm. Do you think it would be 3 ohm each or 3 ohm combined?


        • #5
          Hello,When choosing speaker wire, consider the quality of your gear. In other words, the build-up quality of the speaker wire should match that of your speakers and amplifier. Ensure also that your speaker wire support the power rating of your sound system.