Free Shipping on All Orders 1-866-764-1801

Vist our Online Store
+ Reply to Thread
Results 1 to 3 of 3

Thread: Power Draw

  1. #1

    Member Sales Rating: (0)

    Join Date
    Nov 2010

    Default Power Draw

    So I have been researching this for a while and have yet to find the 100% answer. I understand that speakers and chips pull the amount of power they need, but what about amplifiers and power supplies.

    So lets say I have a 750 watt amp and a 700 watt sub. I have my volume turned to moderate level and the speaker needs 350 watts. Is my amp still pulling 750 watts from my electrical system or only the 350 my speakers requested plus the efficiency and amp requirements(lets say 350+50 into heat + 50 to drive the amp =450)?

    Also for power supplies, they have to have the power required at all times. If I hook a 125w power supply to my carputer, is it always burning 125w or just what the computer draws?

    My reasons for asking are I am at the threshold for major electrical upgrades and if the amps and power supply are pulling less then max and only whats needed, its not an issue. However, if they pull max I will need to get the electrical done before I do the install.

  2. #2

    Member Sales Rating: (0)

    Join Date
    Dec 2003
    Chattanooga, TN


    They only draw what they need when they need it. Speakers and power supplies.
    polkaudio sound quality competitor since 2005
    MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
    08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st

    polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D

  3. #3

    Member Sales Rating: (0)

    Join Date
    Nov 2010


    Thanks for the quick response

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)


Similar Threads

  1. power wiring/system draw questions
    By ahardy17 in forum Car Audio & Electronics
    Replies: 5
    Last Post: 09-10-2009, 08:43 PM
  2. Where do I draw the line?
    By swerve in forum The Clubhouse
    Replies: 22
    Last Post: 04-17-2007, 12:05 AM
  3. too much draw for my car?
    By iworkfortweeter in forum Car Audio & Electronics
    Replies: 6
    Last Post: 03-20-2007, 11:10 AM
  4. subwoofer electrical power draw / what's a watt?
    By starsky in forum Subwoofer Hookup & Bass Management
    Replies: 2
    Last Post: 01-26-2007, 09:20 PM
  5. Power Conditioners and power draw......
    By brettw22 in forum Electronics
    Replies: 25
    Last Post: 09-06-2005, 01:01 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts