Results 1 to 8 of 8

Thread: How do i calculate the amp wattage i need?

  1. #1
    Variable Bitrate
    Join Date
    Jul 2003
    Location
    Earth
    Posts
    359

    How do i calculate the amp wattage i need?

    Whilst im saving to put my carputer together.....holding out so i can afford an opus and the new lilliput....im going to hopefully run my stereo from my portable mp3 player.

    However i have no idea what amp to get or what speakers....as i wont be using a headunit i figured ill need a 6 channel amp...but how do i work out the required wattage?

    Do i add the wattage of the door speakers + 6 X 9 + sub together = amp needed?

    Many thanks!

  2. #2
    Variable Bitrate SickVette's Avatar
    Join Date
    May 2005
    Location
    Wesley Chapel, Fl
    Posts
    325
    Just match the amp to the speakers RMS rating. I prefer to go a little higher then the rated RMS so there is headroom.

  3. #3
    FLAC Jahntassa's Avatar
    Join Date
    May 2005
    Location
    Conyers, GA
    Posts
    1,417
    Yeah, stick to RMS ratings. 5 and 6 channel amplifiers may be more expensive and not as powerful as getting a 4 channel for the doors + 6x9's and a monoblock for the subs.

    I'd reccomend getting an external EQ like what Alpine, Kenwood, and I think Pioneer make, because it'll split the 2 channel signal from your mp3 player/carputer to the appropriate 4+1 channels for the amplifiers.

  4. #4
    Variable Bitrate
    Join Date
    Jul 2003
    Location
    Earth
    Posts
    359
    Do i not have to pay attention to peak wattage?

    im looking at these 6 by 9's, and they have a 150w peak but only 30w RMS?

    http://www.caraudiodirect.co.uk/prod...f4eab22134d743

  5. #5
    Variable Bitrate SickVette's Avatar
    Join Date
    May 2005
    Location
    Wesley Chapel, Fl
    Posts
    325
    You do not need to worry about peak unless you plan on using that much power. A 50w RMS speaker will do just fine with 75-100 watts on it.

  6. #6
    Variable Bitrate
    Join Date
    Jul 2003
    Location
    Earth
    Posts
    359
    When it says the RMS of this pair of speakers is 30w, does that mean the pair combined or just a single one, so in fact they would be 2 x 30 = 60w RMS?

  7. #7
    Variable Bitrate SickVette's Avatar
    Join Date
    May 2005
    Location
    Wesley Chapel, Fl
    Posts
    325
    Individual speaker...each speaker can handle 30 watts.

  8. #8
    Banned xdjxklusivex's Avatar
    Join Date
    Dec 2004
    Location
    Diamond Bar, CA (909,951)
    Posts
    2,742
    look at the speakers rms and go up around 50 watts more but make sure its under the peak

    exactly how others said rms 50 / peek 150 / amp should be around 100 watts each speaker

    i would do a 4channel amp for my door speakers and if ur putting subs get a mono or a 2 channel :-D good luck

Similar Threads

  1. del
    By hanzacra in forum General Hardware Discussion
    Replies: 5
    Last Post: 11-27-2007, 02:41 AM
  2. Could my amp be bad or did i miss something?
    By sansoo24 in forum Car Audio
    Replies: 20
    Last Post: 03-05-2007, 01:45 AM
  3. Replies: 3
    Last Post: 12-07-2004, 06:34 PM
  4. Recommend wattage for an AMP
    By King_Aero in forum Car Audio
    Replies: 11
    Last Post: 11-09-2004, 05:46 AM
  5. People with NO HeadUnit, Recommand AMP!!
    By camsgs3 in forum Newbie
    Replies: 30
    Last Post: 07-26-2004, 06:38 PM

Bookmarks

Posting Permissions

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