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Determining fuse size in amp?

Discussion in 'Car Stereo Amplifiers' started by wrathofthesun, Mar 2, 2009.

  1. wrathofthesun

    wrathofthesun Guest

    I ve got an amp that doesnt have a fuse in it and owners manual doesnt list its size. How do you figure out what size fuse it takes?

    VR354
    Key Features
    Amplifier Type: Multi Channels
    Bridgable: Bridgable
    RMS Power at 4 Ohms: 30 W x 4
    RMS Power at 2 Ohms: 70 W x 4


    Is there a formula for determining this? Help please:confused:

    Also need to know to determine in line fuse size and distribution block
     
    wrathofthesun, Mar 2, 2009
    #1
  2. liftedranger08

    liftedranger08 Full Member

    Well i no my crossfire 400 watt 4 channel amp only has 2 30 amp fuses on it.
     
    liftedranger08, Mar 2, 2009
    #2
  3. wrathofthesun

    wrathofthesun Guest

    probably a 30 then?
     
    wrathofthesun, Mar 2, 2009
    #3
  4. aznboi3644

    aznboi3644 Full Member

    amp from wal-mart?
     
    aznboi3644, Mar 2, 2009
    #4
  5. pedro quiroga

    pedro quiroga Well-Known Member

    thats a good start.
     
    pedro quiroga, Mar 2, 2009
    #5
  6. wrathofthesun

    wrathofthesun Guest

    no, not from wal mart LOL google them
     
    wrathofthesun, Mar 2, 2009
    #6
  7. pedro quiroga

    pedro quiroga Well-Known Member

    its a crossfire 4ch
     
    pedro quiroga, Mar 2, 2009
    #7
  8. cccullen

    cccullen Full Member

    for the life of me i can't find out what fuses that amp takes... 30 would be a good start though.
     
    cccullen, Mar 2, 2009
    #8
  9. liftedranger08

    liftedranger08 Full Member

    Yea i would say 30 or 40.
     
    liftedranger08, Mar 2, 2009
    #9
  10. aznboi3644

    aznboi3644 Full Member

    I calculated 30-35 amps...depends on what load you wire to the amp...if you have a 4 ohm load on all channels a 15-20 amp fuse will be just fine.
     
    aznboi3644, Mar 3, 2009
    #10