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Crutchfield Amp Recommendation

Discussion in 'Prime Audio, Electronics, and Infotainment' started by Pr1u5D35TR0Y3R, Dec 30, 2020.

  1. Pr1u5D35TR0Y3R

    Pr1u5D35TR0Y3R New Member

    Joined:
    Dec 30, 2020
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    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    Hi I've been wanting to add a sub and amp to my 17 Prime. On Crutchfield and talking to their reps they keep telling me not to add an amp that has a fuse rating above 30.

    How much damage could be done by doing this? I see others have added high fuse rated amps. Just curious what the downside is by adding the amp? Does it affect the MPG?

    Thank you!
     
    #1 Pr1u5D35TR0Y3R, Dec 30, 2020
  2. AldoON

    AldoON Member

    Joined:
    May 24, 2020
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    Location:
    Milton, ON
    Vehicle:
    2018 Prius Prime
    Model:
    Upgrade
    A 30A fuse on 12 volts would consume max 360W. Let's assume you're using 200W on average.

    The car is rated at 16,100 Wh/100 km.

    If you drove at 100 km/h then in one hour you would consume 16,100 Wh for driving and 200 W for music. The amp would lead to approx. a 1.2% reduction in efficiency.

    Overly simplistic calculation though... just rough order of magnitude.

    I would be more worried about straining the 12v battery. They are known to easily die. Even if the traction battery has charge, you won't be able to start the car if the 12v battery is low or dead. The 12v batteries are not cheap to replace (as I recently found out lol)
     
    #2 AldoON, Jan 3, 2021
  3. thomassster

    thomassster Member

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    Location:
    Colorado, US
    Vehicle:
    2019 Prius
    Model:
    XLE AWD-e
    I'm over at the regular prius side and my car does fine with a remote start with a mile range remote sensor as well as a compact amp with a 10" underseat sub and 65 watt speakers. MPG is not affected for my regular prius. I don't know what the talk is about a 30amp fuse since with an amp, you would place your own fuse directly to the battery from the amp/sub. You should be fine if you keep a conservative system, but these cars won't probably handle huge amount of watts.
     
    #3 thomassster, Jan 28, 2021
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