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  • Adding amp?

    I currently run with a fairing and a Sony stereo (which I'm replacing with a JVC marine unit and 2 polk MM 6x9 speakers). I bought some 6.5" polks years ago for my lowers (https://jtdcycleparts.net/en-gb/Lowe...a-Motorcycles/), but never installed them (when I got the lowers, they sit pretty low on the bike, so I kinda figured speakers blowing music to my shins (my shins don't have ears).... what's the point, a waste?. I was considering replacing my mutazu trunk (which I've never cared for the look). with a HD tour pack clone. If I go that route, I can use the polks for that. I currently get some distortion (sounds like crap) at higher levels. I know the charging system rating of my 2004 R* isn't that great (I don't remember what the charging system can handle). I have zero experience with stereo amps. Looking at possibly adding one. I just am not sure of the power pull of one; if it isn't that bad, is it worth the cost, installation issues, and ongoing hassles (such as heat, etc) as time goes by? Also if anyone can recommend how to wire this, either to drive 4 or 6 speakers. that'd be awesome. I was considering moving up to an Indian Roadmaster or HD Ultra Limited, but don't think its in the cards anytime soon.

  • #2
    2004 and earlier were known for having weak charging systems, so you'll need to upgrade the charging system. It's pretty easy to do, just follow the instructions in that link. If you really want to lessen the load on the charging system, you can replace your headlight and turn signals with LEDs.

    An amp will definitely help with the distorted sound at high volumes. If you want to keep things cool, you're better off running smaller speakers like 5.25 vs 6x9s. If you only plan to put speakers in the fairing a 2 channel amp is fine, but if you want to add speakers in the trunk, you'll need a 4 Channel amp. You can always get a 4 channel amp and add the other speakers later. Keep in mind, the output of the amp is divided by the number of speakers. So a 50 watt amp, with 4 speakers, will have a max output of 12.5 watts. Crutchfield is a good site for equipment and they have really good tech support. I'd give them a call to ask about recommendations. I'd ask them about lowers too. I'm not 100% but I'm pretty sure you'd have to run them in parallel, which effects ohm impedance, and if done wrong it can blow out your speakers.
    Last edited by Doc_V; 02-22-2019, 02:06 AM.

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    • #3
      im running two amps in my bike. a focal impulse 4 channel and a arc moto. both are small good amps that dont draw a huge amount of power. but i would either upgrade the charging system or take strain off yours buy doing a led headlight like the truck lite p7 as well as led turn signals with a no load flasher to keep the flash rate the same. if you wire in load resistors you just defeat the power saving opportunity.
      my Wallet is Getting dangerously close to spontaneous combustion

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      • #4
        Thanks for the help!

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        • #5
          Doc, where the link for upgrading charging system? I can't find it

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          • #6
            Not sure why that didn't work... let me try again...

            Regardless of the model year--'99 to present--the Road Star is designed as a no-apologies, big, bad, boulevard cruiser. As such, the electrical charging system is made for the K.I.S.S. principle--Keep It Simple, Stupid. But this can conflict with our bike's ability to transform its character.

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