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  • Help me understand something

    I have pieced together everything that I'm going to use to get my CarPC going, however, the one thing I can't understand is how to get the audio from the CarPC (RCA out) to the factory wiring harness. I have an 02 Nissan Maxima no Bose, no nav and I assumed there would be a wiring harness adapter that would plug into the factory harness and be RCA on the other end. If there is such a thing, I can't find it.

    Do I really have to take the RCA out from the CarPC, splice into each plug, and find the pin-outs and wire all the left speakers from the one RCA plug and wire all the right speakers to the other RCA plug?? There has to be a better way. This is my final step that I need to figure out, so please point me in the right direction.

    And yes, I searched. I've been reading for hours.

  • #2
    What are you using as an amp? sound cards dont put out enough watts to power car speakers. they put out enough watts to power headphones....but not speakers....even desktop speakers, they have to be plugged in to an outlet (the majority of them).

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    • #3
      Wow, now I feel retarted. I should have guessed that, but I really wasn't sure. How do you wire up the speakers to the amp? RCA out from CarPC to the amp and than bare wire up to the harness adapter?

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      • #4
        The amp will have RCA in, use that to connect the carpc to the amp. The amp will also have terminals for the speakers themselves. Personally I would bypass the wiring harness by putting my own wire to the speakers, depends what type of amp you get though...the small wires the factory installed can only take so much... however, you can buy a wire harness from an audio store that plugs into your existing harness but the wires are free so that you can solder/splice into the wires you need. Then if you need to go back to stock form its much easier, just unplug the harness you installed and plug the radio back into the harness. (this is assuming you are ditching the radio...) If your keeping the radio, you need to splice into the wires.

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        • #5
          Ok, thanks for the help, Squadfer. I am ditching the radio and the CarPC is going to be my new means of music I just need to find out how many speakers I have (I honestly don't know ) and find a cheap-o but decent amp.

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          • #6
            The cheaper option is to see if you can wire an auxiliary connection into your stock headunit, so the headunit is acting as the amplifier. You may or may not be able to do this based on the headunit. If it allows you to control a CD changer, there should be an adapter. A Maxima specific forum would be a good place to look for help.

            Another option is an aftermarket headunit with an aux connection.

            There's a bunch of way to go about doing this.

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            • #7
              Originally posted by Machinehead View Post
              The cheaper option is to see if you can wire an auxiliary connection into your stock headunit, so the headunit is acting as the amplifier. You may or may not be able to do this based on the headunit. If it allows you to control a CD changer, there should be an adapter. A Maxima specific forum would be a good place to look for help.

              Another option is an aftermarket headunit with an aux connection.

              There's a bunch of way to go about doing this.
              Well, I'm taking out the stock headunit and replacing it with the Lilliput 701 and the CarPC. I used to work at Best Buy, and just for laughs, I went over there to ask about amplifying the CarPC and the guy didn't know what that was, so I talked to the installers and they both said that amplifying stock speakers with a standard amp will blow them up. So, since all I want to do is get sound from the CarPC to the speakers and I don't need amazing sound, just sound like I have now, they recommended I get a 4 channel 30 watt amp and that should do it. That true?

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              • #8
                You mentioned you didnt have the bose setup. With that info i'm going to assume you have 4 speakers, 2 in the front doors 2 in the behind the rear passenger headrests. I would take machinehead's advice on going to an altima forum to find the answer to how many speakers you have in your car though. An amp that I'm am currently eying for my specific build is the Alpine MRP-F250, 120 bucks at crutchfeild. I cant find a better deal then that anywhere else as far as price + name brand.

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                • #9
                  I made a post before you, Squadfer, but because I'm new, it didn't show up yet.

                  Anyway, I am under the impression that you can't use an amp like that with stock speakers. And I checked the Maxima forums, and I have 4 speakers. But I thought an amp like that will produce too much power and blow up the speakers, or so I've been told.

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                  • #10
                    Get a low power amplifier and use it to power the stock speakers. The easy way to do it is to get an aftermarket wiring harness and run the speaker wire from the amplifier to the aftermarket harness. This way its useable with the stock speakers. If you want to do a full upgrade with speakers all then I would run speaker wire into each door therefore bypassing the stock harness all together.

                    Easiesy way for you since you didn't mention upgrading speakers is probably going to be a 200x4, or even lower if you can find such an amp, and running the speaker wire into the aftermarket harness.

                    Aftermarket harness = 18.99
                    Amplifier for 200x4 ~ should run you about 100-150. (If you can find it)

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                    • #11
                      Well, you can use an amp with stock speakers, but you do run the risk of blowing them if you turn the volume up to high. Of course you can blow pretty much any speaker by that method.

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                      • #12
                        So what would be a good, low power amp for use with the stock speakers? The guy at Circuit City audio told me to use a head unit.

                        I don't think he was very bright and understanding of what I wanted to do.

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                        • #13
                          Using a head unit will be the safest way to do it. You can use an amp with stock speakers....just keep the gains on the amp low untill you decide if you want to upgrade your speakers or not. Then again, even a new head unit can blow the stock speakers if turned up high. I've done it. It just comes down to being careful with the volume. Any amp that runs 45watts RMS or less is a good amp for your needs. Just remember...be careful with the gains, if it sounds distorted...then your putting to much power to your speakers.

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                          • #14
                            Originally posted by Squadfer View Post
                            Using a head unit will be the safest way to do it. You can use an amp with stock speakers....just keep the gains on the amp low untill you decide if you want to upgrade your speakers or not. Then again, even a new head unit can blow the stock speakers if turned up high. I've done it. It just comes down to being careful with the volume. Any amp that runs 45watts RMS or less is a good amp for your needs. Just remember...be careful with the gains, if it sounds distorted...then your putting to much power to your speakers.
                            Thanks for the help. I am so new to this CarPC thing, and I want to make sure I fully understand this... The CarPC would get run to an amp, preferably 45RMS or less, and from the amp, get run into the car sound system.

                            After some research, it seems Road Runner is the best front-end, so I would use that, and when I need to adjust the volume, I can do that from RR and it would adjust the volume being output from the CarPC, which means I need to leave the amp on a decent setting for output, so that adjusting the CarPC won't make it too loud (or too quiet).

                            I posted a thread in the Newbie section, but I guess I'll post some of that info here. I updated what I want to do to make this work, and these are the components I'm going to use...

                            Lilliput 701


                            And for the CarPC...


                            Specs:
                            Complete 4th Generation 1.6GHz Dual Core Car Computer

                            Our complete 1.6GHz Dual Core Carputer is pre built and packed full of hardware including our redesigned aluminum Mini ITX chassis, a M2-ATX automotive grade power supply, 120G Toshiba 2.5" SATA hard drive, Intel D945GCLF2 motherboard with embedded Dual Core 8W 1.6GHz Atom 330 CPU, 1024/1G DDR2 RAM, and USB DVD combo drive.
                            Ideal Features

                            * Exclusive vibration and shock resistant hard drive mounting system
                            * Regulated 12v output for LCD monitor power
                            * Smart 160W automotive grade DC to DC power supply features automatic startup and shutdown with adjustable timing settings, and more
                            * The included USB DVD drive can be mounted remotely for easy access.
                            * 7 pin S-video output for use with existing factory NAV/GPS screens (compatible with RCA to S-video adapters)
                            * VGA video output for high resolution monitors
                            * RCA audio outputs for easy audio integration
                            * Built in Bluetooth for wireless keyboards, hands free cell phone, and more (keyboard, software and microphone not included)
                            * Locking power harness
                            * Built in mounting brackets for easy installation
                            * 90 Day Parts and Labor Warranty

                            New Features:

                            * Hard Drive and System LED Lights
                            * Redesigned air intake for enhanced airflow and increased cooling
                            * RCA audio line outputs
                            * Miniature reset switch

                            Found here:http://store.mo-co-so.com/index.php?...b10333762255fd

                            I would also do a Slot Loading DVD Combo Drive, Internal 802.11 B/G Band WiFi w/ External Antenna, Sirf III USB GPS Receiver, and Increase Hard Drive to 320 GB. So for the screen and the CarPC, it would be like $800 or so. How does this system look? Any reviews from anyone?

                            Now all I need to do is find a suitable amp from somewhere. Any suggestions on one for what I need it for?

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                            • #15
                              Bump.

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