If you want more sound in your car then adding speakers is the solution. You might have noticed that in the audio industry there are dedicated products for both home and car use. The main difference between the two is the ohm load is different. Car audio speakers are usually rated at 4 ohms and home speakers are rated between 6 and 8 ohms, so there is a slight difference between the two but its not so significant. Now this is not a disadvantage at all, it just means that it will be pulling less power from your car amplifier it is connected to. If you have some good old Sony, Aiwa or Technics hifi speakers that are not getting used then you might as well put them to use if you have an existing car amplifier installed into your car.
Now you can connect literally anything with a voice coil that is home audio related to a car amp whether its a speaker or a subwoofer it doesn't matter. This is because you can adjust the low and high pass filters to setup certain frequencies to be only sent to each component. For example, you can setup the LPF to 80HZ for the home audio subwoofer to only send bass to it so it doesn't play vocals. Ideally you might require a 4 channel amp, however you can also make this system work if you have a two channel.
1) Depending on the type of home audio speakers you are using, you might have more than one set of speaker wire to connect. If its a three way system, so a subwoofer, midrange and a tweeter, you will need to connect the subwoofer to a separate channel and the others for treble to its own independent channel. The cable that is used for the subwoofer is usually colored in black and the cable that is used for the other smaller speakers is yellow in most cases. If this is the case, you will come across two sets of cables. So get a wire stripper tool and remove the plastic coating from the speakers wires.
2) Now you will need to connect them to the amp. So connect the speaker wire that connects to the subwoofer to one set of channels of the amp. Remember that the wire with a stripe going down is positive and the plain coloured one is negative. So unscrew the terminals on the amp for the channel and insert the wires into them considering correct polarity. Once you have done this tighten them up to ensure a firm connection, as you don't want them to come out when the bass is playing from the vibrations.
3) So now that the subwoofer is connected, you will need to connect the other smaller speakers inside the box. These will be used just specifically for treble and vocals they will not play bass at all. So connect the remaining wire which is for these other speakers and tweeters into the second channel of the amplifier.
4) Now all the connections are made, you will need to setup up the crossover filters to ensure that each speakers gets the right frequencies to sound the best. So for the channel that you have connected the subwoofers for, you will need to setup the LPF to 80HZ. This will purely sent just bass to them, for the other vocal speakers housed inside the enclosure, enable the HPF for the channel that they are connected to and set it at around 80 HZ. This will play frequencies above 80HZ to the speakers so they can focus more towards producing treble and playing no bass at all as thats the subs role to play.
3) So now that the subwoofer is connected, you will need to connect the other smaller speakers inside the box. These will be used just specifically for treble and vocals they will not play bass at all. So connect the remaining wire which is for these other speakers and tweeters into the second channel of the amplifier.
4) Now all the connections are made, you will need to setup up the crossover filters to ensure that each speakers gets the right frequencies to sound the best. So for the channel that you have connected the subwoofers for, you will need to setup the LPF to 80HZ. This will purely sent just bass to them, for the other vocal speakers housed inside the enclosure, enable the HPF for the channel that they are connected to and set it at around 80 HZ. This will play frequencies above 80HZ to the speakers so they can focus more towards producing treble and playing no bass at all as thats the subs role to play.
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