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next you will have to slowly run a bead of carpenter's glue along the line where you'll be making the first joint. If we connect (2) four ohm speakers (R1 and R2) in series to an amplifier the total resistance will be:The fact is that installing car stereo equipment is not much fun. Connect the power source and speaker connections on the subwoofer's speaker panel. From this we can substitute Ohm's law for any values we don't know.
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For example, you would want to turn on the setting to block all frequencies above 100 Hertz if you are running subwoofers with the amp. We'll achieve this by using 3/4 " MDF for the enclosure with external dimensions of 19. Make 3/8-inch starter holes with a drill and then cut out the holes using the jigsaw. Basics of Speakers How can you really look to build a subwoofer if you dont have at least a basic idea of how speakers work etc? caraudiohelp.
You will need to remove your old radio from the dash so that you can connect the audio cable from your radio to the amplifier. You will have to make sure that your radio has audio outputs, which are also called RCA outs or preamp outputs, so that you can plug your audio cables into them.
If your radio does not have audio outputs of its own, you will need to purchase an amplifier that can accept a speaker-level input or you will have to get a converter that will convert a speaker-level signal to an audio cable signal. An amplifier turn on wire will also have to be connected behind the radio.
Here are the steps needed to remove the stereo:
1. Figure out how the current radio is secured into the dash. In most cases, this will mean taking it apart and removing certain parts of the dashboard or trim. Gather the appropriate tools and lighting if you need it. Place a drop cloth over any dash, console or front seats that you want to protect from debris.
2. Remove any screws that are holding the dashboard or trim pieces in place. Carefully search for screws that hold the dash piece. Be sure to check inside ashtrays, glove boxes for any of the hidden screws. In some cases, the dash piece is held in place with clips that are attached to its back. These clips will need to be removed with a panel tool. Before pulling out the dash panel though, you have to make sure that all screws and clips have been removed.
3. Once the dash or trim pieces are removed, the radio should be easy to see. Typically there are brackets or flanges holding in it the dash. Remove the screws or bolts holding the brackets and flanges.
4. Carefully slide the radio out only far enough so you can reach the wiring on the back. Depending on the space that you have available, you may be able to connect the audio cables without having to unplug the harnesses and take out the radio. Most of the time, you will need to remove the radio from the dash in order to plug in the audio cables and route them behind the dash.