How To Fit a Powered Subwoofer Bass Tube In a Car


If you want to add more bass to your car audio sound system but want the simplest subwoofer setup, i would recommend you to install a compact bass tube. The bass tube itself acts as an enclosure for the subwoofer, just like a wooden box made from MDF. Due to the design, it makes it easily removable from your vehicles trunk if you need to obtain emergency boot space at any given time. Simply remove the wires and you can disconnect it placing it back into your garage. As for the best bass tubes for your cars, some brands to look out for are JBL and Bazooka sub Bass tubes. These are very popular at the moment because they provide a very powerful sound for little money, so realistically with these brands you can't go wrong. You want to stay away from boss, fusion or edge bass tubes, they sound no better than a cheap pair of 6x9 speakers and with spending a little more money you can get something small that is worth installing.

Bass tubes also come with a powered subwoofer with an inbuilt amplifier and nonpowered with no amp integrated. So depending on which type you have, you may require to buy an external amp to provide power to it. My personal favourite is the old school car audio JBL BTX 250 bass tube. It was released back in 2006, but if you can get hold of one from Ebay they are something worth holding on to. It has a built in amp, a subwoofer combined with a passive radiator and rated at 300 watts max 100 watts rms, it will sound very impressive. Of course it won't do hair tricks like steave meade designs on youtube or shaking windows, but it will add that extra fill of bass your car audio system is currently lacking in the boom department.

Before even thinking about fitting a subwoofer bass tube in your car, you will need to purchase an amplifier wiring kit. There are different kinds and have a different price. The only difference is you are paying for thicker wire. All kits contain what you need to setup your bass system. A 1000 watt kit will be ideal for any type of bass tube car installation

1) Just to ensure nothing goes wrong from the electrical side of things, remove the red positive terminal from the car battery. If you short out wires during the install process by accident this way no damage will occur to the audio eqiupment.

2) You will need to run the red positive wire from the wiring kit from the front car battery to the rear of the trunk. You will need to try to find an existing hole that wires are already being feed through, this will save you drilling a hole and finding the right size rubber grommet. This step will involve you to remove carpets and the glove box compartment so you can have a better look at whats available.

3) So start off with connecting the loop terminal from the red wire with the fuse box side to the + terminal on the car battery. Feeding the wire through the hole you have found through the firewall.

4) Next connect the RCA cables to the back of the wiring loom harness that is labelled as 'Sub Out' on the back of the stereo. Ensure you connect them matching the colors of the plugs and sockets so the channels are correctly separated. Connect the blue remote wire as well.

5) Run both the RCA cables and power wires onto a separate side of the car under the panels and into the back. This is because running them together could possibly lead to interference such as buzzing and humming noises to be heard with driving through your speakers.

6) Connect the RCA jacks into the amp. Also connect the red positive wire into the 12 volt terminal on the amp, along with the blue remote wire. Now you will need to connect the remaining black ground wire. So find a good location, sand down the area and mount it using a stainless steel bolt to secure it down and provide a good grounding spot.

7) Once you have mounted the ground wire to the cars metal chassis, connect it into the ground terminal on the car amplifier. Thats all the wiring done, but if its an external amplifier you are using you will also need to connect speaker wire to the subwoofer.

8) Reconnect the red terminal back onto the car battery, you may notice a small spark this is totally normal and its something you should not be concerned about. Key the ignition in your car and start up the engine. If you followed the how to install a car amp instructions in the article your bass tube should turn on. Play a favourite CD of yours, adjust volume to your average listening level and adjust the bass boost, LPF and gain controls on the amp for optimal sound quality and performance.
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