Cheap and Easy Car Speakers
Now you have to attach the circuit board. Mine had four important things attached to it: a volume knob, a little green LED, a plug for power, and a plug for the left speaker. The latter two will come later and face away from the plastic. The knob and the LED will stick out the front of the plastic, so they need holes. Mark where you want them and drill. Once that’s done, put the circuit board in between the speakers so that everything is in the right place. I found that the easiest way to attach it is with a piece of duct tape (no one’s going to see it).
These PC speakers are really bad quality, low frequency range, and due to placing them one near the second no stereo efect at all.
If you have too much interference in the air in your area, you always may use the transmitter which the aerial wire of your radio, and no other FM signal may reach your radio while the transmitter is ON and you are listening an external source, as ipod. Once you switching the ipod or the transmitter OFF, the electronic circuit connects your car aerial back to the radio receiver, so you able to receive the FM signals by the regular way.
Just search eBay for FM Modulator and you will get hundreds of results, with the same price you payd for your project.
Just imagine, that if such an equipment made for listening CD changer via your regular on board FM radio, isn it clearly indicates it is the most effective and high quality way ?
So the work you did is clean, but kinda useless
Sorry for my IMHO.
Thanks for your comment, I didn know all that about the FM modulator. As for the speakers being low quality and low frequency range, I haven found that to be a problem in my personal testing. The compartment does a little for the bass amplification, and the quality is more than suitable. I experimented with some lower quality amplifier circuits and speakers, and these are pretty good. It works for my purposes at any rate. You may be right about the FM transmitter being a more efficient solution, but I made this project mainly because it was fun, it looks cool, and I had a pair of computer speakers on hand. Also, I was trying to see what could be done with computer speakers and maybe give other people ideas for other applications (I think someone said they were going to use it on a motorbike). Anyway, I wouldn exactly call it useless.
I do not agree. I have always had at best medeocre success with FM transmitters, and as mentionned here several times, you have problems with overwash from other people using the same frequency, and worse, the classic problem in a big city finding an unused frequency without having a local station walking over your transmitter. Adding to that my car has a CD and a tape deck, a 10 buck solution is a tape to mp3 adaptor. Clearly not as elegant, but far better sound quality and reliability.
If you want FM Transmitters to work perfectly, it simply a matter of buying a antenna adapter and running it in through a toggle. Basically, when you want to have your iPod running through the deck, toggle off the antenna which disengages the antenna from the back of the deck. It won matter WHAT channel you on, or WHAT anyone else is doing because you disengaged the antenna. Whenever you want to listen to the radio again, simply flip a switch and re engage the antenna.
I had my car setup like that and it worked perfectly. Now I got an in dash DVD with Bluetooth, so I don use the old system anymore. But the toggle always worked good.
I work in the Los Angeles area and live about 70 miles away in another radio market. Until I got my latest car with an Aux input, I used an FM transmitter (an iRiver). It worked just fine. I had to find a clear frequency, but I managed to find one even in this crowded radio market (90.5 worked well for me most of the time BTW). The transmitter I used had three presets and the full frequency range, so I was able to switch between channels depending on where I was.
It wasn perfect. There were times when I would pick up somebody else transmitter (though technically, they not supposed to be strong enough to interfere between cars). Overall, though, it worked.
1) Make sure you get a transmitter that has the full frequency range. I had one with a handful of presets, and it was horrible.
2) If you have a long commute, get one that lets you store your own presets.
3) If you don listen to the radio, disconnect your antenna. If you do listen to the radio, you can hook up a switch. My car had an antenna that was easily unscrewed. I did this with the first transmitter I had which only let me pick from about 10 frequencies. With the last transmitter, I didn have to.
4) You may not be able to charge and play at the same time. I found that I would pick up interference from the charger.
The most important thing I learned, however, was:
5) Do not crank your media player up to full blast. You want to keep the volume down to around 50% or maybe lower. If you turn it up too high, it will cause distortion when it transmitted over FM and it will sound horrible. I had a friend with a transmitter who said it was the worst sound ever, until I told him to turn down his player.
I believe FM transmitters are a much better way to go. You just have to find ones that will allow you to choose the frequency you transmit on. That way you avoid any interference. So say that all suck is an over generalization because that would me that you are saying that FM in general doesn work at all in your city. Which is obviously not true because there are radio stations that do work without being interfered with. I pretty sure you can get a nice one for $24 off eBay. I picked up mine at a local Canadian Tire for like $15 and never had an issue with it in my town (population 500,000).
Still, this is a good instructable. It does take a lot of work/creativity to make what you did. Good work!
I think this is a good idea, I listen to pandora at work through a set of old computer speakers. You can get them fairly cheaply too at a yard sell/e bay.
I was wondering have you thought about using a set that also has a sub woofer with it? You could place the sub under one of the seats and you would get the full range of music.
Also since your 12v power is behind the compartment, what about taking the bottom out of the compartment and tie in another power point to the one that sticks out of the back? That way you can not tell that anything is there when the top is closed.
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