yes, they make several types of computer speakers
Pioneer does make some MP3 speakers. They offer a great variety of different types of MP3 speakers that can be used in your car or in the comfort of your own home.
The Bose company manufactures many different sizes of wireless speakers. They are Bluetooth enabled wireless speakers, and often used for mobile phones or music players in order to make the sound portable.
Yes, Bose does make outdoor speakers. They make speakers for normal outdoor use that are perfect for backyards as well as speakers for marine use. These are perfect for boats.
Faber Castell is the worlds oldest manufacturer of wooden pencils. These days they also make pens and many other products for the office and the studio.
Two of the major companies which make car speakers are Bose and Bang and Olufsen. They are a good place to start as they also make high quality speakers for the home.
"Bose does make desktop speakers and they come in a variety of sizes and shapes, depending on what type one is looking for. They range from small portable speakers to a large speakers that have base and surround sound."
He worked with his boys St. Ignatius and St. Francis Xavier. They started schools around Europe like bosses. Faber is the unsung hero of the Society of Jesus.
I would not advise this, because the guitar speakers are designed to make a guitar sound good, and PA speakers are designed to make vocals sound good. PA speakers, electrically, are low impedence speakers, while guitar amp speakers, electrically, are high impedence speakers.
JVC does make quality speakers, but they've become more niche and will be harder to find.
That depends on whether or not your computer has speakers. If it does, then unplug your headphones, plug in the speakers, and make sure your volume is turned up. If you don't have speakers, then there is no way to do have sound without headphones other than to buy speakers. Most desktops have speakers built in to them, though.
An average car has 4-6 speakers. You can add extra speakers ans subwoofers to make your car really rock, start out around 8-10 speakers.