Sony, Kenwood, Pioneer, JVC, Alpine, and Bose are very good quality sounding speaker system's for cars.
VocoPro DVDDUET Karaoke System has a good speaker system and controls
Not much, really. A digital system will have much better sound quality, and work better with movies and music that are filmed/recorded in HD.
Bose system speakers are generally considered more expensive but of higher quality than Samsung speakers. Samsung speakers are for those on a budget, although not a small one.
Bose has been known for high quality good sounding speakers and such. A lot of their products have high ratings on Amazon.com and reviewers who hae tried the product have said how good the sound quality is.
The best speaker system is the Klipschorn Floorstanding speaker. They cost about $4000.00 per speaker.
The best audiophile type quality comes from handmade systems made by people who are truly fanatical about audio.They cost as much as new car.The Philips HTS3544/37 System is a very nice sounding system at only 200$
The impedance of the speaker does not determine its quality. Assuming that your amplifier can drive the 4 ohm speaker, you will notice that this speaker is louder than the 8 ohm one.
Ive had a Bose system in my car for 7 years and it has better base and sound quality then most other systems I have herd.
The price of a car sound system ranges depending on the brand and quality of the product. On average speaker systems cost around $200 for an average, middle of the range system.
The center speaker gives you nice loud mids but is not need for good sound with this Aiwa System. However, it is needed for the Dolby 5.1 Surround Sound.
These are completely different systems. The Logitech is a powered system designed to be connected to a computer system. The Pioneer is a passive system (the subwoofer is powered) that is designed to be a speaker upgrade for Home Theatre in a Box systems, and requires a receiver / amplifier. In terms of sound quality, the Pioneer will sound better.
The Logitech S-150 Speaker System is not wireless.