The Kenwoods are going to give a much clear and crisper sound compared to Focal.
Kenwood. Sony is garbage.
Personally Kenwood are better quality but sony are evn better
The 12 Jack Hammer Speaker
The Kenwood KDC-C669 gets slightly better reviews from users.Neither is really setting the world on fire with enthusiasm.
more power is louder bigger speaker is better quality
It depends on the environment, a 2 watt speaker is usually smaller and more portable but a 12.5 watt speaker is louder and usually has better sound quality.
the shielded speaker is better
Use speaker wire that is shielded better and has a lower resitance.
low frequency
It can be played back through any speaker. The better the speaker, the better it will sound. If you are enquiring about the voice of the recording artist, yes, it is suitable for any voice.
An iHome speaker is a better brand to get. Generic speakers will be hit or miss but name brand is almost always the better pick for quality and longevity.
I do believe that flat speaker wires work better. For a great article on this topic visit www.audioxpress.com/reviews/media/504hansen 1 You should find your answer there.