Any American Audio Brands?

I know nothing about car audio, but I need to get some stuff done to the lady's car. Because I am a fierce supporter of my fellow American brothers and sisters, and I want to keep my money here rather than some other country, I want to buy product that's made in America and owned by an American company. I know it may not be the "very best" in car audio, but we don't need the very best, just something that works.

I know that the following brands are not American, but I don't know about the rest out there:

Aiwa
Alpine
Blaupunkt
Clarion
JVC
Kenwood
Pioneer
Samsung
Sony

Can you guys please tell me which brands out there are American? Thanks for your time.