You can find top-rated car speakers among the vast inventory on eBay. 1 JBL GTO 6×9 Speakers JBL GTO speakers are at the top of any list comparing quality to price. JBL’s reputation across the gamut of speakers from home theater to Bluetooth headphones is consistently excellent. You will need Adobe Acrobat Reader in order to view these documents. You can also modify the image cells in a template by dragging the margin guides or cell boundaries.