Review on JBL GX642 2 Way Coaxial Loudspeakers by Jay Arnold

This is one of the most efficient speakers on the market with 3 ohm impedance and 92 dB sensitivity. I didn't add an amp to a 1991 head unit that puts out only 12 watts per channel with low distortion - and with this speaker setup I don't need an amp to make it loud enough to make you scream. talk to the passenger. The improvement in sound over the previous setup, which featured stock one-offs up front and a previous owner's upgrade at the rear, was significant. But to be fair to JBL, throw in a small amp and you'll get plenty of bass out of this kit. In terms of fit, these speakers are a pretty conservative buy, less so than the more expensive 5 1/4 speakers on the market. but still well suited for older Euro compact and economy cars. The shallow depth allows speakers to be fitted into smaller speaker holes, however some smaller vehicles may require minor modifications to the holes. The woofer cone is much larger than many 5 1/4" woofers - JBL really makes the most of the available space in the mounting frame. The rim of the woofer is quite large, which allows you to push the sound waves out as much as possible. A big magnet and a large coil can be used. This also means you may need to modify the stock speaker covers as any OEM speaker of the same size will have a smaller speaker element and little if any protrusion.