On the Internet, people have described this Stromberg Carlson Custom 400 Speaker as a Wide Range, High Fidelity, High Efficiency, (Coaxial 2-Way) Speaker with large Alnico Magnets on both the Woofer and the Tweeter, providing Solid Sound Reproduction across the entire frequency range.
Item Tag: Custom 400
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Matched Pair of Stromberg Carlson 15″ Coaxial Speakers ( Custom 400 )
Maker : Stromberg Carlson. They are one sweet sounding speakers. – Model : Custom 400. – Size : 15″. What you see is exactly what you get.