Zapco ST-204D SQ III 4-Ch. Class D Sound Quality Amplifier 13.5" Subwoofer Enclosed Subwoofer System with Dual

Enclosed Subwoofer System with Dual 12W0v3-4 Subwoofers

and the varying impedance of a loudspeaker load

5 dB below rated power (A-weighted

This all-new

Zapco ST-204D SQ III 4-Ch. Class D Sound Quality Amplifier 13.5" Subwoofer Enclosed Subwoofer System with DualThe ST X Series. Class A B and D Amplifiers. The Studio X line of amplifiers from Zapco was designed specifically for todays car audio market. The Studio X compact chassis makes it an easy fit in any car and even in motorcycle fairings. The square, low profile chassis also means it will be easy to trim out for a great looking installation so your system will look as awesome as it sounds. And speaking of sound This is a Zapco amplifier and sound is