Hertz Cento 6X9 2-way component speakers CPK 690 marine audio speaker HOW GFB'S PATENTED VENTING BIAS

HOW GFB'S PATENTED VENTING BIAS ADJUSTMENT WORKS

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Hertz Cento 6X9 2-way component speakers CPK 690 marine audio speaker HOW GFB'S PATENTED VENTING BIASCPK 690(6 x 9) mm (in.) System 360 W 4 Ohm The latest addition to the Cento PRO line is the CPK 690 system equipped with an elliptical woofer to avail of the 6 x 9 door placements, which are particularly common in the North American market, such as for the models of Toyota and FORD groups. Like the other speakers of the Cento PRO line, the woofer cone is made of pressed paper, the most suitable material to obtain a linear and controlled emission even