zapco Z-150.4 II Owner's Manual page 18

A similar setup uses a pair of full-range speakers with a mono subwoofer.
• Front filter is set to HPF, the Multiplier is off (out), HP frequency is set just
above the bottom of the full-range speaker's frequency range, where you will
also set the woofer crossover
• Set the rear Filter to LPF/BPF to have both filters active and the multiplier to
off (x1). Set the rear LPF frequency to the desired woofer crossover point
(which should match the front high pass filter), and set the HPF frequency to
15Hz ~ 30HZ as a sub sonic filter
2Ω ~ 4Ω
4Ω ~ 8Ω
Want more power? Instead of four channels of 165 watts, you can have two
channels of 550 watts each by bridging both front and rear amp sections to one
speaker each.
• Speakers must be a minimum of 4Ω impedance
• Using RCA "Y" adaptors of 1 female-to-2 male, put the left signal RCA into
both L and R inputs of the front channels and put the right signal RCA into
both L and R inputs of the rear channels
• Do not use the optional dash bass control as it will only work on the speaker
connected to the rear channels
16
2-Way w/Bridged Mono Sub
2Ch Bridged