ALPINE SWT-12S4 1000w 12" Car Audio Subwoofer in Bass Tube Enclosure 4-Ohm Sub. (1)RockvilIe RWK81 8 Gauge Complete Amp Installation Wire Kit with 100 % Copper RCA. (1) RockvilIe RXA-T1 1500 Watt Peak/750w RMS 2 Channel Amplifier Car Stereo Amp. Package Includes: (1) Alpine SWT-12S4 1000w 12" Car Audio Subwoofer in Bass Tube Enclosure 4-Ohm Sub. The Hifonics logo illuminates when the amp is powered, making a statement even in the dark. Molded secure connections are used for all wires and angled for ease of access during installation.ĬLASSIC HIFONICS LOOK - The ZXX Series maintains the classic feel of Hifonics amplifiers and include an illuminated logo on the front of the amplifier. HIGH QUALITY CONNECTIONS - RCA outputs and a daisy chain multiple amplifier build eliminates additional signal cables from the source unit. High temperature impact resistant inputs with hex screw terminals allow secure connections and are erosion resistant. MADE TO LAST - Low noise preamplifier generates maximum low voltage signal from source unit, minimizing distortion. Old school Hifonics aluminum heat sink maintains superior heat dissipation to keep your car audio sounding smooth. This mono amplifier was built for driving subwoofers and subwoofer systems, maintaining the highest sound quality sound for your car audio.īUILT FOR POWERFUL SOUND - Minimize heat generation with the PWM MOSFET power supply providing stability through the PC board. Since my filters are not perfectly matched, the effect I'm having is getting some attenuation.CLASS D AMPLIFIER - Class D topology ensures high efficiency with big power and a small footprint. The problem I'm having is that I'm getting some flutuations of gain around the cuttoff frequencies, since for example if the cut-off frequencies are perfectly matched, the adder circuit adds 2 signals with 1/sqrt(2) of a specific gain, resulting in a gain of 3db. The output of these filters should be added in an adder circuit, with variable gain through a potentiometer. The low-pass should ideally have a cut-off frequency of 100Hz, high-pass 4kHz, and the pass-band has a 100Hz high-pass filter and a 4kHz low pass. The pass-band filter uses a Sallen-Key low-pass and high-pass circuit.
I'm doing a project and one of the steps consists of filtering a signal through a low-pass, band-pass and high-pass filter.Īll the filters are Sallen-Key with a passband gain of 1.
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