Established in 1999, Dianmen Digital Technology Co., Ltd. is one of the leading China mono amplifier manufacturer and wholesaler of audio, video and communication products in China. We can offer you the complete OEM & ODM mono amplifiers service, including, but not limited to, the products designing, moudling developing, the plastic injection and hardware producing, firmware designing and products producing. We have established an integrated set of QA system of efficiency, which strictly administrates through the whole process including design, manufacture, sales and service. All of key processes for quality control are performed according to ISO9001:2000, CE, FCC, E-MARK and RoHS. Also we collect and offer cool and the newest 2009/2010 fashion products to you.

mono subwoofer car amplifier
200 watts RMS x 1 at 4 ohms (400 watts RMS x 1 at 2 ohms)
variable low-pass filter (40-240 Hz)
selectable bass boost (0, 6, 12 dB at 50 Hz)
preamp- and speaker-level inputs
The superior efficiency of a Class-D amplifier means higher power output and greater compactness than an analog amplifier offers.Class-D amplifiers overcome the inefficiencies of traditional Class-A or AB amplifiers. Pioneer's Class-D amps transform very little power into heat so a higher percentage of the power supply (67 %) is transformed into the load. This results in a very compact amp which needs less input power to produce very high output power. The Class-D amplifier's PWM (Pulse Width Modulator) modulates the original audio input signal with a triangulated signal wave which has a much higher fixed frequency. The result is a digital signal which contains both the input signal and a band of frequency components around the modulation frequency. A LPF (Low Pass Filter) then filters out the high frequency pulses and the resulting amplified output signal is then sent to the subwoofer and/or speakers.Bass boost gives you more control over how your music sounds. It lets you set the optimal bass level for each speaker/sub connected to the GM-D7400M, so the tone controls from your headunit can do what they do best. And because this is selectable bass boost, you can set the level at 0dB, 6dB, or 12dB, whichever sounds best to you.Built into the GM-D7400M is a very smart crossover network. It works like a gateway, routing the big bass signals (adjustable from 40 to 240Hz or lower, at -12dB/octave) and filtering out higher-frequency signals to that subwoofer. This optimizes your system's efficiency and delivers the best possible sound quality.The GM-D7400M's speaker level inputs allow you to connect your OEM unit (or any unit that doesn't have the typical RCA-type inputs) without having to buy add-on adapters. So, the install goes faster, you save money, and you've got a Pioneer amp in your vehicle.

Full MOSFET power supply
High/full/low selectable crossover
18dB bass boost at 40Hz
High/low level inputs with floating ground
Tri-mode capability with 3-way protection circuit
POWER ACOUSTIK SL2-460 Silver Edition Amplifier (460W, 2-Channel) 2-channel; 460W max @ 4ohm mono; 4ohm RMS: 95W x 2;2ohm RMS: 120W x 2;Blue reactor light bars; Chrome-end caps; Full MOSFET power supply;PWM circuitry; Full selectable crossover (High/Full/Low); 3-way protection circuit;Freq resp: 10 Hz30 kHz;S/N ratio: 97 dB;0.02% THD; System distress indicator; Platinum-plated RCA connectors;V-angled transparent terminals "Silver Edition Amplifier (460W, 2-Channel)"
In the heart of the amp, the torodial power transformer generates a big sound while reducing distortion by shielding the sound from stray magnetic fields. With the Amp 5.3, you can control the volume directly on the unit, or by adjusting the signal source component (such as your receiver, preamp, etc.)

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