All

JD-Series Monoblock Amplifier, 250-Watt @ 2-Ohm or 150-Watt @ 4-Ohm Designed to produce a healthy 250 watts into 2 ohms (14.4V, 1% THD), the JD250/1 amplifier is a great solution for powering subwoofers in a cost-conscious system. JL Audio's proprietary NexD™ switching technology delivers large amounts of real-world power output with excellent efficiency and ultra-low distortion. The JD250/1’s controls are located on the input panel. while the power and speaker connections can be found along the opposite end of its extruded aluminum chassis. Signal processing features include a 12 dB / octave low-pass filter, with continuously variable frequency selection from 50-500 Hz, and a variable bass boost EQ. Dual-range, differential-balanced inputs are also on-hand, capable of accepting line-level and speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard, along with a set of preamp outputs so you can easily pass signals to another amplifier.  The JD250/1 is also equipped with an onboard LED-clipping indicator ring, surrounding the input sensitivity control. This useful feature lets you easily set your amplifier’s input sensitivity, quickly and accurately, without special equipment. With the addition of an RBC-1 remote level control (sold separately), you can control the subwoofer level from the driver’s seat. General Specifications @ 4 Ω 150 W RMS x 1 @ 3 Ω 200 W RMS x 1 @ 2 Ω 250 W RMS x 1 Frequency Response 7 Hz - 500 Hz (+0, -1dB) S/N Ratio, referred to highest rated power >80 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >60 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >1000 / 50 Hz Damping Factor @ 2 Ω >500 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) Min.Copper Power / Ground Wire Gauge 8 AWG wire Fuse Rating 30 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass only Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometer No Filter Defeat Function No Infrasonic Filter No Bass Boost EQ Yes Output Polarity Switch No Remote Subwoofer Level Control Optional (RBC-1) Remote Bass EQ Boost Control No Pass-Through Preamp Output Buffered JL Audio JD250/1 Manual

Read more less

RP-Series Monoblock Subwoofer Amplifier 350-Watts @ 1-Ohm, 250-Watts @ 2-Ohm, 150W @ 4-Ohm Skar Audio engineered the RP-350.1D Class D monoblock subwoofer amplifier to be dominant in both power and reliability compared to anything else on the market in its class and physical size. Designing the most efficient, well built, high quality amplifiers is where we start here at Skar Audio, and that is exactly what is delivered in this unit. The smallest of all RP series amplifiers, the RP-350.1D is the perfect solution for when you need versatility but are not willing to sacrifice power output. The RP-350.1D is 1-ohm stable and utilizes a wide array premium internal components that make it extremely powerful and reliable - such as its high speed MOSFET power supply and advanced PCB board layout. Conservatively rated at 350 watts RMS power at a 1-ohm load, with the capabilities of reaching beyond 388 watts at max power output. This compact, small footprint amplifier, is by far one of the most affordable monoblocks Skar Audio has ever released, and is great for powering a pair of subwoofers rated around 200 watts RMS each or a single subwoofer around 400 watts RMS. In addition to all of the above features, the 4 gauge power and ground terminals found on the amplifier allow for maximum current flow and therefore higher power output and more efficient operation. Furthermore, you'll have full reign over your amplifier with the built-in user control panel, featuring a bass EQ switch (0, +6, +12dB), and variable adjustment tunings for gain level, low-pass filter, and subsonic filter. Featuring 4-way protection circuitry, you'll have the peace of mind knowing that you are protected against damage to the amplifier for various reasons - including electrical shortage, over heating, low voltage, and more. This amplifier comes with a remote subwoofer level control (bass knob) allowing the user to have full control over their bass from the front of the vehicle. General Specifications Type Monoblock Car Amplifier Class D Bridgeable No Strappable No Fuse Rating 30 Amp MOSFET Type High Speed MOSFET Power Supply Damping Factor 150< Amplifier Width 6.20" Bass EQ (Boost) Yes (0‚+6 dB‚+12 dB) Output Channels 1 RCA Line Output No Turn-On Circuit Soft Turn-on Circuit Working Voltage 8.5V - 16V Amplifier Height 2.25" Amplifier Length 7.54" Subsonic Control Off - 50Hz Tri-Mode Capable No Frequency Response 20Hz - 250Hz RMS Power at 1 Ohm 350 Watts x 1 Channel (14.4v) Peak Power at 1 Ohm 375 Watts x 1 Channel (14.4v) RMS Power at 2 Ohms 250 Watts x 1 Channel (14.4v) RMS Power at 4 Ohms 150 Watts x 1 Channel (14.4v) Efficiency at 4 Ohms 0.9 Protection Built-in? Yes - 4-Way (Thermal‚Voltage‚Speaker‚DC) Power & Ground Inputs 4 Gauge Signal-to-Noise Ratio 85 dB Low Level Input (Gain) 6V - 0.2mV Low Pass Filter (Variable) 50Hz - 220Hz Power & Protection Indicators Yes - LED Indicators Remote Bass Knob & Cable Included Yes Real World Amplifier Dyno Test Results Dynamic (Peak) Power at 1 Ohm 452 Watts x 1 Channel (14.38v) Certified (RMS) Power at 1 Ohm 378 Watts x 1 Channel (14.36v) Skar Audio RP-Series Amplifier Installation Manual

Read more less