Amplifiers-What to look for |
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RMS Power vs Peak Power |
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The RMS rating tells you the amount of power (watts) an amplifier can produce on a continuous basis. The peak rating tells you the maximum wattage an amp can deliver as a brief burst during a musical peak. The RMS rating is more significant. |
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Regulated Power Supply |
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Regulated power supplies help to maintain the output of an amp under verying conditions. Pulse Width Modulation is the tightest form of power regulation among the higher end audio manufacturers. It maintaints a rock-steady output regardless of voltage lapses caused by other electrical demands placed on your car`s battery. |
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Bridged Power |
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In mono mode , you "BRIDGE" (combine) the stereo output to power a single speaker. Bridging 2 channels into 1 is perfect for driving single or multiple subwoofers. |
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Discrete Output Devices |
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Amps with discrete output devices use seperate transistors instead of integrated circuits on each output. They can pass more current and consequently play louder and cleaner. They are a must for driving subwoofers. |
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2-Ohm Stable |
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These amps are "STABLE" and run cool when driving a 2 ohm load. These amps allow you to wire 2 4 ohm speakers in parallel without stressing the amp. |
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Tri-Way Output vs 3-Channel Output |
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Tri-Way mode powers a pair of stereo speakers and a subwoofer simultaneously with a single 2-channel amp. It is an affordable way to drive a subwoofer and requires an external Tri-Way crossover that is connected in line between your amplifier and your speakers. |
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Mosfet |
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MOSFET (Metal Oxide Semiconductor File Effect transistors) have a higher switching speed than bipolar transistors and generate very little heat. They offer fast response and are highly efficient. |
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THD or Total Harmonic Distortion |
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Amount of change in harmonic content of the signal as it is amplified. A lower figure indicates a more accurate amp. THD below 0.10% is inaudible. |
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Built in Features to help you get bass as big as you want |
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A powerful amp can be a powerful ally in your quest for BIG BASS. But don`t overlook equally helpful built-in features that will save you some cash and installation time and problems. |
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Options for Multi Amp Systems |
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Many amps include output jacks with built in high and/or low pass crossovers that let you "daisy chain" several amps together. Choosing an amp with these features built-in, means you can run a multi-amp system without spending money on a seperate electronic crossover. |
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Where and how to Mount an Amp |
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Most installers like to mount amps so they aren`t visible from the outside of the vehicle, but you will have to decide what is best for your application. Amps mounted under seats require shorter power and RCA cables & are generally closer to the rear deck speakers or subwoofer boxes |