| JL Amps
Actually you can't wire a JL amp to 1 ohm, it will go into fault mode. JL amps are made to put out full power, in this case (75x4 or 150x2) @4, 3, or 2 ohms. This amplifer is used to power interoir speakers.
From JL's web site:
R.I.P.S. System™
R.I.P.S. stands for "Regulated, Intelligent Power Supply" and is a central feature of JL Audio's “Slash” series amplifiers. The remarkable R.I.P.S. System™ ensures consistent power delivery over a wide range of battery voltages and load impedances.
"Regulated" means that the power supply adjusts its operation so as to maintain the amplifier's rated power output over a wide range of vehicle voltages (11V-14.5 V). Conventional, unregulated power supplies result in significant power losses as battery voltage decreases. With a JL Audio “Slash” series amplifier, the power output remains consistent in real-world systems, resulting in superior fidelity and stability.
The "Intelligent" portion of the R.I.P.S. System is a circuit that actually monitors output current to optimize the amplifier's output power over a wide range of load impedances (1.5 ohm-4 ohm per channel). Conventional amplifiers are designed to produce optimum power at a particular impedance (2 ohm, for example). When asked to run above that impedance (say, 4 ohm), these amplifiers lose power (half their power from 2 ohm to 4 ohm). This will not happen with a JL Audio “Slash” series amplifier because the R.I.P.S. System detects the actual impedance being driven and adjusts output rail voltages to deliver optimum output. The entire process is seamless, automatic, and results in incredible dynamics for satellite channels and consistent power output for a wide range of subwoofer configurations. It also takes into account the real impedance of the system, rather than relying on often inaccurate assumptions based on a speaker's "nominal impedance".
The bottom line of the R.I.P.S. system is: Optimum power, at any impedance between 1.5 ohm and 4 ohm per channel, at any vehicle voltage between 11V and 14.5V.
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