At this present time our store location is open by appointment only.

70W x 4 @ 4Ω

Amplifiers with a Power Output Rating of 70-Watts x 4-Channels, 4-Ohm Final Impedance

Amplifiers with a Power Output Rating of 70-Watts x 4-Channels, 4-Ohm Final Impedance

RMS power: This rating of any amplifier is the continuous power rating that an amp is designed to output at a maximum continued volume rating. The RMS power specification is one of two numbers to go by when pairing your speakers with an amplifier, not the only 2 but a good starting point. As an example, a speaker driver with a 70-Watt, or 70W for short, RMS rating should be paired with a seventy-watt RMS amplifier. We usually recommend an amp to be over powered by 10% RMS so that the power-plant does not have to work at 100% capacity to get 100-percent efficiency from your speakers. This will keep your amplifier from overheating during long periods of continuous operation.

Ohms: Is the resistance rating of an amp and is the second most important when pairing drivers with amplifiers. A power-plant that is 70W @ 4-ohm might put out 140-Watts @ 2Ω. When purchasing an amplifier, the correct pairing of a speaker’s RMS wattage and Ohm ratings with an amp’s output power rating is absolutely essential.

1 product

  • JL Audio RD900/5 : 5ch Amplifier, 70W x 4ch + 500W Mono @ 2Ω JL Audio RD900/5 : 5ch Amplifier, top side.

    JL Audio RD900/5 : 5ch Amplifier, 70W x 4ch + 500W Mono @ 2Ω

    Pre-Order Today!

    RD-Series 5-Channel Automotive Amplifier, 70-Watts x 4ch + 500-Watt Mono @ 2-Ohm Crafted as an all-in-one, total system solution, the RD900/5 is engineered to power a complete audio system consisting of a subwoofer + four satellite system with 900 watts of high-performance sound. Equipped with JL's exclusive NexD™ switching technology, this complete power package efficiently generates a potent 70 watts of crystal-clear audio into 4 ohms, plus a robust 500 watts for a subwoofer system, all from a single compact chassis. Each pair of main channels is also fully bridgeable, stoutly producing 200 watts of full-range audio bliss (into 4 ohms), creating an ultra-powerful 3-channel amplifier. Conveniently located on top of the RD900/5, you’ll find a complement of studio-grade signal processing features, all hidden beneath a removable protective cover. Each pair of main channels is equipped with a 12 dB / octave high-pass filter, with a dedicated low-pass filter for its subwoofer channel. All three crossovers offer continuously variable frequency selection from 50-500 Hz, for precise filtering. Dual-range, differential-balanced inputs are also onboard, capable of accepting most input voltage levels, plus automatic turn-on capability (via signal sensing or DC-offset sensing) for maximum versatility. LED clipping indicators are also standard equipment for each channel section. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. The RD900/5 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition. With the addition of an RBC-1 remote level control (sold separately), you can conveniently control the subwoofer’s output remotely from the driver’s seat. Specifications Frequency Response (Main Channels) 12 Hz - 22 kHz (+0, -1dB) Frequency Response (Subwoofer Channel) 10 Hz - 500 Hz (+0, -1dB) S/N Ratio, referred to highest rated power (Main Channels) >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power (Main Channels) <1% @ 2 Ω per Ch. THD+N @ Rated Power (Subwoofer Channels) <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 4 AWG wire Fuse Rating 80 A (AFS, AGU or MaxiFuse™) Main Channels @ 4 Ω 70 W RMS x 4 Main Channels @ 2 Ω 100 W RMS x 4 Main Channels - Bridged @ 4Ω 200 W RMS x 2 Subwoofer Channel @ 4 Ω 225 W RMS x 1 Subwoofer Channel @ 3 Ω 325 W RMS x 1 Subwoofer Channel @ 2 Ω 500 W RMS x 1 Subwoofer Channel @ 1.5 Ω N/A JL Audio RD900/5 Manual

    Pre-Order Today!

    $699.99

Login

Forgot your password?

Don't have an account yet?
Create account