Greater power for any car audio system

Vendu à partir de 2010 actuellement

Produit prédécesseur: GRAND TOURING GTO 1004
Fait en: China

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Caractéristiques du produit

MS Series
Input Sensitivity
Remote Bass-Level Control Included
Not Included
1-Ohm Power Output
400-watt, four-channel amplifier, dual speaker outputs
Signal-to-Noise Ratio
80dB referenced to 1 watt, 90dB referenced to rated rated power
Frequency Response
(3dB) 10Hz-27kHz
4-Ohm Power Output
Proprietary DSP technology
2-Ohm Power Output
Connects to any analog signal
Width (mm)
Weight (lb)
Height (in)
Width (in)
Depth (in)
Weight (kg)
Depth (mm)
Height (mm)

Harness the DSP control and Class D power

The JBL® MS-A1004 is a compact, four-channel digital amplifier that adds up to 400 watts of raw power to your car audio system – and reinvents the sound. It connects to any analogue line-level or speaker-level output with a simple selector switch. A digital mixer lets you map inputs to any speaker output. Two onboard displays and rotary encoder controls make for easy installation and configuration. MS-A1004 includes sophisticated DSP crossover network circuitry that gives you precise control of the band filters, crossover points and crossover slopes of each channel pair. Suddenly, your car has loud, legendary JBL® sound ? and your favourite songs sound new again.

The MS-A1004 is an efficient, full-range, premium Class D car audio amplifier. Since the MS-A1004 offers a frequency response of 10Hz – 27kHz (–3 decibels), it doesn’t compromise on audio quality. Its Class D topology means lower current draw and operating temperatures, which translate into greater efficiency in delivering high-quality sound.
The MS-A1004 is a four-channel amplifier that can easily bridge channel pairs to deliver 2 x 200 watts into 2 ohms, which allows flexible configuration of one or more subwoofers, including a dual voice-coil (DVC) subwoofer. You can configure this full-range amplifier as a more powerful two-channel amplifier for premium front-component speakers or those in dedicated bandwidths such as midbass, midrange or high frequencies.
The MS-A1004 leverages the power of digital signal processing (DSP) with its unique input mixer. All output-level settings, channel assignments and active crossover functions are handled through this powerful DSP engine to highly accurate tolerances. Should power be disconnected or lost, the unit will retain all of your settings in a non-volatile memory. And DSP technology, found in many high-end signal processors, is built right in.
The MS-A1004 provides top-panel control via a combination LED display and rotary-encoder control with just two navigation buttons. All necessary setup processes are aided with a menu-driven CD that’s included with the unit. Once you set up the unit, you need never worry about the controls being pushed or tweaked, since all settings remain in the unit’s memory even when the power is disconnected.
The MS-A1004’s digital input mixer features 97 individual crossover settings between 20Hz and 20kHz, for either low- or high-pass configuration, to match the needs of speakers and system configuration precisely. In addition, the unit lets you select three different orders of response (roll-off): 6, 12 or 24 decibels/octave.
JBL engineers have built the MS-A1004 for complete compatibility with any OEM (original-equipment manufacturer) audio system. The unit accepts input-signal voltages of up to 20 volts. (Speaker-wire-to-RCA adapters are included.) It can turn on with a wired input ranging from +5 volts DC to the standard +12 volts DC, allowing more flexibility with low-voltage turn-on circuits. If there is no turn-on circuit, programmable signal sensing can turn the unit on whenever an audio signal is present.
Setting and matching the input levels of the MS-A1004 is an easy and precise exercise with the help of the included setup CD. After you connect and configure the inputs, simply feed the amplifier an input signal and raise the signal source level to its maximum (undistorted) output volume. Then adjust the input controls until the checkmark icon is displayed to indicate that the unit has reached its optimum setting.
The MS-A1004 includes a set of pass-through, pre-amp level RCA outputs that are unaffected by the input mixer so that you can add amplifiers without using splitters or Y-adapters. It’s an efficient way to provide system expansion flexibility without having to run additional cables or make any additional connections.
The MS-A1004 amplifier features robust connection terminals for power, ground, remote turn-on and speakers. The power/ground terminals accept up to 4AWG wire. (We recommend a minimum of 8AWG.) Speaker terminals for each channel pair accept up to 10AWG wire, making it easy to connect to either factory-installed or aftermarket speaker wiring.
The MS-A1004 amplifier has a modest footprint that allows you to install the unit just about anywhere. At 7-3/16 x 8-1/4 inches (183 x 210 millimeters), the mounting area is small enough to work in any vehicle without compromising space. With a height of only 2-3/4 inches (70 millimeters), the amplifier has plenty of clearance to fit under seats, behind panels or in other locations.
The MS-A1004 is compatible with the JBL MS-WBC wireless bass control, which provides shelving bass boost up to 10 decibels at the amplifier without making you connect any additional wires. Its unique shelving-boost functionality lets you add linear boost below 60Hz without affecting its low-pass crossover frequency. You can buy the MS-WBC separately and install it easily in just about any location within reach of the driver.

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