JL Audio RD400/4
4-channel amplifier
still
/piece
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Description
The RD400/4 is a top seller among JL Audio's 4-channel amplifiers. Praised for its high audio output power and incredibly high efficiency, this amplifier has made it to a top class rating and a score of 1.4 in Car & Hifi's test thanks to its exclusive NexD™ high-speed switching technologies. It not only offers low distortion and an ultra-compact design, but also a durable black powder-coated finish and many other features that ensure your music is reproduced in the best quality.
Features
- 4-channel full-range amplifier Class D, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V
- Utilizing JL's exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver high audio output power with incredible efficiency and low distortion.
- The controls of the RD400/4 are located on the top of the amplifier under a protective cover, with all connections on one side of the housing.
- Studio-quality signal processing features include high or low pass filters with 12 dB/octave (can be switched off) for each channel pair with stepless frequency selection from 50 to 500 Hz and differentially balanced
- An automatic power-on function (via signal sampling or DC offset sampling) comes as standard, along with all-new input switches for bridging stereo output channels without the need to use Y adapters.
- The RD400/4 also comes with integrated LED clipping indicators. This completely new, innovative feature allows you to quickly and precisely adjust the amplifier's input sensitivity settings without the need for special equipment.
- There is also a range of preamplifier outputs so that the signals can easily be passed on to another amplifier.
- The RD400/4 has a durable, black powder-coated finish and a top-mounted, two-color LED light strip that indicates the overall status and condition.
Rated continuous power (RMS) at 14.4 V
- @ 4 Ω : 75 W RMS x 4
- @ 2 Ω : 100 W RMS x 4
- Bridged @ 4Ω : 200 W RMS x 2
Rated continuous power (RMS) at 12.5 V
- @ 4 Ω : 60 W RMS x 4
- @ 2 Ω : 90 W RMS x 4
- Bridged @ 4Ω : 180 W RMS x 2
General specifications
- Frequency response : 12 Hz - 22 kHz (+0, -1dB)
- S/N ratio, relative to the highest rated power : >104 dB below the rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
- Attenuation factor @ 4 Ω : >150 / 50 Hz
- Attenuation factor @ 2 Ω : >75 / 50 Hz
- THD+N @ Nennleistung : <1% @ 2 Ω pro Ch.
- Input voltage range @ RCA inputs : switchable from 200 mV - 2 V RMS (low) to 800 mV - 8 V RMS (high)
- Minimum cable diameter : 25mm²
Fuse rating : 40 A (AFS, AGU or MaxiFuse™)
Signal processing
- Filter mode : Low-pass or high-pass
- Filter slope : 12 dB/octave
- Filter frequency range : 50 Hz - 500 Hz
- Filter defeat function : Yes
- Remote control : No
- Channel input mode switch : Yes (2/4 channel)
- Pass-through preamplifier output : buffered
- Selection of the source channel for PreOuts : No
Dimensions
- Height (H): 54 mm (2.13 inches)
- Width (W): 248 mm (9.78 inches)
- Depth (D) : 6.96 inch / 177 mm
