New, Damaged Packaging - JL Audio RD400/4 Class D RD Series 4 Channel Car Amplifier

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JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 1 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 2 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 3 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 4 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 5 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 6 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 7 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 8 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) Image 9 — JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

Product highlights

• 75 watts RMS x 4 @ 4 ohm
• 100 watts RMS x 4 @ 2 ohm
• Total Peak Power: 800 watts
• Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
• Heavy duty aluminum alloy heat-sink
• 7"W x 9-3/16"L x 2-1/8"H

Learn more about the rd4004_ob

Description

Authorized dealer

Item Condition - New, Damaged Packaging:

The product is brand new with only the packaging not being in perfect condition. This occurs sometimes because our warehouse teared the box or it was slightly damaged during shipment to our warehouse.

General Features:

JL Audio RD-Series RD400/4
Class-D 4-Channel Amplifier
RMS Power Rating:

4 ohm: 75 watts x 4 chan.
2 ohm: 100 watts x 4 chan.
1 ohm: ------------N/A------------
Bridged, 4 ohm: 200 watts x 2 chan

Total power output: 800 watts
NexD™ Technology delivers outstanding sound quality, efficiency and reliability
LED clipping indicators
Pulse Width Modulated MOSFET power supply
LED power (green) and protect (red) indicators
Soft start turn-on
DC Offset-Sensing and Signal-Sensing (auto-on)

Designed for high-level (speaker level) signals, not for lowlevel (preamp level) signals.
The circuit senses the input signal from CH. 1 only.

Mono channel operation
Speaker-level (high-level) inputs

Speaker Wire to RCA Cable Required, Sold Separately: JL Audio XD-CLRAIC2-SW

Bridging switch for each channel pair
Preamp RCA outputs to daisy chain multiple amps
3-way protection circuitry (thermal, overload, and speaker short protection)
Dual speaker terminals simplify the hookup of multiple speakers
Heavy duty aluminum alloy heat-sink for extreme heat dissipation
Input sensitivity:

Low level: 200mV - 2V
High level: 800mV - 8V

Frequency Response: 12 - 22,000Hz
Total Harmonic Distortion (THD): <1%
Variable low-pass filter: 50 - 500 Hz, 12 dB/octave
Variable high-pass filter: 50 - 500 Hz, 12 dB/octave
Low-Pass Slope (dB/octave): 12 dB/octave
Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
Fuse Rating: 40 A x 1
4-8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
Dimensions: 7"W x 9-3/16"L x 2-1/8"H
Authorized Internet Dealer
1-year Manufacturer's Warranty

Specifications & Details

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

75 watts x 4 channel

RMS Power @ 2 ohms

100 watts x 4 channel

Bridged RMS Power

200 watts x 2 channel

Amplifier Specifications

Series

RD Series

Amplifier Class

Number of Channels

4-Channel

Total Peak Power Output

800 watts

Total RMS Power Output

400 watts

Maximum Input Gauge Size

4 AWG

Minimum Impedance Unbridged

2 ohm

Minimum Impedance Bridged

4 ohms

THD at Rated RMS Power

<1%

Speaker Level Inputs

Preamp Outputs

1 pair

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)

High-Pass Crossover Frequency

50 - 500 Hz

Low-Pass Crossover Frequency

50 - 500 Hz

Signal-to-Noise Ratio

84 dB

Channel Separation

12 dB

Bass Boost

0 - 12 dB

Remote bass/level controller

Optional (Accessory required and sold separately)

JL Audio RBC-1

Fuse Rating

40A x 1

Total Fuse Rating

Strappable

Sonic Certified Amplifier

Not Tested

Amp Bluetooth Connectivity

Hi-Res Certified

What is in the box?

Paperwork

User manual

WITB: Amplifiers

Amplifier
Adhesive brand badge
Allen wrench

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+) thumbnail image

Overall rating distribution

5 star		97%
4 star		3%
3 star		0%
2 star		0%
1 star		0%

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		4.9
Value		4.9
Features		5
Design		5
Usability		5

Customer Photos & Videos

Customer Reviews

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Great Deal on a great product

The following review is for RD400/4, which is a part of the bundle you are viewing.

I could not be happier with this amp. True quality from top to bottom. The sound is fantastic. I used this as a full range four channel amp to drive four kicker speakers. It gets its signal from the factory Nissan HU which is a very low quality HU in my opinion. I decided to try to keep the factory HU due to the factory steering wheel controls, bluetooth and stock look for theft deterrent appearance. I found the front channels on the HU clipped out way early compared to the rear when setting up the amp. So i switched the amp to 2 channel input / four channel output the set it up with the clip lights ....and perfection! What a great feature. I am very happy.

By Gerry on March 16, 2017 Checkmark Icon

Verified purchase

49 found this helpful

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Great Product

The following review is for RD400/4, which is a part of the bundle you are viewing.

Pros: Easy to install, all the needed features, underrated.

Cons:None.

By Dustin on February 8, 2018 Checkmark Icon

Verified purchase

46 found this helpful

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Amp

The following review is for RD400/4, which is a part of the bundle you are viewing.

Very pleased so far.. sounds just as my amp that I replaced.. easily installed, with a very small space required for installation... don't know about durability yet.. but we will see.. for the $$ and power/size ratio I would recommend this amp to anybody.. JL makes some of the best

By Marc on September 24, 2017

42 found this helpful

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Nice

The following review is for RD400/4, which is a part of the bundle you are viewing.

Very good sound quality amp and small enough to put under the seats

By Anonymous on March 30, 2019 Checkmark Icon

Verified purchase

42 found this helpful

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JL Audio Class-D 4-Channel RD400/4

The following review is for RD400/4, which is a part of the bundle you are viewing.

Great prices on great equipment and Fast delivery thanx sonic

By Anonymous on March 6, 2019 Checkmark Icon

Verified purchase

41 found this helpful

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Excellent app at a great price. Fast delivery also!

The following review is for RD400/4, which is a part of the bundle you are viewing.

I needed the amp I bought quickly and Sonic Electronix was the only company that had it in stock and at the right price.

Great amp, shipped fast. 100% satisfied.

By David on August 7, 2020 Checkmark Icon

Verified purchase

40 found this helpful

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JL Audio Class-D 4-Channel RD400/4

The following review is for RD400/4, which is a part of the bundle you are viewing.

I would recommend this amp it sounds so clean!!!! I have it running 4 6.5 Phoenix gold coaxal speakers I have had this amp for 6 months and works perfectly.

By Anonymous on December 14, 2018

40 found this helpful

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Excellent price Great power

The following review is for RD400/4, which is a part of the bundle you are viewing.

This amp was a great price and I love the convenience in size. I replaced my factory amp and the Boston acoustic speakers now sound like high-end audio. Very easy to install and with the new clipping feature I have no issues. Will be buying another soon.

By Christopher on March 19, 2020 Checkmark Icon

Verified purchase

39 found this helpful

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Open box saved me $70

The following review is for RD400/4, which is a part of the bundle you are viewing.

JL lives up to their reputation again. Replaced my kicker 4 channel with this amp. A smaller footprint operates at a cooler temperature, and all of the wirings is on one side for cleaner wire installation.

By Christopher on January 24, 2021 Checkmark Icon

Verified purchase

34 found this helpful

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Sounds good for the money

The following review is for RD400/4, which is a part of the bundle you are viewing.

Using this in conjunction with an RD1500 in a regular cab Silverado. Not yet installed but it is running on my test bench on a set of Kicker's bookshelf demo speakers. Good, clean sound and plenty of power while running in 2 channel mode.

Shipping and customer service experience was not what I expected; both were slower than promised. Product is great.

By Ryan on November 24, 2021 Checkmark Icon

Verified purchase

33 found this helpful

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See all 30 reviews

Add-ons

Belva BAK44

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

(61)

$49.99

List price $79.99

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JL Audio Class-D 4-Channel RD400/4 - New (Damaged Packaging, Product A+)

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