JVC

JVC KS-DR1004D Marine Amplifier & Rockville RWB90W Speakers

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Elevate Your Audio Experience on the WaterThe JVC KS-DR1004D 4-Channel Marine Amplifier is designed to deliver powerful audio performance in marine and off-road environments. This 400-watt amplifier is bundled with a pair of Rockville RWB90W 8" White 2-Way Marine Wakeboard Tower Speakers, offerin...

$399.89*
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*Price sourced from Amazon.com. Last updated:Jul 21, 2026.Price and availability are subject to change.

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Overview

Elevate Your Audio Experience on the Water

The JVC KS-DR1004D 4-Channel Marine Amplifier is designed to deliver powerful audio performance in marine and off-road environments. This 400-watt amplifier is bundled with a pair of Rockville RWB90W 8" White 2-Way Marine Wakeboard Tower Speakers, offering a complete audio solution for Polaris RZR/ATV/UTV/Cart. These speakers are fully marinized against salt and fresh water conditions, ensuring durability and long-lasting performance.

  • Amplifier: JVC KS-DR1004D 4-Channel Marine Amplifier
  • Power: 400 Watts
  • Speakers: Pair Rockville RWB90W 8" White 2-Way Marine Wakeboard Tower Speakers
  • Power Handling (Speakers): 600 Watts (300 Watts per Speaker)
  • Frequency Response (Speakers): 60 – 20,000 Hz
  • Water Resistance: Fully Marinized
  • Mounting: Adjustable Nylon Mounting Bracket with Stainless Steel Hardware

Key Features

Package Includes: (1) JVC KS-DR1004D 400 Watt 4-Channel Marine Amplifier For Polaris RZR/ATV/UTV/Cart. (2) Pair Rockville RWB90W White 8" 300w Marine Wakeboard 360° Swivel Tower Speakers. Amplifier. Maximum Power Output 400W. RMS Power Output (4 ohm) [ 1% THD 14.4V] 45W x 4 (20 - 20,000Hz). RMS Power Output (2 ohm) [ 1% THD 14.4V] 45W x 4 (1,000Hz). RMS Power Output (Bridged 4 ohm) [ 1% THD 14.4V] 90W x 2 (1,000Hz). Class Class-D

Signal-to-Noise Ratio (reference: 1W into 4 ohms), CEA-2006 Compliant > 82dB. Load Impedance. Load Impedance Allowance 2 - 8 ohms. HPF 50Hz - 200Hz (-12dB/oct). LPF 50Hz - 200Hz (-12dB/oct). RCA Input Ach L/R, Bch L/R. High Level Input (Speaker Level Input) Yes. High Level Input Auto Power Control (Signal Sensing Turn On) Yes. Input Sensitivity 0.2 - 5V. Dimensions (W x H x D) 145 x 45 x 99 mm (5-11/16" x 1-3/4" x 3-7/8"). Weight 0.7kg (1.5lbs).

No exaggerated power ratings : These speakers are rated with true world RMS ratings. No bootleg or exaggerated power ratings like other brands. These speakers are 200 watts RMS and 300 watts peak. (200 watts RMS is equal to about 500 watts rated by other brands)

Marine grade components and materials: these speakers are truly marine grade. They will not get damaged by water, salt water, or moisture. In addition the terminals (which are normally the first part of a marine speakers that gets damaged by water are made out of stainless steel and they are completely rustproof. There is also an additional waterproof coating cut completely protect the speakers.

These can withstand all elements on the water for a lifetime of worry free use. The mounting screws are longer than other versions we carry to accommodate thicker mounting bars. In addition to wakeboard tower's on boats, we tested these to be perfect for installing in Jeep Cherokee vehicles and even ATV's.

Specifications

Brand
JVC
Model
KS-DR1004D Amplifier
Amplifier Type
Class-D
Maximum Power Output
400W
RMS Power Output (4 ohm)
45W x 4 (20 - 20,000Hz)
RMS Power Output (2 ohm)
45W x 4 (1,000Hz)
RMS Power Output (Bridged 4 ohm)
90W x 2 (1,000Hz)
Signal-to-Noise Ratio (CEA-2006 Compliant)
> 82dB
Load Impedance Allowance
2 - 8 ohms
High-Pass Filter (HPF)
50Hz - 200Hz (-12dB/oct)
Low-Pass Filter (LPF)
50Hz - 200Hz (-12dB/oct)
Input Sensitivity
0.2 - 5V
RCA Input
Ach L/R, Bch L/R
High Level Input
Yes
High Level Input Auto Power Control
Yes (Signal Sensing Turn On)
Amplifier Dimensions (W x H x D)
145 x 45 x 99 mm (5-11/16" x 1-3/4" x 3-7/8")
Amplifier Weight
0.7kg (1.5lbs)
Included Speakers
2 Pair Rockville RWB90W White 8" Marine Wakeboard 360° Swivel Tower Speakers
Speaker Power Handling (RMS)
200 watts
Speaker Power Handling (Peak)
300 watts
Speaker Features
Marine grade components, Stainless steel rustproof terminals, Waterproof coating, Longer mounting screws, 360° Swivel

Frequently Asked Questions

This package includes a JVC KS-DR1004D 4-Channel Marine Amplifier and two Rockville RWB90W White 8" Marine Wakeboard 360° Swivel Tower Speakers.
The amplifier has a maximum power output of 400W and delivers 45W x 4 RMS into 4 ohms (20-20,000Hz) or 90W x 2 bridged into 4 ohms.
Yes, these speakers are built with marine-grade components and materials, designed to withstand water, saltwater, and moisture without damage, including rustproof stainless steel terminals.
In addition to wakeboard towers on boats, these speakers have been tested and found suitable for installation in Jeep Cherokee vehicles and ATVs.
The speakers are rated for 200 watts RMS and 300 watts peak, providing true world RMS ratings for reliable performance.
The amplifier measures 145 x 45 x 99 mm (5-11/16" x 1-3/4" x 3-7/8") and weighs 0.7kg (1.5lbs), making it compact and relatively lightweight for installation.