Skip to content
  • Our Stores
  • Contact
  • FAQ
  • Privacy Policy
  • Returns
  • Newsletter

    Sign up for Newsletter

    Signup for our newsletter to get notified about sales and new products. Add any text here or remove it.

    Nix WarehouseNix Warehouse
    • SHOP
      • Shop by Categories
      • Shop By Brands
      • Sales
    • Used Parts
    • Login
    • Cart / $1,819.84 3
        • × Perko 2" IPS Intake Strainer Bronze Made in the USAPerko 2" IPS Intake Strainer Bronze Made in the USA
          1 × $1,422.86
        • × Fusion MS-RA70NSX Stereo w/BT/AM/FM/SiriusXM - 2 ZoneFusion MS-RA70NSX Stereo w/BT/AM/FM/SiriusXM - 2 Zone
          1 × $319.99
        • × Lowrance N2KEXT-25RD 25' Extension Cable - Red NMEALowrance N2KEXT-25RD 25' Extension Cable - Red NMEA
          1 × $76.99

        Subtotal: $1,819.84

        View cartCheckout

    • 3
      Cart
      • × Perko 2" IPS Intake Strainer Bronze Made in the USAPerko 2" IPS Intake Strainer Bronze Made in the USA
        1 × $1,422.86
      • × Fusion MS-RA70NSX Stereo w/BT/AM/FM/SiriusXM - 2 ZoneFusion MS-RA70NSX Stereo w/BT/AM/FM/SiriusXM - 2 Zone
        1 × $319.99
      • × Lowrance N2KEXT-25RD 25' Extension Cable - Red NMEALowrance N2KEXT-25RD 25' Extension Cable - Red NMEA
        1 × $76.99

      Subtotal: $1,819.84

      View cartCheckout

    Customer matched zone "USA"
    “Lowrance N2KEXT-25RD 25′ Extension Cable – Red NMEA” has been added to your cart. View cart
    Add to wishlist
    Roswell R1 650.4 4-Channel Marine Amplifier
    Roswell R1 650.4 4-Channel Marine Amplifier - Image 2
    Home / Entertainment > Amplifiers

    Roswell R1 650.4 4-Channel Marine Amplifier

    SKU: 100981 Categories: Entertainment > Amplifiers, Uncategorized
    Roswell Marine
    • Description
    • Brand
    • Accessories
    • Literature
    • Videos

    R1 650.4 4-Channel Marine Amplifier

    The R1 650.4 marine-grade amplifier from Roswell, is everything a boat’s audio system has always wanted. These stackable amplifiers utilize a 4-channel Class-D design that puts out 100 watts RMS per channel at 4Ω and is perfect for powering an R1 6.5″ marine speaker setup.

    Easily bridge and tune with the calibrated crossover controls. Because LEDs create lots of noise issues, this amp features differential RCA inputs for maximum noise rejection. The R1 650.4 is built with fully conformal-coated PCBs and nickel-plated marine-grade wire terminals to ensure their quality.

    Features:

    • Ch 1-4 calibrated crossover (FULL/HPF/LPF)    
    • Space-saving stackable design
    • Bridgeable 4-channel design
    • Marine-grade durability
    • 2 Ohm Stable at 165 watts per channel    
    • High-Efficiency Class-D Topology
    • Conformal-coated PCBs 
    • The lit logo power indicator lets you know your amp is receiving power    
    • Nickel-plated wire terminals
    • Switchable Differential RCA inputs minimize interference and induced noise

    Specifications:

    • Continuous Power (RMS): 4Ω: 100W x 4 / 2Ω: 165W x 4 
    • Bridged: 4Ω: 300W x 2
    • Frequency Response: 10Hz – 25Hz
    • Input Sensitivity: 0.2–10.0V
    • HPF (High Pass Filter): 30Hz – 300Hz
    • LPF (Low Pass Filter): 30Hz – 300Hz
    • Bass EQ: 0-18dB @ 45Hz
    • Subsonic Filter: 10Hz – 55Hz
    • Dimensions: Inches: 1.90 x 7.06 x 11.125 Centimeters: 4.83 x 17.94 x 28.26

    Brand

    Roswell Marine

    Accessories

    • Roswell Marine Amp Wiring Kit
    • Roswell 5M 6-Channel RCA Cable
    • Roswell .5M 2-Channel RCA Cable
    • Roswell 1M 2-Channel RCA Cable
    • Roswell 5M 2-Channel RCA Cable
    • Roswell 1M to 2F Y Adapter
    • Roswell 1F to 2M Y Adapter
    • Roswell R1 Amp Spacers
    • Roswell 1-In 2-Out Ground Distribution Block
    • Roswell 1-In 4-Out Fused Distribution Block
    • Roswell 1-In 4-Out Ground Distribution Block

    No literature available for this product.

    No videos available for this product.

    Related products

    Whale IC Retail Kit 24V Gulper IC Pump & Strainer IC
    Add to wishlist
    Quick View

    Uncategorized

    Whale IC Retail Kit 24V Gulper IC Pump & Strainer IC

    Whale Marine
    $489.99

    IC Retail Kit 24V Gulper IC Pump & Strainer IC At the heart of every Whale IC product lies innovative electronic control circuitry.This enables IC sensor accessories to communicate directly with IC pumps to control their performance. Features & Benefits: Save time and money by reducing four separate components to one pre-wired system. Remote mounting [...]

    Add to cart
    Lowrance N2KEXT-25RD 25' Extension Cable - Red NMEA
    Add to wishlist
    Quick View

    Uncategorized

    Lowrance N2KEXT-25RD 25′ Extension Cable – Red NMEA

    Lowrance
    $76.99

    Lowrance Extension Cable 25′ extension cable. For use with LGC-3000 and red NMEA network.

    Add to cart
    Poly-Planar ME70BT IPX6 4-Channel Marine Amplifier
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Poly-Planar ME70BT IPX6 4-Channel Marine Amplifier

    Poly-Planar
    $270.95

    ME70BT IPX6 4-Channel Marine Amplifier Features:Remote display keypad4×45 Audio power out100 Meter Bluetooth rangePhone/Android chargingUSB music PlayerAUX inputNMEA 2000® certifiedMultiple EQ preset optionsBacklit 3 line display with adjustable illuminationThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

    Add to cart
    Fusion MS-AM504 4-Channel Marine Amplifier - 500W
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Fusion MS-AM504 4-Channel Marine Amplifier – 500W

    Fusion
    $339.99

    MS-AM504 4-Channel Marine Amplifier – 500W  Features: Marine Grade Chassis – Stainless steel end caps and bottom plate provide a stunning finish with added environmental protection. Heat Sink Technology – Heat sink technology transfers heat more efficiently and offers more thermal stability for maximum component reliability. Class-AB Design – The 500 Watt 2-Ohm stable (per [...]

    Add to cart
    Boss Audio Elite 380W 4 Channel Class D Amplifier
    Add to wishlist
    Quick View

    Uncategorized

    Boss Audio Elite 380W 4 Channel Class D Amplifier

    Boss Audio

    Elite 380W 4 Channel Class D Amplifier Boss Audio Systems MPD380.4 4 Channel Marine Amplifier – Class D, 380 High Output, IP66 Rated, 2 Ohm Stable, Low-Level Inputs, High/Low Pass Crossover. Features: 4/3/2 Channel Full-Range, Class D PWM MOSFET Power Supply RCA Level Inputs HP & LP Filters Bass Boost Input Sensitivity Bridgeable LED Illuminated [...]

    Read more
    Poly-Planar ME-6005D 5-Channel Amplifier - 600 Watts
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Poly-Planar ME-6005D 5-Channel Amplifier – 600 Watts

    Poly-Planar
    $399.95

    ME-6005D 5-Channel Amplifier – 600 Watts Features: Waterproof IP5 Pigtail wire harness and connection High-efficient full-range class D operation Selectable high-level and low-level input Signal sensing and 12V remote out short thermal and overload protection DIP switchable crossover Gain control for front and rear channel Switchable mode for 4-channel model: 2CH/4CH Specifications: Number of Channels [...]

    Add to cart
    Poly-Planar ME-52 2 Channel Amplifier - 50 Watts
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Poly-Planar ME-52 2 Channel Amplifier – 50 Watts

    Poly-Planar
    $139.95

    ME-52 2 Channel Amplifier – 50 Watts The ME-52 is a compact 2-channel 50-watt audio amplifier with separate volume control. This unit is designed for adding additional speakers to an existing system or as a separate zone amp. Features:  To add additional loudspeakers to a current audio system To provide amplification for a separate audio [...]

    Add to cart
    Fusion Apollo Marine 4 Channel 1200-Watt Amplifier
    Add to wishlist
    Quick View

    Entertainment > Amplifiers

    Fusion Apollo Marine 4 Channel 1200-Watt Amplifier

    Fusion
    $649.99

    Apollo Marine 4 Channel 1200-Watt Amplifier This 4-channel amplifier with 150-watt RMS per channel can power up to four pairs of speakers or two pairs of speakers and one subwoofer. It includes high-power mode adapters for simple bridging to increase power. Features: Keep the music going for longer without draining your battery as quickly No [...]

    Add to cart
    Latest
    • Placeholder Lumitec Surface Mount Aluminum Navigation Light Port - Red
    • Placeholder Lumitec Surface Mount Aluminum Navigation Light Starboard - Green
    • Placeholder VETUS V-CAN 3-Point Y-Hub
    • Placeholder VETUS Airvent Elbow w/Connect - 38mm
    Best Selling
    • Connect-Ease 24V 6 Gauge Heavy Duty Series System Connect-Ease 24V 6 Gauge Heavy Duty Series System
    • Fusion Apollo MS-RA770 Touchscreen AM/FM/BT/SiriusXM Stereo - 4 Zone w/DSP Fusion Apollo MS-RA770 Touchscreen AM/FM/BT/SiriusXM Stereo - 4 Zone w/DSP $699.99
    • Airmar Garmin 12-Pin Mix & Match Cable f/Chirp Transducers Airmar Garmin 12-Pin Mix & Match Cable f/Chirp Transducers $127.50
    • Airmar TM165HW Chirp High Wide 600W Transom Mount Transducer - Requires Adapter Cable Airmar TM165HW Chirp High Wide 600W Transom Mount Transducer - Requires Adapter Cable $487.50
    Top Rated
    • Blue Sea 7209 AC / DC Single Pole Magnetic World Circuit Breaker  -  15 Amp Blue Sea 7209 AC / DC Single Pole Magnetic World Circuit Breaker - 15 Amp $25.37
    • Sudbury Miracle Coat PTFE Marine Polish - 16oz Liquid Sudbury Miracle Coat PTFE Marine Polish - 16oz Liquid $26.22
    • Raymarine Cyclone 4' Open Array Only Raymarine Cyclone 4' Open Array Only $2,499.99
    Upcoming Events and Sales
    June 2025
    M T W T F S S
     1
    2345678
    9101112131415
    16171819202122
    23242526272829
    30  
    « Mar    
    About us
    Proudly owned and operated by Nix Yacht Services LLC. This website was created to serve as our showroom for all our suppliers and products. Company started as complete yacht management in San Diego, CA. During the years we have been involved in variety of projects. Our goal was aways been bringing quality, transparency and satisfaction.
    Hours & Info
    El Cajon, CA 92020
    +1 (619) 508-3995
    nick@nixwarehouse.com

    Please note that your item may ship from warehouses located in all parts of the country. We make every effort to ship from locations closest to our customers. Items are shipped Monday – Friday excluding holidays. Overnight and two day delivery options are available.
    • Our Stores
    • Contact
    • FAQ
    • Privacy Policy
    • Returns
    Copyright 2025 © Nix Warehouse
    • SHOP
      • Shop by Categories
      • Shop By Brands
      • Sales
    • Used Parts
    • Login
    • Newsletter

    This is a demo store for testing purposes — no orders shall be fulfilled. Dismiss

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.