JBL R4500 Wake Series marine digital media receiver (does not play CDs)

The JBL R4500 is the premium 4-inch single-DIN digital media marine receiver from the JBL Wake Series. Serving as a significant upgrade to the entry-level R3500, the R4500 is engineered for boaters seeking enhanced multi-zone audio control and deep integration with onboard marine electronics. The defining upgrades on the R4500 include a vibrant 4-inch full-color TFT-LCD display capable of showing smartphone album art and ID3 metadata via Bluetooth. It also features built-in NMEA 2000 compatibility, allowing you to link the radio into your boat's backbone network and control music playback directly from a multi-function chartplotter or fishfinder screen. The front panel is built to withstand extreme elements, carrying an IPX7 waterproof rating to protect against direct water exposure and heavy UV exposure. ⚙️ Technical Description The circuit design retains high speaker-driving capacity while expanding line-level preamp matrix channels to isolate distinct listening zones across a vessel. 1. Audio Output & Zone Architecture High-Power Built-in Amplifier: Delivers 20 Watts RMS x 4 Channels (55 Watts Peak x 4 Channels). 2-Ohm Operational Stability: High-current output transistors run stably at 2 ohms, allowing you to parallel-wire up to 8 total 4-ohm speakers directly to the speaker leads without needing an external amplifier. 3-Zone Preamp Layout: Offers a robust 9-channel preamp output array. It provides 3 independent sets of line-level differentials (Left, Right, and Subwoofer for each zone), allowing you to independently control volume levels for the cabin, tower speakers, and subwoofers via its rotary encoder. Acoustic Adjustments: Built-in 3-band parametric equalizer replacing simpler fixed curves for customized speaker tuning. 2. Signal Inputs & Connectivity Bluetooth 5.0 Audio Streaming: Long-range wireless connectivity up to 100 feet away with ultra-fast data transfer rates. Fully Apple MFi certified to support direct iOS and Android control. NMEA 2000 Interface: Features a dedicated rear NMEA 2000 Micro-C terminal pinout to interface with master marine bus systems. Media Inputs: Rear-mounted water-sealed USB Type-A port (supports MP3/WMA playback and charging) and a pair of auxiliary RCA inputs. Radio Tuner: Integrated AM/FM tuner alongside a dedicated NOAA Weather Band (WB) receiver. 3. Operating Parameters & Cutout Dimensions Physical Metric Technical Specification Waterproofing Shield IPX7 Face Panel (watertight) Chassis Mounting Depth 5.25" Clearance Required Mounting Cutout Format Single-DIN standard dashboard slot Cutout Dimensions (W x H) 5.075" Width x 1.905" Height Onboard System Fuse Protection 15A Automotive Blade Wired Remote Interface Compatible with Milennia or Infinity marine remotes