Hertz HMR 18 Marine Source Unit IP66 Bluetooth 5.0 Dual Zone

Hertz HMR 18 Marine Source Unit IP66 Front Panel Protection Bluetooth 5.0 Dual Zone with Independent Subwoofer Output Per Zone 6-Channel Pre-Out AM/FM Tuner USB 4 x 50W Peak HMC U1 Remote Compatible

The Hertz HMR 18 is a marine source unit with IP66-rated front panel protection, Bluetooth 5.0 audio streaming, and two independent audio zones each with a dedicated subwoofer output. It delivers 4 x 50W peak power with a 6-channel pre-out configuration: two stereo line outputs (one per zone) and one stereo subwoofer RCA output. AM/FM tuner and USB input are included. Compliant with ASTM-D4329 UV resistance and ASTM-B117 salt fog standards.

Product overview

The HMR 18 is built for marine environments, combining front panel IP66 protection with UV resistance and salt fog durability standards to handle the demands of on-water use across seasons. Two independent audio zones give the operator control over separate areas of the vessel, with each zone carrying its own dedicated subwoofer output for independent bass management. Bluetooth 5.0 handles wireless music streaming from smartphones and compatible devices. The 2.8-inch DOT matrix display provides clear readout in outdoor conditions, and the HMC U1 wired remote controller is supported with up to three units connectable simultaneously. AM/FM reception covers both EU and US tuner bands.

Features and benefits

IP66 front panel protection: Resists water ingress from any direction, compliant with ASTM-D4329 UV and ASTM-B117 salt fog standards for sustained marine use.

Dual independent audio zones: Two zones each with their own stereo line output allow separate volume and source control across different areas of the vessel.

Dedicated subwoofer output per zone: One stereo subwoofer RCA output with selectable low-pass filter crossover points of 80Hz, 120Hz, and 160Hz for independent bass management.

Bluetooth 5.0 audio streaming: Wireless music playback from smartphones and compatible devices.

6-channel pre-out: Two stereo line outputs (one per zone) plus one stereo subwoofer output, giving six individual pre-out channels for flexible amplifier connection.

AM/FM tuner: Covers both EU and US tuner band ranges.

USB input (1A): Supports USB audio playback and device charging.

2.8-inch DOT matrix display: Clear readout for source, volume, and zone information.

HMC U1 remote controller compatible: Supports up to three HMC U1 wired remote units simultaneously.

Bass and treble equaliser with three EQ presets.

Technical specs

Frequently asked questions

What does the dual zone feature allow on the HMR 18? Dual zone gives the operator independent audio control over two separate areas of the vessel. Each zone has its own stereo line output, allowing different sources or volume levels to play in different parts of the boat at the same time.

Does each zone have its own subwoofer output? There is one stereo subwoofer RCA output shared across both zones, with a selectable low-pass filter at 80Hz, 120Hz, or 160Hz. Contact us for clarification on how the subwoofer output is assigned between zones in a specific setup.

What IP rating does the HMR 18 have and what does it cover? The front panel carries an IP66 rating, which means it is protected against powerful water jets from any direction. The unit is also tested to ASTM-D4329 UV resistance and ASTM-B117 salt fog standards for extended marine use.

How many remote controllers can be connected to the HMR 18? Up to three HMC U1 wired remote controllers can be connected to the HMR 18 simultaneously.

What pre-out outputs does the HMR 18 have? The HMR 18 provides two stereo line RCA outputs (one per zone) and one stereo subwoofer RCA output, giving six individual pre-out channels in total for connection to external amplifiers.