Hertz ML700-3 3" Midrange Speaker Pair

The Hertz ML 700.3 Legend is a 3-inch car-audio midrange speaker designed to reproduce the critical vocal and mid-to-high-frequency range in a high-performance component system. This listing is for a pair of ML700-3 speakers in used, very good condition. It is a dedicated midrange driver, not a full-range coaxial speaker or a tweeter.

Its 200 Hz to 20 kHz frequency response supports detailed vocals, instruments, and upper-frequency information when paired with appropriate lower-frequency drivers and system filtering. The 4-ohm design is intended for car-audio amplification and component-system integration. Hertz rates the driver for 100 watts peak power when high-pass filtered at 250 Hz with a 12 dB-per-octave slope.

The ML 700.3 uses Hertz V-cone geometry and a pressed-pulp cone reinforced with cotton fibres. This lightweight cone construction is paired with a single-layer CCAW voice coil to help control moving mass. The design is intended to provide broad mid-high dispersion and extended upper-frequency response from a compact driver.

A neodymium motor assembly and copper cylinder around the central pole piece support the driver’s compact form and inductance control. The three-spoke aluminium-alloy basket is designed to be acoustically open and includes vented sections. Boundary Free Surround technology increases the effective radiating diameter to 65 mm.

This driver is suited to custom multi-way front-stage systems, especially installations using DSP, active crossovers, or compatible passive networks. Hertz identifies it as a suitable partner for the ML 1800.3 Legend woofer, and also notes its use in two-way systems with the ML 1650.3 or ML 1800.3. Proper crossover selection, amplifier matching, and mounting space are important for a successful installation.

Key Features

• 3-Inch Midrange Driver: Handles focused midrange and upper-frequency reproduction in a component system.
• 4-Ohm Impedance: Matches common car-audio amplifier and crossover configurations.
• V-Cone Geometry: Supports wide dispersion through the mid-high frequency range.
• Neodymium Motor: Provides a compact magnetic assembly for the driver.
• Pressed-Pulp Cotton-Fibre Cone: Balances stiffness and low moving mass.
• Aluminium-Alloy Basket: Uses a three-spoke, vented, anti-resonant design.

Design & Installation

The ML 700.3 combines a pressed-pulp cone with cotton fibres, Boundary Free Surround, a neodymium magnet, and a three-spoke aluminium-alloy basket. Its 20 mm voice coil uses single-layer CCAW construction, while a copper cylinder around the central pole piece is used to help linearize inductance modulation. The compact driver measures 87.8 mm across its main outer diameter and has a 41.3 mm mounting depth.

Confirm the 74 mm cutout requirement and available mounting depth before installation. Use this speaker as part of a properly filtered component system; Hertz specifies its 100 W peak rating with a 250 Hz, 12 dB-per-octave high-pass filter. Pair it with suitable low-frequency drivers, an amplifier appropriate for a 4-ohm load, and either active DSP crossover settings or a compatible passive crossover network.