Hertz SV165-1 6.5" SPL Midrange Speaker Pair

The Hertz SV 165.1 is a 6.5-inch, 4-ohm SPL midrange speaker designed for high-output car audio systems. Sold as a pair in this configuration, it is intended to reproduce the midrange frequencies that carry vocals, guitars, horns, and much of the impact in an amplified system. Its 100 Hz to 10 kHz frequency response makes it a focused midrange driver rather than a full-range replacement speaker.

This speaker is suited to listeners building an SPL-oriented front stage, door array, custom panel, or show-style system. Its 97 dB sensitivity helps it produce substantial output from available amplifier power. A proper high-pass crossover is important because the driver is intended to be protected from deep bass frequencies.

The SV 165.1 uses an ultra-light, water-repellent pressed-paper cone with a paper dust cap. This cone construction is paired with a damped, double-wave fabric surround intended to support controlled movement at high output levels. The result is a direct, efficient midrange presentation built for systems where output and projection are priorities.

Hertz equips the SV 165.1 with a 38 mm copper voice coil wound on a two-layer KSV former. The motor assembly uses a high-density-flux ferrite magnet and high-magnetic-permeability plates for stable magnetic flux. Tin-plated, high-current terminals support secure connection in amplified installations.

For best results, use the SV 165.1 with a compatible external amplifier, active DSP crossover, or passive high-pass network. Its 4-ohm nominal impedance works with common car-audio amplifier channels, while the compact 6.5-inch format can suit many custom door, kick-panel, and baffle installations. Pair it with dedicated tweeters for upper-frequency coverage and a subwoofer or mid-bass driver for low-frequency support when building a wider-band system.

Key Features

• 6.5-Inch SPL Midrange: Focuses on high-output midrange reproduction in custom car-audio systems.
• 400-Watt Peak Handling: Supports demanding amplified applications when properly filtered.
• 97 dB Sensitivity: Helps achieve strong output with available amplifier power.
• 38 mm Copper Voice Coil: Uses a two-layer KSV former for thermal and mechanical capability.
• Pressed-Paper Cone: Water-repellent, ultra-light cone supports responsive midrange performance.
• Ferrite Motor Assembly: High-density-flux ferrite magnet supports efficient driver operation.

Design & Installation

The SV 165.1 combines a solid steel-frame speaker structure with a high-density-flux ferrite magnet, ultra-light pressed-paper cone, paper dust cap, and damped fabric surround. Its 38 mm copper voice coil is wound on a KSV former, while tin-plated terminals are designed for high-current speaker connections. Each speaker weighs 1.85 kg (4 lb), reflecting its substantial motor assembly.

Plan for a 145 mm mounting cutout and 66 mm mounting depth, while allowing 74 mm of overall depth behind the mounting surface. Use a high-pass crossover at 200 Hz with a 12 dB/octave slope as specified for continuous-power use, and connect each driver to an amplifier channel compatible with a 4-ohm load. A crossover is required for proper use and is not included; grilles are also not included.