Hertz SV 250.1 10" SPL Midrange Speaker

The Hertz SV 250.1 is a 10-inch, 4-ohm SPL midrange speaker designed for high-output car audio systems. It is sold individually and is intended to reproduce the midrange and upper-midbass range rather than full-range sound on its own. This makes it a practical choice for custom systems that use dedicated tweeters and subwoofers.

With 250 watts continuous power handling and 500 watts peak power handling, the SV 250.1 is suited to amplified installations where output capability and efficiency are priorities. Its 101 dB sensitivity helps it produce substantial sound pressure from available amplifier power. The listed frequency response is 90 Hz to 7 kHz, placing it between subwoofer bass duties and high-frequency tweeter duties.

The speaker uses an ultra-light, water-repellent pressed-paper cone with a paper dust cap. This lightweight diaphragm is paired with a damped fabric surround to support controlled movement under demanding playback conditions. The result is a purpose-built midrange driver for systems tuned for strong vocal, instrument, and midbass presence.

Hertz equips the SV 250.1 with a 2-inch copper voice coil wound on a two-layer KSV former. The motor uses a high-density-flux ferrite magnet and high-magnetic-permeability plates intended to maintain consistent magnetic flux. High-current tin-plated terminals provide the connection point for amplifier wiring.

Use the SV 250.1 as part of an actively filtered or properly crossed-over multi-speaker system. Hertz specifies best SPL performance with a 150 Hz high-pass filter at 12 dB per octave. Its 10-inch format can work in custom doors, kick panels, rear decks, or fabricated baffles when mounting clearance and vehicle structure allow.

Key Features

• 10-Inch SPL Midrange: Provides dedicated midrange output for custom high-output systems.
• 250W Continuous Handling: Supports use with a properly matched external amplifier.
• 4-Ohm Impedance: Works with amplifiers designed for 4-ohm speaker loads.
• Pressed-Paper Cone: Lightweight, water-repellent cone material supports responsive operation.
• 2-Inch Copper Voice Coil: Uses a two-layer KSV former for thermal and mechanical capability.
• Ferrite Motor: High-density-flux ferrite magnet supports the speaker's motor structure.

Design & Installation

The SV 250.1 combines a high-density-flux ferrite magnet, copper voice coil, ultra-light pressed-paper cone, paper dust cap, and damped fabric surround. Its overall diameter is 257 mm, while the speaker's total depth is 108 mm. The mounting depth is 101 mm, so installers should verify rear clearance before cutting or mounting.

Plan for a 232 mm mounting cutout and use a rigid mounting surface to help keep the driver secure. This is a dedicated midrange speaker, so it should be used with a suitable crossover or active filter rather than run as a full-range speaker. For the specified high-output operating condition, use a 150 Hz high-pass filter with a 12 dB-per-octave slope and match the amplifier to the 4-ohm load.