James Loudspeaker ST10-70 - Passive 10" Subwoofer 70V

Product Overview

The James Loudspeaker ST10 70V is a passive 10" subwoofer wired for 70V operation, built for commercial AV installations that distribute added low-frequency reinforcement across long cable runs and multiple zones. Its 10-inch driver delivers stronger bass than the 8-inch ST model on constant-voltage amplifier lines, making this 70V passive subwoofer a fit for distributed theaters and venue systems. As a passive sub, it runs from an external 70V subwoofer amplifier. The ST10 70V suits integrators specifying constant-voltage distributed bass with greater displacement.

Product Description

The ST10-70 is part of the James Loudspeaker ST subwoofer family, where the suffix indicates electrical configuration. The 10 indicates a 10-inch driver and the -70 indicates 70V constant-voltage wiring suited to distributed amplifier lines with long cable runs. Because it is passive, the ST10-70 requires an external 70V subwoofer amplifier, leaving power and signal processing under the integrator's control. It is the distribution counterpart to the 4-ohm ST10-4, which shares the same 10-inch driver but is wired for low-impedance operation, and it steps up in displacement from the ST8-70. Within the ST range it scales further to the ST12-70 for larger rooms. The full lineup is available in the James Loudspeaker collection. This makes the ST10-70 a practical specification for constant-voltage subwoofer systems needing added output.

Key Features

• 10-Inch Driver — A single 10-inch woofer increases low-frequency output over the 8-inch ST model.
• 70V Configuration — Wired for 70V constant-voltage operation to suit distributed amplifier lines.
• Passive Operation — Driven by an external 70V subwoofer amplifier for full integrator control.
• ST Family Compatibility — Matches other ST subwoofers for consistent multi-zone specification.
• Scalable Range — Specifies cleanly alongside larger ST models for bigger rooms.

Typical Applications

• Distributed 70V low-frequency systems
• Commercial AV and entertainment venues
• Multi-zone audio installations with long cable runs
• High-end residential and hospitality spaces

Technical Specifications

Frequently Asked Questions

Does the ST10-70 need an amplifier?
Yes. It is a passive subwoofer and requires an external 70V subwoofer amplifier.

What distribution is it wired for?
It is wired for 70V constant-voltage operation, suited to distributed amplifier lines.

What is the driver size?
The ST10-70 uses a single 10-inch driver.

How does it differ from the ST10-4?
The ST10-4 is the 4-ohm version of the same 10-inch driver, wired for low-impedance operation instead of 70V.

How does it compare to the ST8-70?
The ST10-70 uses a larger 10-inch driver for greater displacement than the 8-inch ST8-70.