Zero Ohm Systems ZOHM-2K-4 4-Channel Passive Loudspeaker Distribution System

Zero Ohm ZOHM-2K-4 4-Channel Passive Loudspeaker Distribution System

The Zero Ohm ZOHM-2K-4 passive loudspeaker distribution system connects any amplifier to multiple loudspeakers across four independent 2000W channels — without transformers, without impedance matching concerns, and without signal compromise. Compatible with speaker loads as low as 0.1 ohm, it delivers full-range audio from 20Hz to 20kHz while safely supporting parallel wiring of 2Ω, 4Ω, 8Ω, and 16Ω systems.

Also known as the "2K-4 Renegade," the ZOHM-2K-4 is purpose-built for integrators who need a passive speaker distribution system for stadiums, arenas, and houses of worship — environments where long cable runs and complex multi-zone audio installations traditionally demand costly 70V/100V transformer infrastructure. By eliminating that infrastructure entirely, the ZOHM-2K-4 reduces system complexity, lowers installation cost, and preserves the full dynamics of the source signal across every zone.

Built into a rugged 2RU chassis with Neutrik NL4 connectors, the ZOHM-2K-4 integrates cleanly into professional touring and fixed-installation racks. Phase alignment is maintained across all channels, ensuring coherent output regardless of how many amplifiers or speaker cabinets are connected in parallel. For system designers working in high-demand venues where distributed audio coverage and long-distance signal integrity are non-negotiable, the ZOHM-2K-4 delivers a scalable, transformer-free solution engineered in Canada to meet the rigors of professional use.

Key Features of the ZOHM-2K-4 Passive Interface

• 4-Channel, 2000W Per Channel: Handles high-power speaker loads across four independent channels, enabling large-scale distributed audio deployments without active components.
• Zero Ohm Ultra-Low Impedance Tolerance: Safely supports parallel speaker loads down to 0.1 ohm, eliminating the load-balancing constraints that restrict traditional passive systems.
• Transformer-Free Design: Removes the need for 70V or 100V step-up transformers, reducing rack weight, system cost, and potential signal coloration introduced by transformer cores.
• Universal Impedance Compatibility: Works with 2Ω, 4Ω, 8Ω, and 16Ω speaker systems, making it adaptable to virtually any professional loudspeaker cabinet in the field.
• Full-Range Frequency Response: Passes 20Hz–20kHz with full fidelity, preserving low-end impact and high-frequency detail that transformer-based systems can compress or roll off.
• Phase Alignment Across All Channels: Maintains consistent output phase across every amplifier and speaker connection, ensuring coherent coverage in multi-amplifier distributed systems.
• Neutrik NL4 Connectors on 2RU Chassis: Industry-standard connectivity in a road-ready rack format built for touring rigs, installed venues, and permanent fixed installations.

Technical Specifications

• Channels: 4
• Max Power Handling: 2000W per channel
• Frequency Response: 20Hz – 20kHz
• Minimum Output Impedance: 0.1 Ohms
• Compatible Impedances: 2Ω, 4Ω, 8Ω, 16Ω
• Input Connectors: Neutrik NL4
• Input Pin-Out — Ch 1 (1A): Pin 1+ / 1−
• Input Pin-Out — Ch 2 (2A): Pin 2+ / 2−
• Input Pin-Out — Ch 3 (1B): Pin 2+ / 2−
• Input Pin-Out — Ch 4 (2B): Pin 1+ / 1−
• Output Pin-Out — Ch 1 (1A): Pin 1+ / 1−
• Output Pin-Out — Ch 2 (2A): Pin 2+ / 2−
• Output Pin-Out — Ch 3 (1B): Pin 2+ / 2−
• Output Pin-Out — Ch 4 (2B): Pin 1+ / 1−
• Rack Height: 2RU
• Dimensions (H x W x D): 2.56" x 18.87" x 5.87" (with rack ears)
• Weight: 11.02 lbs (5 kg)
• Shipping Weight: 12.13 lbs (5.5 kg)
• Country of Origin: Canada

What's in the Box

• Zero Ohm ZOHM-2K-4 Main Unit
• Rack Ears (Pre-Installed)
• Quick Start Guide