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

The Zero Ohm ZOHM-4K-4 is a four-channel passive loudspeaker distribution system that handles up to 4,000 watts per channel, enabling amplifiers to safely drive multiple speakers in parallel — including loads as low as 0.1 ohms — without transformers, signal degradation, or frequency roll-off. It delivers full-range audio from 20Hz to 20kHz across all connected loudspeakers, making it a direct, high-fidelity replacement for conventional 70V and 100V distributed audio systems.

Designed for integrators managing complex large-venue installs, the ZOHM-4K-4 — also known as the "4K-4 Disruptor" — eliminates the transformer bottleneck that limits dynamic range and coloration in traditional distributed audio. It handles parallel speaker loads at 2, 4, 8, and 16 ohms, making it the ideal passive loudspeaker distribution system for stadiums, houses of worship, multi-zone commercial environments, and any application demanding uniform power delivery across long cable runs. Integrators seeking a parallel speaker distribution system without transformers will find this unit purpose-built for exactly that challenge.

The ZOHM-4K-4 connects between any professional amplifier and speaker network using standard Neutrik NL4 connectors, with clearly labeled I/O channel assignments for clean signal routing and precise zone control. Phase alignment is maintained across all four channels, ensuring coherent reproduction in arrays where timing accuracy is critical. Built in Canada to professional install standards, this rackmount passive interface handles the impedance demands of large-scale deployments without introducing active components into the signal path.

Key Features of the Zero Ohm ZOHM-4K-4 Passive Interface

• 4,000W Per Channel Handling: Delivers massive headroom across all four channels simultaneously, supporting high-SPL installations without thermal limiting or signal compression.
• Sub-1-Ohm Parallel Operation: Enables multiple loudspeakers to be connected in parallel at impedance levels as low as 0.1 ohms — safely and without amplifier instability.
• No Transformers Required: Replaces 70V and 100V transformer distribution systems entirely, eliminating frequency roll-off, phase anomalies, and the cost of transformer maintenance.
• Full-Range Frequency Response: Maintains 20Hz–20kHz response across all channels, preserving the full audio bandwidth that transformer-based systems routinely sacrifice.
• Neutrik NL4 Connectivity: Industry-standard locking connectors on all inputs and outputs ensure reliable, interference-free signal routing in demanding install environments.
• Universal Impedance Compatibility: Works with 2Ω, 4Ω, 8Ω, and 16Ω speaker loads, giving integrators flexibility to mix speaker types and configurations within a single system.
• Rackmount Form Factor, Built in Canada: Ships with pre-installed rack ears for immediate deployment; rugged Canadian construction meets professional installation durability standards.

Technical Specifications

• Channels: 4
• Max Power Handling: 4,000W per channel
• Frequency Response: 20Hz – 20kHz
• Minimum Output Impedance: 0.1 ohms
• Compatible Speaker Impedances: 2Ω, 4Ω, 8Ω, 16Ω
• Input Connectors: Neutrik NL4
• Output 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−
• Dimensions (H x W x D): 2.56" x 18.87" x 5.87" (with rack ears)
• Weight: 11.0 lbs (5 kg)
• Country of Origin: Canada

What's in the Box

• Zero Ohm ZOHM-4K-4 Main Unit
• Rack Ears (pre-installed)
• Quick Start Guide