Audioquest Irish red 8m

AudioQuest Irish Red Subwoofer Cable

Connecting a subwoofer to its amplifier may seem trivial, until a low hum creeps into the bass or a long run alongside a power strip starts interfering with the signal. AudioQuest’s subwoofer cable is designed for this specific situation: carrying a mono LFE signal (the channel dedicated to low-frequency effects) over what is often a considerable distance, protected from the electrical interference lurking behind a TV cabinet.

The signal path, from core to insulation

Each conductor consists of a solid copper strand with 0.5% silver plating. The choice of solid core is far from incidental: in a stranded cable, the signal jumps from one wire to another, and this interaction degrades performance. A single continuous conductor prevents this. The silver plating promotes surface conduction, where the highest frequencies travel. On an LFE channel limited to low frequencies, this refinement remains subtle; it comes fully into its own if you repurpose the cable for a conventional line-level connection, which its construction allows. The symmetrical coaxial geometry positions the positive and negative conductors identically, with the shielding kept away from the audio path. The insulation is nitrogen-injected foamed polyethylene: the air it traps absorbs very little energy and limits the dielectric losses that blur the signal.

Keeping interference away from ground

Behind a TV cabinet, a subwoofer cable runs alongside power cords and power supplies, sources of radio-frequency and electromagnetic interference. Conventional shielding picks up this noise and then drains it to the system ground, potentially contaminating a reference that is meant to remain stable. AudioQuest takes a different approach with its metal-layer noise-dissipation system: rather than sending everything to ground, it absorbs and reflects part of the unwanted energy before it reaches the ground plane of your equipment. The background becomes quieter, and the bass stands out more clearly.

Cold-welded, solder-free plugs

The RCA connectors are gold-plated and terminated without a single solder joint. AudioQuest crimps the conductor under very high pressure, creating a mechanical contact known as cold welding. The benefit: it avoids solder, whose poor conductivity would otherwise sit in the signal path. The connection remains secure over time, and the plug fits firmly into both the subwoofer input and the amplifier’s subwoofer output.

The ground wire that eliminates hum

An active subwoofer connected to an amplifier or AVR can sometimes produce ground hum, that deep, continuous buzz revealing a ground loop. The cable provides a simple answer: two small lugs connected to a ground wire. In the event of hum, one lug is screwed to the metal chassis of the subwoofer amplifier and the other to that of the source device, neatly closing the loop. Most installations will not need it, but when the problem arises, the solution is already in the box.

Where the Irish Red fits in the range

AudioQuest offers its subwoofer cables in an animal-themed series, from the entry-level Black Lab to the more fully featured Boxer and Husky models. The Irish Red sits in the middle: it retains the geometry and shielding principle of the lower models, then raises the material standard with silver-plated conductors and a more refined exterior finish. The improvement is measured less in flashy specifications than in manufacturing consistency.

Technical Specifications

Composition

• Metal: solid silver 0.5%
• Dielectric: expanded polyethylene
• Geometry: symmetrical coaxial
• Noise dissipation system with metallic layers

Finishes

• Sheath: up to 5 m - black, red braid
• Connectors: cold-welded, gold-plated

Dimensions

• Length: 5 m