Oehlbach Sub Xtreme 2.2m
Overview
The Sub Xtreme is a subwoofer cable that takes a rigorous technical approach with its large-section coaxial construction, specifically designed to optimize low-frequency transmission. Equipped with a single-crystal HPOCC copper conductor and XXL Silicon Evolution RCA connectors, it is aimed at demanding audiophiles and high-end home theater installations.
Coaxial Construction Optimized for Bass
The unique feature of the Sub Xtreme lies in its enlarged-section coaxial geometry, a fundamental technical characteristic for transmitting low-frequency signals. This architecture minimizes signal loss and ensures a linear response across the bass spectrum, where conventional cables reach their limits. The central conductor’s dimensions have been calculated to optimize the cable’s characteristic impedance at typical subwoofer frequencies, generally between 20 and 200 Hz.
The outer sheath, made of black braided fabric, provides mechanical protection while maintaining installation flexibility. This robust design withstands the rigors of installation in home theater environments, where cables may need to pass behind furniture or through technical conduits.
HPOCC Technology: Crystal-Clear Signal Purity
The central conductor uses HPOCC (High Purity Ohno Continuous Casting) technology, a copper manufacturing process that produces exceptionally long crystals. This single-crystal structure significantly reduces grain boundaries, which are sources of micro-distortions in audio signal transmission. For low frequencies, this purity results in better transient definition and more faithful reproduction of dynamic nuances.
HPOCC copper also offers higher electrical conductivity than standard OFC (Oxygen Free Copper), allowing for more efficient transmission of the high-amplitude signals typical of subwoofers. This feature becomes especially important in setups where the subwoofer is far from the amplifier or audio processor.
Double Shielding Against Interference
The Sub Xtreme’s shielding system combines two layers of silver-plated copper braid to create an effective barrier against electromagnetic interference. This double-layer protection is crucial in modern home environments, saturated with WiFi, Bluetooth, and other electronic emissions that can pollute the audio signal.
The silver plating on the shielding braids improves conductivity and corrosion resistance, ensuring long-lasting protection efficiency. This technical design allows the Sub Xtreme to maintain signal integrity even in complex setups where the cable runs alongside other electronic equipment.
XXL Silicon Evolution RCA Connectors
The XXL Silicon Evolution RCA connectors are a proprietary innovation from Oehlbach, developed specifically to optimize audio signal transmission. Their solid metal construction ensures a stable mechanical connection, eliminating micro-disconnections that can cause crackling or intermittent signal loss.
The 24-carat gold-plated contacts guarantee minimal contact resistance and protection against oxidation. This premium finish maintains connection performance over the long term, a critical aspect for permanent installations where connector accessibility may be limited.
Documentation
French
Technical Specifications
Connectivity and Construction
- Connector type: RCA
- Connectors: RCA Oehlbach XXL Silicon Evolution
- Material: solid metal
- Contact finish: 24-carat gold-plated
Cable Specifications
- Signal type: audio (low frequencies / subwoofer)
- Structure: coaxial
- Geometry: round
- Length: 2.20 m
- Conductor material: HPOCC – oxygen-free monocrystalline copper
- Shielding: multiple shielding
- Construction: 2 braids of silver-plated braided copper
- Outer sheath: premium braided fabric
- Color: black
Performance and Sound Qualities
- Large-section coaxial structure: optimal transmission of low frequencies
- HPOCC monocrystalline copper: exceptional signal purity, minimal distortion
- High-efficiency double shielding: reliable elimination of electromagnetic interference
- Premium XXL Silicon Evolution connectors: excellent grip, stable acoustic performance
- Precise, powerful, and dynamic bass
- High signal stability, even over long distances
General Information
- Applications: subwoofer connection, optimal reproduction of low frequencies
- Design: robust and elegant with a wear-resistant braided fabric sheath
- Manufacturing: made in Germany
- Manufacturer’s warranty: 30 years
Frequently Asked Questions
What audible difference can be expected compared to a standard subwoofer cable?
HPOCC technology and optimized coaxial construction provide better transient definition in the bass and reduced harmonic distortion. The differences are especially noticeable in complex musical passages with deep, fast bass, such as electronic music or action movie soundtracks.
Is the high price justified for typical home use?
The Sub Xtreme is primarily intended for high-end setups where every component is optimized. For a mid-range home theater system, the brand’s NF SUB models offer excellent value for money. Investing in the Sub Xtreme is justified with audiophile-grade subwoofers and amplifiers.
What length should I choose for my setup?
Choose the shortest possible length to minimize signal loss. The available lengths (2.2m to 8.8m) cover most home configurations. For large rooms or built-in installations, the longer versions maintain signal integrity thanks to the optimized coaxial construction.
Does the cable require a specific break-in period?
Like all high-end audio cables, the Sub Xtreme can benefit from a stabilization period of a few hours of use. The dielectric materials and metal connections reach their optimal stability after several cycles of operation, which is particularly noticeable in the consistency of low frequencies.
Is the Sub Xtreme compatible with all modern audio standards?
Its analog RCA design makes it compatible with all audio formats, from classic stereo signals to the latest Dolby Atmos and DTS:X processor LFE outputs. The cable’s extended bandwidth does not limit any current home audio standard.
- Eco-contribution included in the sale price.
- Manufacturer reference: D1C13302
- GTIN / EAN: 4003635133026
