Siltech Explorer 180L SSP HP 2x3m
Overview
Siltech Explorer 180L SSP HP is an entry-level speaker cable. It uses 6N monocrystalline copper conductors (99.9999% purity) and benefits from nearly 40 years of research in audio signal transmission. This model offers meticulous construction and reliable performance while remaining more accessible than the brand’s high-end silver cables.
A groundbreaking metallurgy for an entry-level cable
The heart of the Explorer 180L lies in copper technology that is anything but ordinary. Siltech uses 6N (99.9999%) purity monocrystalline copper, an ultra-pure form of the metal achieved after years of research to eliminate microscopic contaminants that typically degrade the performance of copper conductors over time. This monocrystalline structure, also called Mono X-tal by Siltech, has a remarkable feature: the wire is drawn in one continuous, uninterrupted piece with no grain boundaries, unlike conventional polycrystalline copper where the network created by multiple joints interferes with electrical transfer.
The construction adopts a twisted-pair architecture with two conductor cores, a configuration that enables natural cancellation of electromagnetic interference. This geometry, combined with the conductor’s exceptional purity, ensures signal transfer with extremely low losses—characteristics usually reserved for cables using precious metals.
Sophisticated insulation against interference
Insulation is a crucial aspect in the Explorer 180L’s design. Siltech employs a double insulation layer combining DuPont Kapton and Teflon, two materials with exceptional dielectric properties. Kapton, a very thin film that provides the cable with shielding and mechanical strength with minimal bulk compared to traditional materials, works in synergy with Teflon to create an effective barrier.
This combination, reinforced by super shielding, offers remarkable protection against mechanical, radio-frequency, and electromagnetic interference. The self-shielding construction of the coaxial twisted geometry also helps maintain signal integrity, even in electrically noisy environments.
Gold-plated connectors for optimal transmission
The Explorer 180L SSP HP is equipped with SSP006 connectors available in banana or spade configurations, all gold-plated. These dedicated Siltech terminations ensure a reliable and durable connection to amplifier and speaker terminals. Gold plating prevents oxidation and maintains optimal conductivity over the long term, aligning with the Explorer range’s philosophy of durability.
All Explorer cables are manufactured in the Netherlands to the same exacting standards as all Siltech products, at the company’s factory in Elst, near Arnhem. This fully in-house production enables rigorous quality control at every stage of manufacturing.
Sound performance and range positioning
Siltech’s instantly recognizable sonic signature—with its low distortion—can be found in the Explorer series, which offers superb dimensionality, precise imaging, low coloration, high resolution, accurate harmonics, and realistic musical expression. Explorer cables bring a breath of fresh air to the vast majority of audio systems with an open, lively, and engaging sound.
The Explorer range includes three levels of interconnects, two speaker cables, USB and FireWire digital interconnects, as well as a power cable, allowing a system to be fully wired with complete sonic coherence. The 180L is the higher model among the series’ speaker cables, above the 90L while remaining within the range’s accessible philosophy.
Documentation
Technical Specifications
Construction and Materials
- Metallurgy: ultra-pure 6N monocrystalline copper
- Architecture: twisted pair
- Number of cores: 2
Insulation and Protection
- Insulating materials: Kapton, Teflon
- Protection: super shielding to reduce interference
Available Connectors
- SSP006 banana
- SSP006 spade
- Finish: gold plating on all connectors
Key Advantages
- Twisted pairs in ultra-pure 6N monocrystalline copper
- Kapton-Teflon insulation and super shielding to reduce interference
- Wide selection of S-Conn gold-plated connectors
- Durable and reliable construction
- Exceptional value for money for entry-level audiophile gear
General Information
Siltech’s Explorer speaker cable uses twisted pairs of high-purity monocrystalline copper and offers a wide choice of SSP006 banana and SSP006 spade terminations, all gold-plated. Designed to deliver accessible audiophile performance, it ensures precise signal transfer and excellent durability for connecting high-fidelity loudspeakers.
Frequently Asked Questions
What is the difference between monocrystalline copper and ordinary copper?
The monocrystalline copper used in the Explorer 180L is drawn as a continuous piece with no grain boundaries, unlike standard polycrystalline copper. This uniform structure eliminates internal barriers that disrupt electrical flow, delivering superior conductivity. Furthermore, Siltech’s 6N (99.9999%) purity copper removes contaminants that degrade performance over time in conventional cables.
Why does Siltech use copper in the Explorer range instead of silver?
Siltech, historically specializing in silver and silver-gold conductors, developed the Explorer copper range to offer its technologies at a more accessible price point. After years of research, the company succeeded in producing exceptionally pure monocrystalline copper that offers superior conductivity and remarkable longevity, enabling authentically Siltech performance without the costs associated with precious metals.
How does the Kapton-Teflon double insulation protect the signal?
DuPont Kapton forms an ultra-thin yet extremely robust film that provides effective mechanical and electrical shielding. Combined with Teflon, renowned for its excellent dielectric properties, this dual layer creates a barrier against radio-frequency and electromagnetic interference. This protection helps maintain signal purity even in electrically challenging environments.
How does the Explorer 180L compare to the 90L model?
The 180L represents a step up from the entry-level 90L. While both use the same 6N monocrystalline copper and Kapton-Teflon double insulation, the 180L offers a more elaborate construction with optimized geometry for superior performance. It is the logical choice for more demanding systems while maintaining the Explorer range’s accessible philosophy.
Are the SSP006 connectors compatible with all equipment?
SSP006 connectors in banana or spade versions fit the vast majority of amplifier and speaker terminals on the market. Gold plating not only ensures excellent conductivity but also provides protection against oxidation, ensuring a reliable connection over time. Other connector types may be available on request from local distributors.
- Eco-contribution included in the sale price.

