Introduction: Meet the SFX OSP1-61 LSZH Shielded 1‑Pair Cable
SFX OSP1-61 LSZH Shielded 1‑Pair Cable, 22 AWG, 100 mis a purpose-built screened two-conductor cable designed for professional audio, control and instrumentation applications. Supplied on a 100 m reel, this cable combines 22 AWG tinned copper conductors, HDPE insulation, an AI‑PET foil shield with a tinned drain and a Low‑Smoke Zero‑Halogen (LSZH) outer sheath in grey (RAL 7042). With a 600 V rating and industry conformity (CE, RoHS, LVD; CPR class Eca), it targets installers and systems integrators who need reliable screening performance and safe, low‑smoke behaviour in confined or public spaces.
Key features at a glance
- Conductor:22 AWG (7×0.30 mm) tinned copper for corrosion resistance and flexibility.
- Shielding:AI‑PET (aluminium/polyester) foil with tinned copper drain for effective screening; vendor sheet lists shield coverage ≥115%.
- Jacket:LSZH outer sheath (grey RAL 7042) for low smoke and halogen‑free performance in case of fire.
- Dimensions & ratings:Nominal overall diameter ≈ 4.40 ±0.20 mm, jacket thickness ≈ 0.6 mm, 600 V rated, CPR class Eca.
- Pack size:100 m reel — convenient for run planning and terminations.
Detailed specifications and benefits
The technical composition of the SFX OSP1-61 addresses both electrical performance and practical installation needs. Below are the core specifications and why they matter.
- 22 AWG (7×0.30 mm) tinned copper conductors: multi‑strand construction balances flexibility and current carrying capacity. Tinning helps resist corrosion and eases soldering and termination into blocks, plugs and connectors.
- HDPE insulation (black & clear cores): provides stable dielectric properties and mechanical protection around each conductor, supporting consistent electrical performance in signal runs.
- AI‑PET foil shield with tinned copper drain: this type of overall foil plus drain provides effective rejection of electromagnetic interference (EMI) and radio frequency interference (RFI) — essential for low‑level audio, control signals and instrumentation where noise can degrade performance.
- Shield coverage listed as ≥115% (vendor sheet): high shield coverage means better continuity of the shield and improved protection against ingress of noise compared with lower coverage foil constructions.
- LSZH jacket (grey RAL 7042): in environments such as theatres, transport hubs, plant rooms, hospitals and confined spaces, LSZH materials reduce smoke density and avoid halogenous acidic gases during combustion — improving occupant safety and minimising corrosive residues on equipment.
- Jacket thickness ≈ 0.6 mm and overall diameter ≈ 4.40 ±0.20 mm: compact enough for tidy routing and gland selection while robust for cable handling and installation.
- Rated voltage: 600 V — suitable for a wide range of audio, control and low‑voltage instrumentation circuits.
- Standards: CE, RoHS2 and LVD compliance, and CPR class Eca as listed by the vendor — helpful for projects that require documented conformity to European safety and environmental standards.
Benefits: what this cable delivers in real installations
- Noise rejection:The overall foil shield plus drain gives consistent screening for balanced audio and sensitive instrumentation lines, reducing hum and interference from nearby power or data cables.
- Durability and corrosion resistance:Tinned copper conductors extend service life in environments where moisture or oxidation could be a concern.
- Safety in confined spaces:The LSZH jacket minimises smoke and harmful gases in fire events, an important consideration in public buildings and transport environments.
- Ease of termination:Standard conductor sizes and the tinned drain allow straightforward termination to XLRs, screw terminals, barrier strips and glands when installed by competent personnel.
- Value for installers:Supplied on a 100 m reel and competitively priced (suggested price around 44.17), it delivers cost‑effective bulk cable for medium to large installations.
Use cases and scenarios where the product excels
This cable is versatile across multiple industries and installation types. Typical applications include:
- Balanced microphone runs and line‑level signals in venues, theatres and recording spaces where EMI rejection and flexible routing are essential.
- Stage snake tails and patching runs where LSZH behaviour is preferred for backstage areas and enclosed fly towers.
- Control circuits for lighting, HVAC and access control — the shielding helps maintain signal integrity when cables run near power or switching equipment.
- Security and access control wiring where reliable low‑level signalling and fire‑safety-compliant materials are required.
- Sensor and instrumentation cabling within control panels, manufacturing cells and machine enclosures where accurate data and immunity from interference are priorities.
- Panel wiring where compact size and a high‑quality shield make routing and connection simpler and more robust.
How it compares to similar products
When selecting cable for audio, control or instrumentation, installers often weigh trade‑offs between shielding type, conductor size, jacket material and price. Here’s how SFX OSP1-61 stacks up against common alternatives:
- Advantage: The OSP1-61’s foil shield and drain provide far better immunity to EMI/RFI than unshielded conductors, significantly reducing hum and noise in long runs.
- Trade‑off: Slightly higher cost and marginally larger diameter due to the shield and jacket.
- Advantage: Foil plus drain typically offers complete coverage and better high‑frequency screening; braid provides good low‑frequency shielding but can miss gaps at very high frequencies.
- Trade‑off: Braid can be more mechanically robust for repeated flexing; for many fixed installations, the foil shield is preferable.
- Advantage: LSZH jacket reduces smoke and toxic gas production in a fire — crucial for public or enclosed spaces.
- Trade‑off: LSZH can be slightly more expensive than standard PVC, but the safety benefits often justify the premium.
- Advantage: 22 AWG is compact and well suited to signal and control runs where current is low and space is constrained; single‑pair construction simplifies point‑to‑point wiring.
- Trade‑off: If higher current or lower DC resistance is required (e.g., long power leads or speaker feeds), larger conductors such as 18 AWG or multi‑pair constructions may be more appropriate.
Customer testimonials and feedback
Official, sourced customer testimonials for this specific reel were not provided. Below are representative, anonymised examples of the sort of feedback installers and system integrators commonly report for products with similar construction and performance:
- "Good screening and easy to terminate — reduced hum on long microphone runs in our venue."
- "LSZH jacket was a requirement for the project; this cable gave us confidence during commissioning and fit neatly in our trays."
- "Tinned conductors terminated cleanly and soldered well for our control panel work. Flexible enough to route in tight spaces."
These comments are provided as typical examples rather than direct quotes from verified purchasers. For verified customer reviews, consult retailer or vendor pages and user forums for deployment notes and long‑term experience.
Installation tips and practical considerations
- Terminate the drain correctly: For best screening performance, connect the tinned drain to the system earth at one end (or follow your system’s earthing practice) and ensure a secure mechanical termination using appropriate connectors or glands.
- Use appropriate glands and strain reliefs sized for a ~4.4 mm OD cable; the LSZH jacket and shield must be accounted for when choosing ferrules and backshells.
- Avoid running audio or instrumentation cable in tight proximity to high‑voltage power runs; where crossing is unavoidable, make perpendicular crossings to minimise coupling.
- Follow local wiring regulations and have a competent person perform installation and testing.
Conclusion: Why SFX OSP1-61 is a strong choice
The SFX OSP1-61 LSZH Shielded 1‑Pair Cable combines practical construction, effective shielding and safety-focused materials in a compact, cost‑effective 100 m reel. Its tinned 22 AWG conductors, AI‑PET foil shield with tinned drain, and LSZH jacket make it particularly well suited to balanced audio, control circuits and instrumentation where noise immunity and fire‑safety behaviour matter.
For projects in theatres, public buildings, transport hubs, hospitals or any confined space where smoke and halogen emissions are a concern, this cable offers an attractive balance of performance and value. If you need reliable screening for low‑level signals and a cable that meets contemporary regulatory expectations, the SFX OSP1-61 is a practical and professional choice.
Note:Always consult the vendor datasheet for full mechanical and electrical characteristics, and ensure installation complies with local codes and the requirements of the particular system being installed.
