专业音响扩声主流线 - 2 × 4.0 mm²
采用多芯高纯度4N无氧铜导体、PVC绝缘、抗拉填充与柔软PVC护套的专业扩声线。
| 规格 | 2 × 4.0 mm² |
|---|---|
| 导线根数 | 2 |
| 导线横截面积 / 线规 | 4.0 mm² / 12 AWG |
| 导线绝缘体 | PVC |
| 填充物 | Cotton thread with cotton paper |
| 外皮 | PVC |
| 外径 | 11 mm |
| 颜色可选 | Black / royal blue / dark green |
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Features
4N oxygen-free copper conductors, PVC insulation, cotton thread and cotton paper reinforcement, flexible PVC jacket, and multiple jacket color options.
产品特性
高纯度4N无氧铜绞合导体，PVC绝缘，棉线与棉纸抗拉填充，柔软PVC护套，支持多种护套颜色。
Applications / 应用
Touring sound, professional audio installation and fixed building installation.
专业流动演出、音响工程安装及建筑内部固定安装。
Choosing the Right LBSRVH Cross-Section
The LBSRVH series covers main speaker cable from 2 × 1.5 mm² to 2 × 6.0 mm² plus 4-core and 6-core versions. The 2 × 4.0 mm² (12 AWG) construction is the mid-large cross-section in the series, specified for touring sound, professional audio installation and fixed building installation. It suits amplifier-to-speaker runs where the installer wants the current-carrying capacity of 4.0 mm² without stepping up to the heavier 2 × 6.0 mm² drum.
| Model | Conductor | Typical use |
|---|---|---|
| LBSRVH-2X2.5 | 2 × 2.5 mm² (approx. 13 AWG) | Short runs, monitors, lower-power amplifiers |
| LBSRVH-2X3.0 | 2 × 3.0 mm² | General PA and installation runs |
| LBSRVH-2X4.0 (this page) | 2 × 4.0 mm² / 12 AWG | Main speaker runs, touring sound, fixed install |
| LBSRVH-2X6.0 | 2 × 6.0 mm² | Long high-power runs, large PA systems |
As a rule of thumb for professional audio, longer runs and higher amplifier power call for a larger cross-section to limit resistance and voltage drop. For a main left/right speaker run over 20–30 m at typical PA power, 4.0 mm² is a common specification; above that, many engineers step up to 6.0 mm². For short monitor or fill runs, 2.5 mm² is usually enough.
Construction and What It Means in Use
This cable uses 4N oxygen-free copper (OFC) conductors with PVC insulation, cotton thread and cotton paper reinforcement, and a flexible PVC jacket at 11 mm outer diameter. The cotton filling keeps the pair geometry stable when the cable is coiled, packed and pulled on tour, and the flexible jacket helps the cable lie flat in cable trays and around racks. Jacket colour options (black, royal blue, dark green) make channel identification practical in multi-run installations.
Compare the twisted and parallel alternatives in the same factory range: the full speaker cable catalogue lists LBSRVH main cable, LBSRVS twisted speaker cable and LBSRVB parallel speaker cable, so the construction can be matched to the application — parallel for fixed racks, twisted for reduced induced noise in longer signal paths, and jacketed main cable for touring.
Pairing with Connectors and Multichannel Runs
For stage and touring use, LBSRVH-2X4.0 is normally terminated with professional connectors such as the LBSSPK Speakon-compatible connector. In multichannel installations, the 4-core versions of the series (LBSRVH-4X4.0, LBSRVH-6X4.0) let an installer run two or three speaker circuits in a single cable for bi-amping or distributed systems — see the 4-core speaker cable for bi-amping guide for the wiring logic.
Buyer FAQ
What information is needed to quote LBSRVH-2X4.0?
Please provide the required specification, length or packaging unit, quantity, application and destination country or region. LBS confirms the variant, drum or coil packaging and export packing against those details.
Can this cable be supplied in a different jacket colour?
Jacket colour options are black, royal blue and dark green on the standard product. OEM / ODM projects — construction, jacket colour, printing, length, packaging and branding — can be reviewed according to the confirmed product and project quantity through the LBS OEM process.
Is LBSRVH-2X4.0 suitable for permanent building installation?
Yes — the page lists fixed building installation as a documented application alongside touring sound and professional audio installation. For long fixed runs, confirm the routing and required length with LBS before ordering.
How does 4.0 mm² compare to 12 AWG?
4.0 mm² is the metric cross-section; 12 AWG is the equivalent American Wire Gauge designation. The LBS spec table lists the cable as 4.0 mm² / 12 AWG, so either naming convention can be used when specifying.
Can LBSRVH-2X4.0 be cut to custom lengths?
Yes — LBS supplies professional cable in custom lengths for projects. Send the per-run length and total quantity when requesting a quotation so the packaging and drum/coil arrangement can be confirmed.
Ask About LBSRVH-2X4.0
Confirm the cross-section, length, colour and quantity for your speaker cable order — message us on WhatsApp or use the contact form. Related guides: Speaker Cable Gauge Guide · Speaker Cable for Subwoofer · OFC vs CCA Speaker Wire · Custom Cable OEM / ODM Service
Related Guides / 相关指南
- Speaker Cable for KTV: Gauge, Installation and Buying Guide for Karaoke Rooms — gauge and wiring guidance for KTV room installations
- Audio Cable Supplier for Philippines Distributors and Installers — sourcing audio cable for SEA projects
相关演出级规格
同系列其他线规与芯数规格
以下型号与本页产品属于同一演出级音箱线结构——柔性多芯 4N 无氧铜导体、PVC 绝缘、抗拉填充与 PVC 护套——仅为相邻的芯数（2、4、6、8 芯）与导体截面积（1.5 mm² 至 6.0 mm²）规格。
产品采购常见问题
提交询价前
以下回答以本页产品信息为基础；最终项目条件取决于双方确认的规格。
询价 LBSRVH-2X4.0 需要提供什么信息？
请提供所需规格、长度或包装单位、数量、应用以及目的国家或地区。
专业音响扩声主流线 - 2 × 4.0 mm² 是否可以沟通 OEM / ODM 项目？
可根据确认后的产品和项目数量评估结构、护套颜色、印字、长度、包装和品牌要求。
如何选择正确的规格？
请先比较本页技术规格表；如需协助确认规格，请将应用和所需尺寸发送给乐宝声。
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