The **S4-4E6-R** is a high-performance cable manufactured by **Canare**. It is specifically an AT-type "Star Quad" microphone cable designed for professional audio applications where electromagnetic interference (EMI) and radio frequency interference (RFI) rejection are critical. --- ### 1. Technical Specifications The following table outlines the physical and electrical characteristics of the S4-4E6-R: | Feature | Specification | | :--- | :--- | | **Number of Conductors** | 4 (Star Quad configuration) | | **Outer Diameter** | 4.8 mm | | **Conductor Size** | 24 AWG | | **Shield Type** | High-density Tinned Copper Braid | | **Jacket Material** | Flexible PVC (Matte Finish) | | **Color** | Red (indicated by the "-R" suffix) | | **Resistance** | Approx. 9.8 $\Omega$ / 100m | --- ### 2. Internal Components & Construction The "S4" series is unique due to its slim profile while maintaining the "Star Quad" architecture. #### A. Star Quad Arrangement Instead of two conductors (as found in standard balanced cables), the S4-4E6-R uses four conductors. * **Wiring Logic:** Two conductors are used for the "Hot" signal and two for the "Cold" signal, wired in opposite pairs. * **Result:** This cancels out induced noise from SCR dimmers, fluorescent lighting, and power cables much more effectively than standard twisted-pair cables. #### B. The Conductors * **Material:** High-conductivity annealed copper. * **Insulation:** Cross-linked Polyethylene (XLPE). This material resists melting during soldering and provides low capacitance for better high-frequency response. #### C. Shielding and Filling * **Braid Shield:** Uses a tinned copper braid with a high density (usually over 94%). This provides physical strength and excellent protection against RF interference. * **Cotton Fillers:** Internal cotton fibers are used to maintain the cable’s round shape and prevent "microphonics" (noise caused by the cable moving or rubbing against itself). --- ### 3. Key Applications Because of its thin diameter (4.8mm) and high noise rejection, the S4-4E6-R is typically used for: 1. **Bantam/TT Patch Cords:** Its thinness makes it ideal for high-density patch bays. 2. **Lavalier/Miniature Mics:** Used in setups where a heavy-duty cable is too bulky. 3. **Rack Internal Wiring:** Wiring inside consoles or equipment racks where space is limited. ---