
Speaker cable that supports your car’s sound creation through a reliable connection
【SPECIAL 4.0 SPEAKER WIRE (70m)|Speaker Cable That Brings Out Bass Expression】
As you work to improve the sound of your car audio, this is a speaker cable suited for those who want to review not only the speakers and amplifiers, but also the cables themselves.
SPECIAL 4.0 SPEAKER WIRE is a 70m bulk spool using a conductor size of 4 sq (equivalent to 12 AWG). With an advanced multi-strand BRC conductor, it is designed to align the compatibility between individual strands and the condition among the wires, aiming to transmit signals efficiently from the amplifier to the speaker.
It uses a CAFPE® insulator with a two-layer structure, with a homogeneous air-foamed PE layer inside. While maintaining balance across the entire frequency range, its notable strength is making it easier to bring out the thickness and expressiveness especially from the mid-bass to the sub-bass.
Rather than simply making the bass louder, this cable adds thickness to the portion that forms the foundation of music. It’s also a cable that you may want to consider if you find vocal or instrument sounds feel thin, or if the connection with your subwoofer feels hard to make cohesive. In a multi-amp system, I think it will also be easy to use when you want to choose cables according to each speaker’s role.
However, cable performance isn’t determined by thickness or material alone. The final impression changes depending on how you route the cable through the vehicle, terminal processing, connection methods, and the combination with your speakers and amplifiers. If it were me, I would check your overall car system and your sound preferences, then decide to use it where it’s needed.
SPECIAL 4.0 SPEAKER WIRE (70m) is a speaker cable that’s easy to recommend for people who want to organize and revisit their car audio wiring all at once, or for those who want to tighten up the expression of the bass range a bit more. Let’s整理 together how to use it in a way that suits your vehicle model and current system, while looking at the actual car and its configuration.
【Basic Information】
Product name: SPECIAL 4.0 SPEAKER WIRE
Type: Speaker cable
Spool length: 70m bulk spool
【Conductor】
Conductor size: 4 sq (equivalent to 12 AWG)
Conductor: Multi-strand BRC conductor
【Insulation】
Structure: Two-layer structure
Material: CAFPE® insulation
Internal structure: Homogeneous air-foamed PE layer
| Cable Type | Speaker cable (dual parallel-conductor design, SPECIAL series) |
| Conductor Gauge (AWG equivalent) | 4.0 mm² per conductor x 2 cores (approx. 12 AWG) |
| Conductor Construction | High-purity bare copper (BRC) stranded conductor, 161 strands of 0.18 mm wire twisted together |
| Insulation Material | Dual-layer CAFPE® insulation (thickened expanded polyethylene foam) |
| Outer Jacket | Specialized vibration-damping PVC outer jacket |
| Termination Options | Optional factory termination with banana or spade connectors (combinations such as Bn/Bn, Sp/Bn, Sp/Sp) |
| Shielding | Unshielded (standard speaker-cable construction) |
| Length / Supply Format | Sold by the meter (cut to length); supplied on spools (e.g., 70 m reels) |