
Connect every detail of the music carefully, and let your beloved car’s sound linger with deep resonance.
【Royal Spirit SP-1 (3.5m)|Revisiting your car audio with Zonotone speaker cable】
After swapping your speakers or amplifier, you may find yourself thinking, “The amount of information in the sound has increased, but I want a bit more spread,” or “I want to perceive the positioning relationship of vocals and instruments in a more natural way.”
Royal Spirit SP-1 (3.5m) is a Zonotone speaker cable. It uses a hybrid conductor that combines four different materials, including ultra-high-purity 7N-class Cu as well as HiFC and PCUHD.
Speaker cables aren’t flashy parts, but they’re an important section that carries the signal from the amplifier to the speakers. By tuning not only the performance of the speakers and amplifier but also the entire system—including the cables and connection methods—you may be able to rethink how the sound comes together.
Rather than simply making the sound louder or stronger, the Royal Spirit SP-1 (3.5m) is designed for people who want to naturally feel the ambience around the vocals, the front-to-back relationships between instruments, and the sense of soundstage expansion.
For example: in the vocal songs you usually listen to, can you feel the vocal position stabilizing? In songs with many instruments, can you hear each sound without too much overlapping? Even on long drives, can you enjoy music without turning the volume up too high?
Of course, changing the cable alone won’t make everything different, but if your current system feels a little flat or you want to draw out another level of performance from your speakers and amplifier, it’s a worthwhile part to consider.
The sound of a car audio system is determined by a combination of many elements, such as the speakers, amplifier, DSP, power supply, installation method, and the in-car environment.
Therefore, replacing to the Royal Spirit SP-1 (3.5m) doesn’t necessarily mean you’ll feel the same change in every vehicle. There are also cases where you should review the installation condition and sound adjustments before changing the cable.
If it were me, I would first confirm what kind of sound your current system produces. Then I would organize whether replacing the cable could bring you closer to the sound you’re aiming for, or whether it would be better to allocate the budget to other areas.
Even with the same cable, the condition after installation can differ depending on where and how it’s incorporated, and how the terminals and connection parts are finished.
At LOGON, we consider together whether there’s a worthwhile reason to replace it, while checking the vehicle model, your current audio setup, the speakers/amplifiers you’re using, and the music you usually listen to. After installation, we also adjust the sound as needed, looking not only at the cable but at the overall balance of the system.
If you’re unsure about things like “Will it suit my current system?” or “Will I be able to feel the change after replacing it?”, we won’t force you to replace it. Since we want to avoid guidance that could change later, we’ll confirm your vehicle and your current sound first, and then recommend the parts that are worth investing in.
If you want to enjoy your usual music a little deeper and more naturally with the Royal Spirit SP-1 (3.5m), please feel free to consult us. Let’s think through the way to integrate it that suits your car and move toward a sound you can be satisfied with.
【Basic Information】
【Conductor】
| Cable Type | Speaker cable (Royal Spirit series) |
| Conductor Construction | Proprietary DMHC construction combining four different copper conductor types (ultra-high-purity 7N-class copper, HiFC, PCUHD, OFC) in fully independent 8-strand cores |
| Core Count / Conductor Size | 2.5 sq mm (8 strands) x2 - hot and cold sides each bundled from 8 independent cores |
| Connector Type | Thick rhodium-plated original Y-spade and banana plug terminals (combination selectable) |
| Shielding | High-density copper braid shielding |
| Jacket / Outer Diameter | PVC sheath (EU-RoHS compliant) covered with dual-color nylon braid; approx. 15.0 mm outer diameter |
| Product Line | Part of Zonotone's 10th-anniversary "Royal Spirit" series (standalone line) |
| Length Options | Standard 2.0 m pair, with custom lengths available from 1.0 m in 0.5 m increments (price varies by length) |