【Zonotone Grandio SP-1 (5.0m) | Speaker cable that brings out the thickness and soundstage width】

Even after replacing the speakers, I want a bit more body in the sound. I’d like the vocals to come forward naturally. I want to enjoy the punch in the low end and the lingering decay of instruments thoroughly.

If you’re looking for those kinds of sonic changes, the speaker cable from Zonotone—Grandio SP-1 (5.0m)—is worth considering.

In car audio, speaker cables that deliver the music signal are also part of the system, not just the speakers and amplifiers. If, after replacing the speakers, the sound still feels a little thin, or if you want to raise the sound’s density and the presence of the vocals another step, it’s meaningful to review the setup including the cables.

For those who want to enjoy sound density and a sense of scale

Grandio SP-1 is a speaker cable made by combining five different materials, including ultra-high-purity 7N-class Cu, high-function pure copper wire HiFC, high-purity oxygen-free copper wire PCUHD, modern tin-plated high-purity copper, and high-purity oxygen-free copper OFC.

In terms of sound impression, it tends to be oriented toward letting you feel thickness and density, rather than simply making everything light and neat. Vocals are more likely to develop a clear core, and instruments such as guitars and pianos become easier to enjoy—not only their sonic contours, but also their decay and sense of air.

If you want that feeling that, when listening to your usual tracks, the sound rises firmly toward the front—and you want to feel the stage’s width even inside the car—this is a cable that you can easily consider for compatibility.

Sound isn’t determined by the cable alone

A speaker cable doesn’t produce the exact same sound in every car just because you replace it.

Depending on the speakers and amplifier you’re using, the combination with your factory audio, how the wiring is routed, and how the connection parts are handled, the final impression will change. The way you choose also depends on whether you prioritize sound thickness, seek a wider soundstage, or want vocals to sound natural.

For my part, I wouldn’t decide the cable first by itself. Instead, I would organize the parts you’re concerned about in your current sound and the sound you want to aim for next, then think about how to apply it. In some cases, reviewing the speaker mounting condition, the amplifier settings, and even fine-tuning the sound may help you get more satisfaction for the cost.

At LOGON, we make proposals by looking at both the car and the entire system

Even when using the same Grandio SP-1, the impression when it’s finished can differ depending on where you run the wiring, how you finish the connection parts, and how much you refine the sound after installation.

At LOGON, we don’t just recommend based on the product’s specs alone. We consider effective installation/processing for the necessary parts while confirming your vehicle’s specifications, your current system, the music you usually listen to, and your preferences in sound.

If you’d like to further “grow” the sound after replacing your speakers, or if you want to organize the sound of your entire system, let’s decide the direction together based on your current configuration. Including whether the Grandio SP-1 (5.0m) will suit your setup, we’ll guide you to ways to get closer to the sound you want—without forcing you to choose a product.

Main specifications / specs

【Basic information】
Product name: Grandio SP-1 (5.0m)
Brand: Zonotone
Type: Speaker cable
Length: 5.0m

【Conductor materials】
Ultra-high-purity 7N-class Cu
High-function pure copper wire HiFC
High-purity oxygen-free copper wire PCUHD
Modern tin-plated high-purity copper
High-purity oxygen-free copper OFC