【40 Series Alphard/Vellfire JBL OEM A-Pillar Tweeter Installation】

For those with a JBL-equipped 40-series Alphard/Vellfire who want to replace the tweeters without changing the feel of the interior.

In this installation, we use the** OEM A-pillar adopted for the JBL specification as the base**, and custom-fabricate an aftermarket tweeter to install it. Because we do not use add-on panels or conspicuous mounts, the finished result maintains the original OEM look and atmosphere. Even when you open the door, it’s less likely to give the impression that only the tweeters were added later.

“I don’t want to ruin the OEM interior design. But I want the sound to be a bit better.”

If you’re looking for a way to enjoy the change in sound without changing the look, we believe this is a great match.

Align the sound cohesion while keeping the OEM character

The way a tweeter sounds changes depending on the mounting position, angle, and fixing method. Rather than simply embedding the speaker, we custom-fabricate each vehicle’s setup, checking the orientation and even the depth inside the cabin.

While tuning so that vocals and the high-frequency spread reach you naturally from the front, we also make sure it blends with the design of the OEM JBL A-pillar.

Because the fabrication details vary depending on the brand and size of the aftermarket tweeter, even if you already know which speakers you want to use, we will review the actual vehicle and the parts before deciding the installation method. If it were me, I would choose a form that suits the entire vehicle—not only the sound, but also the finish and future ease of use.

Made one-by-one to match the specific vehicle

Even among the same 40-series Alphard/Vellfire, the appropriate fabrication method varies depending on the tweeter you choose, the speakers you combine, and your preferences for sound.

At LOGON, while also confirming the combination with the OEM system and the overall balance of the speakers, we adjust the mounting method, angle, and depth. It’s not just “install and done.” After the installation, we check the sound inside the actual cabin, and when needed, we finish the work including overall adjustments.

You want the exterior to remain OEM, but the sound impression to change clearly. If that’s your goal, please consult with us about your vehicle and the tweeter you want to use. Let’s not force a decision—let’s sort through the best approach for your current system together.