【ESB 4000 4.75 Paper-Cone Midrange | Car Audio Speakers That Balance Power and Finesse】

I want to replace the factory speakers and bring the vocals and instruments a little more forward. I also want the sound to be harder to distort even when the volume is turned up, and to be comfortable to listen to for long periods without fatigue.

ESB 4000 4.75 is a car-audio speaker designed to reproduce powerful mid-low frequencies and delicate high frequencies in a well-balanced way. The 16cm mid-bass uses a paper cone made from long-fiber pulp with special processing, providing light weight, rigidity, and a moderate level of internal damping.

The sound starts up naturally, reproducing vocal thickness and midrange instruments such as guitar and piano with density. Rather than emphasizing only the bass, it firmly supports the band that serves as the center of the front speakers. With a large-diameter voice coil and a vented structure, the design helps maintain power even at higher volumes.

For the highs, the 28mm soft-dome tweeter uses a silk-dome diaphragm with polymer laminate. While suppressing the kind of hardness that can feel piercing to the ears, it renders vocal breath and the fine shimmer of cymbals in a natural way. Since it supports multiple mounting styles, such as flush and surface-mount, you can consider the installation method to match your vehicle’s available space and your preferred finish.

Speakers Whose Sound Impression Changes with the Mounting Method

With this class of speakers, simply swapping the units does not always let you realize their full performance.

There are aspects you may want to check for each vehicle—such as the door’s strength, the construction of the baffle, the condition of the speaker’s rear side, interference with the door panel lining, and the tweeter’s orientation. If the mounting position or fixing method isn’t right, you may not fully take advantage of the speaker’s sound density and response.

At LOGON, we organize the approach together while confirming the vehicle model, the factory system, the music you usually listen to, and your volume preferences—whether to proceed with the speakers alone, or whether to include treatments for the baffles and the doors, plus the amplifier and DSP.

Depending on the direction you’re aiming for—everything from “I want to hear it more clearly than the factory setup” to “I want a sound that still has plenty of headroom even when I turn the volume up”—the recommended installation content will change. If it were me, I would first look at the vehicle’s condition and how you use it, and then separate what deserves spending from what doesn’t need to be added unnecessarily.

For anyone who wants to enjoy their everyday music a little more realistically and comfortably. We’ll propose a mounting method that leverages the strengths of the ESB 4000 4.75, tailored to the conditions of your specific vehicle.

Main Specifications / Specs

【Basic Information】
Product name: ESB 4000 4.75
Type: Car audio speaker
Configuration: 16cm mid-bass / 28mm soft-dome tweeter

【Mid-bass】
Unit: 165mm paper cone
Diaphragm: Special-processing / long-fiber pulp
Frequency response: 50Hz to 6.0kHz
Sensitivity: 89.5dB
Impedance: 4Ω
Max input: 300W
Lowest resonance frequency (Fs): 57.3Hz
Magnet: Y35 ferrite
Baffle cutout dimensions: 143mm
Frame outer diameter: 165mm
Outer diameter with grille installed: 170mm
Mounting depth: 67mm
Connection terminals: Both plus and minus terminals use 250 Faston

【Tweeter】
Size: 28mm
Diaphragm: Silk dome with polymer laminate (Sonatex™)
Magnet: N-52 neodymium
Voice coil: Vented voice coil made from copper-coated aluminum
Mounting: CNC-machined aluminum flush mount / plastic flush mount / adapter mount / surface mount

• Whether installation is possible and whether machining is required depends on the vehicle model, the specifications of the factory speakers, and the available mounting space.
• While checking the actual vehicle, we’ll guide you with installation methods that make the most of the speakers’ performance.