【GZUC 165.3SQ-ACT｜Separate 3-Way Speakers for Pursuing Sound Quality】

In your car, you want to enjoy the vocal placement and even the fine nuances of instruments a bit more clearly. You’d like to step up from the factory speakers, but simply turning up the volume isn’t enough.

GZUC 165.3SQ-ACT is a 16.5cm separate 3-way component speaker system that reproduces sound by dividing the frequency bands among the woofer, midrange, and tweeter.

The woofer uses a black anodized aluminum cone. It handles reproduction from the low end to the lower midrange, firmly supporting the foundation of your music. The midrange features the newly released silk dome midrange unit “GZUM55SQ”, while the high end is paired with a silk dome tweeter.

The key point of this 3-way design is that, thanks to the way it splits responsibilities across frequency bands, the midrange—such as vocals, guitar, and piano—can be entrusted to the woofer without strain. Even with songs you always listen to, the overlapping sounds are organized, making it easier to follow vocal expressions and the positional relationships of instruments.

This model is a passive-less specification, so you’ll need to prepare an additional crossover network. The final impression can vary greatly depending on the overall system configuration including an amplifier and DSP, the mounting positions of each unit, and the door-side base and vibration-damping treatments.

If it were me, I wouldn’t decide based on the speaker alone. I’d check your current navigation unit and amplifier, the arrangement of the units inside the vehicle, and the music you normally listen to—then decide on the combination. With a 3-way setup, I’d want each unit to do its job properly and deliver sound that connects comfortably across the entire cabin.

Because it is also compatible with the tweeter pod “GZTH 25-28B”, it offers broader options for mounting methods. However, whether and how it can be installed, and what modifications may be required, will depend on the vehicle model and your current specifications. If you’re interested in the GZUC 165.3SQ-ACT, let’s sort out a sensible, no-stress configuration together based on your vehicle model, system, and budget.

Main Specifications / Specs

【Basic Information】
Product name: GZUC 165.3SQ-ACT
Type: Separate 3-way component speaker
Specification: Passive-less model
Size: 16.5cm

【Configuration】
Woofer: Black anodized aluminum cone
Midrange: Silk dome “GZUM55SQ”
Tweeter: Silk dome
Passive crossover: Sold separately
Compatible tweeter pod: GZTH 25-28B

【Performance】
Maximum input: 230W
Rated input: 140W
Nominal impedance: 4Ω
Frequency response: 40Hz～25kHz
Sensitivity: 89dB

【Mounting Dimensions】
Woofer cutout diameter: 144mm
Woofer mounting depth: 71mm
Midrange cutout diameter: 69mm
Midrange mounting depth: 33mm
Tweeter mount: Flush

【Grille】
Size: 180mm (W) × 21mm (H)