This ”Tunnel” Determines the Sound Quality of Car Speakers! — Jiuju Speaker Automated Assembly Line

Do you think a car speaker is good enough just because it ”beeps”?

In fact, its sound quality, lifespan, and safety are all ”determined” by a precision tunnel before it leaves the factory.

This tunnel is part of the Jiuju automated assembly lineFully Automatic Tunnel Baking LineThe voice coil, diaphragm, and bonding layers inside the speaker must undergo curing in an oven with precisely controlled temperature and a uniform conveyor belt speed to meet the specified acoustic parameters. A one-degree deviation in temperature can compromise sound quality by a full grade, while a one-second difference in time can create potential risks regarding bonding strength.

Jiuju’s automatic oven features independent temperature control across multiple zones, PID closed-loop regulation, and uniform airflow distribution throughout the tunnel, ensuring that every speaker is cured under exactly the same thermal profile—which is the fundamental guarantee of speaker consistency, durability, and safety.

It’s not the speaker that determines the sound; it’s the craftsmanship that determines the speaker.

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*Still worried about recruitment challenges and inconsistent quality? Jiuju has specialized in speaker automation for 16 years and has been chosen by over 2,000 customers. Call 134-2897-6919 now to schedule a free consultation, or[Schedule a tour of our Shenzhen/Dongguan factory]... and see the true efficiency of automated production lines for yourself!*