If you sell speakers on Amazon or run a small rental business, you’ve probably asked yourself this more than once: Which China factory actually builds a decent 3 way line array PA loudspeaker custom solution that won’t fall apart after three gigs?
I’m from audfine. I’ve been on the manufacturing side for years. And honestly? Most factories just want to move boxes. We’re not that. Let me show you what real buyers ask us before they place an order – and how our VS4000 answers those questions.
The Questions We Get Every Single Week
“Will a 4 inches line array really cover 200 people outside?”
Yes. The VS4000 hits 121dB max SPL. It comes with one active 15” sub, one passive 15” sub, and eight 4” line array speakers. We’ve tested this at beach parties. It works.
“Can I put my own logo on it? Change the grille color?”
Absolutely. As a 4 inches line array manufacturer China, audfine does full ODM – custom grille, laser logo, even FBA-ready packaging. No weird minimums for small changes.
“How reliable is the amp? I’ve had bad luck with cheap Class-D.”
The VS4000 uses a real Class-D digital amp – 3×300W RMS (3×600W peak). Thermal protection, RMS protection, and a limiter. We burn in every single unit for 48 hours. No random shutdowns.
“Does the Bluetooth actually work from 20 meters away?”
Yes – TWS Bluetooth 5.0 with MP3 and LCD screen. Also has USB playback. Pair two systems for stereo. Works fine outdoors.
“How do I connect my mixer and extra subs?”
Inputs: two combo jacks (XLR/TRS), two 6.35mm jacks, RCA L/R, USB-A. Outputs: Speakon for the passive sub, plus RCA and 6.35mm. Very straightforward.
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Why People Keep Coming Back to audfine
We are a PA speaker sound system OEM factory that actually engineers things. Our 3 way line array OEM ODM China service means you can tweak crossover points (120Hz and 2.5kHz are standard), change EQ presets, or remove the MP3 player to save cost – just ask.
We’re also a PA speaker China factory for Amazon sellers. CE, FCC, ROHS? Yes. FBA-ready packaging? Yes. Helped over 30 brands launch line array products on Amazon US, DE, and UK.
Quick Specs – What You Actually Care About
| Feature | VS4000 Value |
|---|---|
| Frequency response | 55Hz – 20kHz |
| Max SPL | 121dB @1m |
| Power | 3×300W RMS, 3×600W Peak |
| Crossover points | 120Hz / 2.5kHz |
| Coverage | 60°x90° (HxV) |
| Sub driver | 15”, 2.5” v.c., 50oz ferrite |
| Line array drivers | 4” fullrange + 25mm HF |
| Box materials | MDF sub, PP line array, steel grille |
| Power | AC 110V~220V |
Ready to Talk Custom?
Stop hunting for a sound system custom supplier China that only offers white‑label junk. Contact audfine directly. Tell us your target quantity, your market, and any custom requests (color, logo, packaging). We reply within 24 hours. Samples available.
📧 Email: sales@audfine.com
🌐 Website: audfine.com
audfine – Your 3 way line array PA loudspeaker factory for real OEM/ODM partnerships. No games, no ghosting.
