I’ve been in the PA system business for over a decade. And one question I keep hearing from rental guys, bands, and wedding DJs is: “What’s the smallest line array that can actually cover a real outdoor gig?”
The short answer? A dual 4-inch line array with an 18-inch sub. Not a toy. Not a plastic Bluetooth speaker. A real professional 3-way system that fits in your car and sets up in ten minutes.
But let me be honest – not all dual 4 line array systems are created equal. And if you’re looking to buy in bulk or start your own brand, you need a factory that gets it. That’s where Lesound comes in.
What Most People Get Wrong About Small Line Arrays
I can’t tell you how many customers email us saying: *“I tried a cheap 4-inch array from another China supplier. It sounded thin and fell apart after three shows.”*
Yeah, I believe you. Because a real line array speaker factory doesn’ just glue drivers into plastic boxes. They design waveguides, tune crossovers, and match amplifiers.
The S18L424B system we build at Lesound is different. Let me show you why.
The Real Specs That Matter (And a Handy Table)
Forget marketing fluff. Here’s what actually impacts your gigs – and how we can customize every piece for your brand.
| Feature | Our Standard Spec | Why It Matters to You | What Lesound Can OEM For You |
|---|---|---|---|
| System type | Powered 3-way + 18" subwoofer | One box carries the whole PA – no separate amps | Add battery power or change to passive version |
| Amp power | 1400W Class-D (500W + 200W RMS) | Loud enough for 200+ people outdoors | Tune the limiter to protect your specific drivers |
| Max SPL | 121dB @1m | Cuts through wind and crowd noise | Higher SPL with upgraded drivers (extra cost) |
| Frequency | 50Hz – 20kHz | You get real kick drum punch, not just rumble | Extend low end to 45Hz with cabinet tuning |
| Coverage | 60° H x 90° V | Wide but controlled – less sound wasted to the sides | Narrow to 45° for long-throw or wider for dance floors |
| DSP | ±6dB EQ, echo, reverb, GT effects | No external mixer needed for small gigs | Custom presets (e.g., “Speech”, “Live Band”) saved by default |
| Bluetooth | TWS 5.0 with LCD MP3 player | Link two systems wirelessly – great for stereo | Change Bluetooth name to your brand |
| Inputs | Combo x2, 6.35mm x2, 3.5mm, USB-A x2 | Connect mics, guitars, phones, laptops | Add phantom power for condenser mics |
| Outputs | Speakon x1, 6.35mm x1 | Daisy-chain more subs or record the mix | Add XLR thru with ground lift |
| Sub cabinet | MDF, 18" driver with 80oz magnet | Deep bass without heavy weight (42kg) | Upgrade to birch plywood for touring |
| Line array cabinet | PP plastic + steel grille | Lightweight (4.2kg per box) – easy to pole-mount | Weather-resistant coating for beach weddings |
| Included | Pole, bracket, speaker cable | You don’t need to buy anything else | Custom cable length, stand color, flight case |
That table isn’t just specs – it’s your shopping list for a custom order. And yes, we do small MOQs.
What Customers Ask Us Every Single Day
I’ll save you time. Here are the five most common questions we get from people like you – and the real answers from our production floor.
1. “Can I get my logo on the grille and cabinet?”
Absolutely. We are a Speaker grill custom OEM with in-house laser cutting and screen printing. You send me a vector file, I send you a proof within 48 hours. Minimum order for custom grilles? 50 pieces. For just a logo sticker on the back? No MOQ at all.
2. “Do you make speaker cables and stands too?”
Yes. We are a Speaker cable China manufacturer and Speaker stands OEM supplier. The S18L424B already includes a 5-meter speakon cable and a steel pole. But if you need 10-meter cables with your brand’s color, or a crank-up stand with a wider base – done. We’ve done it for rental companies in Europe.
3. “Can you build a sound system for a record player? That’s weird, I know.”
Not weird at all. We get this request from vintage audio shops and DJs who spin vinyl. We offer Speaker for record player OEM – we add a phono preamp with RIAA EQ inside the subwoofer. So you plug a turntable directly in. No hum. No extra box. Just warm vinyl sound.
4. “How do I know your quality isn’t junk like other China factories?”
Fair question. We are a China PA speaker OEM with ISO9001 and CE certification. Every S18L424B runs a 24-hour burn-in test. We sweep impedance and measure SPL. You can hire SGS to inspect before shipping. And we give a 2-year warranty. If something fails, we ship you a replacement part – fast.
5. “What’s the real MOQ for a custom dual 4 line array?”
As a Dual 4 line array supplier, we keep it flexible:
- Color change + logo + grille: 20–50 units
- Full DSP tuning + Bluetooth name: 100 units
- Battery version or complete redesign: 200 units
- Sample custom unit (1-2 pcs): 15 working days, tooling fee refundable on first order.
Why Lesound? Because We Actually Build, Not Just Trade.
I’m not a sales rep reading a script. I’m an engineer who designs these systems. And I started Lesound because I got tired of seeing trading companies mark up cheap boxes and call them “professional.”
When you work with us – a Sound system ODM supplier – you get:
- Real factory pricing. No middleman. You pay for materials, assembly, and a fair profit.
- Full transparency. I’ll show you the BOM (bill of materials) if you sign an NDA.
- Fast prototyping. Need a different grille pattern? We’ll 3D print it in a week.
- Mixed containers. Order 100 line arrays + 200 speaker cables + 50 stands – we pack and ship together.
We also understand that your customers care about setup time. The S18L424B’s line array cabinets stack and lock with a simple pin. The sub has recessed handles and optional casters. One person can carry the whole system in two trips.
Three Real-Life Examples Where This System Shines
I’m not going to give you fake marketing stories. These are actual use cases from our customers.
Example 1 – A wedding DJ in Texas
He needed a system that fits in his Honda Civic but still covers 150 guests outdoors. He bought two S18L424B units (stereo pair). Uses the TWS Bluetooth for wireless linking. Sets up in 8 minutes. Says the 18” sub keeps people dancing without shaking the china off the tables.
Example 2 – A fitness instructor chain
They wanted a portable PA for outdoor yoga and bootcamps. Voice clarity was #1 priority. We customized the DSP with a “vocal boost” preset (3dB at 2.5kHz) and added a battery option. Now they run 6-hour classes with no power outlet.
Example 3 – A small rental company in Germany
They needed a 3-way line array that looks high-end but doesn’t cost a fortune. We did a custom black matte finish with their logo on the grille and a white back panel for visibility on dark stages. They’ve reordered three times.
Still Not Sure? Let’s Talk Details.
I don’t expect you to buy from a spec sheet. Sound is subjective. And every event has different needs.
That’s why I encourage you to email us with:
- How many units you’re thinking about (even 5-10 for a trial is fine)
- Any special requirements (battery, custom color, specific DSP presets)
- Your target price per system
We’ll reply within 24 hours with:
- A CAD drawing of your custom cabinet
- A demo video of the S18L424B playing music and speech
- A sample cost breakdown (no hidden fees)
And if you’re a Bluetooth speaker ODM China buyer looking for something completely different – like a retro radio with line array tech – we can do that too. We’re not just a Line array speaker factory; we’re a full audio product developer.
Final Word – Don’t Settle for Generic Speakers
You have a brand to build. A reputation to protect. And events to run without technical drama.
The dual 4-inch line array format is mature now. The technology works. But only if you buy from a factory that tests, tunes, and stands behind every unit.
At Lesound, we’ve shipped thousands of systems to over 30 countries. Our customers come back because we answer emails, fix problems, and never disappear after payment.
Ready to discuss your project?
Email: sales@lesound.com.cn
Or fill out the contact form on our website. Tell me you read this article – I’ll prioritize your message.
Let’s build something that sounds as good as it looks.
Lesound – Your OEM partner for professional audio.
Post time: Apr-07-2026