📥 Download the Quick Reference Chart
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👉 [Click here to download the full 4x Subwoofer + 1 Amp Match Chart (PDF)]
Powering Four Subwoofers with One Amp? Start Here.
Running four subwoofers on a single amplifier is the go-to setup for audio veterans chasing serious SPL and full-vehicle bass coverage. But stacking subs means stacking responsibility—if you don’t match the amp right, you risk poor performance or blown gear.
Let’s walk through how to get it right.
What Makes the Right Match?
When pairing four subwoofers to a single amplifier, here’s what you must consider:
| Factor | Why It Matters |
|---|---|
| Combined RMS Power | Your amp should deliver the total RMS across all four subs. |
| Final Impedance (Ohm) | Determines how much power your amp can safely deliver. |
| Wiring Configuration | Series, parallel, or series-parallel wiring changes your final impedance load. |
| Amp Class & Stability | Use a monoblock Class D amp that can handle the final Ohm load. |
🔧 Quick Reference: 4 Subwoofer Wiring Examples
Here are common final Ohm loads depending on your subwoofer coil configuration and wiring:
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4x SVC 4 Ohm subs → Parallel = 1 Ohm
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4x DVC 4 Ohm subs → Series-Parallel = 2 Ohm
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4x DVC 2 Ohm subs → Series-Parallel = 1 Ohm
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4x DVC 1 Ohm subs → Series-Parallel = 0.5 Ohm (Only for ultra-high-performance amps!)
📌 Important: Make sure your amp is stable at the final load. For most setups, aim for 1 or 2 Ohm final load.
✅ Best Practices for 4-Sub Setups
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Match RMS rating and impedance on all four subs.
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Use heavy-gauge wire and a high-output alternator if needed—this setup draws serious current.
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Keep wiring symmetrical for even power distribution.
❓ FAQs
Q: Can I run different sub models together?
A: No—always match impedance, RMS, and model. Mismatched subs lead to unbalanced sound and can damage your equipment.
Q: Is 1 amp enough for 4 subs?
A: Yes—if it delivers the combined RMS at the correct impedance. Check amp specs for rated power at 1 or 2 Ohm loads.
Q: Should I use a capacitor or upgraded electrical system?
A: For high-wattage builds, yes. It helps prevent voltage drops and protects your amp.
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📞 Need a Custom Recommendation?
Our experts can help you match subs, amps, wiring kits, and enclosures.
Reach out at hello@americanbassusa.com or call 440-248-5858 for personalized support.
