How to Recone a Subwoofer: When It's Worth Fixing vs. Replacing

A blown subwoofer does not always mean you need a new one. Reconing rebuilds your sub's worn parts for a fraction of the cost of a replacement. However, you must know that sometimes the solution is to recone, and sometimes it is to replace it completely.

Knowing how to recone a subwoofer, and when to skip it, saves you both money and a wasted afternoon. 

This guide walks you through everything you need to know to make a decision.

Is Your Subwoofer Actually Blown?

Before you spend a dollar, make sure the sub is the real problem. A system that cuts out is sometimes an amp or a wiring fault, not a dead driver. So check the sub itself first.

Here is how to tell if subwoofer is blown:

• Push the cone gently

Press evenly with both hands. A scratching sound means the voice coil is rubbing.

• Listen for distortion

A blown sub plays weak, fuzzy, or distorted bass instead of a clean note.

• Check for movement

No movement at all usually means a dead coil or a broken connection.

• Test with a multimeter

A healthy sub reads close to its rated ohms. A reading of zero or infinity confirms it is blown.

If the sub passes every test, your problem is elsewhere. If it fails, you have to make a choice. The good news is that many of these failures are fixable with subwoofer recone kits, which rebuild the exact parts that wear out.

What Goes Wrong Inside a Subwoofer?

A subwoofer is made of a few moving parts, and each one can fail. Knowing which part broke tells you what a repair involves.

The voice coil is the most common failure, since heat from a clipped signal cooks it first. A subwoofer voice coil replacement is the core of most recones. 

The cone, surround, and even subwoofer dust caps get replaced in the same rebuild. Knowing how to fix a blown subwoofer starts with assessing the parts properly.

What Is Reconing and How Does It Work?

Reconing means removing the worn parts from the motor and rebuilding the sub with new ones. The magnet and basket stay, and everything that moves gets replaced.

A recone kit includes the following:

• New cone

• Surround

• Voice coil

• Spider

• Dust cap

The old parts come off, the motor gets cleaned, and the new parts go on in careful alignment. Done right, a reconed sub performs like a brand-new one.

Nonetheless, the most important part is alignment. The voice coil has to sit perfectly centered in a narrow gap. Get that wrong and the sub rubs or fails again fast.

Is It Worth Reconing Your Subwoofer?

This is the real question, and the answer comes down to value. A recone has to beat the cost of simply buying new.

Here is when a recone makes sense:

• Premium or competition subs. A high-end driver is expensive to replace, so a recone saves real money.

• Discontinued models. If you cannot buy the sub anymore, reconing keeps it alive.

• Sentimental or matched setups. When replacing one sub would mismatch a pair, a recone keeps them even.

And here is when replacing wins:

• Cheap entry subs. If a new sub costs about the same as the kit, just replace it.

• Cracked or damaged basket. If the frame or magnet is damaged, a recone cannot fix it.

• No kit available. Some subs have no recone kit made for them.

When replacement is the smarter call, the full range of car subwoofers gives you a fresh driver with a full warranty.

Recone vs Replace: A Quick Decision Guide

Use this checklist for a fast answer on is it worth reconing a subwoofer or should you just replace it.

The subwoofer recone cost is usually a fraction of a premium sub’s price, which is what tips the decision toward fixing it. For budget drivers, that math flips.

Can You Recone It Yourself?

A recone is a doable home job, but only if you are patient and careful. The parts aren't hard to handle; however, the alignment must be precise.

Keep these in mind before you start:

• Alignment is everything. A coil even slightly off-center will rub and fail.

• Shimming takes patience. You use thin shims to center the coil while the glue sets.

• Glue needs curing time. Rushing the drying stage ruins the whole job.

A careful first-timer can pull it off, and the same basic skills apply to general car speaker repair. If you are unsure, though, a professional recone costs less than a botched one.

How to Avoid Blowing It Again

A recone is only worth it if the sub survives this time. Most blown subs die from the same few mistakes, and all of them are avoidable.

• Set your gain properly. Clipping from a maxed gain is the number one coil killer.

• Match your RMS. Feed the sub power in its rated range, not far above or below.

• Use a subsonic filter. It blocks the ultra-low notes that over-stress the cone.

• Build the right box. The wrong enclosure volume pushes the sub past its limits.

Diagnose First, Then Decide

A recone is a smart fix for the right sub and a waste on the wrong one. 

• Confirm the sub is actually blown

• Weigh the kit cost against a new driver

• Factor in whether you can do the work cleanly

This simple process points you to the right answer every time.

Not sure where your problem really lies? Run it through our free bass troubleshooter before you spend anything. You can also find a trusted installer near you through our installer finder.