How to Replace a Speaker in a Guitar Amplifier

When a guitar amplifier speaker blows, not only does it sound bad, but it can also damage the guitar amplifier. Speaker impedance, or load, changes when the amplifier is damaged, and this can change the amount of electricity running through the guitar amplifier. Speaker replacement is fairly easy, though, once a replacement has been found. Read on to learn how to replace a speaker in a guitar amplifier.

Difficulty: Moderate

Instructions

Things You'll Need:

• Proper Replacement Speaker
• Socket Driver
• Screwdriver
• Pliers
• Marker

1. Unplug the amplifier from guitar and electrical socket. Remove any cables and accessories stored in the back of the amplifier. Place it face down on a stable surface to allow easy access through the back.

2. Disconnect the wires going to the bad speaker. Pull the connector, not the wire, and use pliers if necessary. If the wires are not color-coded (typically red is positive and black is negative), use a marker to identify where they should mount. This is crucial in an amp with multiple speakers. Mis-wiring will put the speakers out of phase.

3. Use a screwdriver to remove the screws holding in the speaker. If the speaker is held on with nuts, remove them with a socket driver or pliers.

4. Place the new speaker in position. Replace screws, or nuts, in opposite pairs (for example, replace the screw at the noon position, then the 6 o'clock position) but do not tighten.

5. Tighten screws only after all have been replaced. Reconnect the wires running to the guitar amplifier speaker. Return the amp to an upright position and replace any gear stored in back.

6. Plug the amplifier into the guitar and wall.

Tips & Warnings

• Keep track of removed screws or nuts by attaching them to the large magnet of the replacement speaker.