How to Change a Speaker in a Fender Blues Jr Amplifier

How to change the speaker in a Fender Blues Jr

How to Change the Speaker in a Fender Blues Jr Amplifier

This video will show you how easy it is to swap a Fender Blues Junior III speaker.  The process is exactly the same for an older Fender Blues Jr Amplifier.  This guide works for all versions of the Fender Blues Jr.  It doesn’t matter which one you have, changing the speaker is fast and easy.

What tools do you need for the job?

  • You only need one tool for this job:  a Philips Head Screwdriver/Star Screwdriver (medium size)

How to Open the Fender Blues Jr Amplifier

Now before we get started I need to make this clear.  DO NOT put the screwdriver or any other metallic tools inside the amplifier head.  The result of this could cause serious injury.  The good news is we are taking the amp apart and the head is closed off so we should be all good!  Every single Fender Blues Jr speaker I have seen in my lifetime is rated at 8 ohms.  Make sure the replacement speaker is rated at 8 ohms as well.

  • Firstly unplug the amplifier.  Do not do this with the amplifier connected to the power outlet.
  • Secondly, make sure the speaker is disconnected from the jack.  You can find this on the right side of the amplifier underneath.
  • If you look at the side of the Fender Blues Junior there are two screws.
  • Keep the amp standing upright and remove the two side screws.  This will be key to doing this the right way the first time.
  • Next, unscrew one of the top screws.
  • At this point, you want to hold the back of the cabinet with one hand and then release the next screw.
  • Make sure you hold onto the amplifier chassis otherwise you might have an issue with it falling.   You can also do this bit with the amplifier face down.  It is up to you however is easier.
  • You should be able to now remove the entire head section of the amplifier out of the cabinet.

How to change the speaker.

  • At this point, take note of which way orientated the current speaker is actually seated in the cabinet.
  • Take note of the which terminals on the speaker are being used.  Red is usually + and Black is usually – (but double check)
  • Removing the speaker is easy.  Use the same screwdriver and release the 4 screws holding in the speaker in.
  • Once you have the screws out the speaker lifts easily out of the cabinet.
  • Place the new speaker inside the amplifier facing the same way the original one was
  • Reconnect the terminals and screw the new speaker in.
  • Please note: You don’t have to go too crazy with the tightness of the screws.  Just make sure the speaker is secure and you’re not overtightening anything.  This could lead to an eventually stripped thread.

If you need a visual guide fo this please see the video I made below.  It will cover how to change the speaker in a blues Junior no problems at all.

What is a good speaker upgrade for a Blues Junior?

There are so many great options for 12″ speakers that work great in a Blues Jr amplifier.  If you want the amplifier to be a lot louder and fatter sounding gives either the Eminence Texas Heat a look or the Eminence Swamp Thang.  If you don’t like either of them gives the Eminence Red White & Blues speaker a go.  Listen to as many speakers as you can before you make a decision.  My one word of advice is if you want the amp to be louder, find the speaker with the highest dB/sensitivity level.  This will make a huge difference over the stock speaker.  For those wondering, I didn’t keep the WGS ET-65 in the Blues Junior for very long.

I hope this helps and if you have any questions or comments please leave them below.