Enclosure for an Electric Guitar Amplifier




This is an electric guitar head made of an old Audiovox combo amplifier, it is easy to carry and use with any speaker cabinet.

Step 1:

This is a 1x12 combo guitar amp, one 12" speaker, but i'm going to use the amplifier part only.

Step 2:

The stuff i used:

Plywood(1/2" birch)
Vinyl and felt
3M vinyl adhesive
Liquid nails adhesive
Spray paint
1/4 phone jack

Step 3:


jig saw
Hand saw
Staple gun
Screw driver

Step 4:

Cut and glued plywood, top and bottom 4" wider than the amp
Sides are 9" top to bottom and 9" back to front
Gluing all this together form a rectangular box with
open back and open front, i used 3/4" by 3/4" wood to joint
all four angles together and to attach the back and front covers.

Step 5:

Mount the amp in to the enclosure to drill the holes for the screws.

Step 6:

Here is the enclosure painted in the inside and
with the vinyl outside. To glue the vinyl cut it 1/2" wider than
the enclosure to fold it thru the inside by the edges use the staples to keep it firm
Spray the 3M adhesive all over the vinyl and the wood
wait for about 4 minutes and place the the enclosure on top
of the vinyl by the very end and start wrapping the enclosure up
make sure you do it evenly.

Step 7:

I cut the original power cord and i used a jack to connect the power in.
The audio out was going straight to the speaker so now is gong to the
1/4 phone jack and from here goes to any speaker cabinet.

Step 8:

Front cover with vinyl and the grill.

Step 9:

The back cover is the same shape than the front just without the grill part
the metal plate is use in construction for electrical purpose, the power jack is
from an old printer.

Step 10:

This is the finish product (front view)

Step 11:

Finish top view

Step 12:

Here is with the speaker cabinet....that i built too.



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    19 Discussions


    3 years ago

    Did you do an Instructable for the speaker cab that you referenced at the end? If so, where would I find it?


    3 years ago

    Very nice Idea for those old amps that have road rash and gouges. The bottom speaker could accomadate any speaker cab with the right ohm match.


    3 years ago

    Very nice...good job


    7 years ago on Introduction

    how does it connect to speakers? I want to split my combo ampbut the only thing keeping the head and cab together is two wires in the bottom of the head. (Rocktron Rampage Bass 20)


    9 years ago on Step 10

    thanx man! I was thinking about converting my Rocktron Replitone 212 into a head and now you've cnvinced me to do it! Great job!

    undergroundDIY Dave

    Reply 9 years ago on Introduction

    i got the corners from 2 old PA speakers that someone dumped, but im sure you can get them in internet go to mojo musical supply.


    9 years ago on Introduction

    I've got this exact amp, It's an old Univox solid state from the seventies. I don't think they're particularly worth any money, I bartered for mine at a local pawn shop for like 50 bucks. Really killer amp. I like to crank the tone up to about one a clock and toss my MXR distortion + through it. Killer overdrive. Mine was all original. I like the different inputs too. The organ input is really flat and clean, and the mic one is a little trebley, but the guitar one can sound nice and fat with a little tweaking. That tremelo is crazy on it too if you crank em both up it sounds like a flying saucer. Cool amp. I like your mod, but I don't have the wood working skills to do something like this. Hope they're not worth any cash or you'll be regretting this mod. haha. :P


    I got the grill at home depot this is gutter guards, use to keep leaves and debris out of gutters......the best..... it is so cheap .


    9 years ago on Introduction

    Nice instructable you've got there, I especially like how your vinyl application came out. Was wondering, where did you get the corners you used on the finished product??

    1 reply

    Reply 9 years ago on Introduction

    First of all thank you for your comment., i got the corners from 2 old PA speakers that someone dumped, but im sure you can get them in internet go to mojo musical supply.


    9 years ago on Step 5

    I like this man. I was thinking of making my Crate Flexwave 212 combo into a head, and this helps out greatly. Thanks.