UMII-18 requires a custom woofer cutout in all our 18" cabs. Please contact us if you intend to use this woofer!

Assembly Instructions & Builder's Guide

MartySub Roundover Series Assembly Instructions
MartySub Roundover Series are an "Intermediate Level" build.  Assembly requires the use of clamps and other intermediate level techniques.  If you have experience with clamping panels, then the build is actually quite easy, so long as you take your time and follow the instructions precisely. For additional finishing items, such as the Speakon connector and/or terminal cup, see the MartySub Builder's Guide below.

MartySub Roundover Series Assembly Instructions

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Devastator Horn & G-Sub Assembly Instructions
The Devastator Horn and the Devastator-15 "G-SUB" are "Intermediate Level" builds.  The instructions are not as fully developed as for the MartySub and the build process requires the use of clamps and other intermediate level techniques.  If you have experience with clamping panels, then the build is actually quite easy, so long as you take your time and follow the instructions precisely. For additional finishing items, such as the Speakon connector and/or terminal cup, see the MartySub Builder's Guide below.

Devastator Assembly Instructions Devastator-15

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Behind the Screen "BTS" Assembly Instructions
BTS cabs are an "Intermediate Level" build.  The instructions are not as fully developed as for the MartySub and the build process requires the use of clamps and other intermediate level techniques.  If you have experience with clamping panels, then the build is actually quite easy, so long as you take your time and follow the instructions precisely. For additional finishing items, such as the Speakon connector and/or terminal cup, see the MartySub Builder's Guide below.

BTS Assembly Instructions

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Evolution Series Assembly Instructions - Ported cabs
Evolution Series cabs are an "Intermediate Level" build.  The instructions are not as fully developed as for the MartySub and the build process requires the use of clamps and other intermediate level techniques.  If you have experience with clamping panels, then the build is actually quite easy, so long as you take your time and follow the instructions precisely. For additional finishing items, such as the Speakon connector and/or terminal cup, see the MartySub Builder's Guide below.

Evolution Series Ported Assembly Instructions

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Evolution Series Assembly Instructions - Sealed cabs
Evolution Series cabs are an "Intermediate Level" build.  The instructions are not as fully developed as for the MartySub and the build process requires the use of clamps and other intermediate level techniques.  If you have experience with clamping panels, then the build is actually quite easy, so long as you take your time and follow the instructions precisely. For additional finishing items, such as the Speakon connector and/or terminal cup, see the MartySub Builder's Guide below.

Evolution Series Sealed Assembly Instructions

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Duratex Instructions
Duratex is an alternative to paint that provides a more durable finish. It is available in a variety of formulas (spray, roller) and colors (black, white). It can be sprayed-on for a smooth, slightly textured look or rolled-on for a more highly textured look. Be sure to follow the manufacturer's instructions for best results.

Duratex Instructions

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OLDER FILES: Step-by-Step Assembly Instructions for Classic MartySubs
Step-by-step Assembly Instructions include pictures of how the panels go together as well as several build tips.  No complicated tools are required for a MartySub build.

The Shopping Checklist (Builder's Guide) includes recommendations for all the supplies that you will need to complete your MartySub (such as the terminal cup, driver mounting screws, glue, etc.).  

MartySub by GSG Assembly Instructions    MartySub by GSG Shopping Checklist

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