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sound, tone, volume, cutting out, muffled, thin sound

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So many users of the line 6 spider iv amps have had issues with the tones going thin or tinny, or muffled and low volume etc.

I have a line 6 spider iv 120 and had the same thing start with mine.  Well mine was what I call a cascading issue that led

me to find what this issue is probably in almost all of your problems too.   Seems the main board or brain has a few 

components used in circuit boards called voltage regulators. basically is drops the voltage down to what it needs to be

and then the extra basically causes heat or is the by product which is correct and normal.  the regulators have little metal

tabs connected as a heat radiator to get rid of heat.......well the one regulator , which is one right beside the plug from the

amp supply is the one that gets a little to hot and has a built in kind of thermal safety and kicks out or doesnt run like it 

should and that is when the sounds get weird, cut out, reset amp, etc.    mine caused one of the solder joints on its 3 connections

that was weak to start to crack and then when it got warmer it really kicked in to awful mode.

so the solution?   it is simple and cheap like 47 cents..... they make a heat radiator or fin that attaches to it with a clip, screw,

or a thermal glue that is nothing more than an aluminum  piece with fingers that is about size of my thumb and now not

one issue ever!!!!   you can get them on ebay, amazon, etc.  there are 2 voltage regulators that are side by side on board

and have metal tab, 3 legs connected to board.  easy to just attach them and heat issue is gone!! hope this helps someone.

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On 6/29/2020 at 8:45 PM, Kaypri said:

This shouldn't even be an issue. 

........Is exactly right.  A 47 cent fix for the consumer that spent a couple hundred (depending on what model) of their hard earned money? I have the same issue. Now, for me that solution is an easy fix. Others maybe not. Or maybe don’t feel like opening up an expensive piece of equipment and voiding their warranty or worse. This post is over 2 years old and that “cheap, easy” fix needs to be fixed. (Line 6) 

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The unit needs to be serviced by an authorized tech who is familiar with the product and has access to service resources.

Voltage pull down on a regulator is a symptom of something else, it is not the cause. Needs to be troubleshooted and serviced

by an authorized tech who knows the product.


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