Tune-o-matic Guitar Bridge Adjustment: Lowering The Action

This article was originally featured on doughnutmag.com and has been used with permission.

The Tune-o-matic bridge (what a great 50s name) is common on Gibson and Epiphone guitars, especially shapes such as the Les Paul and SG, usually with a pretty solid stopbar sitting just behind it.

Lowering action on a Tune-o-matic guitar bridge

To Adjust the guitar bridge, all you need is a flat head screwdriver and an accurate measuring tool. A metal ruler with millimeter markings is ideal.

Tune your guitar to standard tuning and place the the ruler on the twelfth fret, keeping it neatly above the fret itself, not the fretboard. Measure around the third and fifth to get an idea of the overall height.

Adjusting The Truss Rod

Before lowering the bridge, you may want to adjust the truss rod slightly. This can done quite easily with a hex key, but is something that most people feel uncomfortable doing themselves.

Quarter turns are all you need to help shape the flex of the neck. Clockwise will tighten the truss rod (pull the headstock back), anti-clockwise will loosen the truss rod and allow the neck to slope forwards. We’ll save adjusting the saddle and intonation for another day…

Adjusting The Tune-o-matic Bridge

If you’ve got your truss road to where you need it then it’s time to lower that action. You could use the rings on the bottom of the Tuno-o-matic style bridge, but a screwdriver is easier and is recommended for precision.

Clockwise to lower action, anti-clockwise to raise it. Start with high string (the far nut). Measure your action, adjust, play and re-tune a few times until you are in the 2mm area and happy that there isn’t too much fret buzz. The repeat on the low string (the closer nut if you’re in the playing position).

“Vital to get the neck right first. A slight curve is desired if you want to get the action low and not have it buzz. Put a capo at the first fret (like for an F) and then hold a string after the last fret. You should be able to push the string down in the middle a distance somewhere between a credit card and a business card. If there’s no gap, loosen the truss rod. If there is too big a gap then tighten. Once this is right you can tweak the bridge height.” – geektard

That’s it!

Fixing Toontrack Superior Drummer installation problem on Mac (“Wrong DVD inserted”)

If you too have had this problem with Toontrack installations, I hope I can help by giving this information which i struggled to find.

Wrong DVD inserted

“Wrong DVD inserted. Could not parse the installer file. Please insert the first disk of your SDK library”

I did a bunch of research to figure out what was going on with my SUperior Drummer 2 installations, and couldn’t find much beyond a forum post that was locked because I didn’t have Superior Drummer 3.

  Superior Drummer 3 is required to read and reply to this thread.

“Superior Drummer 3 is required to read and reply to this thread.”

Side note: Locking down this content is very short-sighted by Toontrack, in my opinion. Firstly, it presents a terrible user experience. I have spent money with Toontrack not so long ago, and expect to be able to access their forums, despite what products of theirs I own. This isn’t even an issue specific to Superior Drummer 3.

Secondly, from a content marketing perspective, having these replies locked behind what essentially amounts to a pay-wall if very bad for their organic search marketing. Rant over.

Fixing the “Wrong DVD inserted” installation problem

I raised a ticket with Toontrack support, and waited a few days for a response before being told the reason for the problem, and the solution (something that shoudl be clearly published on their website).

“Currently with Catalina, the SD2.0 and SDX library cannot be installed from a download location that is anywhere within the your internal Downloads, Desktop or Documents folders or from an external drive.” – Toontrack support

Toontrack product manager: change download location

Following their steps, I was able to get the installation running and the studio back online shortly after starting the process:

  1. Open Tootrack product manager
  2. Open the preferences
  3. Change download location
  4. Click move downloads
  5. Complete your installations
  6. Click ‘Clean up’ to delete all installations files

Toontrack product manager disk clean up.png