Quick Picks: How to Correct Crossover Distortion on a...
 
Sign In Sign Up — It's Free!

How to Correct Crossover Distortion on a Tube Amp

Viewing videos requires the latest version of Adobe's Flash Player.
Get the latest Flash player.
Showing 1-5

Part of the video series: Changing Tubes on Vacuum Tube Amplifiers

left_arrow right_arrow
Add to My Playlist What is a playlist?

Summary: Learn how to correct crossover when changing the tubes on a vacuum tube amplifier in this free video.

Views: 1,285 | Tags: repair, change, amplifier, tube, tubes, repairs, amp, vacuum, circuits, amplifiers, musical equipment, tube amps

Get the latest Flash player.
Email Video Add to Favorites
About the Expert
Contact: Mtroniks.com

Jeff Naylor Jeff Naylor is the owner and operator of Mtroniks Engineering in Mesa, Arizona. Mtroniks has been in business for over twenty-five years, specializing in elec... read more

Hide Comments

Conversations About This Video

  • Comments
    (0 comments)
  • Questions & Answers
    (0 questions) (0 answers)
Be the first to comment on this video.
Have a question about this video topic? Ask our community members and let them share their knowledge with you!
Ask A Question

Video Transcript

How to Correct Crossover Distortion on a Tube Amp

Hello, this is Jeff Naylor from Mtroniks Engineering in Mesa, Arizona for Expert Village. To being this process we plug in our sine wave generator to the input of the amp. We plug in our dummy load to the output of the amp. And we plug our oscilloscope into our dummy load. We now turn the amp on and find our maximum gain before distortion. As you can see as I go up in gain, we have a nice looking sine wave here. But if I go too far, the shape changes. I want to back this off until this is round again. Symmetrical. This point with our symmetrical sine wave is now going to be our point of maximum clean output power. When you're using a clean channel on your amp, your goal is to get the sound that's coming out of your guitar to be the same as what's coming out of your speakers. Crossover distortion is extra unwanted sound. In this waveform on the oscilloscope we see a little notch here between the positive and negative waveforms. This is crossover distortion, which occurs on a really cold bias. Now as I turn the bias adjustment pot on the amp clockwise, this distortion will go away, giving us a cleaner signal with no crossover distortion. Thanks for watching this video on how to replace your tubes and bias your amp. Remember safety first, always unplug your amp before working on any part of it, and always buys decent matched tubes. The tubes are the lifeblood of your amp. Proper maintenance and learning how to install your own tubes and bias can save you a lot of money and a lot of grief. But if you do have more advanced problems with your amp make sure to take it to your local tube amp shop. Thanks again for watching our video.

Watch these related videos

Miscellaneous Music Ads

Community Members who...

  • Favorited this Video
  • Rated This Video
Read these related articles
See more articles

Top Tags

amps audio band banjo bending bluegrass books children childrens activities chord chords circuit circuit bending crafts diy drums electronic engineering games guitar hip history homemade hop instrument instruments is kids mijam musical musical instruments musiclessons notes pa performance play playing rap rhythm rock singing sk-1 sound strings theory tools toys tube voice what
Check out what people are watching now
left_arrow right_arrow