July 11th, 2010 | 
Author: 
Learn how to correct crossover when changing the tubes on a vacuum tube amplifier in this free video.
Expert: Jeff Naylor
Contact: www.Mtroniks.com
Bio: Jeff Naylor is the owner and operator of Mtroniks Engineering in Mesa, Arizona.
Filmmaker: Eric George
Duration : 0:2:7
Posted in 
Tags:
@melonheed3 i just …
@melonheed3 i just get the shop to do it now lol only 20quid so its a bargin for the amount of time this needs done.
@lantyboy not …
@lantyboy not that this helps too much but, i know there is a way to bias your amp using a voltage meter. still, another peice of equipment but i’d bet my bean bag that it’s cheaper than buying a ociloscope.
If replacing tubes …
If replacing tubes is it nessasery to bias the tube’s every time or can the tube simply be replaced.?
Not all tube amps …
Not all tube amps have an adjustable bias pot. Many older amps have a resistor that must be located in the circuit. Then the tech needs to figure out the correct value for the installed tubes.
It is best to have a tech set up the bias on a new set of tubes if you don’t know how to do it. Every set of tubes will bias at a different point – even groove tubes that have a bias number. You may be able to get by without doing a bias job, but your amp may run too hot or too cold.
So does this mean i …
So does this mean i cant do this myself??? how the am i ment to bias them with out all that gear???
that is a sine wave
that is a sine wave
Would be quite …
Would be quite interesting hearing what crossover distortion sounds like
180 would just …
180 would just invert the wave, it would need pi/2n to match the zero crossings
well changing the …
well changing the period would just change the frequency ( period = 1/frequency ), a phase shift would change the initial displacement so the difference between a sine wave and cosine wave is 90 degrees making them equal. In the electronics world most people just refer to any oscillating wave as a sine wave.
u mean same …
u mean same amplitude and wavelength different period
there both the same …
there both the same wave just a phase shift of pi/2
Yea cuz there are …
Yea cuz there are local tube amp shops all over the place.
Because it contains …
Because it contains high levels of suck
that is a cosine …
that is a cosine wave not sine
Oh shit. I cant …
Oh shit. I cant find my sine wave generator. I think I left it in my other pants.