My A/B Rig!

[Littlewyan]

Only listened to the first part of the clip as my internet is shocking here at the moment but your clean tones through the amp do sound amazing. What is the cranked tone like?

[fusionbear]

Only listened to the first part of the clip as my internet is shocking here at the moment but your clean tones through the amp do sound amazing. What is the cranked tone like?

Here you go:

https://www.youtube.com/watch?v=T-kqmXycNCQ

[Richie]

Listened to a lot of the different amps.. very nice..

[Littlewyan]

Sounds awesome. Takes the wah pedal so well.

[fusionbear]

So I cleaned up and added the things you guys recommended. I rewired the bias so that the wiper goes to ground. Instead of 220K's, I used 510K's on the first stage of filter caps and 470k's on the screen filter caps. This is my Igor amp, so it isn't as clean as some of my other builds. Also, I fused the B+ coming right from the diodes. Also, I figured out that this amp does have the bias feed of 60V, but it wasn't enough to feed the KT88's, hence the feed like a traditional JTM 45/100. The last thing I forgot to mention is that I used a 150k on the cathode follower plate. I will redraw the schematic and repost later. Thanks!

He ain't pretty, but sounds beautiful.... Behold! Igor lives again!


[IMG:640:480]http://i169.photobucket.com/albums/u223/fusionbear/JTM%2045%20KT88%20driven%20Igor/IMG_0658_zpsaff5151f.jpg[/img]

[IMG:640:480]http://i169.photobucket.com/albums/u223/fusionbear/JTM%2045%20KT88%20driven%20Igor/IMG_0657_zpse386a1d6.jpg[/img]


[IMG:640:480]http://i169.photobucket.com/albums/u223/fusionbear/JTM%2045%20KT88%20driven%20Igor/IMG_0103_zps02065e20.jpg[/img]

[Littlewyan]

Looks pretty smart to me. Takes a lot of head scratching to build an amp like that!

[fusionbear]

Updated schematic:

[IMG789]http://i169.photobucket.com/albums/u223/fusionbear/JTM4580Schematic_zps1d381a41.jpg[/img]


Doh! I just realized that the A B+ node is actually after the Standby Switch. I will correct tomorrow...