Carvin Nomad With Alnico Gold

This speaker change, made the amp sound more detailed, and improved also the low end, and top end response, compared to the greenback, wich focused more on the midrange. Since the amp is a very small box, and the speaker is very efficient (100db), I had to use a cover to prevent feedback to the reverb tank. With this speaker, the amp is very loud, and I had to increase the negative feedback a bit (compared to when I was using a greenback) to smooth things out.
When used with a 1x12 extention, I like the G12h 55hz heritage speaker in open back cab, wich combines perfectly with the gold and improves the response of the combo.

"Modded" Carvin Nomad 112

This moddifications intended to get a more natural, vintage sound from this amp. The mods included a gz34 rectifier, choke, and a negative feedback pot. Also a Pentode/Triode selector for the El84. Filtering alteration was made for the rectifier operation. One dedicated transformer was added for the rectifier.
The internal speaker was swapped for a "greenback". the v1 tube was replaced by a 5751 NOS Jan (GE). Now this amp sounds great, and no need to mess too much with the design, even in the "infamous" chanel 2, in wich I am using a 12dw7 tube for a bit less pre- distortion.
As a combo I use it with a greenback in triode mode, and it cuts beautifully in a band situation. With an Alnico Gold the detail and natural compression are very pleasing, and the frequencies sound very well balanced for a small combo.

Edit: The tubes  now are all NOS. A GE Gz34 for rectifier, on V1 I use a tungsram 12ax7, on v2 a 5751 jan, followed by a couple of rft ecc83 and a ge12ax7 long plate on the PI. The power section is a quartet of mazda el84. I biased the amp cooler and run it allawys on triode, with the tube rectifier.The speaker I use now is a G12H heritage. Nice sounding amp!