Tube Amp Archive

thanks!

never mind. I found it. i was looking at it wrong.

If you use two 100 ohm resistors as your heater center tap, do not use the power transformer heater center tap wire and visa versa

What is the reason for this i done this on my champ when i build it because the mojotone layout had it on there. and it is very quite. will this hurt anything?

Bump

Getting ready to build a 5e3 as my second build. My first was a champ and turned out great. Is there anything that I need to specificaly pay attention to that will be different from a champ or any tips will be greatly appreciated. Also what is the best grounding scheme. On the 5f1 I put all the prea...

oh sorry. V1 cathode bypass cap on a champ

i have put a 25uf and i like it. i just couldn't get a 50v at the time so i put a 25v in at the time and i was just wondering if i should change it out or just keep it in there

is a 25volt alright to use or do you need a 50volt?

Any tips? Yes, one on each jack! LOL, the 1/4" phone plug is said to have tip and sleeve. The tip is the active wire. The sleeve is grounded. Which type of jack have you got? The Switchcraft type (upper) or Cliffs/Rean type (lower)? When you say the jack doesn't work, can you say any more? When you...

Any tips?

Thanks to all i finished it. and it works and very quiet. The only thing is input 1 jack doesn't work but input 2 works i can sort that out sounds great so much harmonics..... i think i'm hooked moving on to a 5e3 after i get the jacks working right and find out where i went wrong. Thanks again!

I just pulled up the Mojo 5F1 assembly manual. The PT has the following wires: 2 black -- these are the primary connections to the 120VAC wall supply. Red-Red/Yellow-Red -- these are the high voltage secondary; ground the Red/Yellow as it is the center tap. The red wires go to pins 4 and 6 on the 5...

so it's fine to solder it to the ground rail right?

the schematic showing it going into a 100ohm resistor on the same rail as the heaters

building a 5f1 my first build ever. where does the 5 vac center tap red/yellow wire go from the power tranny. It's a mojo kit. Thanks!