Tube Amp Archive

3 years later...does anyone have a layout of this Rocket Triode Boost? Showing how to implement on a non-reverb Rocket would be helpful.

Cool, I'll try that. Thanks!

Mark, did you use the Weber relay with the footswitch? If not, how did you add it?

I added an on/off switch with a 25uf cap and I really like the boost option! I may also try another switch for more options - 10uf, off, 25uf... Sorry if my layouts were incorrect earlier. Didn't have the switch and meter at the time. Easy enough when you do:) While the boost is a great feature it w...

Perhaps this will work better...

I'd like to add a boost mod to my Rocket. Can someone tell me if the bottom layout is correct. Top shows stock layout as a reference. I realize I'm skating on thin ice here and could use some help

Sounds like a good plan and the height should be enough depending on which caps you use. Perhaps with any cap choice.

The Liquid Nails I used to mount mine has proven to work well so far. Much better than the hot glue.

Here's an update a few weeks later for future troubleshooters... Initially I thought the aluminum cover made a big difference, but it really only helped when the amp was upside down while working on it in a room with dimmers. Occasionally the aluminum foil (now switched to a plate)would also touch t...

Yes, debugging can be very frustrating indeed. I learned a lot in the process though. Here's a photo of the final amp. One thing worth mentioning...someone recommended hot glue for the cap stack. After some serious heat from playing and then moving a few wires around, once it was cool, the whole thi...

This is a great thread about transformer vibration / hum: https://tubeamparchive.com/viewtopic.php?t=17505&sid=7211140f4aa26e019a97d815b9a7d786 The Heyboers I use are pretty loud when close to them, and to some degree it affected my overall hum perception. I can still hear some hum through the speak...

Interesting and it all makes sense for sure. Again, in my case the reduction in hum seemed to be mainly due to separating filter grounds and the shield/cover, but they all add up for sure. Next I'll remove the 68k input resistor and mount on the tube socket with shielded wire. Yes, only one side to ...

Andy - Wow! I thought I had already tried all possible grounding combinations with no difference, including removing the pots from chassis to isolate. I did both of the above and in combination with a heavy aluminum cover placed under a large book it's a night and day difference. I am so thrilled!!!...

xtian wrote:

mickephoto wrote:The filter caps are normally not oriented this way in a Rocket, but I had to due to space (chassis screws). Could this induce hum perhaps?

I did my caps the same way in two Rockets built last month. No issues.

Good to know, thanks!

cbass wrote:Measure AC voltage at the B+ that should give an idea if your filter caps are filtering.

I measured about 2.5 volts AC on the B+ on startup. After a while it went up to 4V. Power tube plates all have the same AC (DC is 340). Pre tubes have almost no AC.

I checked resistance on all grounds and they measure 0.4ohms or less.

The OT battery tester sounds like a good thing to try.

The filter caps are normally not oriented this way in a Rocket, but I had to due to space (chassis screws). Could this induce hum perhaps?

A few more photos...