New Reverb Rocket build

[Zippy]

Hey Mark,
I am loving your front faceplate appearance. Very "1960s Space Age". Very unique and completely awesome. It looks so cool that I am trying to imagine what the perfect compliment of cabinet would look like. I keep thinking of an unfinished sort of dark wood cabinet with a removable top piece (a la vintage Traynors). But really with faceplate stylings that awesome, you can put it in anything.

I didn't want to be the one that says "I like the look of your knobs" but since someone else said it first, I'll just give a +1.

Cabinet: There was no wood in Sputnik. I'm thinking it needs some louvers and some HP-style putty-colored paint - that, or brushed metal.

+1 for the sweet build. Now for one with KT-66s...

[M Fowler]

Thanks for the kind words guys.

I wanted the smaller Dumble knobs but could not find them and ended up ordering these which left limited front face plate spacing.

Working on decreasing some residual ground loops that I have never encountered before in this type of circuit. I need to get a lot better at diagnostics or go back to two or three tube amps.

[telentubes]

Another nice one from your bench Mark. Keep 'em coming. The face plate is very cool.

[M Fowler]

Thanks, that faceplate was designed by Colossal a very talented amp builder as well.

[M Fowler]

Bcmatt noted So, do you feel like you lose anything compared to a non-reverb type rocket tone-wise, or does it do it all, plus reverb?

I prefer the reverb with the Rocket and I find it hard to go back to a regular Rocket circuit but that's just me.

[M Fowler]

Ampdoc wrote I don't see your master on your final schematic however,..which circuit did you use? I always put a pot in place of the "upper" PI splitter resistor,...no additional parts required.

We discussed that master in the previous responses above your post.

It is a 25kL pot wired between the PI and as colossal noted

the method cold-biases the PI and works quite well as a means to reduce volume while preserving tone

[paisley_tele]

are you using the add on verb from the 18watt site or did you desing your own. i am going to try the add on verb

[M Fowler]

I used Normster's a version of the Matchless Lightning Reverb.

[angelodp]

Is that not a 1k2 resistor on the schematic for the master. You mentioned 1k5 and was wondering if that was a tweak with the master in place or just what you had avail. Also the bias pot is hard to spot in the picture?

[M Fowler]

The Rocket is 1k2 and I probably was thinking 1k5 which is a common resistor in that spot.

No bias pot this is cathode bias with 50R and 68R, switchable for operating at 18w or 36w mode.