Trainwreck Rocket...

[dehughes]

Hello all,

I've amassed all the information I could gather from the board, but I've still not found a "complete" schematic for the Rocket. I have the various pieces of schematics and modified clone layouts, but I've yet to see anything definitive. Perhaps I already have the "definitive" information, but would one of you be so kind as to point me towards such?

Also, I'm considering building a half power version of the Rocket (heresy, perhaps...). Has anyone done this, and if so, what should I expect?

THANKS.

[doctord02]

This looks pretty definitive to me... The fellows have been keeping the schems updated as they got new info...

https://tubeamparchive.com/viewtopic.php?t=5684

[dehughes]

Any suggestions on the 1/2 power (r.e., 2 x EL84) version of this amp? At first glance, the Rocket kinda looks like an AC30 with tighter filtering, etc...so I can see this as working well in a 2 x EL84 version...

[fishy]

That layout was put together around the time Allyn posted his Rocket build. I think I am right in saying his was dead on compared with a real rocket.

I don't know on the half power but I would guess you get a similar result to the half power Liverpools. Not significantly quieter but not as full.

Pete

[dehughes]

That layout was put together around the time Allyn posted his Rocket build. I think I am right in saying his was dead on compared with a real rocket.

I don't know on the half power but I would guess you get a similar result to the half power Liverpools. Not significantly quieter but not as full.

Pete

Hmm...not as full. I'd most likely have a smaller OT, etc.... Yeah. I suppose I'm looking to get full but "smaller", if that makes sense.

[rawnster]

Hey David, we seem to be tracking in the same direction. I've been pondering building a Rocket now for a few days. Reading the post about Derek Ferwerda and Ken has pushed me over the edge in wanting to build one.

geez, once you start, you can't stop.

[rhinson]

That layout was put together around the time Allyn posted his Rocket build. I think I am right in saying his was dead on compared with a real rocket.

I don't know on the half power but I would guess you get a similar result to the half power Liverpools. Not significantly quieter but not as full.

Pete

Hmm...not as full. I'd most likely have a smaller OT, etc.... Yeah. I suppose I'm looking to get full but "smaller", if that makes sense.

for the smaller output trannie use the dynaco z-565. it's the little brother of the a470 and a very nice sounding trannie. you can get repros at triode or just look on ebay for old one----they pop up on ebay quite frequently. also the hammond 1650f would be a good choice. rh

http://store.triodestore.com/z517wadyoutr.html

[dehughes]

That layout was put together around the time Allyn posted his Rocket build. I think I am right in saying his was dead on compared with a real rocket.

I don't know on the half power but I would guess you get a similar result to the half power Liverpools. Not significantly quieter but not as full.

Pete

Hmm...not as full. I'd most likely have a smaller OT, etc.... Yeah. I suppose I'm looking to get full but "smaller", if that makes sense.

for the smaller output trannie use the dynaco z-565. it's the little brother of the a470 and a very nice sounding trannie. you can get repros at triode or just look on ebay for old one----they pop up on ebay quite frequently. also the hammond 1650f would be a good choice. rh

http://store.triodestore.com/z517wadyoutr.html

Hey, thanks! Any recommendations for a PT?

I'd considered using a Mercury Magnetics AC15 tranny set... Good idea? Bad idea?

[Ron Worley]

Hello all,

I've amassed all the information I could gather from the board, but I've still not found a "complete" schematic for the Rocket. I have the various pieces of schematics and modified clone layouts, but I've yet to see anything definitive. Perhaps I already have the "definitive" information, but would one of you be so kind as to point me towards such?

The Schematic and Layout are as dead on to a real Rocket as is possible; they are based on pictures and the examination of a real one. Allyn has reviewed the documents and did not note any errors. If there are any, please let me know and I will make changes accordingly.

Ron Worley

[67plexi]

The Rocket is now my #1 amp. follow allyn's layout and you can't go wrong as far as 1/2 power I don't need it just run 2x12's or 1x12 25 watt
greenbacks. At first I was using 8x12's and the band was bitching.
now with only 2x12 set up It's like a blues Breaker set up but sounds better to my ears. look at the photos of ken with his vox 2x12 cabs?

Well My 2 cents on the Rocket

Best regards Steve.

[Zippy]

Hello all,

I've amassed all the information I could gather from the board, but I've still not found a "complete" schematic for the Rocket. I have the various pieces of schematics and modified clone layouts, but I've yet to see anything definitive. Perhaps I already have the "definitive" information, but would one of you be so kind as to point me towards such?

The Schematic and Layout are as dead on to a real Rocket as is possible; they are based on pictures and the examination of a real one. Allyn has reviewed the documents and did not note any errors. If there are any, please let me know and I will make changes accordingly.

Ron Worley

Ron, he's not saying that your contributions are in error - he just didn't find them. Note the "would any of you be so kind as to point me towards such?"

It's OK. Step off the ledge, you don't need to jump.

[dehughes]

Sweet. Thanks. I just missed the info....now I have what I was looking for. Much appreciated, Ron.

I played my friend's Express clone the other day (rawnster's) and it was really, really cool. Really cool...like, "okay, being a no-pedal, guitar-into-amp guy, this is close to perfect" kind of cool. However, it was really, really loud. AND, I already have an AC30-ish clone, so while I'm very intrigued by the Rocket I'm hesitant to build ANOTHER 4xEL84 amp, especially one without a master volume (and I without an attenuator....). Still, I've read too many "the rocket is the amp for me...the rocket is the only amp I play...the rocket is the best thing ever invented" lines to completely dismiss building one.

SOOOO, I'm wondering if a 2xEL84 version would be heretical to build. And, if it would even be worthwhile, as it would NOT be a Rocket, technically, without all the power tubes, different trannies, etc....

I'm hoping you serious Trainwreck guys would be so kind as to weigh in on all this. I have an AC15-ish chassis lying here in need of trannies, and this Rocket schematic staring me in the face....

[gahult]

SOOOO, I'm wondering if a 2xEL84 version would be heretical to build. And, if it would even be worthwhile, as it would NOT be a Rocket, technically, without all the power tubes, different trannies, etc....

I'm hoping you serious Trainwreck guys would be so kind as to weigh in on all this. I have an AC15-ish chassis lying here in need of trannies, and this Rocket schematic staring me in the face....

I don't know how to make that white yet

See the letter on page 2 from Derek Ferwerda
"build your own amp. You have a right to your own amp and a responsibility to love it and nurture it in the manner that Ken did. Yours might even be better!!! Ken would have told you that himself. I heard him say that over and over again."
"Start building amps right where you are in your development. Help each other, ask each other, serve each other, honor each other."

I'm sure you will be OK and find all the help you need. There are a great bunch of people here.

Gary

[dave g]

If you've already got an AC15 chassis, why not build a 2xEL84 Rocket? If the fact that there's no MV/attenuator is an issue, take a look at Dana's VVR circuit. It's super easy to implement, especially on a cathode biased amp, and it works better than any attenuator.

[dehughes]

If you've already got an AC15 chassis, why not build a 2xEL84 Rocket? If the fact that there's no MV/attenuator is an issue, take a look at Dana's VVR circuit. It's super easy to implement, especially on a cathode biased amp, and it works better than any attenuator.

Okay. Cool. I'll have to look for Dana's VVR circuit, as I'd like to do something like than on my AC30 creation in place of the Master Volume...

So the VVR is better than any attenuator? Wow...that's a bold statement...not that I doubt it, but I'm excited...