Hello, my name is Greg and I am excited to have found this forum. I would like to build an amp for myself and really am interested in the Rocket. I have never built an amplifier so this should be interesting. I have many years of electronics assembly experience and have a BS in mechanical engineering so I do know that bathing and soldering should be separate activities.
I will continue reading the forum and eventually jump in to an amp build.
I look forward to getting to know the contributors here and will ask questions in time.
New Member...hello to all!!!
Moderators: pompeiisneaks, Colossal
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skyboltone
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Re: New Member...hello to all!!!
Welcome aboard Greg. You shouldn't have much trouble with the Rocket, just be aware that lead dress is everything in any Ken Fisher designed amp.
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
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skyboltone
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Re: Lead Dress?
In a guitar amp, or any hi-gain amplifier, every component and wire has a magnetic and electrostatic field attached to it. Some of those fields are stronger and some are weaker. The spatial relationship between those components affects not only basic stability but also tone. The Express and Liverpool are especially touchy. Things have to be layed out and dressed carefully. I'm not saying that there is only one way to do it, but as a noob, I highly recommend that you carefully follow proven layouts before branching out on your own.Greg wrote:I know guitars but amps are something else in deed. What is lead dress?
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: New Member...hello to all!!!
I will absolutely follow a proven design...There is a great looking schematic, BOM and layout here somewhere that was just recently updated. The excel sheet BOM is fantastic. Not an inexpensive build but certainly thorough.
I was wondering if it is easy to make the Rocket half power. I will use it in a family environment and lower volume is important. I am also looking at a power attenuator but I am not willing to compromise tone to get lower volume.
I was wondering if it is easy to make the Rocket half power. I will use it in a family environment and lower volume is important. I am also looking at a power attenuator but I am not willing to compromise tone to get lower volume.
Greg
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skyboltone
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Re: New Member...hello to all!!!
I have built quite a few two EL-84 express/liverpool. It can be done and works well. A better way all around though may be to flag down UR-12, Dana. He is marketing a circuit that scales the power across the entire amp. I have the board but haven't built one yet. Talk him up and get some ideas.Greg wrote:I will absolutely follow a proven design...There is a great looking schematic, BOM and layout here somewhere that was just recently updated. The excel sheet BOM is fantastic. Not an inexpensive build but certainly thorough.
I was wondering if it is easy to make the Rocket half power. I will use it in a family environment and lower volume is important. I am also looking at a power attenuator but I am not willing to compromise tone to get lower volume.
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
-
skyboltone
- Posts: 2287
- Joined: Wed May 10, 2006 7:02 pm
- Location: Sparks, NV, where nowhere looks like home.
Re: New Member...hello to all!!!
I might add Greg, that you can build it as is and just pull the two outside tubes and double the cabinet ohms. So if you are set on say the 4 ohm tap at the switch, run an 8 ohm cabinet. You'll be close.
I would like to say too though, the perceived volume from 20 watts to 40 watts aint' much. They still get pretty loud.
I would like to say too though, the perceived volume from 20 watts to 40 watts aint' much. They still get pretty loud.
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.