jmoschetti45
- Oct 2, 2011
- 1
- Joined
- Oct 2, 2011
- Messages
- 1
To start off, I know almost nothing about tubes, but want to learn, so I figure this is a good starting project.
I want to built a 5-10 watt amp using tubes. I've searched around, and found a few schematics, but most of them are only for a few watts of power.
Main question I guess is, can I run tubes in parallell? I've noticed you can run one or both 'triode sections' of a 12AX7. Running them in parallel gives more output power. Not an issue there, I can just use 2, one per channel. I've read about the whole 'matched sections' thing, but for a first tube project, not too worried about it.
Can I run power tubes like an EC88 in parallel as well?
Also, do I really need to use a 12AX7 to run a EC88? I've seen some schematics where only a 12AX7 is used. Can't I just run the power tube? Input would be from a cd player/ipod, so it wouldn't need preamplification.
Things would be simple if I could just run 2 or 3 or 4 12AX7's in parallel per channel, or could just use 2 or 3 power tubes in parallel. My goal is to keep the parts count as low as possble.
I've also seen ignition coils used as output transformers, and besides the higher risk for shock, see nothing wrong with this?
I want to built a 5-10 watt amp using tubes. I've searched around, and found a few schematics, but most of them are only for a few watts of power.
Main question I guess is, can I run tubes in parallell? I've noticed you can run one or both 'triode sections' of a 12AX7. Running them in parallel gives more output power. Not an issue there, I can just use 2, one per channel. I've read about the whole 'matched sections' thing, but for a first tube project, not too worried about it.
Can I run power tubes like an EC88 in parallel as well?
Also, do I really need to use a 12AX7 to run a EC88? I've seen some schematics where only a 12AX7 is used. Can't I just run the power tube? Input would be from a cd player/ipod, so it wouldn't need preamplification.
Things would be simple if I could just run 2 or 3 or 4 12AX7's in parallel per channel, or could just use 2 or 3 power tubes in parallel. My goal is to keep the parts count as low as possble.
I've also seen ignition coils used as output transformers, and besides the higher risk for shock, see nothing wrong with this?