- Are amp tubes supposed to glow?
- Is it bad to leave a tube amp in the cold?
- Is it bad to leave a tube amp on for a long time?
- How often do amp tubes need to be replaced?
- How do I know if my tube amp is blown?
- Do 12ax7 tubes need to be matched?
- Is it bad to leave an amplifier on?
- Do you need to let a tube amp warm up?
- How do I know if my amp needs new tubes?
- How much does it cost to replace tubes in an amp?
- Why is my tube amp crackling?
- Is it better to leave a tube amp on?
- Is it OK to touch vacuum tubes?
- How long does a 12ax7 tube last?
- Why does my amp sound bad?
Are amp tubes supposed to glow?
A: That blue glow is just a side effect of a power tube — a fluorescent glow in the blue spectrum.
The tube is fine.
It actually indicates that the vacuum inside the tube is very good, which is what allows this phenomenon to occur.
It will not have any effect on the performance or tone of the amp..
Is it bad to leave a tube amp in the cold?
Tubes are not harmed by cold weather as long as they are allowed to warm up and cool off GRADUALLY. That means when you bring your amp inside from five hours in the back of a sub-zero truck you need to let it warm up to room temperature before applying power (this is basically true of all electronic equipment).
Is it bad to leave a tube amp on for a long time?
There is nothing wrong with leaving on your amp for a long time. It doesn’t wear out the tubes faster than if you were to play it for eight hours straight. Probably even less, because you don’t actually play it, but just leave it. Imagine how long before a show the equipment will be standing on stage, ready to play.
How often do amp tubes need to be replaced?
every two yearsSome guitarists religiously replace the tubes in their amps every two years; others never do so, or not until the amp takes a vow of silence.
How do I know if my tube amp is blown?
Crackling, squeals and feedback, excessive noise and muddiness or low output are all evidence of tube problems. Power tubes. The two main symptoms of a power tube problem are a blown fuse or a tube that begins to glow cherry red. Either are typically indicative of a power tube failure.
Do 12ax7 tubes need to be matched?
There is no need for your pre tubes to be matched. Yes you can change the brands around if you like. It can make a pretty noticeable difference sometimes. I think the TungSol reissue is a great 12AX7, but buy a few different brands and see (hear) what you think.
Is it bad to leave an amplifier on?
Leaving it on will use power, which can be considered bad form environmentally and cost you a bit on the power bill. Leaving it on could eventually cause it to fail somewhat sooner than it might otherwise have.
Do you need to let a tube amp warm up?
It is important, too, that the warmup that you give your tube amp is very thorough. If they are not warmed up properly, the tone of your playing will not be as good as it ought to be. As a rule of thumb, your tube amp needs to be warmed up for 20 to 30 minutes at least before you can start playing your guitar.
How do I know if my amp needs new tubes?
A: These are the most common signs that tubes need replacement: Excessive noise (hiss, hum) including squealing or microphonic tubes. Loss of high end. … A muddy bottom end; Sounds like there is too much bass and note clarity is lost. Erratic changes in the overall volume. … The amp doesn’t work!
How much does it cost to replace tubes in an amp?
EL84 aren’t much more. If you just get run of the mill stuff it will be cheap. Once you start looking into NOS tubes, etc, you can expect to pay $25-200 per tube in some cases.
Why is my tube amp crackling?
Is the amp making crackling or popping noises when you’re not playing? If so, this is can be caused by faulty preamp or power tubes. … If no tube substitution alleviates the problem, the amp will need to be serviced, because there’s a good chance it has a failing plate or cathode resistor in the preamp.
Is it better to leave a tube amp on?
Don’t leave your tube amp on standby for too long, it can cause damage! It’s all about the capacitors! … When first turning on the amplifier and before the tubes are warm, tubes do not conduct high voltage, so there is no “load” on the power supply.
Is it OK to touch vacuum tubes?
Think of a vacuum tube as a light bulb. It is a glass envelope that generates heat as it is working. You shouldn’t be handling them all the time but occasionally touching them will not hurt. Let it cool off first though, they can get mighty toasty.
How long does a 12ax7 tube last?
about 10,000 hoursSmall signal tubes like a 12AX7 or 6922 will work well on average for about 10,000 hours. If you leave your equipment on 24 hours a day, well you do the math: There are 8,760 hours in a year.
Why does my amp sound bad?
Most guitar amps have a gain or drive knob or pre-gain and post-gain knobs. When these knobs are adjusted in the right way, it brings distortion into your tone. … You should hear your tone start to distort. Keep adjusting the gain and volume knobs until you get the right amount of distortion at the volume level you want.