- 1 How often do tubes need to be replaced?
- 2 What tubes does a Fender Blues Junior use?
- 3 When should you replace amp tubes?
- 4 How much does it cost to replace tubes in an amp?
- 5 What does a bad tube sound like?
- 6 Is ECC83 the same as 12AX7?
- 7 What is the difference between EL34 and EL84?
- 8 What is the best EL84 tube?
- 9 Is the Fender Blues Junior A good amp?
- 10 How do you date a fender professional junior?
- 11 Does Fender Blues Jr have reverb?
- 12 What can you not do with a tube amp?
- 13 How do you know if a vacuum tube is bad?
- 14 How long does a tube amp last?
How often do tubes need to be replaced?
You can expect a conventional amplifier tube to have a service life ranging up to 10,000 hours. Tubes with military specifications are built to last up to 100,000 hours.
What tubes does a Fender Blues Junior use?
A set of three matched Groove Tubes 12AX7 preamp tubes and two matched Groove Tubes EL84 power tubes, graded according to Fender’s specifications, are used in all factory Blues Juniors.
When should you replace amp 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?
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.
What does a bad tube sound like?
Crackling, squeals and feedback, excessive noise and muddiness or low output are all evidence of tube problems.
Is ECC83 the same as 12AX7?
The ECC83 Valve – also known as the 12AX7. The 12AX7 Valve (or 12AX7 vacuum Tube) is a small preamplifier valve which is identical to the ECC83 – same valve, just a different name. It has two identical triodes both of which have a high voltage gain.
What is the difference between EL34 and EL84?
EL34 vs EL84 vs 6L6: Differences Explained In general, EL34 and 6L6 tubes are typically used in higher wattage applications, usually amps that are over 50 watts. EL84 tubes are used for lower wattage amps, typically in the 15 to 30 watt range, but have essentially the same sonic “flavor” as EL34 tubes.
What is the best EL84 tube?
Best EL84 Tubes Reviewed
- 1 Tung-Sol Matched Quad EL84 /6BQ5 Tubes. See more reviews. Weighing 3.19 ounces, the Tung-Sol Matched Quad is advertised as a must-have for those who are using American amplifiers.
- 2 Mullard Matched Quad EL84 Tubes. See more reviews.
- 3 JJ Electronics Amplifier EL84 Tubes. See more reviews.
Is the Fender Blues Junior A good amp?
It’s an amp that plays great, and gives me the classic Fender sound that I’ve heard on so many classic recordings. It’s built really well and I’m not afraid to push a lot of sound out of it. Also, with such a great price, I don’t have to take out an insurance policy when I take it to a gig.
How do you date a fender professional junior?
The first letter refers to the year, and the second letter refers to the month of manufacture. The codes may be interpreted as follows: A stamped code of CE for example, would date the amp to 1992, May. With my Pro Jr the sticker is in the cab on the floor.
Does Fender Blues Jr have reverb?
THE BOTTOM LINE The Fender Blues Junior IV is reborn as a new benchmark for a portable workhorse combo with bolder, full-bodied tones and a natural-sounding reverb.
What can you not do with a tube amp?
Never, never, never run the amp with no speaker plugged in. This can cause major damage. Do not flip the power switch off, then back on rapidly. This can cause power supply damage.
How do you know if a vacuum tube is bad?
When a vacuum tube develops an air leak (a small crack or bad seal by a pin for example) this getter color will change to pure white. If you see this you know with 100% certainty that the tube is bad. Third, look for a purple glow that is very focused around specific elements inside the tube.
How long does a tube amp last?
Depending on how often you turn on and turn off your gear, but tubes should last about 5,000 to 10,000 hours. For most people, they only need to be replaced every 2-3 years at most.