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First time trying to replace my own tubes- I can’t tell what I’m doing wrong sizing wise

5 min read

Asked by: Hanson Mcclellan

Can you change tubes yourself?

To change preamp tubes, all you’ll need is a screwdriver and a little know-how. On a lot of amps, you will need to remove the back panel; but don’t worry, this will not void your warranty. Nearly all manufacturers expect you to change your own preamp tubes, but check your manual to be sure.

How do I know when to change my tubes?

These are the most common signs that tubes need replacement.

  1. Excessive noise (hiss, hum) including squealing or microphonic tubes.
  2. Loss of high end. Little or no treble.
  3. A muddy bottom end. …
  4. Erratic changes in the overall volume. …
  5. A blown H.T. …
  6. The amp doesn’t work!

How do you know if your tubes are matched?

Think of a power amp with four tubes as a car engine with four carburetors. If there is an idle adjustment for each “carb” that would be the same as an individual bias adjustment screw for each tube. If there is only one bias screw for each two tubes, you need a matched pair of tubes.

How often should I replace my tubes?

On average, tubes can last from 500 to 1,000 hours, so if you play with your amp two to three hours every day, you can safely expect to get around a year or less from your vacuum tubes.

Is it OK to touch vacuum tubes?

It is OK to handle ambient cooled vacuum tubes with bare hands, IF THEY ARE COOL, and skin oils will seldom cause a problem, even if it chars.

How much does a tube replacement cost?

The Best in Auto Repair

The average cost for orifice tube replacement is between $189 and $204. Labor costs are estimated between $55 and $69 while parts are priced at $135. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.

What does a blown tube sound like?

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.

How long does it take to burn in tubes?

For burn in, 50-100 hours is how long most new tubes need to sound their best. You don’t need to play music through the tubes, just leave it on for the time to put the hours on. After that every time you turn it on it takes about 20-30 minutes for the tubes yo warm up.

What happens if you leave a tube amp on too long?

There is always risk of damage wherever heat is involved, but the biggest issue with leaving a tube amp on all the time is if a tube blows. This can turn the amp into a dangerous hazard. It could even start on fire, which is a pretty big deal, especially if no one is around to call the fire department.

How important is tube matching?

Power tubes require matching because the way they amplify signal can create exceptionally bad sound if they are poorly matched, but pre-amp tubes generally aren’t used this way and so matching them is unnecessary.

Why do tubes need to be matched?

Power tubes are electrically matched so each tube will have the same amount of “idle” plate current and amplification characteristics when used in an amplifier. This is done so the tubes can work together in your amp giving you optimal sound quality and tube longevity.

What does it mean when tubes are matched?

Some companies offer matched sets of replacement tubes. This means that the tubes have been tested — the plate current draw is measured under normal operating conditions — and each tube in the set has been determined to have the same current draw.

How do you break in a vacuum tube?

Quote from video: We've seen online that people say to simply just leave the amplifier. On no music playing. And leave it on overnight or leave it on for a few days to burn in the tubes.

How do you retention a tube socket?

To retention, gently and carefully push the circular clamps towards the center of the tube socket so that when a tube is installed the socket clamps make good contact with the tube pins. Make sure the clamp is still centered within the hole.

How long does it take for a tube amp to warm up?

Quote from video: Похожие запросы

How do you swap tubes?

Quote from video: To remove the covers i simply pushed down on the cover. And gave it a small twist. To remove the tubes carefully pull them straight up and only use a slight rocking motion if they are stubborn.

Is it safe to replace tubes in amp?

As long as the amp is not turned on, then changing tubes is safe, however the safest way is to turn the power off at the wall and unplug the amp, so that absolutely no power is flowing to the amp.

How much does it cost to change tubes in amp?

It will probably cost around 100 USD to buy them and have them installed and your amp rebiased. The price will go up if you have more tubes.

Do different tubes sound different?

Most of us have experienced a noticeable change in sound quality when changing tubes. Although these changes are almost always attributed to the tube alone, it’s not that simple. Actually, it’s not the just tube— The difference you hear is tube/amp interaction.

What does tube rolling mean?

What Is Tube Rolling? Simply put, tube rolling is the process of trying out a variety of different tubes in the same socket in an amplifier in order to find the one that sounds best to you. The name comes from the circular rolling motion used to slide the tube’s connection pins out from their sockets in the amp.

Are more tubes better?

More valves will usually mean more power or more versatility, but not always. better well not necessarily. the 7 tube amp may be “better” for certain things depending on why the extra tubes are there. high gain amps tend to have more tubes for more gain stages so in that case more might be “better” but not always.