here is some bass fun

to bass
" First, choose the gauge of bass strings you plan to use. Different string gauges have different amounts of tension. When you change gauges, you may have to readjust your bass guitar. So find a gauge you like and stick with it.

Make sure you’ve installed your strings correctly.
Tune your bass strings accurately to your preferred tuning. You want the string tension to be the same as when you play.

You’ll want to get your bass neck as straight as possible before the point where the strings start buzzing. This will depend on how hard you play the strings. There’s not one right answer.

Find the truss rod nut. Typically, it will be a hexagonal nut on one end of your bass neck. It may be covered by a plate on the headstock. Or, it may be hidden by your pickguard.

On some basses you may be required to remove the neck, adjust it, put it back on and then tune the strings up again. If it’s not right, you’ll have to do it all over again.

Using a pencil, make a mark on the truss rod nut so you know where you started and as a general reference point.

It doesn’t take much turning of the truss rod to adjust the neck. Never force anything! Expect to maybe do a quarter-turn or a half-turn.

Use the correct size hex key so you don’t strip the truss rod nut. Your bass may have come with the hex key you need.

To avoid breaking the truss rod, first loosen it by turning it to the left (lefty-loosey).

Now, start tightening the truss rod by turning it to the right (righty-tighty). You may find the strings to be in the way of turning the truss rod. If they are, detune/loosen them and move them out of the way while you turn the truss rod. Tune the string(s) back to pitch to check the straightness of the neck.

You can check the straightness with a straight edge of some sort. Or, you can use your bass strings as a straight edge. Fret the 1st fret and the 15th fret of your lowest string. You should be able to see how much relief is in your neck by checking the space between the bottom of the string and the tops of the frets. You’ll probably need just a tiny bit of relief.

Don’t be surprised if it takes several days for your adjustments to settle in. You may have it perfect one day only to find it has moved the next day!

Once you’ve adjusted your neck relief, you can raise or lower each string’s height with their saddles.

Depending on your playing style, you may want the strings higher or lower. Experiment.

Adjust the height of your lowest string so you don’t get any string buzz. Check the open string and all the frets up and down the neck for buzz.

A little string buzz is normal.

Use a radius gauge to identify the radius of your fretboard. If you don’t want to remove your strings, cut notches out of the radius gauge where your strings fall. Then you can set it on the fretboard without removing the strings.

Once you know your fretboard radius, set the radius gauge on top of your saddles and adjust the heights of the other strings to match the fretboard radius.

You can also attempt to just eyeball the radius. Make it feel right and balanced.

Setting Intonation

To set the intonation of your bass guitar, you must lengthen or shorten the string by moving the string’s saddle backward or forward. You do this by tightening or loosening the intonation screws at the back of the bridge.

How to Set Your Intonation:

Using an electronic tuner, tune all the open strings to their correct pitches.

Starting with your lowest string, fret the string at the 12th fret. Make sure you press the string straight down. You want this fretted note to be in tune. It should be the same note as the open string.

Check the electronic bass tuner to see if you are flat (too low) or sharp (too high).

If you are flat, you need to shorten the string by moving the saddle forward.

If you are sharp, you need to add length to the string by moving the saddle backward.

After you adjust the saddle, double check the open string is still in tune.

Do the same for each string.

You will discover that it is impossible to get every single fret perfectly in tune. This is normal. Fretted instruments have a natural flaw where they can’t be perfectly intonated. You can just get really close. If you’re interested in why, look up “equal temperament” or “just intonation” in a music dictionary.

(or a search here on the MLPF)

You can set the height of your bass pickups by tightening or loosening the screws around the outside of the pickup.

Some brands of basses put foam underneath to push the pickups upward. If the foam is breaking down, you can put some springs under the pickup on the shaft of the screws to push them up instead.

Keep in mind you can set the pickups at an angle. They don’t have to be level. If you want more output from the treble side, raise that side of the pickup.

On some basses you can raise or lower the pole pieces individually. The pole pieces are the round, magnetic poles under the strings. On some pickups they are exposed; on others they are covered. "