few questions

[kinfu]

i noticed that the sound volume or intensity of the strings is not well balanced. i wonder that adjusting the pick up height or string action which one can deal with the problem i have metioned, and what is the different outcome of adjusting those two things, thanks

 

[bongomania]

Both are good solutions, both should be used together for best results.

 

[kinfu]

beside the volume, is there any other different outcome between adjusting those two things? such as tone etc

 

[bongomania]

Both can affect the tone, mainly because both affect the distance between the strings and the pickups. They are a magnetic system, and what we hear as "tone" is the magnetic interaction, which changes with distance.

The important thing is though that if you get each string to have an ideal distance from the pickup, you will have an ideal tone and an ideal volume. There is no case where having the wrong volume gets a better tone.

 

[Duckwater]

The closer your strings are to your pickups, the hotter the signal sent from your bass will be, and the greater the magnetic pull on the strings will be(less sustain, possible negative tonal results). Tonally it can sound more compressed(gainey?) with stronger low/low-mid emphasis as you raise them closer to the strings. Experiment and find the right balance for your playing, there is no right or wrong.

I find that when I have my action set too high it is hard to get the attack that I sometimes want to get out of my notes, and when it is set to low some notes lose their ability to "bloom" in the lower frequencies even though my basses don't normally have any fret buzz(I like being able to get some when I dig in).

YMMV, this is all my personal experience and I have been awake for 3 days

 

[JLS]

Why don't you employ a couple of screwdrivers and Allen wrenches, and find out for yourself? Nothing's going to explode.

Your ears, not anyone else's, are the final arbiter.