I am finding a significant problem achieving and maintaining consistent tone and volume across all registers of the double bass, both when playing arco and when playing pizzicato. As a former classical guitar player, it is not too difficult to maintain consistent volume for a 3 octave scale, for example, on the classical guitar. But the double bass presents significantly more major problems in this area, I think, because the low register resonates so powerfully that the sound is naturally very loud with wonderful sustain. It seems to me that the double bass notes in the high register are naturally dramatically different. As one ascends to the higher registers, the sound gets quieter, thinner, and it seems with less sustain. I am sure this is a very big problem for us beginners on the instrument. However, I have occasionally heard some professional classical and jazz double bassists appear to play with one type of sound in the lower registers and a different, quieter sound in the higher registers. Of course, there are some great players with wonderfully consistent tone and volume across all registers. (Edgar Meyer and Francois Rabbath in classical, Ray Brown and Ray Drummond in jazz immediately come to mind). On the piano, a relative beginner can fairly easily play a 3, 4, or even 5 octave scale with consistent tone and volume, which makes it a great instrument to play tunes and improvise for fun in the jazz idiom. However, it is really disappointing during a jazz bass solo to hear the bassist move into the higher register with a noticeable drop in volume, a changed tone, and even a muffled sound on some notes and then return to lower registers with a big, booming, beautifully sustaining sound! Since this occasionally occurs with arco playing as well, I am wondering if people here recommend practicing playing louder in the higher register to address this problem? I recently posted what Ray Drummond stated about this problem in the right hand pizzicato thread. However, I see this as a problem for right and left hand pizzicato technique, arco playing, and also because of the E string not having a string below it for playing strong pizzicato right hand technique consistently on all 4 strings. I find that when playing scales or tunes, my E string notes also often tend to lose consistency in tone and volume compared to the 3 highest strings. Therefore, what specific suggestions do people here have to get the E string to have the exact same good, strong, identifiable, and musical basic "sound" as the other 3 strings as well as achieving consistent tone and volume across all registers on all strings in arco and pizzicato double bass tecnique?