The D300 has three octaves of fully chromatic range; the lowest note is the D below middle C. There are 13 courses of strings on the treble bridge and 12 courses on the bass bridge. A super-bass bridge to the far left has 7 courses and there are two courses in the upper left corner. This configuration is often referred to as "13/12/7".
The overall range is D3 to E6; chromatic range is E3 to E6.
This configuration is for instruments with serial numbers after 13377. For earlier instruments, download a PDF file of the tuning chart.
Superscript numbers indicate octaves (C4 is Middle C).
Dots indicate marked courses.
All strings have loop ends.
Wire gauges are shown in inches.
PB = phosphor bronze wire.
PBW = phosphor bronze wound.
SSW = stainless steel wound.
Unspecified strings are plain steel wire.
Downloadable string & tuning chart:
for serial numbers after 13377
for serial numbers before 13378
Downloadable string order form