IMG_1351 Full size 1920 × 2560 pixels Couf Bass Gets Mini Overhaul The octave vent that is open from D2 to G#2. Note the size of the opening Previous image Next image Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.