Estimate SPL drop from distance, air, path angle, and barrier loss for mics, monitors, live rooms, and stage sources. Use the same reference distance that was used to measure or estimate the source ...

Tip: Net vs Gross Volume. Always calculate net internal volume — subtract the driver displacement (typically 0.05–0.15 ft³ depending on driver size), port tube volume, and any internal bracing from ...

The True Sound Maker (TSM) is the splitting edge inside the slow air chamber. Its distance from the mouthpiece end determines the pitch of all tone holes. Always measure to the leading edge of the TSM ...

4-String Tenor C G D A.010 .014 .024 .034 N/A Chicago 4-String Irish Tenor G D A E.010 .014 .024 .034 N/A Irish 4-String Plectrum C G B D.011 .013 .022 .030 N/A Plectrum 6-String (Guitjo) E A D G B ...

Inversions Explained: Root position = lowest note is the root. 1st inversion = lowest note is the 3rd. 2nd inversion = lowest note is the 5th. 3rd inversion (7th chords only) = lowest note is the 7th.

Tip: End correction compensates for the fact that sound waves extend slightly beyond the open end of the pipe. Use 0.3 × inner diameter for open ends and 0.6 × inner diameter for the embouchure (blow ...

Tip 1 — End Correction: Always add an end correction factor of 0.3–0.6 times the bore diameter to each end of your tube length calculation. This compensates for acoustic pressure antinode extending ...

*Premium grands in restored condition can exceed original retail value. Tip 1 — Get a Professional Appraisal: For any piano valued over $3,000, consider hiring a Registered Piano Technician (RPT) ...