Musical Instruments & Acoustic Products worked example

Final Tuning Capacity at 65% tuning room uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop tuning room uptime to 65%, then walk the calculation through step by step. Estimate good instruments per shift from the final tuning room, combining cycle output, available cycles, uptime, and first-pass yield so you do not overpromise lead times.

The inputs for this scenario

  • Instruments per tuning cycle: 4 instruments / cycle (held at the documented default)
  • Tuning cycles available: 480 cycles (held at the documented default)
  • Tuning room uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • First-pass tuning yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross tuning capacity = instruments per tuning cycle × tuning cycles available.
  • Good tuning capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross tuning capacity works out to 1,920 units at these inputs.
  • Tuning room downtime loss works out to 672 units at these inputs.
  • First-pass tuning yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where tuning room uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to tuning room uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes uptime and first-pass yield are stable averages; a tricky batch, a humidity swing, or a tuner absence can pull actual good capacity well below the calculated figure.

Results at a glance

  • Good tuning capacity: 1,211 units (headline result)
  • Gross tuning capacity: 1,920 units
  • Tuning room downtime loss: 672 units
  • First-pass tuning yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Final Tuning Capacity calculator, set tuning room uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.