Tuning a sound system means jointly optimising acoustics, dynamics, crossover points and driver selection

Building the Valve Sound System took about a year of tuning, not just assembly. The process: source speaker drivers from manufacturers worldwide and run comparative tests to find the right roll-off and EQ; set the crossover points where sub, mid, and high enclosures hand off; match amplifier dynamics to the enclosures; and confirm the whole rig sounds right for the target music. The governing principle is interdependence — acoustics, dynamics, crossover frequencies, and driver choice must be optimised together, because changing one shifts the perceived result of the others. Getting the tuning right is as decisive as getting the hardware right.

Examples

‘you got to get the Acoustics right the Dynamics have to be spot on… every angle your crossover points you got to get your base and need your highs everything’s got to be right’ — and ‘it took us about a year just to get the tuning right,’ testing drivers ‘from all different companies all over the world.‘

Assessment

Name three interdependent parameters tuned when building a PA, and explain why moving the sub/mid crossover point can change perceived bass quality.