2-Way 400W Passive Speaker Crossover

Dimensions: 7 × 5 × 2.5 cm. Weight: approx. 85 g. Power handling: up to 400W. Impedance compatibility: 4–16 ohm speakers. Construction: ABS plastic housing with metal components. PCB colour: red. This passive 2-way crossover routes amplified audio signals to high- and low-frequency drivers while offering direct hardware-level control over tonal balance. Bass response is shaped using two independent jumpers: A defines the lowest reproducible frequency (removing cap attenuates infrasonic energy), B adjusts the upper bass lift (engaged = warmer, disengaged = leaner). Treble is managed via dual jumpers C and D, which together provide four discrete output levels — enabling precise matching to tweeter output, listening distance, and room reflectivity. All adjustments are made by inserting or removing standard 2.54 mm pitch jumper caps — no desoldering or component substitution required. Suited for use in domestic hi-fi projects, stage monitor rebuilds, or educational audio labs. Requires correct polarity alignment and secure terminal connections. Best results are achieved after cabinet sealing and initial break-in of drivers — then fine-tuning via comparative listening using voice-led material (e.g., jazz vocals, acoustic guitar) to assess midrange coherence and transient accuracy.