- Each of treble, mids and bass uses a standard 12 dB/second-order circuit to deliver clear, balanced crossover performance across the frequency bands. - High frequency band current limiting protection bubble: when current is small it acts as a wire; when current is too large it acts as a load to absorb excess energy, preventing damage to the high-frequency driver. This is a movable protection feature. - Inductors wound with oxygen-free copper wire: bass coil diameter 1.2 mm; middle-upper coil 1.1 mm; middle-lower coil 1.0 mm; tweeter coil 1.0 mm. The copper windings provide strong power delivery and enhance bass performance. - Capacitor uses a non-inductive MKP type rated at 400V, preventing peak voltages from crossing and protecting the speaker. The design contributes to reliable performance and solid sound quality. - Overall design emphasizes practical protection, durable construction, and clear sound across low, mid and high ranges, delivering strong bass with accurate highs. - Use in a bookshelf or floorstanding speaker crossover to improve bass impact and high-frequency protection in a hi-fi system. - Ideal for DIY speaker projects or upgrades where robust components and reliable HF protection are desired. - Suitable for studio or home listening setups that require protected high-frequency performance and clean, balanced overall sound.