Duelund Coherent Audio are widely acknowledged for designing and manufacturing the world’s finest capacitors, inductors, resistors and cables. Their resistors are specifically designed for loudspeaker crossover use. Constructed from a graphite rod with silver terminals in a phenolic cylinder for protection. They have practically zero inductance, with a 5% tolerance. The special charcteristic about this resistor is that it displays a negative temperature coefficient. For example, when the voice coil of a speaker heats up, it's impedance rises. The DUELUND Graphite Resistor counteracts this by means of a decreasing impedance. The results are greatly improved dynamics from the driver.