Spectron RC26

Power: 120 W RMS Nominal impedance: 4 ohms Frequency response:  80 Hz - 20 kHz Sensitivity 1 W / 1 m:  86 dB Installation diameter: 140mm Installation depth: 55mm compact basket construction made of sheet steel in Euro-DIN format Strontium ferrite magnet Polypropylene Injection Mebram black foam surround 25 mm voice coil on a Kapton carrier 13 mm tweeter with Mylar dome and ferrofluid-cooled neodymium drive Phase-Plug Dustcap, compact 6/12 dB inline crossover with 2-step reduction for the high frequency level, including mounting adapters for flat or recessed tweeter installation