Altec 604E Super Duplex Speaker
15" Duplex Speaker
Magnets: Alnico V
Power Rating: 35 watts, 50 peak
Sensitivity: 100dBSPL/1W/4ft or 115.4dB w 35 W
Free Air Resonance: 32Hz
Response: 20Hz - 22kHz
Crossover: 1500 Hz
Network: N-1500-A (series filter - first order high pass and second order low pass with h.f. shelving control)
Impedance: "8 to 16 ohms" - nominally 16 ohms
Phase Plug: Circumferential
HF horn: 6-section sectoral-style horn with divider vanes - 90° horizontal and 40° vertical
Cone: paper w/ viscous compliance damping and annular spider (accordion)
Frame: 15.2" cast frame, rear mount, white basket and gray paint on motors
Weight: 34 lb. including network