B&W 640
Specifications:
Type: 3 way, 4 driver loudspeaker system
Frequency Response: 46Hz to 20kHz
Recommended Amplifier: 25 to 150W
Crossover Frequency: 300, 3000Hz
Impedance: 8Ω
Sensitivity: 91dB
Bass: 2 x 200mm cone
Midrange: 1 x 160mm cone
Tweeter: 1 x 26mm dome
Dimensions: 965 x 236 x 407mm
Weight: 24kg
B&W 640i
Specifications:
Type 3-way 4th-order, variable port, bass
reflex digital monitor system with bi-wiring
1 x 26mm high frequency with metal
dome, high temperature voice coil and
fluid cooling
1 x 160mm midrange with rigid die-cast
chassis, Kevlar® diaphragm and 31mm
high-temperature voice coil on Kapton®
former
2 x 200mm bass/midrange with rigid
die-cast chassis and 31 dia hightemperature voice coil on Kapton®
former
Frequency response: 46Hz – 20kHz ± 2dB on reference axis
Sensitivity: 91dB spl(2.83V 1m)
Nominal impedance: 4 ohms
Power Handling: 30W – 200W into 4 ohms
Dimensions: Height: 965mm Width: 236mm
Depth: 407mm