The LDW7, Mid Woofer from CSS Audio

The unit has all the good stuff. The motor features aluminum shorting rings to stabilize the cone from overshoot and has a copper-capped pole piece to limit distortion.

The cone is a paper and fiberglass mix that gives good stiffness yet a smooth extended response.

The parameters of this woofer allow both vented box and sealed box designs.

Jeff Bagby recently auditioned these and his comments: “I can’t remember ever seeing anything that measured this flat. The distortion signature is extremely good too, pretty much state of the art. This driver competes against anything I have ever seen. It is top tier”.

• Imp – 8 ohm
• Fs – 30Hz
• Qts – .37
• Qes -.39
• Qms – 9
• Vas – 31L
• Rms – .45
• Mms – 21.9g
• SPL – 86dB
• Xmax – 5.5mm
• Dia. – 182mm
• Cut out – 153mm
• Depth – 88mm

CSS, LDW7 Data Sheet