DD Audio Redline 508d D2 subwoofer 8" (200 mm).

DD Audio Redline 508d D2 (500 series) subwoofer 8" (RMS 400 W, 2+2 Ohm, 200 mm).

Completely renewed Redline 500-series offers many advantages over the older design. 
Redesigned frames and suspension geometry allow lower Fs and greater excursion potential. 
These two things combined give you a LOT OF BASS especially at lower frequencies. 

Revised voice coils have increased thermal handling , reduced inductance and increased efficienfy. 
These features give you smoother response, more output with same amplifiers and more power handling. 
Aesthetic improvements are also made. 
Red double stitching no more exists, redline is now visible between cone and thermoformed multilayer surround. 
Dustcap-logo is made of reflective foil layer. All cones and dustcaps have now black matte finish. 
All frames have DD branding. 
Triple ventilation of voice coil, laminated spiders and extended pole pieces that have made DD subwoofers so outstanding, are still present in these new models. 
Redline 500-series subwoofers have 2″ voice coils available in dual 2 or 4 ohms. 

* Available sizes are 6.5″, 8″, 10″ and 12″.

- mounting diameter: 183 mm
- mounting depth: 127 mm
- x-mech: 64 mm
- x-max: +- 10 mm
- fs: 37,68 Hz
- qts: 0,4526
- vas: 8,813 litraa
- recommended ported enclosure: 21-35 liter ( NET )
- recommended sealed enclosure: 10-17 liter ( NET )