The 18 PRO SUB Passive Sealed Shallow is a 18″ passive cinema / hifi subwoofer, in a sealed enclosure, tuned to fit the ASCENDO speaker series for an uncompromising cinema / hifi experience.

It meets the highest demands in low end control and extension, dynamics, sound pressure and playback quality.

The 18 PRO SUB Passive Sealed Shallow offers features such as 2500W RMS power handling and 133 dB SPL peak.

he18 SUB PRO PASSIVE SEALED SH subwoofer is so far above and beyond the competition in every aspect; refined musicality, tightness, and output levels suitable for a 18″ driver. Combine this exceptional performance with an enclosure only 10,43” deep to accommodate a wider range of applications where larger enclosures just can’t fit, and this model could possibly take the home theater market by storm.

The 18” driver is an advanced carbon rohacell composite sandwich cone. It is coupled with a neodymium motor with 4” Ultra-high-temperature voice coil. With a max SPL of 137dB @100Hz an , the dynamic expression and percussive impact that this sub can deliver puts it in a class by itself, let alone in such a shallow footprint as to almost disappear in home theaters or media rooms when compared to more traditional cube subwoofer designs.

In larger rooms where more output is needed (or just desired), ASCENDO also offers a Dual-18” version of this same enclosure design, with the two woofers stacked – The18-2 SUB PRO PASSIVE SEALED SH. The 143dB SPL @100Hz capability of this 48” high, 24” wide and only 11” deep defies belief until experienced.

Both models are engineered to operate perfectly in sync (in phase) with our Infrasonic subwoofers; The24, The32, The50 and The80 when there is a desire to reproduce movie content below 20Hz with the same authority, precision, and musicality. The combined results sound (and feel) like seamless and natural extensions of their individual efforts, adding to the overall addictive, immersive quality of a complete ASCENDO system.

• Technology : Sealed bass design.

• Voice Coil Design : Neodymium motor with 4” (10cm) ultra-high-temperature voice-coil and triple shorting rings

• Power handling : 2500W RMS (4 ohm impedance)

• Efficiency : 88 dB/1W/m

• SPL : 133 dB @63Hz peak

• Frequency response (-3dB) : 33Hz-400Hz

• Woofer : Custom built forward-firing shallow 18“ (46 cm) woofer. Advanced carbon rohacell composite sandwich cone

• Woofer excursion : 23mm max linear woofer excursion each direction (voice coil remaining in homogeneous magnetic field, linear and lowest distortion

• Air volume displacement : 2.66 L (compared to 1.1 L for typical 18” subwoofer)

• Cabinet design : MDF and Birch Plywood, internally braced

• Finish : Matt Black

• Dimensions : 537 x 265 x 677 mm (Width x Depth x Height)

• Net weight : 36 kg

NOTE : Recommended ASCENDO DSP Amplifier: DSP4-10K4, DSP4-6K2