[wood grain]

[Black]

The large diameter 7.9 inches (20 cm) A-OMF monocoque woofer unit is driven by the unique digital amplifier technology "VL Digital" which boasts an overwhelming powerful and accurate speaker drive capability. The bass reflector part uses advanced AERO ACOUSTIC DRIVE technology with slit type ducts that suppress the sound that is unique to ordinary cylindrical ducts, providing bass playback with a sense of volume and speed.

From the Manufacturer

The large diameter 7.9 inches (20 cm) A-OMF monocoque woofer unit is driven by the unique digital amplifier technology "VL Digital" which boasts an overwhelming powerful and accurate speaker drive capability.The bass reflector part uses advanced AERO ACOUSTIC DRIVE technology with slit type ducts that suppress the sound that is unique to ordinary cylindrical ducts, providing bass playback with a sense of volume and speed.

SL-D501 TECHNOLOGY

Onkiyo original technology "VL Digital Amplifier" that releases music from noise This is a completely new precision pulse width modulation system that solves the problem of noise pulse width conversion errors which are the factors of sound quality degradation in digital amplifiers.True to the original sound transmission.	AERO ACOUSTIC DRIVE provides high speed bass AERO ACOUSTIC DRIVE is a generic name for Onkiyos proprietary technology that delivers a lower center of gravity and higher speed bass with a lower center of gravity.In this machine, the duct has been made into a slit shape to increase air pressure and produce a low center of gravity and a super bass overflowing with speed.In addition, this technology reduces unnecessary noise that adversely affects sound quality such as wind noise from ducts to the limit, and also increases the low-range playback.	Adopts two types of piano paint finish and real wood veneer finish cabinets. It adopts two types: a high gloss piano finish cabinet for interior decoration and a wood grain cabinet with a natural wood surface veneer.