HS8S

The Yamaha HS8S 8” bass-reflex powered subwoofer delivers low frequencies down to 22Hz.

From the Manufacturer:

Ever since the 1970's the iconic white woofer and signature sound of Yamaha's nearfield reference monitors have become a genuine industry standard for a reason - their accuracy. Unlike studio monitors with added bass or treble frequencies which may sound more flattering at first, HS Series speakers were designed to give you the most honest, precise reference possible, providing an ideal sonic platform to build on throughout the mixing process. By combining acquired knowledge and expertise with state-of-the-art sound technologies, Yamaha's speaker engineering team have examined, then optimized, every aspect that has contributed to making these monitors the most trusted in the business. The second generation HS Series also adds a new 6.5" model to the lineup, bringing its exceptional accuracy to an even greater variety of recording environments.

Features:

• Newly Developed Transducers: With newly designed, ultra-responsive woofers that utilize large, carefully selected magnets, HS Series monitors produce low distortion sound with a well-defined bottom end at any output level. All of the components in these high-power woofers, including the woofer ring and the basket further contribute to the HS Series' stunning bass while providing clear, accurate mids.
• Low Resonance Enclosure Design: HS Series cabinets are designed to eliminate unwanted resonance and increase the accuracy of sound reproduction to their extreme limit. The enclosures are constructed from a very dense and resilient MDF with a damped acoustic response that is perfectly suited for reference monitors. Drawing from Yamaha's over 100 years of piano design experience, HS Series engineers also employed a traditional three-way mitered-joint technique. Common to architectural design this construction firmly anchors the corners of the enclosure to dramatically improve durability and eliminate unwanted resonance that can influence overall sound.
• Cutting Edge Noise Reduction Technology: Speaker port design can greatly influence the clarity of overall sound. Often a vortex at the either end of the port can generate air vibrations inside of the port, causing unwanted noise. By adopting an advanced noise reduction technology that incorporates a thorough analysis of a visual representation of the sound, Yamaha's engineers are able to control and reduce the vortex. Through this in-depth analysis we have arrived at the ideal port design, resulting in a reduction of audible noise up to 6dB. The utilization of this state-of-the-art technology allows HS Series studio monitors to meet the demands of more strict professional production environments.
• Controls and Connectivity: HS Series full-range models feature two response controls with detailed settings that allow them to adapt to the surface acoustics of rooms of varying shape and size. ROOM CONTROL allows you to attenuate the unnatural, exaggerated low-end that can often occur when speakers are placed next to walls, while HIGH TRIM allows for more flexible control of high frequency response. For inputs, HS full-range speakers can accommodate a wide range of balanced and unbalanced sources such as mixers, keyboards and audio interfaces with XLR and TRS phone jacks.
  With the HS8S subwoofer, HIGH CUT control sets the cutoff frequency of subwoofer output high-frequency attenuation from 80Hz to 120Hz, while PHASE switch adjusts the phase of the subwoofer output. The LOW CUT switch and LOW CUT controls enables attenuation of low frequencies for output between 80Hz and 120Hz. The HS8S subwoofer is equipped with XLR and TRS phone jack inputs and for outputs XLR for L and R and EXT SUB out.

Specifications:

• 8" bass-reflex powered subwoofer delivers low frequencies down to 22Hz
• 22Hz - 150Hz frequency response
• High-power 150W amplifier exclusively designed for low frequencies
• LOW CUT switch, LOW CUT control (80-120Hz) HIGH CUT control (80-120 Hz)
• PHASE switch allow users to set up a subwoofer system with simple connections and no additional equipment
• XLR and TRS phone for outputs and XLR for L and R and EXT SUB
• Speaker type: Powered subwoofer
• Frequency range (-10dB): 22Hz - 160Hz
• Components: LF: 8" cone
• Output power: 150W
• I/O connectors: INPUT: XLR3-31 type (balanced) x2, PHONE (balanced) x2 / OUTPUT: XLR3-32 type (balanced) x2 (L&R), XLR3-32 type (balanced) x1 (EXT SUB)
• Power consumption: 70W
• Shape: Bass-reflex type
• Cabinet material: MDF
• Dimensions: W: 300mm (11.8")
• H: 350mm (13.8")
• D: 389mm (15.3")
• Net weight: 12.5kg (27.6 lbs.)
• Others: LEVEL control, PHASE switch : NORM./REV., HIGH CUT control (80-120Hz, center click), LOW CUT control (80-120Hz, center click), LOW CUT switch (ON/OFF)