Blue Sky Introduces SAT 8 and SUB 212 |

March 12, 2009


The SAT 8 and SUB 212’s Sealed-Box Design, Combined With Sophisticated Bass Management Electronics, Provides A Seamless Transition Between SAT & SUB. The End Result Is A Stunningly Accurate Full-Range Monitoring System.

By Diane Gershuny:

World-renowned for their accurate, full-range sound, Blue Sky is pleased to introduce two new critical listening components to its full line of monitoring solutions: SUB 212 400-Watt Push-Pull Active Subwoofer and the SAT 8 300-Watt, Compact Mid-Field Monitor. The SUB 212 is designed to be an integral part of the monitoring system, enabling a studio monitor, such as the SAT 8, to be positioned for the best imaging, and the SUB to be positioned for the best bass response. Relieving the studio monitor of the requirement to reproduce the low frequencies means that the uncompromising sealed-box design can combine with sophisticated bass management electronics to provide a seamless transition between the SAT and SUB. When combined, the SAT 8 and SUB 212 provide a stunningly accurate and engaging, full-range monitoring system.

“Our customers were asking for a powerful system that was similar to the Sat 12 and Sub 15, but in a smaller package,” said Blue Sky Vice President Chris Fichera. “The Sat 8 and Sub 212 will address those applications.”

Blue Sky's SUB 212 (Shown with Grille)

SUB 212 | Shown with Grille

About The SUB 212

Blue Sky’s SUB 212 is a sealed box, dual 12”, push-pull, 400-Watt subwoofer. It features an anechoic frequency response of 25Hz to 200Hz, +/-3dB. In addition, the SUB 212 also has built-in 2.1 bass management electronics with both a 4th order 80Hz Linkwitz-Riley low-pass filter and a 2nd order 80Hz high-pass filter that is perfectly matched to the response of the SAT 8 (the SUB 212 is also compatible with the SAT 12, SAT 6.5 and SAT 5).

The SUB 212’s unique “push-pull” configuration is designed not only to increase output, but also to reduce distortion. A push-pull subwoofer uses two drivers: one mounted facing forward, the second mounted backward with the magnet facing out. Utilizing two drivers doubles the maximum output, while the push pull configuration reduces even harmonic distortion. Typically, in a more conventional design, at high output levels, second harmonic distortion dominates the distortion spectrum of most subwoofer drivers and is caused by asymmetric operation of the suspension and magnetic structure. In simple terms; the output of the driver is slightly different when the cone is moving away from the magnet, as compared to when it is moving toward its magnet.

SUB 212 Back Panel Electronics

SUB 212 | Back Panel Electronics

Push-pull operation reduces this even harmonic distortion in a clever application of physics. As mentioned before, push-pull uses two drivers, one reversed from the other. The bottom driver has its magnet facing out of the box and is driven electrically out–of–phase from the front driver, which keeps both drivers acoustically in phase. However, when the front driver’s cone is moving away from its magnet, the bottom driver’s (reversed) cone is moving towards its magnet. This puts the even harmonic distortion components of the bottom driver out-of-phase with the front driver. When you combined the outputs of both drivers, the even harmonic distortion of both drivers cancels, reducing the overall distortion of the subwoofer.

Blue Sky's SAT 8 (vertical configuration)

SAT 8 | vertical configuration

About The SAT 8

Blue Sky’s SAT 8 is a three way, tri-amplified, 300-Watt, compact mid-field monitor which features an 8” high excursion hemispherical woofer, an ultra low distortion 4” hemispherical midrange driver, and a 1” dual ring radiator tweeter with integral waveguide, for superior off-axis response. To reduce destructive cabinet diffraction reflections, Blue Sky has developed and incorporated into the baffle, the proprietary “Multi-Aperture Acoustic Diffraction Absorber”, which helps to maintain smooth on and off axis frequency response throughout the critical MF and HF frequency range, without the need for a large wave-guide or horn.

SAT 8 Back Panel Electronics

SAT 8 | Back Panel Electronics

The SAT 8 is powered by a dedicated low distortion 100-Watt amplifier for the 8” woofer, a low distortion 100-Watt amplifier for the midrange, and a low distortion 100-Watt amplifier for the tweeter. The SAT 8 effortlessly delivers clean and accurate sound with a frequency response of 80Hz to 30kHz +/-3.0dB (200Hz to 15kHz +/-1.5dB), for full compatibility with Blue Sky’s SUB 15 Universal, SUB 212, SUB 12 and BMC (Bass Management Controller). The rear panel also has controls for “full space” (placement in a room) or “half space” (mounted in a baffle wall) operation, along with individual HF, MF and LF level trims, as well as controls for variable gain settings.

The SAT 8 is designed to operate both vertically or horizontally, thanks to the rotatable MF/HF plate.

To read about and see pictures of the first installation of Blue Sky’s SAT 8 and SUB 212, follow this link.

About Blue Sky:

Blue Sky International currently markets a wide array of award-winning, full-range monitoring systems. The Blue Sky core philosophy is the utilization of bass management technology with subwoofers to satisfy the demanding requirements of audio professionals. These systems are also ideally suited for those home audio enthusiasts looking for a superior sound experience.

Blue Sky International was founded, and is jointly owned by Group One Ltd. and Audio Design Labs Inc. The company was established by combining the marketing, sales and distribution expertise of Group One Ltd. with the knowledge and experience of Audio Design Lab’s award-winning design team. more »

For more information about Blue Sky International, please visit:


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