Detailed Description

The Acurus ACT-3ABM is a breakthrough in surround sound processing. The approach we have taken in engineering the ACT-3ABM is unique. It is an American original, fully engineered and made in the U.S.

Beginning with a clean sheet of paper, the overriding goal was exceptional audio and video performance. This meant that although useful features are important, they would not be allowed to compromise performance. We also understood that it needed to be engineered maintaining the standard that Acurus is internationally known for, the finest value in audio.

DIGITAL

Processor
Our advanced processor takes the digital stream and converts it, via mathematical algorithm, to the six channels of information used for Dolby ProLogic®, Dolby Digital®, DTS® or MPEG-2®. Each of these modes has a specific algorithm dedicated to its function. The method in which the ACT-3ABM handles these algorithms is different. Our Digital Signal Processing chip is capable of processing the bit stream at the highest rate of any surround sound processor.

D/A Converters
After the bit stream is divided into multiple channels by the processor, it is then converted into an analog signal by digital to analog (D/A) converters. The ACT-3ABM employs 20-bit D/A conversion for all six channels. In stereo mode, the ACT-3ABM is an exceptional D/A converter. Full 20-bit conversion ensures high quality sound for all channels and seamless transition when sound travels from one speaker to another or is located between speakers.

ANALOG

Video Output
The video stage is engineered to be as transparent as possible. Components, such as on-screen display generators, have been eliminated from the signal path. This ensures that the ACT-3ABM's video output will be the same as the original source signal, even when viewed on a large screen.

Audio Output
The output stage is DC coupled for the deepest possible bass response. Instead of rolling off bass response at 20Hz, the Acurus ACT-3ABM is capable of reproducing the deepest bass that digital audio can deliver. The discrete output transistors operate in Class A for clarity, smoothness and detail.

Volume Control
Engineered for superior sonic performance, the ACT-3ABM's volume control is a combination of the latest in digital and analog technology. Many surround sound preamplifiers use only a digital volume control. The problem with this approach is that it lowers the volume by reducing the number of bits (bit scaling). To maintain our full 20-bit resolution, the ACT-3ABM has precision analog volume attenuators that are controlled digitally. The outcome is a combination of extreme sonic detail and precise localization of image throughout the entire soundfield.

FEATURES

Upgrades
The ACT-3ABM has the ability to be both software and hardware upgraded. Many of its controls and operations reside in the proprietary software programs. These programs are accessible for future upgrading. It now comes with one upgrade-our proprietary advanced bass management system. Our modular design is engineered to take full advantage of future advancements. It allows for hardware upgrades in both digital and analog circuitry.

Mode Settings Recall
Each format requires a different channel balance. Unlike other surround processors, the ACT-3ABM allows a different balance setting to be stored in memory for each surround mode. When any mode is activated, its pre-stored setting is automatically recalled. Front/rear balance, center channel volume and subwoofer volume for a particular movie or recording can be easily changed to suit your listening preference. The original settings are restored with one touch of a button.

System Remote Control
The programmable ACT-3ABM remote has codes for over 500 different components stored in its memory. This easy to use remote gives instant access to all functions of the ACT-3ABM and other components in your home theater system. In addition, the remote offers advanced features such as channel and volume punch though, back-lit buttons and five macro controllers.