Introduction

SR Series EQ’s

Congratulations, and thank you for your purchase of DOD equalization compo- nents. DOD equalizers are versatile, cost-effective equalization tools for the musician, performer, studio engineer, and sound contractor. Each equalizer allows the user to see a graphic representation of the equalization applied to the audio spectrum, and offers the flexibility to provide solutions to many EQ problems. The units offer up to 12 dB of cut or boost per band with a switchable low cut filter for each channel. Electronic switching of these functions minimizes switch- ing transients (loud pops or clicks when the switch is depressed), and up to ±12 dB of level control is available to compensate for gain changes due to equaliza- tion. This feature makes A/B comparisons of the equalized signal to the original signal quick and easy. Connection to the equalizer may be either balanced with an XLR connector or with optional unbalanced 1/4" phone plug making the units readily interfaceable to any system. Dual channel units may be used as a stereo equalizer or as two independent equalizers. The units offer either 1/3rd octave or 2/3rds octave resolution, depending on the unit chosen. All DOD equalizers are solidly built with steel chassis and CSA standard circuit boards for years of reliable service.

WHY A 1/3RD OCTAVE OR A 2/3RD OCTAVE EQUALIZER?

Most graphic equalizers divide up the audio frequency range into 1/3rd octave or 2/3rds octave pieces. One octave covers a 2-to-1 range of frequencies. For example, the frequency range form 50 to 100 Hertz is one octave. The audio frequency range covers 10 octaves from 20 Hz to 20 kilo (thousand) Hz. If each of the ten octaves is divided into thirds, you get 30 pieces, or bands, of frequen- cy. (The 31 bands on DOD equalizers result from including both 20 Hz and 20 kHz bands on the ends of the audio frequency range). A 1/3 octave equalizer means that 3 bands span 1 octave, while a 2/3 octave equalizer means that 3 bands span 2 octaves. Therefore, one band on a 2/3 octave equalizer is twice as wide as one band on a 1/3 octave equalizer. So, boosting or cutting any band will affect a wider range of frequencies on the 2/3 octave equalizer.

A 1/3rd octave equalizer is the most precise because you're working with a nar- rower frequency range per band or slider on the equalizer. To cover the entire audio range, you need 31 bands or sliders, which normally take up the entire width of a rack panel, and take some time to adjust properly. A high-resolution real time audio spectrum analyzer (such as DOD's SR Series RTA ) is a very use- ful tool when setting up a 1/3rd octave graphic equalizer to compensate for poor room acoustics, poor speaker response, or the deficiencies of an audio system.

While the 2/3rds octave is not as precise as a 1/3rd, it takes far less time to equalize a signal with this unit, and allows more channels of EQ to be reached. The 2/3rds octave EQ allows you to quickly and easily modify a sound for use in music, recording, or sound reinforcement.

SR430QXLR, SR830ZXLR, SR831QXLR, SR 231QX, SR 430QX, SR 431QX, SR 830QX, SR 831QX, SR431QXLR specifications

The Department of Defense (DoD) has developed a range of advanced technologies and systems under the SR designation that cater to various operational requirements. Among these, the SR830ZXLR, SR430QXLR, SR231QX, SR430QX, SR431QX, SR830QX, SR831QX, SR431QXLR, and SR831QXLR stand out for their unique features and capabilities, each engineered to meet specific mission demands.

The SR830ZXLR is notable for its exceptional processing power and advanced sensor integration. It is equipped with state-of-the-art electronics that allow for real-time data analysis and decision-making. Its long-range communication capabilities ensure seamless information flow, making it an indispensable asset in high-stakes environments.

The SR430QXLR model focuses on enhanced surveillance and reconnaissance tasks. It boasts cutting-edge imaging technologies that support various weather conditions and terrain. The onboard analytics can process and relay critical information to command centers, enhancing situational awareness during operations.

For versatility, the SR231QX provides a balanced approach to performance and durability. It is designed to operate in a multitude of environments, from arid deserts to harsh arctic conditions. Its rugged design ensures longevity and reliability, making it a staple for both ground and air operations.

The SR430QX offers an improved platform for data processing and warfare simulation. With its modular architecture, it can adapt to a multitude of mission requirements, integrating new technologies as they become available. The SR431QX expands on this capability with added features for enhanced maneuverability and combat readiness.

The SR830QX and SR831QX are primarily focused on offensive capabilities, optimized for rapid deployment and engagement. Their lightweight design allows for quick transport, while their advanced weapon systems ensure they are always mission-ready.

The SR431QXLR and SR831QXLR emphasize long-range operational capabilities. These models incorporate advanced propulsion systems that extend their range and endurance, making them suitable for extended missions without the need for frequent resupply.

Together, these SR systems embody the DoD's commitment to leveraging technology for superior operational effectiveness. Each model is a testament to advanced engineering and design, ensuring that U.S. forces maintain an edge in diverse and dynamic combat environments.