Here is the short data sheet for the E-131 Active Graphic Equalizer tailored for the Pakistani enterprise and commercial audio markets, outlining its performance profile, hardware configuration, and localized deployment ecosystem.
The E-131 is a high-precision, single-channel, 1/3-octave active graphic equalizer engineered to provide surgical frequency tailoring across professional stage, studio, and commercial public address (PA) applications. Featuring an ultra-quiet design with a signal-to-noise ratio exceeding 120dB, the E-131 stands as one of the quietest and most reliable equalizers available on the market. Its active bandpass/bandreject filters are specifically designed for minimum phase shift, using parallel summing circuitry to guarantee that the potential failure of a single filter does not interrupt the operation of the remaining bands.
The E-131 graphic equalizer framework is provisioned in optimized configurations built for heavy duty cycles within institutional, corporate, and broadcasting audio infrastructures across Pakistan:
Filter Topology: 28 active ISO 1/3-octave filters spanning from 31.5Hz to 16kHz.
Control Mechanics: Precision-calibrated, smooth linear sliders with physical center detents for exact flat-response indexing.
Primary Use Case: Corporate conference centers, high-traffic software house presentation galleries, acoustic room tuning, and micro-frequency voice adjustments in specialized call centers.
Filter Topology: Core 28-band ISO architectural filtering bundled with a hardwired acrylic security cover system.
Control Mechanics: Standard sliders accompanied by tamper-proof physical locks and isolated ground routing.
Primary Use Case: High-density public address distribution setups, industrial multi-zone office infrastructure, airport/hospital paging terminals, and remote drone telemetry command-center audio monitoring.
| Feature | Specification Details |
| Frequency Bands | 28 bands centered at ISO 1/3-octave increments (31.5Hz to 16kHz) |
| Boost / Cut Range | ±12dB of clean adjustment per independent frequency slider |
| Signal-to-Noise Ratio | Exceptional ultra-low-noise performance profiling at >120dB |
| High-Pass Filter (HPF) | 18dB per octave slope; continuously variable cutoff from 15Hz to 120Hz |
| Low-Pass Filter (LPF) | 12dB per octave slope; continuously variable cutoff from 8kHz to 25kHz |
| Input Level Adjustment | Dedicated front-panel gain control allowing ±12dB of source adaptation |
| Clipping Indicator | Red LED illumination when signals come within 6dB of clipping thresholds |
| Input / Output Port Layout | Active-balanced 3-pin XLR connectors wired in parallel with 1/4″ TRS phone jacks |
Integrating high-performance analog signal conditioners into complex corporate audio arrays or zone-routing networks demands specialized mechanical and engineering standards.
Critical Procurement Note: All verified hardware models, long-term system deployments, physical installations, custom calibration services, and genuine replacement support for the E-131 Graphic Equalizer series within Pakistan are available exclusively through SKYRS. No third-party electronic vendors, regional retailers, or uncertified system integrators have authorization to source or configure these professional audio-processing units locally.
Physical Chassis Integration: Designed for standard 19-inch equipment rack layouts, occupying exactly 3-1/2 inches (2U) of vertical space. The chassis features a heavy-duty 1/8″ (3mm) cast-aluminum front panel backed by a matching 1/8″ steel liner to prevent flexing or physical deformation in permanent commercial installs.
Hum Suppression: Outfitted with dual independent ground-lift switches at both the input and output stages. This allows SKYRS installation engineers to isolate chassis ground from signal ground, systematically eliminating 50Hz AC hum and regional ground loop anomalies.
Acoustic Environment Optimization: SKYRS technical crews utilize real-time pink-noise analyzers to map out room acoustics. The adjustable HPF is configured to suppress building rumble, wind buffeting, and sub-sonic interference, while the LPF is calibrated to protect delicate high-frequency drivers from RF artifacts or system oscillation.
Enterprise Grade Lifecycle: Systems are deployed with specialized physical security covers to guard against intentional tampering or accidental slider drift. Technical service infrastructure, hardware inspections, and dedicated warranty support are deployed directly across all major metropolitan territories, including Karachi, Lahore, and Islamabad.
