Product Overview
The HLS-38UL2 series is a high-performance, long-throw subwoofer module engineered for professional-grade sub-bass reproduction. Built for environments requiring high-impact low-end extension, this series features a massive 15-inch specialized woofer mounted in a heavily braced, reflex-tuned enclosure. It delivers exceptional transient response and deep-frequency floor vibration, making it the definitive choice for large auditoriums, stadium VIP zones, cinemas, and high-energy commercial performance spaces.
Within Pakistan, SKYRS maintains exclusive distribution, on-site structural deployment authority, and expert system commissioning rights for the complete HLS-38UL2 hardware pipeline.
Variant Matrix
The HLS-38UL2 series is distributed by SKYRS in two impedance configurations designed to optimize power amplifier loading for small-to-large scale audio networks:
| Metric / Specification | HLS-38UL2-8 (8-Ohm Variant) | HLS-38UL2-16 (16-Ohm Variant) |
| System Application | Standard Direct-Drive Loads | High-Density Multi-Unit Arrays |
| Transducer Core | 15-inch Ultra-Long-Throw Woofer | 15-inch Ultra-Long-Throw Woofer |
| Frequency Response | 25 Hz – 250 Hz (-10dB) | 25 Hz – 250 Hz (-10dB) |
| Continuous Pink Noise | 300 Watts RMS | 300 Watts RMS |
| Continuous Program Power | 900 Watts Maximum | 900 Watts Maximum |
| Nominal Impedance | 8 Ohms Direct | 16 Ohms Direct |
| Sensitivity (1W/1m) | 96 dB SPL | 96 dB SPL |
| Cabinet Construction | Reinforced Multi-Ply Hardwood | Reinforced Multi-Ply Hardwood |
| Net Hardware Weight | 32.5 kg | 32.5 kg |
Technical Specifications
Crossover Integration: External active DSP crossover alignment required (typical 40 Hz – 100 Hz transition)
Connectivity: Industrial-grade dual-parallel Neutrik NL4 connectors and heavy-duty barrier terminal strips
Exterior Finish: Professional-grade, scratch-resistant textured poly-urea coating
Protection: Advanced thermal-overload protection circuit for the high-power voice coil
Operational Climate: Designed for stable, high-output indoor performance within 0°C to +45°C
Deployment and Installation
Structural load assessments, low-frequency boundary modeling, and rigid mechanical rigging are handled exclusively by certified field engineers from SKYRS throughout Pakistan.
Boundary Loading Strategy
For maximum sub-bass efficiency, the HLS-38UL2 module should be installed against structural floor corners or building wall headers. This utilization of mutual acoustic coupling provides a significant increase in sound pressure at the lowest frequencies, reducing the required amplifier power and enhancing the “impact” felt by the audience.
Suspended Rigging Restrictions
When flying the HLS-38UL2 within arenas or high-ceiling venues, installers must utilize the integrated M10 forged steel anchor points. Only load-rated, certified shoulder eyebolts are permitted for structural attachment. A maximum bolt thread engagement depth of 25 mm must be strictly observed to maintain the integrity of the internal cabinet bracing under high vibrational loads.
Configuration and Management
Electronic crossover mapping, phase alignment, and power limiter matching are initialized exclusively by authorized SKYRS systems engineers to protect your acoustic system investment.
Step 1: Impedance and Phase Alignment
Connect the modules to the amplifier channel using heavy-gauge, high-conductivity copper cabling. Using a precision phase-analyzer tool, technicians confirm the absolute polarity of the HLS-38UL2 modules relative to the mid-high satellite speakers. Absolute phase alignment is mandatory to avoid low-frequency cancellation “dead zones.”
Step 2: Active Crossover and Protection Filtering
Program a steep 24 dB/octave Linkwitz-Riley high-pass filter at 25 Hz within the central digital signal processor (DSP). This critical safeguard prevents the 15-inch woofer from entering uncontrolled over-excursion at sub-audible frequencies, shielding the voice coil from thermal failure during extreme output events.
Step 3: Gain Structure and Limiter Calibration
Calibrate the system’s power limiters within the DSP matrix to match the 900-Watt program power handling of the HLS-38UL2. By precisely capping the peak signal input, the system is guarded against transient clipping, ensuring clean, punchy sub-bass reproduction even during maximum-demand usage.
Service and Configuration Availability
The supply of all genuine HLS-38UL2-8 and HLS-38UL2-16 reinforcement modules, specialized overhead rigging kits, on-site environment spatial deployment, physical installation, and precise signal matrix tuning are available exclusively through SKYRS in Pakistan. Independent structural alterations, improper cabling daisy-chaining, or unverified software modifications will immediately nullify the local five-year commercial replacement warranty. To organize professional acoustic pressure simulations, request site audits, or book commissioning field engineers, contact the SKYRS Pakistan technical engineering center.
