Q-SYS LF-4215-8F High-Power Low-Frequency Flyable Cabinet - Dual 15-Inch 8-Ohm 99.5 Db Sensitivity
The LF-4215-8F dual 15' (381 mm) low-frequency enclosure is a must-have for large format cinema applications! It meets cinema requirements for extended low-frequency response, making it stand out from conventional woofer systems.
• Covers 35 Hertz to 1000 Hertz frequency range, depending on high-frequency system needs.
• 8 ohm version, designed for safe and easy suspension via M10 fly points. Its tour grade construction is strong and lightweight.
The two custom 400 watt, 15' transducers are perfect for cinema. They have large 4' (100 mm) voice coils and multi-vented pole pieces for cool operation even at high power. This increases transducer lifespan and reduces power compression.
The enclosure has Single Woofer Chambers (SWC) and large, Fully Radiused Ports (FRP) for smooth air flow and to prevent port turbulence noise. Symmetrical Port Loading (SPL) keeps internal pressure uniform.
Sixteen M10 mounting points provide a safe way to suspend the enclosure. Always consult a licensed structural engineer for mounting approval.
Features:
- ¡°Flyable” dual-woofer screen channel speaker system
- Constructed of heavily braced, 15 mm tour-grade plywood
- Sixteen M10 fly points per enclosure for safe and easy suspension
- Common dimensions of Mid/Hi and LF enclosures facilitate easy installation in vertical or horizontal arrays
Specifications:
- Frequency Range:
- ±3 dB: 38 – 1000 Hz
- -10 dB: 30 – 1200 Hz usable range
- Maximum Output: 134.5 dB SPL calculated peak
- Impedance: 8Ω nominal
- Maximum Input Power:
- 100 hours of 6 dB crest factor pink noise, 30 – 500 Hz: 800 watts
- 2 hours of 6 dB crest factor pink noise, 30 – 500 Hz, AES method: 1000 watts
- Sensitivity (half space / watt / 1 meter):
- 99.5 dB half space
- 96.5 dB full space, 35 – 1000 Hz, 1 watt, 1 meter
- Transducers:
- Two 15' (381 mm) high-efficiency, low-frequency transducers
- Vented 4' (100 mm) copper voice coils
- High-excursion/low-distortion design with high-power handling and low thermal and port compression
- Recommended Processing:
- Subsonic filter below 30 Hz, >18 dB per octave
- Maximum recommended crossover frequency: 1000 Hz
- Nominal Coverage: 135° horizontal x 50° vertical at 500 Hz
- Connectors:
- Neutrik speakON NL4
- LF: 1+, 1-
- No Connection: 2+, 2-
- Enclosure:
- Heavily braced 15 mm tour-grade plywood
- 16 M10 load-rated attachment points
- Dimensions (HWD):
- Inches: 40' x 31.5' x 19'
- Millimeters: 1016 mm x 800.1 mm x 482.6 mm
- Shipping Weight: 142 lb / 64.4 kg
- Net Weight: 134 lb / 60.8 kg
This Q-SYS LF-4215-8F is perfect for large format cinema applications. It has a dual 15' (381 mm) low-frequency enclosure. The dimensions are 40' x 31.5' x 19' (1016 mm x 800.1 mm x 482.6 mm) and shipping weight is 142 lb / 64.4 kg, net weight is 134 lb / 60.8 kg. It's a great choice for those looking to enhance their cinema audio experience.
