Owner's Manual

3
4
Connections
Normal Connection
Amplifier connections to the LF-4215-8F are made on the rear panel via a Neutrik NL4P Speakon
TM
connector supplied by the installer. This connector
provides power to both woofers of the LF-4215-8F via the 1+ and 1- terminals. The woofers are internally wired in parallel. Pre-made Speakon cables
using high grade, 2 or 4 conductor stranded wire are readily available from a number of suppliers and is highly recommended.
Specifications
LF-4215-8F
Frequency Range
±3 dB 38 – 1000 Hz
-10 dB 30 – 1200 Hz useable 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 featuring vented 4" (100 mm)
copper voice coils on Kapton
TM
formers. High-excursion/low-distortion design, with extremely
high-power handling, and low thermal and port compression.
Recommended Processing Subsonic filter below 30 Hz, >18 dB per octave, maximum recommended crossover frequency is
1000 Hz. QSC DSP configurations are available at www.qscaudio.com. Parameters for alternative
processing hardware are available upon request.
Nominal Coverage 135° horizontal x 50° vertical at 500 Hz
Connectors Neutrik Speakon
TM
NL4, LF 1+, 1-, No Connection 2+, 2-
Enclosure Heavily braced 15 mm tour-grade plywood with 16 M10 load-rated attachment points.
Dimensions (HWD)
40" x 31.5" x 19" (1016 mm x 800.1 mm x 482.6 mm)
Weight Shipping 144 lb / 65 kg
Net Weight 134 lb / 61 kg
INPUT
PINOUT
MF No Connection
1+ 1- 2+ 2-
POS NEG N/A N/A