Real World Gear

Sponsored By

Real World Gear: Subwoofers

The basics of subwoofer operating principles and a look at recent models.
ProSoundWeb

L-Acoustics KS28
l-acoustics.com

Type/Format: Direct-radiating bass
reflex, vented, with standard and
cardioid modes; ground-stack or fly
with integrated hardware
Components: 2 x 18-inch cones (4-inch voice coils) with vented magnets
Frequency Response: To 25 Hz
Max SPL: 140 dB
Nominal Impedance: 4 ohms
Power: 1,225 watts RMS, driven by LA8 amplified controller also offering presets
Dimensions (h x w x d): 21.7 x 51.2 x 27.6 inches
Weight: 205 pounds

dBTechnologies VIO S318
dbtechnologies.com,
americanmusicandsound.com

Type/Format: Bass reflex, semi-horn-loaded; ground-stack and points for rigging frame
Components: 3 x 18-inch cones with 4-inch voice coils
Frequency Response: To 35 Hz (-10 dB)
Max SPL: 143 dB
Nominal Impedance: N/A
Power: Self-powered (class D, 2,700 watts RMS); integrated 64-bit DSP
Dimensions (h x w x d): 20.5 x 51.2 x 31.5 inches
Weight: 229 pounds

QSC KS118
qsc.com

Type/Format: Direct radiating, switchable omni or cardioid modes (minimum 2 units required for cardioid)
Components: 1 x 18-inch woofer
Frequency Response: 41 Hz – 98 Hz (- 6 dB)
Max SPL: 136 dB
Nominal Impedance: Self-powered
Power: Class D, 3,600 watts peak
Dimensions (h x w x d): 25.2 x 20.5 x 30.9 inches (including casters)
Weight: 104 pounds

Martin Audio SXF115
martin-audio.com

Type/Format: Direct-radiating, bass-reflex; ground-stack or fly with integrated hardware
Components: 1 x 15-inch cone (4-inch voice coil)
Frequency Response: 50 – 150 Hz (+/-3 dB)
Max SPL: 136 dB
Nominal Impedance: 4 ohms
Power: 800 watts AES, 3,200 watts peak; iK42, iK81 or MSX power plant recommended
Dimensions (h x w x d): 19.7 x 20.1 x 22.6 inches
Weight: 99 pounds

DAS Audio LX-218CA
dasaudio.com

Type/Format: Direct-radiating bass reflex; cardioid preset switch for
multiples; ground-stack or fly with
integrated hardware
Components: 2 x 18 cones
Frequency Response: 28 – 100 Hz (-10 dB)
Max SPL: 142 dB
Nominal Impedance: N/A
Power: Self-powered (2,400 watts continuous); variable crossover frequency, polarity reversal switch
Dimensions (h x w x d): 22 x 51 x 24.9 inches
Weight: 177 pounds

Electro-Voice X12-128
electrovoice.com

Type/Format: Direct-radiating bass reflex; ground-stack
Components: 2 x EV DVF4180 18-inch cones
Frequency Response: 33 – 200 Hz (-3 dB)
Max SPL: 147 dB
Nominal Impedance: 4 ohms (parallel mode) and 8 ohms (dual mode)
Power: 4,000 watts continuous
Dimensions (h x w x d): 20.4 x 43.5 x 29.9 inches
Weight: 195 pounds

Renkus-Heinz VA15Si
renkus-heinz.com

Type/Format: Direct-radiating bass reflex; ground-stack or fly with integrated hardware
Components: 1 x 15-inch cone with dual suspension
Frequency Response: 40 – 120 Hz (+/- 3 dB)
Max SPL: 128 dB
Nominal Impedance: N/A
Power: Self-powered; non-powered version also available (1,000 watts AES at 8 ohms)
Dimensions (h x w x d): 19 x 24.4 x 22.6 inches
Weight: 120 pounds

CODA Audio SCP
codaaudio.com

Type/Format: Sensor controlled, vented; ground-stack or fly with optional hardware
Components: 2 x 18-inch cones with neodymium magnets
Frequency Response: 25 – 120 Hz (-3 dB)
Max SPL: 144 dB
Nominal Impedance: 4 ohms
Power: LINUS10 DSP amplifier recommended (3,000 watts AES, 12,000 watts peak)
Dimensions (h x w x d): 21.6 x 43.6 x 31.5 inches
Weight: 209.4 pounds

Adamson IS119
adamsonsystems.com

Type/Format: Bass reflex cabinet/vented enclosure
Components: 1 x 19-inch Kevlar neodymium woofer
Frequency Response: 30 Hz – 100 Hz (+/- 3 dB)
Max SPL: 138 dB
Power: Driven by one channel of class D amplification with 3,000 watts total output
Dimensions (h x w x d): 21.4 x 29 x 25.4 inches
Weight: 102.6 pounds

TW AUDiO BSX
twaudio.de

Type/Format: Hybrid, can operate in standard or “Infra-bass/UltraLow Frequency” modes
Components: 2 x 21-inch cones
Frequency Response: 27 – 120 Hz
Max SPL: 142 dB
Nominal Impedance: 8 ohms (x 2)
Power: 2 x 3,600 watts program, 2 x 7,200 watts peak
Dimensions (h x w x d): 23.8 x 55.3 x 35.4 inches
Weight: 240.3 pounds

Alcons Audio BF121
alconsaudio.com

Type/Format: Direct radiating, available in road and installation versions
Components: 1 x 18-inch direct-radiating woofer, vented
Frequency Response: 40 Hz – 300 Hz (+/- 3 dB)
Max SPL: 128 dB driven by Sentinel10 amplified controller; 133 dB comparative
Nominal Impedance: 4 ohms
Power: Sentinel3 or Sentinel10 amplified controllers recommended
Dimensions (h x w x d): 15.7 x 19.7 x 19.7 inches
Weight: 78.3 pounds (install version – 65 pounds)

Church Audio Tech Training Available Through Church Sound University. Find Out More!