Real World Gear

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Real World Gear: Subwoofers

The basics of subwoofer operating principles and a look at recent models.
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Ramsdell BPSD21 Sub Engine S2
ramsdellproaudio.com

Type/Format: Double-tuned band pass
Components: 1 x 21-inch neodymium cone
Frequency Response: 32 – 300 Hz (+/- 3 dB)
Max SPL: 138 dB
Nominal Impedance: 8 ohms
Power: 4,000 watts program
Dimensions (h x w x d): 30 x 25.5 x 30 inches
Weight: 150 pounds

Verity Audio SUB136TP
vaudiopro.com

Components: 2 x 18-inch ferrite woofers
Frequency Response: 28 Hz – 1.4 kHz (-10 dB)
Max SPL: 141 dB
Nominal Impedance: Self-powered
Power: Class D, 2 x 1,200 watts (2,400 watts total, AES)
Dimensions (h x w x d): 19.7 x 41.7 x 37.4 inches
Weight: 238 pounds

VUE Audiotechnik al-8SB
vueaudio.com

Type/Format: Direct-radiating bass reflex, supports cardioid configurations; ground-stack or fly with integrated hardware
Components: 1 x 18-inch (4-inch voice coil) cone
Frequency Response: 36 – 200 Hz (+/-2.5 dB)
Max SPL: 142 dB
Nominal Impedance: 8 ohms
Power: V Systems Engine recommended (provides power, DSP, optimization)
Dimensions (h x w x d): 20.5 x 18.9 x 19.7 inches
Weight: 140 pounds

Clair Brothers iS218-M
clairbrothers.com

Type/Format: Direct radiating in a tuned dual-chamber, dual-reflex enclosure; ground-stack or fly with integrated hardware
Components: 2 x 18-inch cones
Frequency Response: 38 – 180 Hz (+/- 2 dB)
Max SPL: 134 dB
Nominal Impedance: 4 ohms
Power: 2,400- to 4,000-watt amplifier recommended
Dimensions (h x w x d): 25.2 x 42 x 27.1 inches
Weight: 214 pounds

Yamaha DXS18
yamahaproaudio.com

Type/Format: Band-pass design, selectable cardioid mode
Components: 1 x 18-inch cone (4-inch voice coil)
Frequency Response: 32 – 120 Hz (- 10 dB)
Max SPL: 136 dB
Nominal Impedance: Self-powered
Power: Class D, 800 watts continuous, 1020 watts peak
Dimensions (h x w x d): 26.8 x 22.2 x 28.4 inches
Weight: 110 pounds

Meyer Sound 1100 LFC
meyersound.com

Type/Format: Direct-radiating bass reflex, vented; ground-stack or fly with integrated hardware
Components: 2 x 18-inch cones
Frequency Response: 30 – 85 Hz (+/- 4 dB)
Max SPL: N/A
Nominal Impedance: N/A
Power: Self-powered (2-channel Class AB/H amplifier with complementary MOSFET output stages)
Dimensions (h x w x d): 20.5 x 52.6 x 33 inches
Weight: 249 pounds

FBT SUBLine 18Sa
fbtusa.com

Type/Format: Direct-radiating bass reflex; ground-stack
Components: 1 x 18-inch cone (custom B&C)
Frequency Response: 33 – 140 Hz (-6 dB)
Max SPL: 133 dB
Nominal Impedance: N/A
Power: Self-powered (class D, 1,200 watts RMS), DSP with presets, polarity reverse switch; non-powered version also available
Dimensions (h x w x d): 24.7 x 20 x 25.6 inches
Weight: 92.6 pounds

WorxAudio TL118SS
commercial.presonus.com

Type/Format: Direct-radiating, omni or cardioid modes
Components: 1 x 18-inch cone (2.5-inch voice coil)
Frequency Response: 26 – 150 Hz (-3 dB)
Max SPL: 136 dB
Nominal Impedance: 4 ohms
Power: Self-powered by PXD-2500 amplifier (2,500 watts)
Dimensions (h x w x d): 22.5 x 28 x 30 inches
Weight: 135 pounds

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