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MD Powered Series

MD Series Subwoofers S-215 & S-218

MD-SP215 & MD-SP218 Powered Subwoofers


The MD (ModularDesign™) Series Powered Subwoofers combine the superb loudspeaker performance of MD series installation loudspeakers with the latest generation of QSC's amplification and signal processing technologies. These models are designed to complement the capabilities of MD Powered full range loudspeakers by extending frequency response into and below the lowest octaves of the audible range.

The MD-SP215 and MD-SP218 subwoofers offer dual 15" or 18" front-loaded transducers, respectively. Large centrally located vents with radiused terminations eliminate port turbulence and noise. Transducers feature technically advanced 4" voice coils assembled with proprietary high temperature adhesives, vented ceramic magnet assemblies and highly optimized motor design to provide high linear excursion, low power compression, flat frequency response and a very low distortion figure.

Both models feature the PM1400 Power Module, which offers state-of-the-art integration of amplification and signal processing. See the rear page of this specification sheet for further details.

MD Powered Subwoofers offer exceptional performance in a wide variety of applications, including houses of worship, performing arts facilities, hotels, casinos, night clubs, and sporting facilities. For design/build contractors and electroacoustic design consultants, MD Powered Subwoofers offer an effective solution to the myriad of challenges encountered in the design and implementation of permanently installed sound reinforcement systems.

Key Features of the MD Powered Series Subwoofers

  • Useable output to 24 Hz
  • Sixteen 3/8"-16 threaded attachment points address all suspension requirements
  • Available in either black or white finishes (handles on black enclosures only)
  • Foam backed, powder coated, heavy gauge steel grille

Key Features of the PM1400 Power Module

  • Provides 1400 Watts of continuous power
  • Class D switching technology
  • Accepts balanced XLR input connector with pass-through connector
  • Integrated active crossover and equalization electronics
  • Internal limiters prevent over driving the system

MODULAR DESIGN SERIES


DOCUMENTS

MD Powered Subwoofer Specifications (PDF 316K)
MD-SP215/218 User Manual (PDF 4.8MB)

HI-RES IMAGES

MD-SP215 & MD-SP218
PM1400 Power Module

RESOURCES

Enclosure Dimensions
PM1400 Power Module
 
SPECIFICATIONS MD-SP215 MD-SP218
Configuration Two 15" long-throw woofers with 4" voice coils, aluminum demodulating ring Two 18" long-throw woofers with 4" voice coils, aluminum demodulating ring
Frequency Response (-6db)
Frequency Range (-10db)		 27 Hz - 100 Hz
25 Hz - 110 Hz		 26 Hz - 100 Hz
24 Hz - 110 Hz
Maximum Output
   Continuous1
   Peak 2
129 dB
135 dB
131 dB
137 dB
Amplifier Module (PM1400)  
Power Output 3 1400 W
Input Sensitivity 1.2 Vrms (+4 dBu)
Input Clipping 7.5 Vrms (+19.5 dBu)
Input Impedance 20k ohms
Input Connector Balanced XLR female (Pin 1: Earth, Pin 2: +, Pin 3: -)
Output (Loop-thru) Connector XLR male wired in parallel with input
Controls Gain control, 100 Hz high-cut filter, Power on/off
Indicators Clip/Limit (red LED)
Signal (green LED)
AC Power (blue LED)
Protection Thermal limiting, on/off muting, AC in-rush current limiting (< 12 A peak)
Operating Voltage Available in 120V or 130V (+15% / -40%)
AC Power Requirements 4
Pink Noise
Idle:
(6 dB crest factor) 1/8 power:
  1/3 power:
  full power:
Typical Program Material
at Full Power
< 0.5A (< 100 BTU)
2.5A (570 BTU)
5.0A (1380 BTU)
15.0A (4010 BTU)

2.5A (570 BTU)
Agency Certifications FCC class B (conducted and radiated emmissions), UL/CE listed
Enclosure  
Suspension Points 16 load-rated attachment points that accept 3/8" 16 threaded hardware
Finish Wear resitant textured paint, available in black or white (handles on black only)
Grille Powder-coated perforated steel
Dimensions 26" H x 40" W x 23.3" D
(660 mm x 1016 mm x 591 mm)
 28" H x 48" W x 24" D
(711 mm x 1219 mm x 610 mm)
Allow for 4" (100 mm) of free space behind the enclosure to assure proper amplifier cooling.
Weight 190 lbs (86.2 kg) net
213 lbs (96.6 kg) shipping 		210 lbs (95.3 kg) net
233 lbs (105.7 kg) shipping

1 Calculated by adding the loudspeaker’s sensitivity measured in a groundplane environment (1 W at 1 m) to the continuous power of the amplifier provided.
2 Calculated Maximum Peak SPL
3 The maximum sustained power at less than 1% clipping, averaged over the intended frequency range
4 Current values are for 120V, for 230V operation divide by 2

Specifications subject to change without notice.

ModularDesign is a trademark of QSC Audio Products, Inc.

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