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PreSonus StudioLive 18sAI Active Integration Subwoofer

Product Code PRSTUDIOLIVE18SAI
Manufacturer PreSonus

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Description

With the StudioLive™ 18sAI active PA subwoofer, you can get pretty darned low—down to 35 Hz (-6 dB). Better yet, the 18sAI’s 18-inch ferrite speaker delivers those lows with an accuracy usually found only in studio monitors—except a whole lot louder (up to 135 dB SPL), thanks to a 1,000 watt (bridged), Class D power amplifier. It adds up to punchy, round-sounding lows that make kick drums, basses, and other basement-dwelling sounds come alive. But that’s just the start!

All three full-range loudspeakers are phase- and time-aligned to create a true four-way system when paired with a StudioLive 18sAI subwoofer. For applications that require a more linear (“flat”) frequency response between the subwoofer and full-range speaker, simply engage the highpass filter on the full-range StudioLive AI-series loudspeaker. This will also readjust the phase and time-alignment to keep the full-range system in phase with the 18sAI subwoofer, enabling you to create the best four-way system for your application. Need a little more bump? Leave the highpass filter off and enjoy the perfectly phase- and time-aligned overlap at 100 Hz between your full-range system and your subwoofer. This is especially useful for applications that require more kick from their kick drum.

Main Components
18-inch ferrite transducer
1,000 watt (bridged), Class D amplifier
Active Integration 32-bit, 96 kHz DSP with variable crossover, dynamic limiting, and excursion limiting
Stereo line inputs (XLR-¼" combo) and switchable stereo/summed-mono line outputs (XLR)
Universal Switch mode power supply with power-factor correction
Controls and Networking
Ships with Ethernet connection for wired control; optional Dante card
Alignment delay (switchable: 0, 2, or 4 feet) enables subwoofer to be placed in different positions relative to a full-range speaker system
Wireless or wired networking with free SL Room Control software for Mac®, Windows®, and iPad® enables complete setup, tuning, and monitoring
Network Setup Wizard automatically detects each speaker and allows you to quickly connect to your wireless router network
Remote control over Maximum SPL/output level, high-pass filter, onboard operational modes, performance monitoring, mute, and speaker delay
31-band graphic EQ and 8-band parametric EQ (total of 10, including feedback notch filter)
Visually display room layout on a laptop or iPad
Edit, save, recall, and share speaker-setup parameters
Convenience Features
Comfortable, ergonomic handles
Integrated pole insert and interlocking stacking provisions
Optional mountable Sub Dolly and pull-tested Sub Pole to mount a full-range system atop the 18sAI

 

Specifications

Computer system requirements:
Below are the minimum computer-system requirements for SL Room Control:
Mac
Mac® OS X 10.8 or 10.9 (32- or 64-bit)
Intel® CoreTM 2 Duo, 2 GHz
4 GB RAM (more recommended)
Windows
Windows® 7 SP1 or Windows 8 (32- or 64-bit)
Intel® CoreTM 2 Duo, 2 GHz
4 GB RAM (more recommended)
​Mac and Windows Systems
Ethernet port or wireless connection required
Wireless router required
Monitor with at least 1280x768 resolution

Apple iPad
iPad 2
​iOS 7.0.1 or higher

Full-range
Subwoofer
Acoustic Performance
Configuration 312AI: 3-way triamped
315AI: 3-way triamped
328AI: 3-way quad-amped
328i-W/B: 3-way quad-amped Powered subwoofer, ported
Frequency Response (-10 dB) 312AI: 50 Hz to 23 kHz
315AI: 46 Hz to 23 kHz
328AI: 54 Hz to 23 kHz
328i-W/B: 54 Hz to 23 kHz 29 Hz to 141 Hz
Frequency Response (-6 dB) 312AI: 56 Hz to 22 kHz
315AI: 52 Hz to 22 kHz
328AI: 59 Hz to 22 kHz
328i-W/B: 59 Hz to 22 kHz 32 Hz to 110 Hz
Nominal Coverage (-6 dB) 90° x 60° -
Maximum Peak SPL 312AI: 131 dB
315AI: 131 dB
328AI: 133 dB
328i-W/B: 133 dB 135 dB
Crossover Frequency LF: 100 Hz to 1 kHz (overlapped)
HF (312AI and 315AI): 1.8 kHz
HF (328AI and 328i-W/B): 1.7 kHz -
Directivity Index (DI) 312AI: 10 dB, >460 Hz
315AI: 10 dB, >500 Hz
328AI: 10 dB, >420 Hz
328i-W/B: 10 dB, >420 Hz -
Directivity Factor (Q) 312AI: 10.0, >460 Hz
315AI: 10.0, >500 Hz
328AI: 10.0, >420 Hz
328i-W/B: 10.0, >420 Hz -
Transducer
LF Transducer 312AI: 1x12" Ferrite;
315AI: 1x15" Ferrite;
328AI: 2x8" Ferrite
328i-W/H: 2x8" Ferrite
18" Ferrite
MF Transducer 8" CoActualTM -
HF Transducer 1.75" compression driver -
Voice Coil Diameter - 4"
Amplifier
Type Class D Class D
Total Power Output 2,000W (total power without protection algorithms and limiter enabled)
1,000W (total power without protection algorithms and limiter enabled)
LF Power 312AI: 2 x 500W bridged (1000W total)
315AI: 2 x 500W bridged (1000W total)
328AI: 2 x 500W
328i-W/B: 2 x 500W 2 x 500W bridged (1000W total)
MF Power 500W -
HF Power 500W -
Rated THD <0.05% (20 Hz - 20 kHz)
<0.05% (20 Hz - 20 kHz)
Dynamic Range 119 dB (A-weighted) 119 dB (A-weighted)
Bandwidth 20 Hz - 20 kHz 20 Hz - 20 kHz
Cooling Free air convection
Free air convection
Connections and Controls
Input Channels 1 mic, 1 line 2 line
Input Connector Types 1 XLR (F), 1 combo 2 combo
Phantom Power 15 VDC (Mic Input only) -
Mic Input Impedance 1 kΩ -
Line Input Impedance 10 kΩ
10 kΩ
Maximum Input +22 dBu +22 dBu
Output Connector 1 XLR (M) - Mix out 2 XLR (M) - throughput
Controls Mic Level (Variable: Off to +48 dB),
Line Attenuation (Variable: -24 dB to 0 dB),
Speaker Attenuation (Variable: -24 dB to 0 dB) Speaker level (Variable: -12 dB to +12 dB), mono sum
Indicators
DSP Preset, HPF On/Off, Network Connected, Network Activity, Wi-Fi Setup, Wi-Fi On, Signal, Limit, Clip, Thermal
DSP Preset, Delay Preset, Polarity Invert, Network Connected, Network Activity, Wi-Fi Setup, Wi-Fi On, Signal, Limit, Clip, Thermal
DSP
Contour Presets Normal, LBR Source, Floor Monitor Normal, Extended LF
Polarity - Normal or Reverse
Delay Presets - 0m, 1m, 2m
HPF 100 Hz, 4th-order Linkwitz-Riley
Bit Depth 24-bit 24-bit
Sample Rate 96 kHz 96 kHz
Enclosure
Material 15 mm Baltic birch 15 mm Baltic birch
Finish ChemlineTM polyurethane ChemlineTM polyurethane
Grille Powder-coated steel Powder-coated steel
Dimensions (HxDxW) 312AI: 24.8" x 19.5" x 16.4"
(629.92 mm x 495.3 mm x 416.56 mm);
315AI: 27.9" x 18.6" x 21.3"
(708.66 x 472.44 x 541 mm);
328AI: 30.1" x 15.7" x 13.3"
(764.54 x 398.78 x 337.82 mm) 23" x 24" x26"
(584.2 x 609.6 x 669.4 mm)
Unit Weight 312AI: 62 lbs (28.12 kg)
315AI: 71 lbs (32.2 kg)
328AI: 51 lbs (23.13 kg) 94 lbs (42.64 kg)
Handles One on each side (Not available on 328i-W/B)
One on each side
Monitor Angle 50° -
Safety
Amplifier Protection Over-current, DC, over/under-voltage, over-temperature, high frequency Over-current, DC, over/under-voltage, over-temperature, high frequency
Transducer Protection 4-ch. multi-threat limiter 4-ch. multi-threat limiter
Power
AC Power Input 100-230V~, 50-60 Hz 100-230V~, 50-60 Hz
AC Power Consumption (1/8 Power) 250W 150W
Suspension Mounting
Rigging Points 12 M10 (16 on 328i-W/B) -
Mounting 35 mm, 2-position (315AI: single-position; 328i-W/328i-B: no pole mount)

 

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