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• Described as “industry‑standard,” delivering “clean, powerful bass and stunning clarity” even without a subwoofer .
   
• Known for reliability on the road: “took them gig to gig… never let me down” .
   
• Road‑ready build: rugged ABS, M10 rigging, dual mount versatility 

The QSC KW181 (often nicknamed K‑181) is a powerhouse 18″ active subwoofer that stands out for its:

• Rugged build quality and transportability
   
• 1000 W continuous power with DSP-driven clarity and protection
   
• Deep, clean bass output up to 135 dB SPL peak
   
• User-friendly layout and professional-level features

ADJ American Audio APX12 GO BT

• Speaker: 12″ woofer with 1.5″ voice coil, 1″ high-frequency driver
   
• Power: 200 W peak (65 W RMS) via Class-D amplification  amazon.com+10reverb.com+10idjnow.com+10aboveavl.com+3adj.com+3idjnow.com+3
   
• Frequency Range: 40 Hz–18 kHz; Sensitivity ~93 dB  reverb.com+3aboveavl.com+3idjnow.com+3
   
• Battery: Up to 8 hours runtime; powered by 12 V/700 mA rechargeable battery, with charge in ~4 hours  

Unbelievable BASS 

• Handling: 1 600 W continuous, 3,200 W program, 6,400 W peak
   
• Frequency Response: 47 Hz–1.5 kHz ±3 dB (anechoic); down to ~30 Hz at –10 dB
   
• Sensitivity / SPL: 100 dB SPL (anechoic), 106 dB half-space; maximum SPL ~138 dB continuous / 144 dB peak

• Column & Drivers: 8×2″ C‑shaped tweeter array + 10″ woofer, delivering 37 Hz to 20 kHz
   
• Amplifier: 400 W RMS / 1 500 W peak; max SPL 123 dB (AC) or 119 dB (battery)
   
• Battery: 97.2 Wh removable lithium-ion pack, 4–6 h runtime
   
• Mixer: 5 channels (3× XLR/TRS with phantom, 1× Hi‑Z, 1× 3.5 mm/Bluetooth), onboard EQ & volume controls
   

• Processing: dbx DriveRack tech (Automatic Feedback Suppression), Lexicon Reverb, Delay, Chorus
   
• Wireless: Bluetooth 5.0 streaming + JBL Pro Connect app to control up to 10 units
   
• I/O: 3 combo XLR, 1 TRS Hi‑Z, 1 TRS/Bluetooth, 1 TRS thru, 2 USB charge ports
   

• Weight: (42.5 lb); compact polypropylene + steel grille chassis
  

• Solo musicians, presenters, educators, and small bands seeking a robust, portable PA.
   
• Quick setups—e.g., school events, small gigs, corporate presentations.
   
• Users needing remote control, thanks to the STAGEPAS Controller app and Bluetooth.
• 1100 W Class‑D amplifier: Delivers up to 125 dB SPL peak @1 m, with 600 W for low-frequency bass and 500 W for highs
   
• Drivers: 12″ subwoofer plus a 10‑element 1.5″ line-array for wide frequency response (37 Hz to 20 kHz)
   
• Coverage: 170° horizontal × 30° vertical—consistent and even sound across rooms
   

• 5‑channel mixer: Three mono mic/line inputs + one stereo line.
   
• Bluetooth 5.0 streaming and remote control via STAGEPAS Controller app (iOS/Android)
   
• Plug‑and‑play assembly: No extra cables—just add spacers and mount the column
   
• Design: Lightweight ABS/polyurea‑coated subwoofer 41lbs and slim, modular column for easy transport
   

• Amplification: Bi‑amplified — 800 W to the 15″
• Frequency Range: 39 Hz to 18 kHz (−10 dB); ±3 dB response is 42 Hz–17 kHz 
• Max SPL: 129 dB @1 m 
• Inputs: 3-channel mixer (1× XLR mic/line, 2× balanced ¼″ TRS line).
• Controls: Bass and treble shelving EQ ±15 dB.
• Dispersion: 90° horizontal × 60°  
• Cabinet: (46 lb)

• Configuration: 3‑way active speaker with a 15″ low-frequency woofer, 6.5″ midrange driver, and 1.75″ diaphragm compression tweeter 
• Power: 1,000 W Class‑D total (2 × 500 W continuous for LF and MF/HF), with 2,000 W peak output 
• Frequency Range: –6 dB at 35 Hz–18 kHz; –10 dB 33 Hz–20 kHz 
• Max SPL: 134 dB peak 
• DSP Features: Includes DEEP™ low‑frequency enhancement, Intrinsic Correction™ 
• Mixer inputs: Two combo XLR/TRS mic/line inputs with mic/line gain switch (0, +12, +24, +36 dB); stereo RCA and summed XLR outputs  
• Mounting options: 35 mm pole socket, M10 rigging points for suspending, trapezoidal shape usable as wedge 
• Weight ~87 lb 

• Drivers: 15″ woofer paired with a 1.75″ diaphragm compression tweeter 
   
• Bi‑amped Class‑D Power: 1,000 W total (500 W LF + 500 W HF continuous), 2,000 W
   
• Frequency Response: 44 Hz–20 kHz (‑10 dB), 47 Hz–18 kHz

• Drivers: 15″ woofer paired with a 1.75″ diaphragm compression tweeter 
   
• Bi‑amped Class‑D Power: 1,000 W total (500 W LF + 500 W HF continuous), 2,000 W
   
• Frequency Response: 44 Hz–20 kHz (‑10 dB), 47 Hz–18 kHz
   

Overview:

• Next-gen intelligent active loudspeakers designed for quick, solo setup (plug‑and‑play) and high-tech networked systems
   
• Includes LA108 (8″) and LA112 (12″) modules plus LS118 subwoofer.
   

Key Features:

• RapidDeploy™ rigging: one-person setup, easy angle adjustment
   
• AWARE™ auto wireless array recognition: automatic optimization with a single button
   
• LEAF™ acoustic waveguide: smooth long-throw coverage and clear midrange 

Line Array + Stage + Screens + Barricades
 

• Each element includes high-, mid-, and low-frequency drivers.
   
• Designed to work together to form a coherent wavefront.
   
• Subwoofers
   
• Often ground-stacked or flown to handle low frequencies.
   
• Amplifiers/DSP (Digital Signal Processing)
   
• Power the system and control EQ, delay, limiting, and crossover points.
   
• Rigging System
   
• Allows the array to be safely flown and angled for optimal coverage.
   
• Mixing Console
   
• Where the sound engineer controls levels, effects, and routing.