Crown CDi4000 2-Channel 1200w Power Amplifier+Mackie SRM Subwoofer+AT Headphones

Package Includes:

(1) Crown CDi4000 2-Channel, 1200w 2,4,8-ohm 70V/140V Commercial Power Amplifier Amp
(1) Mackie SRM1850 1600W 18" Powered Active Pro Subwoofer Sub
(1) Audio Technica ATH-M40x Closed-Back Dynamic Studio Monitor Headphones ATHM40x

Features of CDI4000:

Crown CDi4000 2-Channel, 1200w 2,4,8-ohm 70V/140V Commercial Power Amplifier Amp
Extremely versatile; rated for 2-, 4-, 8-ohm loads and 70V and 140V outputs.
Switch-mode universal power supply.
Intuitive front-panel LCD screen for quick, easy configuration.
Onboard digital signal processing includes crossovers, EQ filters, delay, andoutput limiting.
Up to 20 user defined DSP presets are available.

Specifications:

Channels: 2
Sensitivity (for full rated power at 8 ohms): 1.4V
Rated Power Output (per channel @ 4 ohms): 1200W Stereo
Signal to Noise Ratio (below rated 1 kHz power at 8 ohms): 100 dB (A-weighted)
THD: < 0.5%
Damping Factor (20 Hz to 400 Hz): > 500
Frequency Response (at 1W, 20 Hz - 20 kHz): + 0 dB, -1 dB
Crosstalk (below rated power) 20 Hz to 1 kHz: >70 dB
Input Impedance (nominal): 20k ohms balanced, 10k ohms unbalanced
Dimensions: 3.5" x 19" x 12.25"
Weight: 22.0 lbs
IEC Power Connector: 15A

Owner's Manual

Video of SRM1850:

Features:

Mackie SRM1850 Powered Subwoofer
1600 Watts Peak / 800 Watts RMS
1600W of intense power paired with a custom high-output 18" woofer delivers chest-pounding low end performance
“Built-Like-A-Tank” all-wood, internally-braced cabinet delivers professional-grade road-worthiness and near-zero distortion, even at high volume
Front ported for maximum low-frequency extension and punch
Stereo XLR inputs plus Stereo XLR full-range and high-pass outputs
Integrated digital crossover with variable control and presets for the SRM550 and SRM650 loudspeakers
Smart Protect™ DSP kicks in to protect your investment when things get pushed a little too hard
Built-in cup for easily pole-mounting full-range loudspeakers

Details:

Acoustic Performance
Frequency Response: (–3 dB) 40 Hz – 120 Hz
Frequency Response: (–10 dB) 35 Hz – 150 Hz
Max peak SPL: 132 dB
Crossover Point: 115 Hz plus alignment delay [SRM550]
115 Hz plus alignment delay [SRM650]
60 Hz – 120 Hz [Variable]"
Slope: 3rd order HP, 4th order LP
Transducer
Woofer Diameter: 18.0 in / 457 mm
Voice Coil Diameter: 3.0 in / 76 mm
Subwoofer Diaphragm Material: Paper
Magnet Material: Ferrite

Features of ATH-M40X:

Audio Technica ATH-M40x Closed-Back Dynamic Studio Monitor Headphones
Cutting-edge engineering and robust construction
40 mm drivers with rare earth magnets and copper-clad aluminum wire voice coils
Tuned flat for incredibly accurate sound monitoring across the entire frequency range
Circumaural design contours around the ears for excellent sound isolation in loud environments
90° swiveling earcups for easy, one-ear monitoring
Professional-grade earpad and headband material delivers more durability and comfort
Collapsible for space-saving portability
Detachable cable (includes 1.2 m - 3.0 m coiled cable and 3.0 m straight cable)
For professional studio tracking and mixing, as well as DJ monitoring