MACKIE 18" Powered Subwoofer HD 1801 - Manual (Page 17)

Acoustic Performance
Frequency Response (–10 dB): 35 Hz – 145 Hz
Frequency Response (–3 dB): 44 Hz – 95 Hz
Max peak SPL (calculated) 1 : 133 dB
Max peak SPL (measured) 2 : 129 dB
Transducer
Diameter: 18.0 in / 457 mm
Voice Coil Diameter: 4.0 in / 102 mm
Diaphragm Material: Paper
Magnet Material: Ferrite
Power Amplifier
Rated Power: 800 watts rms
1600 watts peak
THD: < 0.03%
Design: Class D
Cooling: Active, twin thermally
controlled vari-speed
fans
Input/Output
Input Type: Female XLR Balanced
differential
(stereo left/right)
Input Impedance: 20 k
Full Range Output: Male XLR Balanced
(parallel with input)
High Pass Output: Male XLR Balanced
Output Impedance: 300
Level Control: –6 dB to +6 dB
Electronic Crossover
Crossover Type: 24 dB/oct.
Symmetrical
Linkwitz-Riley
Crossover Frequency: 100 Hz
Protection Features
Over-excursion Protection: 40 Hz 24 dB/oct.
Butterworth High
Pass Filter
Thermal Protection: Amplifier mute, auto
reset, twin thermally
controlled vari-speed
fans
Driver Protection: Peak/RMS Limiter
Display LEDs: Power Light ON, Polarity
Invert, Thermal,
Sig/Limit, Front Power
ON
1 Calculated from peak driver sensitivity and amplifier power, half space.
2 Measured with swept sine at 1 W within operating range, scaled for max power, half
space.
AC Power Requirements
US: 100-120 VAC, 50-60 Hz,
300 watts
Europe: 220-240 VAC, 50-60 Hz,
300 watts
AC Connector: 3-pin IEC 250 VAC,
15 A male
Construction Features
Basic Design: Rectangular
Material: 15 mm exterior grade
premium birch plywood
Finish: High durability black
paint
Handles: One on each side
Grille: Powder-coated
galvanized steel
Fly Points: Twelve M10 x 1.5 mm
Physical Properties
Height: 23.0 in / 584 mm
Width: 23.0 in / 584 mm
Depth: 25.8 in / 655 mm
Weight: 106 lb / 48.1 kg
Mounting Methods
Floor mount or fly via 12 integrated M10 mounting points
(using M10 x 1.5 x 37 mm forged shoulder eyebolts). See page
12 for more information.
Disclaimer
Since we are always striving to make our products better by
incorporating new and improved materials, components, and
manufacturing methods, we reserve the right to change these
specifications at any time without notice.
“Mackie” and the “Running Man” figure are registered
trademarks of LOUD Technologies Inc.
All other brand names mentioned are trademarks or registered
trademarks of their respective holders, and are hereby
acknowledged.
HD1801 Specifications
Appendix C: Technical Information
©2010 LOUD Technologies Inc.
All Rights Reserved.
17
Owner’s Manual
Owner’
s Manual