BassBoss DJ18S Owner's Manual - page 3
Page 3
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2017 True Lee Loudspeakers, LLC – info@bassboss.com – 512-368-3268 855-8-BASS-70 Toll Free
• Frequency Response Down to 24 Hz
• Compact Size, Light Weight, Easy To Transport
• Excellent Output-To-Size Ratio
• Reliable, Protected, Self-Powered System
• 2400W RMS Class D Amp
DJ21 “Loco Mojo” Powered Subwoofer
For DJs and venues seeking extremely deep bass at very
high levels, the DJ21 is the smallest, lightest and most cost-
effective solution available. Suitable for the truly bass-insatiable,
whose focus is on modern music that features frequencies
well below the usual 40-50Hz range, this extremely compact sub
weighs only 138 lbs and delivers output down to 24Hz (-3dB ).
The DJ21 is +2.5dB at 30 Hz while most subs are -10dB at 30 Hz.
That’s an equivalent output ratio of 4:1 at the lowest notes.
The DJ21 is a single 21-inch direct-radiating subwoofer.
Featuring a massive displacement, long excursion, 21-inch
woofer loaded into a vented enclosure that is tuned to optimize
extremely low frequency output using a very large port.
The amplifier is loaded at the interior port end to utilize the air flow
at high output for additional cooling. The cabinet was designed
to minimize materials, cost and weight and maximize efficiency.
2400W RMS amplifier, rated for RMS output using continuous
sine wave signal. This is not a peak or burst power rating. The
amplifier is capable of delivering 2400W of continuous output,
ensuring that the amp isn’t the limiting factor in the output of
low frequencies. Providing abundant power also virtually eliminates
the possibility of overheating and damage to the woofers caused
by clipping.
All that electrical power is converted into acoustical power by
a 21 inch neodymium motor woofer. This premium-quality driver
features a split-wound 4.5 inch 4-layer copper-clad aluminum
voice coil, and peak-to-peak excursion capability of up to 60 mm.
High-intensity Neodymium magnets are lighter and provide higher
efficiency so the result is a lighter and louder cabinet. Split-wound
coils produce a more linear force through the range of movement
of the cone, which results in lower distortion and improved linearity
at high output.
Integrated, comprehensive DSP is included. Processing includes
high-pass and low-pass filters as well as multiple protection
systems and limiters to control all manners of driver overload,
including thermal, excursion and clipping. The protection systems
effectively prevent overheating of the voice coils and minimize
long-term thermal compression while having virtually no effect
on the transient response and peak output of the loudspeaker.
The cabinets are constructed from 18mm Baltic Birch plywood,
assembled using dado joints, screws and advanced composite
adhesives. Stainless steel bolts are used to secure the drivers,
amplifier and pole sockets. The cabinet is finished in an extremely
rugged, black polyurethane coating.
The driver is protected by a black powder-coated, perforated
steel grill. The woofer cones are waterproofed so the cabinets
are safe to use outdoors where they may encounter rain, in
nightclubs where drinks may be spilled on them, or in dusty
environments that may leave the drivers needing a thorough
deep cleaning.