Death From Below

Audio

• Woofer: 2 x 8" Low Frequency Drivers, each with a dedicated amplifier
• Amplifier Type:  Multi-rail Class D x 2
• Amplifier Power: 144W RMS (2 x 72W Infineon Merus Ultra-Efficient Multi-Level D-amps)
• Amp Heat Sink:  direct connect 215 x 130 x 3 mm external aluminum plate
• Acoustical Max Level: 122dB
• Volume:  30-step local control plus global control
• Punch Enhancement: 3 x Film Capacitors + 5 x Low ESR Electrolytic Capacitors
• 6 EQ Presets (1 tuned specifically for popular Soundboks full-range speakers)
• Dual Bass Reflex Ports
• DSP:  Analog Devices DSP provides filtering, EQ and pop-free live switching of user EQ presets
• THD+N <0.01% 50Hz - 150Hz
• Frequency Response: 35Hz - 180Hz +/- 3 dB

Connectivity

• Inputs: SKAA / SKAA Pro (auto switching; automatically follows the transmitter class)
• Works with all SKAA/SKAA Pro sources including Dani Pro transmitters and all SKAA Hub speakers (for example, Soundboks 3, 4, & Go)
• Wireless Range: Up to 50-meter reliable range (actual range will depend also on the antenna implementation in the transmit-side device)

Interface

• Power/Gear button
• Power LED
• Bond Button
• Bond Indicator
• 30-step Volume rotary encoder
• Battery Fuel Gauge (5 LED stack)
• EQ preset select (Wide, Outdoor,
• SB++, Punch, Tight, Bottom)
• Audio Routing select (L, R or Mono Mix)
• Time Alignment select (Phase Flip,
• 2ms, 4ms, 7ms, 11ms delays)
• Works with (optional) SKAA cmd (free app) when used with Diz, Ursula, and Cassandra Transmitters

Power

• Internal Battery: 115 Wh, 12-cell 18650 Li-ION
• Battery Life: Up to 40 Hours at regular listening volume
• Charge Time: Charge from empty to full in 2.5 Hours
• Brick Power Supply: 26V 125W (included)
• Charge battery and play DFB at full volume at the same time

Cabinet

• Build: 12mm (1/2") birch plywood construction with black speckle coat finish
• Pole Bushing: 1 3/8" (35mm) x 4" deep welded steel (pole not included)
• Weight: 15.5 kg (34 pounds)
• Dual monkey grip handles
• Self-levelling honeycomb-cell soft rubber feet x4
• Rear wall rubber feet x4
• Dimensions (without feet):
  
  • 25 × 61.7 × 47.5 cm  (H × W × D)
  • 9.8 × 24.3 × 18.7 inches (H × W × D)
• Dimensions (with feet):
  
  • 27.4 × 61.7 ×  49.5 cm  (H × W × D)
  • 10.8 × 24.3 × 19.5 inches (H × W × D)

• We didn’t just take an AC-powered sub and strap a battery on it — DFB is built and optimized from the ground up to be a battery speaker.   In the world of battery speakers, bags of Watts is actually a bad thing.  Imagine how long a 115 Wh battery would power a 3600 W speaker … 115/3600 = 0.03 hours.  Even once you consider the crest factor, you still end up at 0.38 hours (23 minutes).  Would you buy that speaker?   Yeah no — the same rules don’t apply.  The challenge is how to take an amp rating like 144W and translate it into paint peeling SPL output — killer real world volume that rivals the 3600 W monster.   It sounds like magic but it’s a carefully choreographed dance of cutting edge electrical, acoustical and battery engineering which makes DFB awesome.  Make no mistake, DFB’s first impression on people is, almost invariably, “That thing is f*cking loud!”.  Maybe it IS like magic.
• A built-in bank of 3 ultra-fast film capacitors and 5 beefy electrolytic caps jacks up DFB’s performance by giving its amps instant access to energy when needed; that is, by ensuring the amps are never starved for power — the resulting enhanced impulse response is what’s behind DFB’s extra-ballsy bass punch.  Double the punch with no battery life hit — nice.
• Choose from 6 epic EQ presets including one specifically tuned for use with popular Soundboks speakers
• Set DFB’s Audio Routing to LEFT, RIGHT or MONO MIX — yes, this means you can set up 2 DFBs as stereo subs if that’s what you want
• Dual tuned ports extend DFB’s bass down to 35 Hz and maximize SPL output
• Steel grills suck.  They’re real heavy and BLOCK 30-40% of their surface area with metal material.  They’re a ball & chain on driver cone dynamics and what’s worse, they waste battery energy.  Rather than subscribing to this industry-accepted insanity, DFB’s light-weight aluminum vanes enable 99% unencumbered airflow to and from the drivers and ports.  DFB actually ships with 4 vanes for extra protection.
• Charge the internal battery and play DFB at full volume at the same time
• Internal battery charges from empty to full in 2.5 hours using the included 125W brick power supply
• DFB's battery fuel gauge LED stack displays battery life remaining — the bottom LED starts to slow flash when you’ve got 45 minutes left
• A system with two DFBs and two Soundboks 4s pole mounted atop the DFBs is an ideal setup for the gigging mobile DJ
• The above setup can be fed directly from the DJ deck by using a Dani SKAA transmitter, or alternatively, the DJ Deck can be XLR wired to one of the Soundboks 4s which in turn, can feed the remaining 3 speakers wirelessly via SKAA.
• Ultra-simple 1-knob operation; yeah there’s an Owner’s Manual, but you won’t need to read it.  Just set your Soundboks to Host mode and start peeling the paint.
• Mega flexible — when you do finally crack open the Owner’s Manual, you’ll find over 60 “sweet hookups”; more than 60 cool ways to use your DFB laid out in easy-to-understand hookup diagrams
• 5 of 6 of DFB’s birch plywood walls are featureless — so 5/6 walls are pretty much impervious to impact damage
• Gorgeous and robust speckle-paint matte black finish — yes, the classy one — it’s beautiful, tough and LIGHTWEIGHT
• DFB’s massive, thick honey-comb rubber feet compress to prevent DFB from wobbling regardless of how uneven a surface DFB is placed on
• Big rubber feet on its back wall protect the cabinet during transport and storage
• Pop an industry-standard 1 3/8” (35mm) pole (not included) into DFB's bushing and loft a Soundboks 3, 4, Go or virtually any other powered speaker up top — no tripod stand needed
• With its massive welded-steel 4” deep pole bushing, ultra wide stance and anti-wobble rubber feet, DFB is a mega-stable pole base for your Soundboks or other pro-grade full-range top speaker
• Two monkey grip handles enable serious manhandling while literally reducing DFB’s weight at the same time
• Weather resistant — DFB is good to go, regardless of where and when your gig is happening
• Gorgeous 3mm powder-coated aluminum User Interface panel — it’s hefty to make DFB tough, and it doubles as a massive heat sink for DFB’s audio amplifiers.  With a heat sink this big, DFB can actually deliver the full rated amplifier wattage to your cottage.
• Feed DFB from Dani transmitters, Soundboks 3, 4 & Go speakers, other SKAA Nadja Hub speakers, as well as any of the many types of SKAA /SKAA Pro transmitters found on SKAAstore.com
• DFB is not just for Soundboks. Use DFB to complement virtually any full-range PA speaker.  Also, any powered speaker (QSC, JBL, EV, Mackie, etc.) can be converted to SKAA wireless just by adding a pro receiver such as Streetheart by Dillinger Labs
  
  

  Download the Death From Below Owner's Manual PDF