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Alphard Audio Apocalypse DB-SA521 NEO 21" Subwoofer

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 Product Description


Pricing is PER Subwoofer


ALL Alphard Audio Subwoofers includes 6 Ft Red, 6 Ft Black of GP Pure Copper Audiophile Subwoofer Wire.

Unique design of this 21” monster can serve as a model of the embodiment of the latest SPL technology to achieve extreme sound pressure level and reliability in extreme subwoofer usage modes. A highly efficient subwoofer motor based on the highest-grade neodymium rings, combined into a single array of magnetic circuits made of low carbon steel, together with the huge cone area, allowed to achieve unreachable sensitivity for subwoofers of 91dB. Efficient design with optimal ratio of power and the moving parts parameters of the subwoofer, with use of 5” voice coil wounded with maximum cross section size aluminum wire, provides a huge linear displacement and incredible handling abilities of the subwoofer.

Subwoofer size – 21”.

Voice coil size – 5".

Rated power - 5 000 W.

Maximum power - 10 000 W.



Model DB-SA521NEO
Type Subwoofer
Size 21 inch
Voice coil size 5.00 inch
Cone Paper
Magnet Neodymium
Voice coil wire Alu
Surround Foam
RMS Power 5000 W
MAX Power 10000 W
Frame Alu
Impedance 1+1 Ohm
SPL 91.00 dB
Fs 23.00 Hz
Qts 0.30
BL 22.70
Re 0.7+0.7
Vas 191.70 L
Xmax 30.00 mm
Mounting depth 13.17 inch
Cut-out dimension 19.41 inch

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