9900 Series

THE BEAST

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The 9900s are the go to subwoofers for the demanding bassaholic with a profound interest in physics. Entertaining minds will revel in the endless system design possibilities deliverable with these precision low-frequency devices.

Originally coined The Beast, the 9900s first appeared on the market in the early 2000s. It took a brief hiatus, but now it’s back and more beastly than ever. The latest iteration was developed in response to the recent explosion in ultra-low-frequency music. These subwoofers were designed to provide long-term power handling, with accuracy, and high excursion capabilities. It’s been optimized for a 1500 – 2500 watt power band with the ability able to handle bursts of up to 10,000 watts. One look at the 9900 motor and you see why we call it the beast. It boasts 3 inches of magnet cross-section, over a 10″ OD, and weighs in at 70 pounds (motor only). The traditionally tight DD magnet gap drives a 4″ flat wound aluminum voice coil to a peak excursion in excess of 3 inches while keeping enough turns in the gap to maintain power and control.

The 9900 Series features our Evolution Subwoofer Package (ESP). ESP equipped drivers sport larger diameter suspensions and deeper frames than standard subs and exclusive surround and cone designs. ESP subs are truly built to maximize performance in their designated size class.

The 9900 Series comes standard with an oversized dry finish black composite dust cap, red logo, and treated pulp cone, but it can be optioned out with alternative composite dust caps, composite cones, powder coated frames, supercharging, and a multitude of logo options to give your sub a personalized look and/or added performance for a specific application.

Learn more about the ESP features at The DDownlow.

9921b

Driver Size (In): 21
Watts RMS: 1500 - 2500
Peak Power: 10000
VCD (In): 4
Impedance: D1 / D2
Piston Diameter (In): 18 1/4
Fs (Hz): 26.24
Qms: 5.265
Qes: 0.517
Qts: 0.471
Vas: 161.9
Xmech (MM): 92
Xmax (MM): 22
Frame OD (In): 21 5/16
Frame OD w/Gasket (In): 21 5/16
Mounting Diameter (In): 19 1/4
Mounting Depth (In): 11 5/16
Motor Diameter (In): 10 5/16
Motor Depth (In): 4 9/16
Woofer Displacement (CuFt): 0.55
Sealed Enclosure (CuFt): N/A
Ported Enclosure (CuFt): 6.0 - 8.0
Shipping Weight (Lbs): 92
Price (USD): 1600

9918b (ESP)

Driver Size (In): 18
Watts RMS: 1500 - 2500
Peak Power: 10000
VCD (In): 4
Impedance: D1 / D2
Piston Diameter (In): 15 1/2
Fs (Hz): 26.24
Qms: 2.265
Qes: 0.5167
Qts: 0.4705
Vas: 161.9
Xmech (MM): 60
Xmax (MM): 22
Frame OD (In): 18 1/4
Frame OD w/Gasket (In): 18 1/2
Mounting Diameter (In): 16 3/4
Mounting Depth (In): 11 7/8
Motor Diameter (In): 10 5/16
Motor Depth (In): 4 9/16
Woofer Displacement (CuFt): 0.46
Sealed Enclosure (CuFt): N/A
Ported Enclosure (CuFt): 5.0 - 6.0
Shipping Weight (Lbs): 89
Price (USD): 1400

9915b (ESP)

Driver Size (In): 15
Watts RMS: 1500 - 2500
Peak Power: 10000
VCD (In): 4
Impedance: D1 / D2
Piston Diameter (In): 14 1/4
Fs (Hz): 34.32
Qms: 6.551
Qes: 0.426
Qts: 0.400
Vas: 54.38
Xmech (MM): 62
Xmax (MM): 22
Frame OD (In): 16 5/8
Frame OD w/Gasket (In): 16 3/4
Mounting Diameter (In): 15 3/16
Mounting Depth (In): 10 5/16
Motor Diameter (In): 10 5/16
Motor Depth (In): 4 9/16
Woofer Displacement (CuFt): 0.4
Sealed Enclosure (CuFt): N/A
Ported Enclosure (CuFt): 3.0 - 6.0
Shipping Weight (Lbs): 87
Price (USD): 1330

9912b (ESP)

Driver Size (In): 12
Watts RMS: 1500 - 2500
Peak Power: 10000
VCD (In): 4
Impedance: D1 / D2
Piston Diameter (In): 11
Fs (Hz): 31.63
Qms: 5.398
Qes: 0.377
Qts: 0.352
Vas: 23.63
Xmech (MM): 62
Xmax (MM): 22
Frame OD (In): 13 3/8
Frame OD w/Gasket (In): 13 1/2
Mounting Diameter (In): 12 3/16
Mounting Depth (In): 9 11/16
Motor Diameter (In): 10 5/16
Motor Depth (In): 4 9/16
Woofer Displacement (CuFt): 0.33
Sealed Enclosure (CuFt): N/A
Ported Enclosure (CuFt): 1.75 - 2.75
Shipping Weight (Lbs): 81
Price (USD): 1180
9912b (ESP) 9915b (ESP) 9918b (ESP) 9921b
Driver Size (In): 12 15 18 21
Watts RMS: 1500 - 2500 1500 - 2500 1500 - 2500 1500 - 2500
Peak Power: 10000 10000 10000 10000
VCD (In): 4 4 4 4
Impedance: D1 / D2 D1 / D2 D1 / D2 D1 / D2
Piston Diameter (In): 11 14 1/4 15 1/2 18 1/4
Fs (Hz): 31.63 34.32 26.24 26.24
Qms: 5.398 6.551 2.265 5.265
Qes: 0.377 0.426 0.5167 0.517
Qts: 0.352 0.400 0.4705 0.471
Vas: 23.63 54.38 161.9 161.9
Xmech (MM): 62 62 60 92
Xmax (MM): 22 22 22 22
Frame OD (In): 13 3/8 16 5/8 18 1/4 21 5/16
Frame OD w/ Gasket (In): 13 1/2 16 3/4 18 1/2 21 5/16
Mounting Diameter (In): 12 3/16 15 3/16 16 3/4 19 1/4
Mounting Depth (In): 9 11/16 10 5/16 11 7/8 11 5/16
Motor Diameter (In): 10 5/16 10 5/16 10 5/16 10 5/16
Motor Depth (In): 4 9/16 4 9/16 4 9/16 4 9/16
Woofer Displacement (CuFt): 0.33 0.4 0.46 0.55
Sealed Enclosure (CuFt): N/A N/A N/A N/A
Ported Enclosure (CuFt): 1.75 - 2.75 3.0 - 6.0 5.0 - 6.0 6.0 - 8.0
Shipping Weight (Lbs): 81 87 89 92
Price (USD): 1180 1330 1400 1600
Our USA built, Power Tuned subwoofers are designed to push performance limits, yet still maintain a high level of control. Power Tuned subs feature additional mechanical and electrical damping to handle the rigors of crazy lows in daily high output applications. Power Tuned subs are meant to be heard not only in the car, but down the street... way down the street!
Made in USA

CUSTOMIZE YOUR SUB

Express yourself with your choice of logo style and color, plus custom dust cap and cone!

START CUSTOMIZING

DD Audio
4025 NW 36th Street
Oklahoma City, OK 73112
(405) 239-2800 | Fax: (405) 239-7100

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