Your Price: $449.00
Part Number:HDC412-D1-A

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SoundQubed introduces our competition grade subwoofers with high power 4 inch voice coils.  The HDC-4 subwoofers feature our largest and most powerful motor ever, coupled to a new frame and suspension system.

The 9.25 inch diameter multi-layer spider system with integrated lead wires provides well controlled excursions needed for advanced box tuning.  The high gap flux powered by the triple stack, 10 inch diameter magnets add extra control while increasing sensitivity.  Our laminated kevlar cones are used due to their excellent strength and durability. 

The voice coils are high temperature flat wire aluminum on black anodized aluminum formers.  10 gauge Direct Connect wiring is used to lower resistance and make multiple wire connections as  easy as possible.

The HDC-4 subwoofers are setting new standards for heavy duty applications where good sound and high power are needed.

Model HDC412
Woofer Size 12"
F(s) 38.36 Hz
0.802 Ohms
6.032 Ohms
Q(ms) 4.001
Q(es) 0.613
V(as) 22.2 liters (0.413^ft)
L(e) 0.173 mH
n(0) 0.194 %
308.7 grams
Sensitivity 1W/1m87.99
BL 9.862
Xmax 40mm
Magnet Weight 403oz
Coil Diameter 4.0"
Coil Length 54.356mm
Usable Throw 69.85mm
RMS Power 2000W
Peak Power 6000W
Mounting Depth 7.875"
Circle Cutout 11.25"
Outer Diameter W/Gasket

PLEASE READ: In the pursuit of offering the best in DIY car Audio we ask that you read about clipping, what causes it and what the outcome is. 
5 Stars
Happy Woofer Owner
I put one of these in my GMC siarra single cab. Took out my center consul and custom fit a 2.5 Cu ft. Box with a 3" x 12.5" slot port tuned to 29 HZ. I believe my truck is going to FALL APART!! I have over 140db for sure but my meeter only goes to 140 so im sure its higher than that. Probably close to 150. I am driving it with a SAZ 4500D and 3 batteries dual alts etc. the woofer takes the power!! The voice coil does not get stinky even after severe pounding bass sessions! I can over drive it here and there but im running more than double the rated rms power. Love it!
Did you find this helpful?  21 of 21 Found Helpful
Reviewed by: (Verified Buyer)  from Albany, NY. on 8/30/2013
5 Stars
I have used thsee subs since they were audioque they are hands down dollar for dollar the best sub you can get. I have 2 HDC4 12'S and they are hitting harder than the two HDC3 15'S I went to competitions with. I'm thinking of getting 2 more or running one 18. The Customer service is great they have been in touch with me since the day I received them
Did you find this helpful?  17 of 17 Found Helpful
Reviewed by:  from Georgia . on 3/11/2016
5 Stars
Trickin on sum 12s
I can do bags, pop cans and hair tricks. I got 2 of these on a Aq3500.1 and let me tell you, WOW. Best by far. Great job on the Hdc4s!!!
Did you find this helpful?  15 of 17 Found Helpful
Reviewed by: (Verified Buyer)  from Lincoln Nebraska. on 5/8/2014
5 Stars
Great power
Working on breaking them in still. They have a lot of power control very loud exactly what I expected. Thanks soundqubed!
Did you find this helpful?  13 of 13 Found Helpful
Reviewed by:  from Virginia Beach. on 5/26/2016
5 Stars
are these subs dual 1 ohms
Did you find this helpful?  6 of 28 Found Helpful
Reviewed by:  from tennessee. on 7/24/2014
5 Stars
dont know
i just ordered it so i'll post a real review when they get here and I listen to them.
Did you find this helpful?  2 of 23 Found Helpful
Reviewed by:  from Fort Smith, Arknasas. on 12/22/2012

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