HDC3.115 Copper Coil Subwoofer
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HDC3.115 Copper Coil Subwoofer

Part Number:HDC3.115
review
54
Review(s)
5

Price

Your Price:$299.00

Availability:

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Choose Options

Impedance ( Available in Dual 1 and Dual 2 ohm Coils)
Optional Dustcap
8" Hexagonal Carbon Fiber Dustcap [+$59.00]


The HDC series isn’t just some off the shelf woofer designed in the virtual world.  It is the product of over two years and hundreds of hours of real world research and development. Many of the HDC’s features are only found on woofers costing twice the price. When compared to our competition the HDC series woofers have more cooling, more throw, more motor force, and stronger cones. These woofers work great in everyday street beating or all out gut wrenching SPL builds. We have spared no expense to give you the best subwoofer value on the market today.

HDC Coils

The HDC comes with your choice of  a four layer, round wound, dual 1ohm or dual 2ohm copper coil.

HDC  SUSPENSION

Suspension systems are generally a weak link in a woofer design, and often the primary reason for woofer failure. Over time, especially in high power applications, suspension begins to sag and as a consequence it can no longer control the voice coil’s movement. This generally results in a torn suspension or smashed voice coil.  To avoid this we use a multiple spider configuration engineered to maintain rigidity over extended periods of heavy use. We also hand glue our triple joints to allow for better glue penetration and saturation of the high stress areas. 

HDC DIRECT CONNECT LEAD WIRES

High excursion subwoofers require a lead wire system that doesn’t flop all over the place or break. We use the direct connect system (no terminals) because it works the best. With our direct connect system you get no annoying lead slap noise, no rips or holes burnt in the spiders, and no flimsy lead-in wires.


Note: Parameters taken of random single sampling of NIB subwoofers with no pre-break-in.

Model HDC3.115
Woofer Size 15"
F(s) 49 Hz
R(e)
2.33 (Ohms)
Z(max)
28.25 (Ohms)
Q(ms) 8.761
Q(es) 0.790
Q(ts) 0.725
V(as) 70.421 liters (0.717^ft)
L(e) mH
n(0) 0.37%
M(ms)
grams
C(ms)
mm/N
Sensitivity 1W/1m 91.532db 1W/1m
BL
Xmax (Peak to Peak) 36mm
Magnet Weight 300oz
Coil Diameter 3.0"
Coil Length 54.229mm
Usable Throw 68mm
RMS Power 1500W
Peak Power 4500W
Displacement
.17^ft
Mounting Depth 8.875"
Circle Cutout 13.75"
Outer Diameter W/Gasket
15.625"

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. 

We recommend allowing several weeks of playing time to break in SQ Woofers, full break in may take many months. DO NOT play subwoofers at max amplifier power in the first couple of days, give the suspensions a chance to loosen up. As the suspension breaks in, the subs will play lower and louder.

Product Specifications subject to change without notice.

5 Stars
HDC3 15
Great sub it bangs for your buck. Got it running on a Rockford 1500t amp at 1 ohm bridged and it is the best single woofer if ever owned A+++
Did you find this helpful?    15 of 16 Found Helpful
Reviewed by:  from Superior, Wi. on 3/3/2016
5/5
5 Stars
Beast!!
I order my 2 HDC15's and got them the next day to replace my Obsidians. Have them in a 8.12^ft box at 35hz on a pure 3000.1 and they slam for not being broken in and only on maybe 2k right now. Hit the lows hard and highs also. Best sub's I ever owned.
Did you find this helpful?    14 of 15 Found Helpful
Reviewed by:  from Collin County, Texas. on 3/20/2015
5/5
1 Stars
Good sub unless you get a defect
Ordered 2 hdc315s got one that was rattling so its my responsibility to pay for shipping a sub that they shipped with a defect back to wait for another. Emailed soundqubed to return and they stopped responding. Called they said we'll call you right back when the manager gets back in, that was last week.
Did you find this helpful?    13 of 13 Found Helpful
Reviewed by:  from Mn. on 10/24/2016
1/5
5 Stars
One hell of a sub!
I purchased this beast a year ago, hooked it up to a Hifonics brutus 2200W, and it just laughed at me. Then I hooked it up to a Q3500 in a 4Cu.Ft tuned @28Hz and it straight up destroys the lows all the way down to 20Hz, staying loud and ripping my car apart. I would Recommend this beast to anyone looking for some series bass at a good price.
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Reviewed by:  from Qatif, Saudi Arabia. on 11/29/2015
5/5
5 Stars
amazing subwoofers
I have 2 hdc3 15s in a reinforced attrend bbox..running 4000 watts total.2 hifonics.brutus.brx 20001.d amps one to each sub.and these thing POUND####....oh dee retard strength in these subs..i set alarms off everywhere i go..eathshaking power..love these subs.even ordered 1 more just to have as a backup.not that ill need it.lol.soundqubed you guys blew my mind with these...thanks.
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Reviewed by: (Verified Buyer)  from mamaroneck ny. on 12/26/2015
5/5
5 Stars
nasty sub
Got these to replace DC Audio level 4 15s just swapped subs for the HDC315 no power change on the amps these hit so much harder and cleaner it truly is unbelievable never thought just swapping subs would make such a drastic improvement.By the way the DC level 4 are way way more expensive and side by side comparison are night and day the HDC make the level 4s look inadequate. After adjusting the gains on amps it is just crazy how loud these subs are will be one meter next weekend at spring break nationals SOUNDQUBED FOR LIFE
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Reviewed by:  from Florida. on 3/16/2015
5/5
5 Stars
These Are Monsters!!!!!!!!!!!!!
okay, im not gonna lie, myy uncle talked me into getting these, BEST DECISION EVER!! when i unpacked these....monstrosity of a woofer...they were stiff...the stiffest sub i've ever purchased...now the install was simple enough,but oh my God!! these subs are in a league of their own, ive never heard louder bass for such a good price....and the cone and coil are easy to replace too!!...if your reading this...BUY THESE NOOOOW!!
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Reviewed by:  from Shreveport La.. on 12/16/2015
5/5
5 Stars
Amazing
I purchased this sub only becuase of the positive reviews and let me tell you i was not dissapointed. I only have an hs series hifonics 1500 amp pushing this one 15. Stock battery, stock alt and my big 3 is only 4 guage. This sub broke in perfectly after a week. The lows kept getting lower and lower and thats good for only a 3.5 cu ft box. Im extremely happy with my purchase and customer service is the absolute best. I highly reccomend soundqubed products. Now i just gotta get a better amp and finish my box build as well as install all these new electrical goodies the ups guy brought me.
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Reviewed by:  from Northern california. on 4/10/2016
5/5
5 Stars
Great!!!
Works great with the 2200 or 4500. Running my 2 HDC3s with the 7k. Works great! Hiring 150DB
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Reviewed by:  from Myrtle Beach SC. on 10/8/2016
5/5
5 Stars
HDC 3.115 4 Thumbs up if I had 2 more hands
Got rid of my SA15 and upgraded to this Monster. Retarded improvement in depth and power. Breaking it in slowly but can't help but to turn up once a day at least. Feed it approx 1500 rms from old school mb quart dsc 1500.1 and now I have to sound deaden my roof in the truck because its flexing like the hulk when he's angry! Props to Soundqubed from NY!
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Reviewed by:  from Ozone Park. on 6/16/2016
5/5
5 Stars
sIC1
I dare you to find a better sub at twice the price! High quality clean sound! Way underpriced!!!
Did you find this helpful?    5 of 6 Found Helpful
Reviewed by:  from California. on 3/30/2016
5/5
5 Stars
More than I expected
Bought this sub and put it on a hifonics brx1200 for break in and it already knocked my rear view mirror off! Can't wait to see what it does on rated rms+. Very happy with this purchase.
Did you find this helpful?    5 of 6 Found Helpful
Reviewed by: (Verified Buyer)  from Florida. on 1/9/2016
5/5
5 Stars
Unreal
I had 2 SA 15's on a DD M1c before I purchased this HDC3 15. I hooked up one HDC 15 on a q2200 and oh my god. This one sub is just as loud as the two SA's I had. Now I wish that I would have got the two subs and a Q4500 now.
Did you find this helpful?    4 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from NC. on 9/23/2016
5/5
5 Stars
Killer sub!
This thing is LOUD! I did a free air test just to see what it would do, and it took a full 1,000w RMS, no problem, and had crazy excursion. Compares to subwoofers costing twice as much. Reviews are all a solid 5 stars for a good reason. Definitely recommending SQ to all my buddies!
Did you find this helpful?    4 of 5 Found Helpful
Reviewed by: (Verified Buyer)  from Wisconsin. on 8/7/2014
5/5
5 Stars
BadA**!!!!!!
I have 4 of these in a ported box tuned to 35hz on a Q1-3500D.1 amp and they are stupid loud. I was able to hit 154.4 DB on rap music! The quality is awesome and I highly recommend them to anyone that wants to flex everything in there vehicle. Seriously.
Did you find this helpful?    4 of 5 Found Helpful
Reviewed by:  from Lafayette Louisiana. on 5/15/2014
5/5
1 Stars
Not worth the money
Bought a few of these subs and a lot of recones.. never once was told to run tjem on 500rms for awhile to break in before doing more power.. 1000rms clean power for 60 hours and bam rattles!! Was told to do psi recones but I am pretty over soundqubed. Will say when they do work, for that short time they do sound good.. shame they can't hold up to the rms.. cheap coils and parts i am sure as I hear things about failing subs very often...
Did you find this helpful?    3 of 10 Found Helpful
Reviewed by:  from Enumclaw washington. on 5/15/2017
1/5
5 Stars
BEASTLY
I purchased this HDC3 15 on 6-17-15 and am posting my review on 11-22-16. The shipping was VERY fast and was able to install this sub within a week in a box I built. The box is 3.5 cubic feet with port and sub displacement and is tuned to 35hz. Initially I drove this HDC3 with my AQ 1200.1 on factory electrical. Replaced 2 Kicker 12L5’s and this sub matched their output while not being broke in and underpowered. I thought the sub had finally broke in after about 6 months but I was wrong. After hooking this sub up to a TwistedSounds 2.8 K amplifier(dialed down due to being on factory electrical which I do not recommended doing..) I soon smelled the voice coil for a short period(the smell of new warm electronics.. not burned smell). The sub only got louder as the suspension seemed to loosen up with the new power being supplied. I would NOT THINK TWICE on the purchase of any of the HDC series subs but be warned that a single HDC3.15 will earn you a hefty noise violation citation going 50 MPH on the highway! Initially I was not willing to spend the $$ to gamble on these subs but after having burned up an MBQuart and Hifonics amp, I took the chance on the AQ1200. I have absolutely love this amplifier and the longevity of the AQ1200 convinced me to give the HDC series a try and am absolutely glad I did!. Not only does this sub get absurdly LOUD, it sounds good on country, classical, rock, hiphop, etc. SoundQubed /AQ ‘s customer service has ALWAYS been spot on. They have always been professional and extremely helpful anytime I have contacted them for questions or advice. Bottom line… Customer Service has been outstanding … both subs and amplifiers have proven to be reliable and outstanding quality. Stop hesitating and take the plunge ;-) NOTE: Don’t cage this beast by sealing the box… with a proper ported box and power, this sub sounds awesome on anything I have played.
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Reviewed by:  from Central Texas. on 11/22/2016
5/5
5 Stars
Amazing
I bought this sub about a month ago installed it the day after i got it and my mind was blown. I had two skar audio 12s and this one 15 blows them both out of the water great product will be buying more.
Did you find this helpful?    3 of 4 Found Helpful
Reviewed by:  from McKenzie Tn. on 4/7/2016
5/5
5 Stars
Do it right or don't do it at all
Please right accurate and articulate reviews. I have (1) HDC3 15 Atrend specific box for the 15 (Do not use an improper box!) (Buy the SOUNDQUBED amp) (1200 rms can be heard by the cops lol) (Have a professional install done) (Buy the 6.5 pro components speakers) You can make this setup sound like a movie theatre or a ghetto hood bass system, it's up to you and how you install and tune, let professionals do it for you then get educated on your equipment and dial it in to the perfect setting.The break in period is 30 days at low volume, do not skip this process or your money will have been wasted. Call them as needed for break in process info. took a chance with SOUNDQUBED and they exceeded my expectations. I never write reviews but I was excited to write this one. IYou can get Seattle Seahawk Marshawn Lynch BEAAST MODE with this setup. Do it right or don't do it at all.
Did you find this helpful?    3 of 19 Found Helpful
Reviewed by:  from Tacoma WA. on 12/13/2015
5/5
5 Stars
Unreal
I have my HDC3 15 in a box nowhere near the size it should be in since the box I got didn't fit in my trunk, running off about 1200 watts, which is nowhere near as much power as this sub wants, and it freaking SLAPS. If this thing sounds like this with a setup that is not ideal, I can't wait until I get my box built and my soundqubed 2200. Any future sub/amp purchases will be made through SQ. Too bad there aren't 6 stars.
Did you find this helpful?    3 of 4 Found Helpful
Reviewed by:  from Wisconsin. on 3/24/2015
5/5
5 Stars
very nice
i would and will buy from again bad ass sub....
Did you find this helpful?    2 of 3 Found Helpful
Reviewed by:  from wishram. on 12/25/2016
5/5
5 Stars
Awesome sub
Ran an HDS215 for a couple months and it was awesome. Upgraded to the HDC315 in a simple 3.5 cube net box with 66sq inches of port. Running it on the same power as I used with the HDS215, only about 600-1000 watts. First week: The lows were very loud, the higher bass (above 40) lacking but still loud. Felt like my HDS215 was louder. Second week: It's breaking in. It's louder than my hds215 and way more powerful on the lows. Can't wait to see how much lower it'll get once it's fully broken in. Will be going in a bigger box with more port area and more power. Even on low power, it's performing very well.
Did you find this helpful?    2 of 3 Found Helpful
Reviewed by: (Verified Buyer)  from California. on 10/12/2016
5/5
5 Stars
Soundqubed HDC3 15 dual 2/1 ohm
I have one of these hooked up to a audiopipe 1800! Inside a custom t line ported box. This thing bangs !!! I love it and very loud highly recommended.
Did you find this helpful?    2 of 3 Found Helpful
Reviewed by:  from Eaton Rapids . on 9/30/2016
5/5
5 Stars
Awesome
I went to my first competition in a while today and kicked ass with my hdc315s. These subs just keep getting louder. I took 1st place and beat the next loudest competitor by 3db. He was running my old amp and vfl 15s so just an awesome win for soundqubed. Sq ftw. I just love mine because they love power 5k each. Never had a sub that took this much power and still stayed cool.
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Reviewed by:  from Regina Saskatchewan. on 6/13/2015
5/5
5 Stars
Are you ready?
If your shopping woofers and can't decide what to run? Well if your reading this you've found what your looking for. These subs are not only spl but very musical and give off clean hard punchy bass,oh and did I mention SPL!!!!! I've been running 4 of these hdc3 15's in a 4th order enclosure for almost a year now on 8k clamped and at shows people tap out plain and simple want loud want bandwidth want loud clean sound...stop shopping soundqubed ships so fast you won't be waiting long. So the real question you should be asking is am I ready. these subs are beasts take power and ask for more
Did you find this helpful?    1 of 2 Found Helpful
Reviewed by:  from Denver co. on 12/13/2016
5/5
5 Stars
Beast
Bought the Hdc3 15 about a month agao. This is the best sub on the market. Have it in a 4th order blow through box about 10 cubes total (3sealed 7.5 ported). Hits all notes and gets really loud and low. Will be buying another soon.
Did you find this helpful?    1 of 2 Found Helpful
Reviewed by:  from New Jersey. on 9/1/2016
5/5
5 Stars
BEST SUB!!
Just have one HDC3 15 paired up with a PPI 7000 and man it hits hard!!! Thanks SoundQubed keep up the great work!!
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Reviewed by:  from S Texas. on 8/18/2015
5/5
5 Stars
great subwoofer hdc3 15
I love my soundings hdc3 15 I'm so impressed on how Well this sub performs and how much more power it could handle. My plan is soon to get another one and soundqubed 4500.1
Did you find this helpful?    1 of 2 Found Helpful
Reviewed by:  from jacksonville il . on 5/6/2015
5/5
5 Stars
Best bang for the buck
I've owned the first SQ HDC315D1 in eastern Europe,the first who got it here in Romania and it was ,without a doubt ,the best decision I've ever made ! I payed 440 $ to get it here ,but it was all worth the wait and the money.Fed it 2000 w RMS,he tooked it without warming.The build quality is impressive .It is just brutal on every way.
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Reviewed by:  from Timisoara ,Romania, Europe. on 4/19/2015
5/5
5 Stars
great sub...
i have 1 of these, the d2 . going to get another 1 soon. cant wait. love sq......
Did you find this helpful?    1 of 2 Found Helpful
Reviewed by: (Verified Buyer)  from edgewood,md. on 9/18/2014
5/5

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