Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm

Brand:| Model: RSS390HO-4
Dayton Audio's Reference Series RSS390HO-4 15" subwoofers make solid, tight, low-distortion bass performance a reality for automotive speaker applications and compact, equalized home audio installations.
  • Extensively vented motor eliminates compression and allows quiet excursion
  • Extra-thick black anodized aluminum cone for maximum rigidity
  • Triple shorting ring motor for ultra-low distortion
  • 4-layer coil for high power handling
  • Optimized parameters for small enclosures
  • Highest quality materials throughout for long-lasting performance
Part # 
Weight: 30 lbs.  
List Price$224.99
You Save23%
Your Price
Buy 4-up$165.18
Part # 295-469
Qty:  EA
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Product Details

Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm

The Dayton Audio Reference Series subwoofers take the quality and performance of the much acclaimed RS line into the subwoofer realm. As with the rest of the Reference Series, the main focus of these subwoofers is ultra-low-distortion. Second, third, and intemodulation distortion are kept extremely low by utilizing three short-circuit paths within the motor structure.

A durable aramid fiber spider and extensive venting throughout provide quiet and uniform excursion. The black anodized cone, rubber surround, and custom basket give this driver a unique, high-end look. Choose the high output version for automotive applications or for equalized high-power home subwoofer speaker systems.

A knock-down 3.0 cubic foot subwoofer cabinet built specifically for the Dayton Audio RSS390HO-4 15" Reference Series High Output subwoofer is available here. Save 50% off the price of the cabinet when you buy the cabinet and subwoofer (at regular price) together in this package only.

Product Specifications
  • Nominal Diameter15"
  • Power Handling (RMS)800 Watts
  • Power Handling (max)1600 Watts
  • Impedance4 ohms
  • Frequency Response21 to 600 Hz
  • Sensitivity87 dB 1W/1m
  • Voice Coil Diameter2.5"
  • Magnet Weight150 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)24.2 Hz
  • DC Resistance (Re)3.3 ohms
  • Voice Coil Inductance (Le)1.83 mH
  • Mechanical Q (Qms)4.48
  • Electromagnetic Q (Qes)0.42
  • Total Q (Qts)0.39
  • Compliance Equivalent Volume (Vas)3.87 ft.³
  • Mechanical Compliance of Suspension (Cms)0.11 mm/N
  • BL Product (BL)21.52 Tm
  • Diaphragm Mass Inc. Airload (Mms)380.6g
  • Maximum Linear Excursion (Xmax)12 mm
  • Surface Area of Cone (Sd)829.6 cm²
Materials of Construction
  • Cone MaterialAluminum
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerAluminum
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter15.29"
  • Baffle Cutout Diameter14.01"
  • Depth7.01"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.58 ft.³
  • Sealed F350 Hz
  • Vented Volume2.72 ft.³
  • Vented F330 Hz
Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm
  • BrandDayton Audio
  • ModelRSS390HO-4
  • Part Number295-469
  • UPC844632055034
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (31 Reviews)
  • Weight30 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm
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Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm
Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm is rated 4.871 out of 5 by 31.
Rated 5 out of 5 by from wonderful subwooferI bought this a week ago.. It's in a vented downfiring configuration, 4 cubes with a 4 inch port 16 inches long tuned to 22hz and it sounds soo smooth paired with tritrix speaker towers!!
Date published: 2014-10-04
Rated 1 out of 5 by from JunkSo I thought I had just a defective subwoofer because after only having the first one installed for a week it came apart, it had always made a random weird metal clanking sound since day one until it came apart, we'll I just received my replacement today and it makes the same sound, so I'm guessing it's not gonna last very long either. I will say it does sound very good until it starts to make the random clanking sound, but that's just not what you wanna hear coming from your sub.
Date published: 2014-05-07
Rated 5 out of 5 by from Simply Outstanding!I’ve owned two of the Dayton RSS315HF-4 12-inch subwoofers for 5 years and found myself increasingly dissatisfied with them. Not that there is anything wrong with them per se, but I wanted something that would reach deeper and with more authority. Let’s face it, generally speaking a 12-inch driver simply does not reproduce the lows with the authority of a 15-inch, even though it may “model” well in software.So my goal was to find a 15-inch driver that would be good for porting but not require an enclosure the size of a refrigerator. Using WinISD, I modeled every 15-inch subwoofer Parts Express carries. Lo and behold the RSS390HO-4 came out on top by a long shot. In the same size enclosure I was using for the 12-inch RSS315HF’s I could put a 15-inch RSS390HO-4 and experience much more volume and depth.I built a well braced enclosure using stain-grade laminated pine and 5-minute epoxy – my material and method of choice for a few years now. It makes for a quick build and much lighter enclosure compared to MDF. I used 1.5 x 1.5 x .75 inch solid oak blocks that are epoxied to the back of the baffle for the 1.5 inches wood screws to sink into to mount the subwoofer.The enclosure has a net volume of 3.25 cu. ft. and is 24” high x 16.5” wide x 20.75” deep. I used a 4-inch Precision Port cut to 16.125 total inches in length, and 2-inch fiberglass insulation for cabinet dampening. The result is a frequency response that is flat to 25hz and rolls off to 20Hz.A side note: The subwoofer itself weights 23.5 pounds. The weight they list in the description includes packaging material.I am currently powering it with the Dayton Audio SPA500 500W Subwoofer Plate Amplifier which does a great job. I have it in my audio rack that sits right next to my listening chair (La-Z-Boy recliner). When I am in the mood for extended low end I use the EQ with “Freq” set to 18hz, “Bandwidth” set to 1, and “Level" set to +6dB.The copious amount of bass that comes out of such a relatively small cabinet is simply amazing. I am VERY satisfied with my purchase and HIGHLY recommend this subwoofer!
Date published: 2014-04-07
Rated 5 out of 5 by from Best 15 I could ever wish for!I was looking for a subwoofer for my home theater/music room and I could not find one with the low end extension I wanted #my polk psw 10 couldn't go below 40 hz#... I was on a budget so I was looking at brands like kicker, Rockford, Cerwin Vega etc.. until I crossed paths with this magnificent subwoofer. it was out of my price range but I saved up and eventually bought it with the BASH 300 watt plate amp that was on sale for $110. I was going to get the knock down cabinet but modifying it to be ported seemed like more work than just building my own. building mine was easy as pie, went to lowe's, had them cut me pieces of 3/4" MDF so i can build a 20" cube and then I assembled it. glue, silicone, screws, and poly fill which definitely made it go deeper. when the box was done I used bondo on the edges and painted it glossy black which was a big mistake. it came out like COMPLETE garbage so im saving up for some vinyl laminate so i can fix it, but for now it functions like it should. long story, not so short, I built the box to 3.4 cubic ft. after sub+port displacement and used two 3" aero ports to tune it to 26 hz. and it sounded amazing! it goes as low as 16 hz, and at the same time it can be punchy and hits higher frequencies with ease! im comparing this to my kicker L7 in my car and I just want to ditch the kicker after hearing this subwoofer! my kicker pumps mud, cant go higher than 70 hz, and wont go lower than 24 #w/ the box built to kicker specs and tuned to 32 hz#. for the price of one L7 i could have gotten 2 of these daytons! this is a great subwoofer, high quality and can get loud and low when you want it too. for my first DIY subwoofer at the age of 18 i am very pleased with the outcome and im NEVER buying name brand subs again. $400 and a day or two will get you a sub on par with the big boy subwoofers that cost upwards of +$1,000. trust me, get this and build your own powered sub, you'll never go back to buying Chinese made HT subs again!
Date published: 2013-07-26
Rated 5 out of 5 by from Lovin it!Got home today and had a nice little box waiting for me. Unpacked it, plugged it into a crown xls1000, and let a break in track play for a couple hours in free air. Then I went off to work on my stentorian speaker build.Even in a small (3cu) sealed cabinet, this subwoofer hits the lows like no other. I can't even imagine what it would sound like in a properly tuned ported box...This thing sounds great. Much quicker than my old 15". seems to be a heck of a lot more efficient as well! All that with the ability to play lowwwwww. As of right now I have no complaints and can't wait to play my wife - also a sound lover - a movie when she gets home.
Date published: 2013-01-18
Rated 5 out of 5 by from MUSICAL BASS. and LOTS OF ITI have owned this for nearly 2 years now and finally thought I would say to look no further than this Subwoofer. Very well built and sounds excellent. No gimmicks here: just a great product.
Date published: 2013-01-14

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm

Would a 5.3 cubic foot box with dual 4 inch 15 inch long ports work? Or would it be worth my while to try to extend the ports to 20 inches each. 

Asked by: Mosbro18
Dual 15" long ports will work fine and tune the box to 24 Hz.
Answered by: MattP
Date published: 2015-01-27

Can i use fiberglass insulation rather than polyfil inside of my ported box? Would it sound noticeably worse?

Asked by: Mosbro18
Yes this would be perfectly fine. Standard fiberglass is a great damping material, it is just not often used because people do not like to handle it.
Answered by: MattP
Date published: 2015-01-19

When used with the dayton audio 250 watt subwoofer plate amplifier and dual 4 inch port, how long should the ports be and how big should the box be for the lowest possible tuning frequency while still maintaining high output? No size constraints. 

Asked by: Mosbro18
I would recommend a total volume of 5.3 cubic feet with two 4" ports at 20" long. This will tune the enclosure to 24 Hz and provide a relatively flat response, resulting in very good output.
Answered by: MattP
Date published: 2015-01-19

Would you recommend this for a replacement on a Alto ts15 powered sub/ it has 600w continuous and 1200w max and would it fit ? ThankYou

Asked by: Dj Manuel
This requires a bit more information in order to proceed. Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-10-13

I was interested in know wat size sealed box would have a fc of 45hz and how much polyfil do i need to add to the sealed enclosure 

Asked by: wx3car
The recommended enclosure volume on our site will achieve in room response into the upper 20's in room. We recommend about a half pound of fill per cubic foot of volume for a sealed enclosure.
Answered by: MattP
Date published: 2014-10-06

Hello im interested  in purchasing 4 dayton ho 15s...my trunk is about 24cf i was wondering would 2.75 each sub plus 13sq in of port per cubic feet tuned to 34 would be good for these small enclosure  subs or would sealed get louder in my trunk...thanks

Asked by: Nick Taylor
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-09-03

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