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
    (30 Reviews)
  • Weight30 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains 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 4.8667 out of 5 by 30.
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
Rated 5 out of 5 by from first diy sub, more than satisfied!I recently finished my sub, pairing this with the yung 300 no boost amp. Put them in a 5.5ft³ net volume box, down firing with 2 4" ports tuned to 22hz. This is primarily for movies. To keep it short this has turned out to be an excellent sub! I am replacing an old Sony htib sub, so I am coming a long way from that box. But its hard for me to imagine anything in the market less than 350 bucks (which is what I have in this build) to sound anywhere near as good. Look forward to building another when the time comes :)
Date published: 2012-11-13

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

I am building a 3.5 cu. ft. sealed box and need to know how much polyfill I need, if any? Thanks in advance.

Asked by:
We recommend about a half pound per cubic foot of airspace as a good starting point.
Answered by: MattP
Date published: 2014-07-28

I have a 2.7 ft3 with a 4 inch precision flared port, using the whole length. Is that what this really needs. What will the tuning be. And how many watts will make it use all the xmax? This is in a car.  

Asked by: derek82
In that volume with the full port length it will be tuned to about 27 Hz. You could shorten the port to 10" for a tuning frequency of 33 Hz. Xmax is not reached with 800 watts until 15 Hz.
Answered by: MattP
Date published: 2014-07-03

What screws would you recommend to mount this driver to a double thick 3/4" MDF baffle?

Asked by: JoelfromEdgewater
You would use a 1/4 inch or M6 screw and T nuts for that but unfortunately we do not have one long enough. Our mounting kits are 1-1/2 inches long which would come up a little short.
Answered by: Chrisf
Date published: 2013-11-15

F3 of 3Hz

Hi all,I don't claim to be a sub desiger expert, but can this driver really do an F3 of 3Hz in a 1 cubic foot sealed box?That seems incredible! If its true, then I'm certainly going to get 1 or 2.
Asked by: grahamn
I'm sure with enough EQ applied at a very limited volume level you can get an F3 that low but there is no reason. In 1 cubic foot, this woofer has an F3 of roughly 50 Hz which is ideal for most car audio applications.
Answered by: MattP
Date published: 2013-10-14

What is the recommended enclosure sizes with displacement?

Hello, It's been mentioned that these would work great in a 3 cf enclosure per sub, and Russell also mentioned you could port the 3 cf enclosure using two 3"x16" ports; is this optimum... starting with the 3 cf net enclosure then putting in the .21 cf of woofer and .13 cf of ports to have a net enclosure of 2.66? Does that still have the tuning at around 28hz, or if you were building, would you add in the displacement of the driver and ports? It's always been my experience that if you can, you want to be as specific as possible when setting your vent vs. enclosure space calculations...Thanks!!
Asked by: Jeff B.
A 3 cubic foot net enclosure with two 3"x16" ports will yield a tuning frequency of 28 Hz. The driver and port displacements really will only change a tuning number by no more than a few Hz which is hardly audible. The volume never needs to be 100% accurate.
Answered by: MattP
Date published: 2013-01-19

Will this sub do good in a 1.5 cf sealed box with 600 watts?Looking to replace my type r that hates being sealed

Asked by: ShaneC
You should run the T/S parameters through a box calculator. If you just try to put another driver into an existing box - you will compromise performance. This sub is designed for small boxes - but the PE speaker builder software does not list the correct box volumes - so you will need to use a calculator on your own. A total Qts of 1.0 will give a bump in the bass. .707 is flat, and .5 is critical for audiophiles. As for the power - just make sure you have "Clean" power. Clipping is what melts voice coils. And if you are in a small box with a plate amp - get the most power you can as it will have built in EQ to help flatten repsonse due to the small box. For mobile - the power ratings are all misleading - go for a reputable brand mono amp designed for bass that is stable to 2 ohms and change your car battery !!!
Answered by: MarkAJH
Date published: 2014-07-03

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