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Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm

Brand:| Model: ND105-4
Product Video
Dayton Audio's ND105-4 compact aluminum cone midbass produces high-impact audio demonstrating the latest advances in high-excursion design processes.
  • Extended-range 60 Hz to 10 kHz performance
  • Rubber-edged aluminum alloy cone
  • Large excursion capability—4 mm Xmax, 20 mm peak
  • Self-shielded Neo-Balanced motor structure
  • 1" 4-layer underhung voice coil with polyimide former
  • 30 watts RMS power handling
Part # 
Weight: 0.8 lbs.  
List Price$34.99
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Buy 10-up$23.29
Part # 290-212
Qty:  EA
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Product Details

Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm

Dayton Audio's compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes. An efficient, low-distortion Neo-Balanced motor is combined with a rigid yet lightweight aluminum diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source applications, or combined in multiples and line arrays.

Product Specifications
  • Nominal Diameter4"
  • Power Handling (RMS)30 Watts
  • Power Handling (max)60 Watts
  • Impedance4 ohms
  • Frequency Response60 to 10,000 Hz
  • Sensitivity82.6 dB 1W/1m
  • Voice Coil Diameter1"
Thiele-Small Parameters
  • Resonant Frequency (Fs)53.8 Hz
  • DC Resistance (Re)3.7 ohms
  • Voice Coil Inductance (Le)0.78 mH
  • Mechanical Q (Qms)7.16
  • Electromagnetic Q (Qes)0.59
  • Total Q (Qts)0.55
  • Compliance Equivalent Volume (Vas)0.16 ft.³
  • Mechanical Compliance of Suspension (Cms)1.2 mm/N
  • BL Product (BL)3.9 Tm
  • Diaphragm Mass Inc. Airload (Mms)7.2g
  • Maximum Linear Excursion (Xmax)4 mm
  • Surface Area of Cone (Sd)51.5 cm²
Materials of Construction
  • Cone MaterialAluminum
  • Surround MaterialRubber
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter4.13"
  • Baffle Cutout Diameter3.66"
  • Depth2.64"
  • # Mounting Holes4
Optimum Cabinet Size *
  • Sealed Volume0.1 ft.³
  • Sealed F384 Hz
  • Vented Volume0.3 ft.³
  • Vented F341 Hz
  • * Enclosure volume/F3s based on BassBox "optimum" calculations-
Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm
  • BrandDayton Audio
  • ModelND105-4
  • Part Number290-212
  • UPC844632081071
  • Product CategoryMidrange / Midbass Drivers & Full-Range Speakers
  • Unit of MeasureEA
  • Product Rating
    (23 Reviews)
  • Weight0.8 lbs.
  • Case Qty36
  • 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.

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Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm
Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm is rated 4.6522 out of 5 by 23.
Rated 5 out of 5 by from Impressive for 4"Great midbass and vocal audio from this 4" speaker. Excursion is very impressive. Will probably buy more of them soon or for next build.
Date published: 2014-03-19
Rated 5 out of 5 by from Nice little speakersBought this speaker for a boom box project. Works ok. I am fairly pleased with the sound but I more bought it for the looks. Great high roll surround to compliment the look of the tang band 5 1/4 subwoofer. It is still breaking in and seems to be more alive each time I play it. Not that great in the lowest mids but I have found that as a trait of many smaller aluminum drivers. For the money it is great for my application. Neo magnet makes it super lightweight. It has the rounded square flange on it so it took some fiddling in cad to get my CNC tool paths perfect but it looks nice and sounds acceptable. Still doing finishing on my boom box project but I am taking time out to write a review before I get my hands covered in paint.
Date published: 2014-03-06
Rated 5 out of 5 by from Amazing Little thumperStill working on my overall design, but initial tests of these little guys is amazing. I think I can get down at least to 40hz, maybe a bit lower...I am planning a small subwoofer for my convertible using 4 of these - maybe 6 if I can get the cabinet volume right in the space I have.
Date published: 2014-02-03
Rated 4 out of 5 by from Impressive Little GuyGot these guys as a replacement for the poor quality speakers in my car and I was impressed immediately with them. Not sure exactly how good and low they can go however because they very loosely fit the baffle cutouts in the doors and im sure the door cabinet is not tuned properly. These definitely blast however still about 120hz up with no problem. Best 4" speakers I have found over many other major brand companies.
Date published: 2014-02-02
Rated 5 out of 5 by from Great small speakerGood low freq response for a small speaker. Great sound quality.
Date published: 2014-02-02
Rated 5 out of 5 by from Super 4Real bass not boomy, mids are great too. The woofer looks Little intimidating for its size and appearancee. You can see how beautifully execute his Xmas. I use it in Mike Z. New Horizons and they sound super....
Date published: 2013-05-05

Product Q&A

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Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm

how would i wire say, 20 of these and keep them 4 ohm?

Asked by: jamesbeck
Unfortunately there is no way to wire 20 of these and maintain a 4 ohm load. You will have to use either 16 or 32 in order to do this. You could use 24 and get an overall 6 ohm load.
Answered by: MattP
Date published: 2013-02-11

What would be a good sealed enclosure size for two of these drivers?

Asked by: Mike03
According to the specs listed (Vas 0.16 cu. ft.), around 276 cubic inches (which equals 0.16 cu. ft.): this would be, for example, a square box built with ~6.5" internal dimensions- don't forget to allow for the thickness of the material with which you are constructing it.
Answered by: squarewave
Date published: 2011-12-13

Do I need to have a crossover to run this speaker or could I just run it like a regular full range speaker? What would be a good simple set up?

Asked by: Zircnet
To me, this would depend on your expectations. This is a 40 Hz.- 10khz speaker. It is not going to have thundering lows or open bright mids and highs. It is not a designed full range speaker.Is your use home stereo or auto?I would at minimum consider a mid-tweet with a supplied capacitor crossover or a piezo tweeter to get some upper responce. You can add this in a multi speaker auto system allowing the other speakers to carry the mids and highs.If you are building boxes for these then you can purchase a simple 2-way crossover and search PE for a mid-tweeter with a crossover point of around 2000hz.
Answered by: Nitnub
Date published: 2012-10-06

Enclosure size?

What would be an appropriate enclosure size for this driver to be used by itself as a subwoofer in a 2.1 system?
Asked by: the.forgotten1
For a subwoofer application, I would suggest a ported enclosure of approximately 0.30ft³. You'll want to use a 1.5" port about 7.5" in length, and this will tune your enclosure to approximately 42 Hz.
Answered by: RussR
Date published: 2012-08-20

will this be a good driver to put in a minimus 7 speaker cabinet?

im building a portable system with the sonic T as the amp, are these going to be efficient enough? Are there any other drivers that you would recommend for this enclosure?
Asked by: Jordan
This is basically an AuraSound "NS" series driver with a different name tag.They have plenty of sensitivity. What they do -not- have is plenty of power handling capacity. I do not recommend trying to crank these little babies too loud... they will distort horribly if you try to feed them too much power.Their response curve can also be a tad "peaky" above 1 Khz. or so. I have built several small projects using the AuraSound version of these drivers and in most cases, I ended up having to add a parallel notch filter to the little woofers, in order to smooth out their response a bit.Aside from those issues, they're great little drivers for the money. One last bit of advice: it would be better to use a thin layer of contact cement to affix these drivers to the front baffle, and then add the mounting screws -after- the glue has set. Don't over-tighten the screws, either. The reason is because the stamped steel frame on these little drivers is a bit flimsy and it will easily warp if you simply screw them into place -- hence they will not be sealed properly to the baffles.
Answered by: Rasterburn
Date published: 2012-12-17

pdf data sheet?

Just wondering where the pdf data sheets are. I could have swore there was a link on the page!! Please put them back. That is one thing I just love about PE. You know exactly what you are buying and you can model the xover before ups drops it off!!!tnxtoddt
Asked by: tron
The specifications are now located on the right side of the page in the Product Resources tab.
Answered by: mikevv
Date published: 2011-04-02


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