Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer

Brand:| Model: W5-1138SM
Amazing bass in a compact package! This one-of-a-kind 5-1/4" subwoofer has an impressive 9.25 mm of Xmax. A wide roll surround, raised flat spider, and large 1-1/4" 4-layer voice coil ensure impressive bass performance and high power handling.
  • Amazing bass in a compact package
  • Wide roll surround, raised flat spider
  • Vented pole and vented spider allow good airflow around the coil to improve heat dissipation and reduce compression
Part # 
Weight: 1.8801 lbs.  
List Price$76.77
Regular Price$59.05
You Save15%
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Part # 264-831
Qty:  EA
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Product Details

Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer

Amazing bass in a compact package! This one-of-a-kind 5-1/4" subwoofer has an impressive 9.25 mm of Xmax. A wide roll surround, raised flat spider, and large 1-1/4" 4-layer voice coil ensure impressive bass performance and high power handling. The vented pole and vented spider allow good airflow around the coil to improve heat dissipation and reduce compression. The ultimate miniature subwoofer driver!

Product Specifications
  • Nominal Diameter5-1/4"
  • Power Handling (RMS)40 Watts
  • Power Handling (max)80 Watts
  • Impedance4 ohms
  • Frequency Response45 to 1,500 Hz
  • Sensitivity82 dB 1W/1m
  • Voice Coil Diameter1.26"
Thiele-Small Parameters
  • Resonant Frequency (Fs)45 Hz
  • DC Resistance (Re)3.4 ohms
  • Voice Coil Inductance (Le)25 mH
  • Mechanical Q (Qms)2.83
  • Electromagnetic Q (Qes)0.58
  • Total Q (Qts)0.48
  • Compliance Equivalent Volume (Vas)0.21 ft.³
  • Mechanical Compliance of Suspension (Cms)0.49 mm/N
  • BL Product (BL)6.51 Tm
  • Diaphragm Mass Inc. Airload (Mms)24.95g
  • Maximum Linear Excursion (Xmax)9.25 mm
  • Surface Area of Cone (Sd)94 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialRubber
  • Basket / Frame MaterialSteel
  • Magnet MaterialNeodymium
Mounting Information
  • Overall Outside Diameter6.13"
  • Baffle Cutout Diameter4.74"
  • Depth3.78"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.11 ft.³
  • Sealed F379 Hz
  • Vented Volume0.36 ft.³
  • Vented F339 Hz
Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer
  • BrandTang Band
  • ModelW5-1138SM
  • Part Number264-831
  • UPC844632009785
  • Product CategorySubwoofer Drivers
  • Unit of MeasureEA
  • Product Rating
    (66 Reviews)
  • Weight1.8801 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.

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Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer
Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer is rated 4.303 out of 5 by 66.
Rated 5 out of 5 by from Clean SoundI used these in a car (Porsche 996) installation and they turned out great. The Porsche had ported speaker boxes built into the doors with an old, paper cone speaker. These fit as a replacement with minimal mods and they are nice and crisp for the low end. They are not vibrate-your-license plate low but thats not what I was looking for. Very happy with the purchase.
Date published: 2014-05-07
Rated 5 out of 5 by from awesome little beastI had been going through some of the builds in the project gallery when I happened across a couple portable boom box ides. As a full time audio tech and repair technician I spend most of my time designing cool stuff to build in my head. I often find myself in the wood shop with my cnc cutter building my latest sub-woofer idea or pa speaker design. Not being able to get the idea out of my head I set out to design my portable, slightly over the top boombox. I have built many sub-woofer cabinets of many different styles from giant horn sub-woofers for pa application to smaller font loaded home stereo subs. I have built many over the top car audio subs for sheer sound pressure...so my expectations of this little speaker were not high.I spent some time looking at component choices to build my portable boom box and this speaker met the basic requirements and size to fix my design. My design goal was for a battery powered portable with ample bass output for some back yard and in the shop use. Needless to say this little sub has put a big grin on my face. I am totally in my happy place. I am quite pleasantly surprised at this little marvel.I settled on a .5 cu ft box tuned to 44Hz. I am hearing some frequencies well below tuning and this little speaker sounds much bigger than it is. I turned it on and my jaw just about dropped to the floor. The bass is tight and articulate and hits well below 40 Hz. So happy with this thing I couldn't wait to post a review.Still have all the finishing to do. I still waiting for some parts... sounds good enough for testing with.
Date published: 2014-03-04
Rated 5 out of 5 by from Tang Band 5-1/4 Subwoofer in a Bandpass BoxThis little speaker is an unexpected surprise! I used this to replace the BA computer 2:1 sub in a bandpass setup. I had to square off two opposite sides of the speaker's basket to make it fit, so I knew I better like this. This completely surpasses ANYTHING that old BA 'Woofer' could ever play. This sub resides on the floor, and after adjusting all my boost setting lower, you can still hear/feel the surrounding low frequency with absolutely no distortion. Yea, it's a keeper.
Date published: 2013-11-05
Rated 2 out of 5 by from you get what you pay forI got this unit to replace a 5.5 inch sub that came stock in a Pontiac Fiero. I had to build a mounting plate to adapt the speaker to the enclosure opening. The speaker is ok for the money I guess but I was disappointed with the rigidity of the frame or centering of the voice coil in the magnet gap as received. The cone was not centered and the voice coil seems to rub at above low volumes. I'm not sure if the bolting distorted the frame or if it was just never centered properly. I have built several home speakers using JBL pro drivers and they are quite sturdy. Same thing for some Diamond Acoustics speakers I have mounted. I don't know of any smallish subs that are made that are really good units. I expected better from a $70 speaker though.
Date published: 2013-08-18
Rated 5 out of 5 by from Great bass driver for a 2.1 setupI originally wanted to use a similar 6.5" Tang-Band subwoofer, but the price on the 5.25" neodymium model sold the deal. WinISD suggested roughly a 0.36 cubic foot (10-11L) box, similar to PE's recommendation, but I ended up going with a slightly larger enclosure (12x12x12-inch external) and reducing the interior volume slightly with dense foam for about 0.50 cubic foot.Combined with a 2-inch diameter port at a rather longish (and folded) 20 inches, I get reliable performance from 35Hz on up, with a 1.5dB peak centered at 38Hz. Rather impressive to hear a driver that small go that low. I paired this driver with the Dayton 2.1 Class-D plate amp that PE also sells and ended up with a complete system that both looks and sounds quite nice at a very compact size.
Date published: 2013-06-03
Rated 5 out of 5 by from What an Excellent Subwoofer!!!I had blown out my stock Bose subwoofers in my Nissan Pathfinder. After hours of research and reading reviews I decided to purchase two of these subwoofers. I paired them up with a Kenwood 60x2 amp and I'm very impressed. These subs kick out some amazing bass in the stock Bose enclosure. The bass shakes the truck. I'm a big bass head and these are no 12" subs but for their size they are amazing speakers. They deliver the right amount of bass fill that I was looking for. I would definately recommend these. They are a little pricey but you get what you pay for.
Date published: 2012-08-01
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Product Q&A

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Tang Band W5-1138SM 5-1/4" Neodymium Subwoofer

Is this a freeair subwoofer

Asked by: Neo007
This will work relatively well free air but it will have limited extension below about 50 Hz.
Answered by: MattP
Date published: 2015-03-10

I am a newbie to building speakers but i have a pioneer 12" shallow sub box .5 cu/ft  and a 12" dayton passive radiator and was considering using this 5 1/4 " sub driver  in that same shallow sub box with the 12 inch passive radiator. possible?

Asked by: pkgerms
This combination would work relatively well in that volume. I would recommend adding 200 grams to the passive radiator for a tuning frequency of 38 Hz.
Answered by: MattP
Date published: 2015-02-23

I am thinking of using this little sub in a DIY sound bar with 2 Tang Band W4-1337SDF powered by Dayton MCA2250E 2.1 25x2 and 1x50. Questions what is the best direction to fire the sub i.e. forward, down, etc... @ .36' what port length and diameter 

Asked by: TXDeerHunter
The orientation of the woofer won't really make any difference in this case. If you plan on having it crossed above about 150 Hz to the other speakers you might want to front fire it, but any lower and it won't matter. I would recommend a 2" diameter port that is 10" long for a tuning frequency of 45 Hz.
Answered by: MattP
Date published: 2015-01-12

I was thinking about this sub "Tang Band W5-1138SM 5-1/4""in a box w/ an internal vol of 0.318 cubic ft with two passive radiators of the same size one on each side. what amp should i use and will this configuration work?

Asked by: scottyc46
Our SA70 subwoofer amplifier would be a good match for this woofer and have a decent amount of headroom available.
Answered by: MattP
Date published: 2014-11-07

Would it be possible to use four of these speakers in an isobaically mounted 4th order bandpass box but instead of using ports i could use passive radiators? When i say isobaric 4th order I am refering to the style of the polk C4 

Asked by: DopeGuy1
Unfortunately we have no way of modeling this type of enclosure using passive radiators instead of port tubes. Based on the model using ports, this is not a practical design using these drivers, as the box volumes are very small and port lengths are astronomical, with two 2.5" ports needing to be over 200" long. A standard vented box would be much better suited for these woofers.
Answered by: MattP
Date published: 2014-08-18

When I model this in various tools the most consistent result for a sealed box is 5-6L F3 was in the low 70s.  I'm trying to keep the box small (so sealed) but would like to get another 10hz our of it. Possible? Or do I need to go to vented?

Asked by: Ezas
The F3 will only tell you so much when it comes to what you can expect from a driver. Depending on application, I will generally look at the F10 number for a more realistic bottom end when room or cabin gain is applied. With an F3 of 70, you can expect the actual extension to reach the mid 40's.
Answered by: MattP
Date published: 2014-07-29
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