Replacement Woofer for 15" Realistic Mach One 8 Ohm

We've produced a 15" driver that features the same warm, thundering sound characteristics as the original, but thanks to contemporary materials and technology will last far longer.
  • Modern reproduction of the famous Mach One design
  • Resurrect your Mach One speakers from the Seventies!
  • Same voicing but up-to-date materials and technology
  • 2-1/4" copper voice coil on brass former
  • Replaces the 4024 8 ohm version (1976-1981)
  • Great results in custom acoustic suspension designs, too!
Part # 
Weight: 12.1 lbs.  
List Price$109.99
You Save27%
Your Price
Buy 4-up$75.35
Part # 290-184
Qty:  EA
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Product Details

Replacement Woofer for 15" Realistic Mach One 8 Ohm

Radio Shack produced the Realistic Mach One speaker for almost ten years, beginning in the 1970s. The Mach One 15" 3-way system is considered one of the finest loudspeakers offered by Radio Shack. Over time, many Mach Ones have been lost due to foam rot and old age. We've produced a 15" driver that features the same warm, thundering sound characteristics as the original, but thanks to contemporary materials and technology will last far longer. Now you can resurrect your set of Realistic Mach One speakers with completely new woofers, giving them a fresh lease on life! Replaces Realistic Mach One, Mach Two, 3802, 40-4029, 40-4032, 40-4032A, Optimus Pro 4000. Note: This unit is an exact replica of the Mach One. The Mach Two is slightly different, but this unit works great for them too!

Product Specifications
  • Nominal Diameter15"
  • Power Handling (RMS)125 Watts
  • Power Handling (max)250 Watts
  • Impedance8 ohms
  • Frequency Response22 to 1,200 Hz
  • Sensitivity90 dB 2.83V/1m
  • Voice Coil Diameter2.25"
Thiele-Small Parameters
  • Resonant Frequency (Fs)22 Hz
  • DC Resistance (Re)7.2 ohms
  • Voice Coil Inductance (Le)1.82 mH
  • Mechanical Q (Qms)4.94
  • Electromagnetic Q (Qes)0.63
  • Total Q (Qts)0.56
  • Compliance Equivalent Volume (Vas)12.09 ft.³
  • Maximum Linear Excursion (Xmax)2.5 mm
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialFoam
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerBrass
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter15.25"
  • Baffle Cutout Diameter13.75"
  • Depth6.25"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume7.54 ft.³
  • Sealed F335 Hz
  • Vented Volume23.32 ft.³
  • Vented F317 Hz
Replacement Woofer for 15" Realistic Mach One 8 Ohm
  • BrandParts Express
  • Part Number290-184
  • UPC844632083310
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (25 Reviews)
  • Weight12.1 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.

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Replacement Woofer for 15" Realistic Mach One 8 Ohm
Replacement Woofer for 15" Realistic Mach One 8 Ohm is rated 4.92 out of 5 by 25.
Rated 5 out of 5 by from Happy with my productworks perfectly and will make sure they will be used by others,
Date published: 2014-07-08
Rated 5 out of 5 by from Great SpeakerThis speaker is an awesome replacement woofer for the Radio Shack Mach 2 Cabinet. Sounds great.... Highly Recomended!
Date published: 2014-06-19
Rated 5 out of 5 by from The real thing.In addition to owning a pair of 1981 vintage Mach Ones, I worked for Radio Shack from mid 70s to early 80s and know this speaker very well. This is truly a direct replacement for the Mach One 15" woofer and worked perfectly for me.
Date published: 2014-05-13
Rated 5 out of 5 by from These woofers will move some serious air!Purchased a set of these as part of a Mach One restoration project for my brother. These new woofers were installed in a set of Mach One cabinets from 1976 - as I understand, this was very first year these appeared on the floors of Radio Shack stores everywhere.Dayton Audio really seemed to have done their homework with manufacturing these 15" monsters. Everything is there in terms of fitment, sound quality and looks - right down to the signature turbine reinforcement design of the cone. Bass response appears to be tight and perhaps even a bit more accurate from the old originals. I couldn't be happier (I know my brother is the happiest!) with Dayton Audio's decision to actually recreate these to keep all those vintage Realistic Mach Ones alive. And much thanks to Parts Express for the great pricing, support, and hassle free shipping!
Date published: 2014-05-05
Date published: 2014-04-28
Rated 5 out of 5 by from Great Sub!I had a set of the Mach 2's back in the 1980's, and found these as replacement subs for the Mach speakers, all I can say is WOW! I replaced the 15" subs in my Fisherspeaker boxes and WHAT AN IMPROVEMENT!!
Date published: 2014-03-10

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.
Replacement Woofer for 15" Realistic Mach One 8 Ohm

Is this item shipped over to the u.k for free

Asked by: ozzy123
Please contact our sales and customer service for prices and shipping options. sales@parts-express.com or 800-338-0531 x2.
Answered by: MattP
Date published: 2014-08-20

Hello I got realistic Mach two 15 inch iwoofer I saw Mach 1 15 inch woofer for sale can you tell me the differance I had my mach two for. 28 years the cone is rip I tried different 15 inch speakers but it don't sound the same does the mach 1 do the job?

Asked by: Soulfella
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: 2014-08-04

What mods if any are needed to use thes in mach 2 boxes?

Asked by: Bocephus01
Other than possible cutout modifications, the best thing you could do is seal the port in the Mach II boxes for better results with this woofer.
Answered by: MattP
Date published: 2014-06-09

What is the weight of the magnet?

Asked by: Manchild11
Magnet weight is not a specification that the manufacturer provides on this woofer. It is likely 30-40 oz.
Answered by: MattP
Date published: 2013-12-23

Wich Class-D Audio Amplifier Board to drive my Mach One?

Hello I just bought 2 replacement woofer here for my mach one, while browsing parts express, I found out about those amplifier board. Wich model should I buy to drive my speakers, and can you tell me wich power supply to buy at the same time, volume knob etc, etc. By the way I will probably modify my woofer in 4 ohms instead of 8. Thank you for your time, have a nice day.
Asked by: Sebastien
I would recommend the 2x100 watt board and the items below to go with it.
Answered by: MattP
Date published: 2013-07-10

Why such a superior F3 performance in vented alignment when EBP says 'Use sealed"?

Given that the EBP is at 39.42 well within the sealed parameters, why does this driver perform so well in a vented alignment with an F3 so low? Is something "lost" when this driver is used vented rather than sealed, the enclosure size is still very doable?
Asked by: Richard Ellis
You can certainly use this in a vented enclosure although to achieve that F3 the volume would have to be around 24 cubic feet.
Answered by: MattP
Date published: 2013-04-17

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