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Parts Express 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.
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List Price$109.99
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Part # 290-184
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Highlights
  • 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!

Product Details

Parts Express 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
Parts Express Replacement Woofer for 15" Realistic Mach One 8 Ohm
  • BrandParts Express
  • Part Number290-184
  • UPC844632083310
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (31 Reviews)
  • Weight12.1 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 Parts Express Replacement Woofer for 15" Realistic Mach One 8 Ohm
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Reviews

Parts Express Replacement Woofer for 15" Realistic Mach One 8 Ohm
Parts Express Replacement Woofer for 15" Realistic Mach One 8 Ohm is rated 4.9355 out of 5 by 31.
Rated 5 out of 5 by from Perfect fit for Mach III SpeakersI purchased these for my Mach 3 speaker cabinets from RadioShack with expectations to cut the hole a little larger but when I went to check the fit it was perfect! No cutting!!!! Just had to change the connector on the negative wire to 1/4"All the mounting holes lined up perfect too!
Date published: 2015-08-22
Rated 5 out of 5 by from like new PerformanceI recently purchased these replacement Mach 1 speakers and they exceeded my expectations!
Date published: 2015-02-20
Rated 5 out of 5 by from You don't need a Mach One to enjoy these woofersMy wife found a pair of huge 70s era Fisher speakers in the trash. They looked awful and sounded worse. But I liked that they had 15 inch woofers. I decided to gut the speakers, and replace all the components. I liked what everyone said about these woofers. I paired them with the FaitalPRO 5FE100 mids (294-1140) and the phenolic ring tweeters (270-252). The result was awesome. What surprised me was how musical these woofers sounded. Most big woofers (and pretty much all subs) just go boom. All notes tend to sound alike. But not with these speakers. It is really great to listen to music with lots of bass with these woofers. I need to go out and find a good Stanley Clarke album now.
Date published: 2015-01-31
Rated 5 out of 5 by from Excellent "True to original replacement"I purchased these woofers for an old pair of Realistic Mach 1's (4029's) that I am the second owner of. The foam on the originals finally gave out, and I was tempted to do a "re-foam" however the fibers in the original cones was looking well "dried-out", and after having read the positive reviews of folks who had purchased these replacement woofers for the Mach 1's, I decided to go that route, and am very pleased that I did! If you are one who likes the sound and characteristics of the Mach 1, and what it "was", these replacement woofers bring that back in spades. These do have the same "warm character", but I would not call them "boomy" Transients are good, and they have a great bottom-end which is only limited by cabinet size. There are "mods" which can be found on line to "improve" the old Mach 1's, a change of the crossover caps, allowing the woofer to have acoustic access to the midrange horn enclosure etc, however all of the caps in my pair were still within spec, and in the interest of keeping them "as-is" and "vintage", other than using the updated woofers, I left mine as they were originally designed. Most people either "do", or "Don't" like horn loaded drivers, but if you do, these are worth restoring, in my opinion. Although, they do have a degree of "delicate-competence", these are not "Audiophile" speakers, they are in a word "fun" They can get very loud, but mine are mostly run in a large living room at 1 watt or less. Imaging, for me is not high on my priority list, since even the position of one's head in your listening position can alter that greatly, but they are very decent in that department. In short, if you want to "revive" your vintage Mach 1's I would highly recommend these replacement woofers. Installation is a breeze , and the outer facing portion of the frame has a nice black gasket around the circumference which blends in perfectly with the front baffle. I'm very pleased with these "remakes" :)
Date published: 2014-12-24
Rated 5 out of 5 by from Exact Replacement/Perfect Match!As a speaker service center we received on of these woofers in for repair and supplying this exact match for a replacement saved the customer money and restore their speaker back to the factory spec. Fantastic!
Date published: 2014-10-31
Rated 5 out of 5 by from I feel these are better than the originals.I purchased a pair of these for a pair of Mach II's I found in the dumpster. Some idiot tossed them because the surrounds rotted out. I refinished them, replaced the mids and woofers and now my system is complete with my modified Nova 7B's and Optimus T-70's. They still need to be completely broken in yet but sound awesome so far. The optimus T-70's received new GRS 8PR-8 eight inch woofers and the originals never never sounded this great. I highly recommend these for the Mach I and II.
Date published: 2014-09-20
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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.
Parts Express Replacement Woofer for 15" Realistic Mach One 8 Ohm

i have lost the round plastic surrounds and retaining screws for my mach ones, do you know where i can purchase replacements? i am also looking to purchase new sub woofers

Asked by: danny w
Unfortunately replacement parts like that will only be available used, so Ebay is probably your best bet. These will work very well as Mach One replacement woofers.
Answered by: MattP
Date published: 2015-05-07

What would be the sealed box volume for this 15 inch woofer? Thank you.

Asked by: realwoof
The recommended sealed box for this woofer is 7.5 cubic feet, for an F3 of 35 Hz.
Answered by: MattP
Date published: 2015-06-03

will this fit in the Optimus Mach Three i need to replace mine

Asked by: steveohall
We do not have a cross reference available for this type of thing. 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: 2015-01-05

Could these work on a pair of X-100's as well? I have a pair of them lying around but it's hard to find clear information about these. Thank you very much!

Asked by: jensmaurits
We do not have a cross reference available for this type of thing. 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: 2014-12-16

Will this fit the Mach 2 

Asked by: Darus
We do not have a cross reference available for this type of thing. 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: 2014-12-02

How many watts is this speaker.

Asked by: DEZINE
The 15" Mach One speaker has an RMS Power handling of 125 watts and 250 watts Max.
Answered by: TomI
Date published: 2014-09-30
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