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Replacement Woofer for 15" Realistic Mach One 8 Ohm

GRS
Part #290-184

Replacement Woofer for 15" Realistic Mach One 8 Ohm

GRS
Part #290-184  
Model: RSRMO-8
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.
Key Features
  • 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!
Your Price: $114.98
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MSRP: $149.99
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Quantity:Qty: 1-3 $114.98/ea
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Overview

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 Details

BrandGRS
ModelRSRMO-8
Part Number290-184
UPC844632083310
Unit of MeasureEach
Weight12.1

Product Specifications

Nominal Diameter15"
Power Handling (RMS)125 Watts
Power Handling (MAX)250 Watts
Impedance8Ω
Frequency Response22 to 1,200Hz
Sensitivity90.7dB 2.83V/1m
Voice Coil Diameter2.25"

Thiele-Small Parameters

Resonant Frequency (Fs)27.6Hz
DC Resistance (Re)7.2Ω
Voice Coil Inductance (Le)2.6mH
Mechanical Q (Qms)5.34
Electromagnetic Q (Qes)0.83
Total Q (Qts)0.72
Compliance Equivalent Volume (Vas)9.4ft³
Mechanical Compliance of Suspension (Cms)0.31mm/N
BL Product (BL)12.65T·m
Maximum Linear Excursion (Xmax)2.25mm

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

Parts Express Staff Recommended Enclosure Volume

Sealed Volume3ft³
Sealed F338.9Hz
Vented Volume4.5ft³
Vented F331.9Hz

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