GRS SRMO-8 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.

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

GRS RSRMO-8 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!

Specifications for: RSRMO-8 Replacement Woofer for 15" Realistic Mach One 8 Ohm

• Nominal Diameter15"
• Power Handling (RMS)125 Watts
• Power Handling (max)250 Watts
• Continuous Program Power
• Impedance8 ohms
• Sensitivity90 dB 2.83V/1m
• Frequency Response22-1,200 Hz
• Voice Coil Diameter2.25"
• Magnet Weight
• DC Resistance (Re)7.2 ohms
• Voice Coil Inductance (Le)1.82 mH
• Resonant Frequency (Fs)22 Hz
• Mechanical Q (Qms)4.94
• Electromagnetic Q (Qes)0.63
• Total Q (Qts)0.56
• Diaphragm Mass Inc. Airload (Mms)
• Moving Mass Of Diaphragm (Mmd)
• Mechanical Compliance of Suspension (Cms)
• Surface Area of Cone (Sd)
• Volume of Displacement (Vd)
• BL Product (BL)
• Compliance Equivalent Volume (Vas)12.09 ft.³
• Maximum Linear Excursion (Xmax)2.5 mm
• Driver's Mechanical Losses (Rms)
• Cone / Diaphragm MaterialPaper
• Surround MaterialFoam
• Voice Coil Wire MaterialCopper
• Voice Coil FormerBrass
• Dual Voice Coil
• Basket / Frame MaterialSteel
• Magnet MaterialFerrite
• Shielded
• Overall Outside Diameter15.25"
• Overall Depth6.25"
• Baffle Cutout Diameter13.75"
• Bolt Circle Diameter
• # Mounting Holes6
• Mounting Hole Diameter
• Sealed Volume7.54 ft.³
• Sealed F335 Hz
• Vented Volume23.32 ft.³
• Vented F317 Hz