Speaker Components Speaker Building 3-38 Drivers 3 Section GRS 3FR-4 Full-Range 3" Speaker Driver • Coated paper cone with foam surround for clear sound • Pincushion-shape frame with front gasket Specifications: • Power handling: 10 watts RMS/20 watts max • Impedance: 4 ohms • Frequency response: 135-16,000 Hz • SPL: 81 dB 2.83V/1m • Fs: 135 Hz • Qts: 0.488 • Xmax: 3 mm. #292-436 GRS 8FR-8 Full-Range 8" Speaker Pioneer Type B20FU20-51FW • Replacement for Pioneer B20FU20-51FW • GRS quality construction • 1 year warranty Specifications: • Power handling: 60 watts RMS/85 watts max • Impedance: 8 ohms • Frequency response: 39-16,000 Hz • SPL: 91 dB 2.83V/1m • Fs: 39 Hz • Vas: 2.26 ft³ • Qts: 0.4 • Xmax: 3 mm. #292-430 GRS 4FR-8 Full-Range 4-1/2" Speaker Pioneer Type A11EC80-02F • Replacement for Pioneer A11EC80-02F • Extended bandwidth and high sensitivity Specifications: • Power handling: 15 watts RMS/30 watts max • Impedance: 8 ohms • Frequency response: 100-10,000 Hz • SPL: 91 dB 1W/1m • Fs: 100 Hz • Qts: 0.82 • Xmax: 1 mm. #292-434 Modern reproduction of the famous CTS design Phenolic Ring Tweeter Replacement for AR-4X CTS Marantz and More • Modern reproduction of the famous CTS design used by Marantz, Altec, and many others • High efficiency and smooth response Specifications: • Power handling: 30 watts RMS/60 watts max • Impedance: 8 ohms • Frequency response: 2,000-15,000 Hz • SPL: 90.3 dB 2.83V/1m • Fs: 1,084 Hz. #270-252 Square Frame Replacement Woofers • Attractive square stamped steel frame • Smooth response and hefty bass output • Treated paper cone • Foam half roll edge • Choice of white or black cone 10" Woofer Specifications: • Power handling: 75 watts RMS/150 max • Impedance: 8 ohms • Frequency response: 32-3,500 Hz • SPL: 89 dB 2.83V/1m • Fs: 32 Hz • Vas: 4.85 ft³ • Qts: 0.62 • Xmax: 4.25 mm. #290-912 12" Woofer Specifications: • Power handling: 80 watts RMS/160 max • Impedance: 8 ohms • Frequency response: 35-3,000 Hz • SPL: 90 dB 2.83V/1m • Fs: 34.8 Hz • Vas: 5.87 ft³ • Qts: 0.69 • Xmax: 4.25 mm. #290-916 Bring back your 901’s glory days Replacement Speaker Driver for Bose 901 4-1/2" • Drop-in replacement for Bose 901 drivers • Each individual driver is hand checked and tested • Fits Series III, IV, V and VI models, and more • Optimized cone/coil/suspension for linearity and reliability • 1 ohm nominal impedance Specifications: • Power handling: 30 watts RMS/60 max • Impedance: 1 ohms • Frequency response: 83-15,000 Hz • SPL: 91.5 dB 2.83V/1m • Fs: 83.44 Hz • Vas: 0.24 ft³ • Qts: 0.36. #290-922 • 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) Replacement Woofer for 15" Realistic Mach One Specifications: • Power handling: 125 watts RMS/250 max • Impedance: 8 ohms • Frequency response: 22-1,200 Hz • SPL: 90 dB 2.83V/1m • Fs: 22 Hz • Vas: 12.09 ft³ • Qts: 0.56 • Xmax: 2.5 mm. #290-184 Low cost, great sound, great warranty – GRS Speakers GRS Poly Cone Subwoofers • Polypropylene cone for perfect balance of stiffness, mass, and self-damping • Butyl rubber surround ensures high excursion and long-term durability • Large 1-1/2" voice coil and bumped back plate enable high power handling • Long-throw design for deep, powerful bass 8" #292-480 10" #292-482 12" #292-484 Part # Model Size Impedance Power Handling (Watts RMS) Frequency Response Sensitivity (2.83 V/1m) Fs Xmax 292-480 8SW-4 8" 4 Ohm 80 40 - 800 Hz 88 49 Hz 6 mm 292-482 10SW-4 10" 4 Ohm 120 34 - 800 Hz 88 47 Hz 8.5 mm 292-484 12SW-4 12" 4 Ohm 120 29 - 800 Hz 88 29.6 Hz 8.5 mm
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