Alpine SWR-843D Owner's Manual - Page 4

Subwoofer Features and Specifications Features Size Power Handling (RMS/peak) Power Range (RMS) Frequency Response (Hz) Diaphragm Surround Spider Voice Coil Motor Structure Magnet Material Design Material Design Material Design Material Design Pole Geometry Configuration Material SWR-823D SWR-843D Type-R SWR-1O23D SWR-1043D SWR-1223D SWR-1243D 8" 8" 10" 10" 12" 12" 350W/1000W 350W/1000W 600W/1800W 600W/1800W 600W/1800W 600W/1800W 150W-350W 150W-350W 300W-600W 300W-600W 300W-600W 300W-600W 28Hz-200Hz 28Hz-200Hz 26Hz-200Hz 26Hz-200Hz 24Hz-200Hz 24Hz-200Hz Kevlar-Reinforced Pulp Fiber 2-Piece Structural Parabolic Injection Molded Santoprene® High Amplitude Multi-Roll (Patent Pending) Nomex® Progressive 180°C High Temp Wire on Spiral Cut Aluminum Former 4-Layer Dual Voice Coil Compound Radius Curve (US Patent #6,639,993) Integrated Shorting Sleeve with Radial Vented VC Heat Transfer (US Patents #7,634,101; #7,272,238; other Patents Pending) High-Power Strontium Ferrite Frame Terminals Tinsel Leads Gasket Configuration Material Design Layout Design Design Design 6-Piece (8") / 10-Piece (10"/12") Radially Segmented, Double Stacked Cast Aluminum Single-Piece Casting with Airflow Management System (US Patent #6,678,837; #7,684,585; other Patents Pending) One Sided Heavy Duty 8ga. Push with Housing, Banana Sockets for VC Configuration Jumpers Reinforced Layer Spider Integration (US Patent #6,810,988) Concealed Mount Gasket System and Integrated Grill Ready (US Patent #7,760,900) Enclosure Information Mounting Depth Mounting Diameter - Front Mount Displacement - Front Mount** Added Volume - Reverse Mount (magnet out)** Recommended Enclosure Alignments Sealed Box Volume Range (Gross External Box Dimensions Optimum Sealed Box Gross Internal Volume Net Internal Volume** F3, Qto Vented Box Volume Range (Gross) External Box Dimensions Gross Internal Volume Vent Area (dimensions) Optimum Vented Box Vent Length Vent Displacement Net Internal Volume (Vb)*** F3, ripple, Fb 115 mm (4.525") 115 mm (4.525") 176 mm (6.93") 176 mm (6.93") 0.050 ft3 0.050 ft3 0.035 ft3 0.035 ft3 Sealed, Vented, Bandpass, Infinite Baffle 149 mm (5.875") 231 mm (9.1") 0.080 ft3 0.055 ft3 149 mm (5.875") 162 mm (6.375") 231 mm (9.1") 275 mm (10.9") 0.080 ft3 0.100 ft3 0.055 ft3 0.090 ft3 Sealed, Vented, Bandpass i 162 mm (6.375") 275 mm (10.9") 0.100 ft3 0.090 ft3 0.15-0.50 ft3 0.15-0.50 ft3 0.5-1.0 ft3 0.5-1.0 ft3 0.65-1.25 ft3 0.65-1.25 ft3 13" x13" x 5.5" 13" x 13" x5.5" 12.5" x12.5" x 10' 12.5" x12.5" x 10' 14.5" x 14.5' x 10.5" 14.5' x 14.5" x 10.5" 0.30 ft3 0.30 ft3 0.60 ft3 0.60 ft3 0.90 ft3 0.90 ft3 0.25 ft3 53 Hz, 0.80 0.25 ft3 53 Hz, 0.80 0.50 ft3 43 Hz, 0.90 0.50 ft3 46 Hz, 0.90 0.75 ft3 44 Hz, 0.90 0.75 ft3 43 Hz, 0.90 0.25-0.60 ft3 11" x 8.5" x 20' 0.25-0.60 ft3 0.8-1.5 ft3 0.8-1.5 ft3 1.0-2.0 ft3 1.0-2.0 ft3 11'x 8.5' x 20" 12.5" x 12.5" x 20.5" 12.5' x 12.5" x 20.5" 13.5' x 13.5" x 24" 13.5' x 13.5' x 24" 0.70 ft3 0.70 ft3 1.4 ft3 5.25 in2 (7' x 0.75") 5.25 in2 (7" x 0.75") 11 in2 (11" x 1") 1.4 ft3 1.9 ft3 1.9113 11 ire (11" x 1") 15 in2 (12" x 1.25") 15 in2 (12' x 1.251 15.5' 15.5' 18.5" 18.5" 22" 22" 0.10 ft3 0.10 ft3 0.24 ft3 0.24 ft3 0.29 ft3 0.29 ft3 0.55 ft3 0.55 ft3 1.1 ft3 1.1 ft3 1.5 ft3 1.5 ft3 31Hz, 2dB, 36Hz 31Hz, 2dB, 36Hz 26Hz,4.2dB,35Hz 28Hz,4.5dB,35Hz 27Hz,4.2dB,33Hz 27Hz,3.9dB,33Hz Electro-Mechanical Parameters* Nominal Impedance Frequency Response Sensitivity (SPL@1W/1m)* D.0 Coil Resistance (Re) Inductance (Le) 1kHz/20kHz Free Air Resonance (Fs) 20+20 28 - 200Hz 83.5dB 1.850+1.850 0.87mH/0.30mH 38Hz 40+40 28 - 200Hz 83.5dB 3.70+3.70 1.23mH/0.35mH 40Hz 20+20 26 - 200Hz 83dB 1.850+1.850 2.39mH/1.02mH 29Hz 40+40 26 - 200Hz 83dB 3.70+3.70 3.79mH/1.93mH 31Hz 20+20 24 - 200Hz 85dB 1.850+1.850 2.41mH/1.02mH 28Hz 40+40 24 - 200Hz 85dB 3.70+3.70 3.85mFV1.92mH 31Hz Equivalent Stiffness (Vas) Mechanical Q (Qms) Electrical Q (Qes) Total Q (Qts) Xmaxio (One-Way Xmax © 10% Distortion) 12L (0.42 ft3) 7.8 0.55 0.50 14 mm 12L (0.42 ft3) 7.5 0.60 0.55 14 mm 26L (0.92 ft3) 8.7 0.53 0.50 20 mm 21L (0.75 ft) 7.9 0.57 0.53 20 mm 43L (1.5 ft) 8.5 0.50 0.47 20 mm 38L (1.5 ft) 7.9 0.57 0.53 20 mm Mechanical Excursion, Peak-to-Peak Gap Height (Hag) Coil Height (Hvc) Cone Area (Sd) Voice Coil Diameter Magnet Weight 52 mm 10 mm 29 mm 201 cm2 40 mm (1.6") 52 oz 52 mm 10 mm 29 mm 201 cm2 40 mm (1.6") 52 oz 70mm 10 mm 44mm 332 cm2 65 mm (2.61 128 oz 70mm 10 mm 44mm 332 cm2 65 mm (2.6") 128 oz 72mm 10 mm 44mm 480 cm2 65 mm (2.6") 144 oz 72mm 10mm 44mm 480 cm2 65 mm (2.6") 144oz Note: All specifications are subject to change without notice # All T/S parameters measured/calculated with voice coils connected in series, after break-in. * This commonly misunderstood specification should not be used as a reference for subwoofer output capability. ** Based upon 3/4" (19mm) baffle thickness, with opening cut approximately to gasket inner diameter