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https://www.decware.com/cgi-bin/yabb22/YaBB.pl SUPPORT FORUMS FOR DECWARE SPEAKER PLANS >> DECWARE Imperial support forum >> EVX-180B: Suitable for Imperials? https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1134072528 Message started by Sean on 12/08/05 at 19:08:48 |
Title: EVX-180B: Suitable for Imperials? Post by Sean on 12/08/05 at 19:08:48 I have an opportunity to pick up a pair of these drivers at a low price. Would these perform well in an Imperial, or is the excursion too high? |
Title: Re: EVX-180B: Suitable for Imperials? Post by JimP on 12/08/05 at 20:11:01 Post some specs or a link. |
Title: Re: EVX-180B: Suitable for Imperials? Post by DirtDawg on 12/08/05 at 20:26:16 Is this the beast? DanK has 18s in his Imperials, but I can't remember which ones. WOOFER MODEL EVX-180B SPECIFICATIONS Overall Diameter 18.2" / 462.3mm THIELE-SMALL PARAMETERS Resonant Frequency (fs) 29 Hz Impedance (Re) 5 ohms Coil Inductance (Le) 1.6 mH Electromagnetic Q (Qes) .285 Mechanical Q (Qms) 4 Total Q (Qts) .266 Max. Displacement (Xmax) 6.4 mm Compliance Equivalent Vol. (Vas) 416.3 liters / 14.7 cu.ft. Surface Area of Cone (Sd)m2 .122 m2 Reference Efficiency 3.4% |
Title: Re: EVX-180B: Suitable for Imperials? Post by Sean on 12/09/05 at 00:56:59 Specs: Power Handling (see Power-Handling Test section): 1,000 watts continuous program Voice-Coil Diameter: 102 mm (4.0 in.) Sensitivity (SPL at 1 W/1 m), 100-800-Hz average): 98 dB Impedance, Nominal: 8 ohms Minimum: 7 ohms Frequency Response (see Figures 1, 2 and 10): 20-2,000 Hz Highest Recommended Crossover: 500 Hz Magnet Assembly Weight: 8.3 kg (18.3 lb) Physical Constants, Effective Piston Diameter: 394 mm (15.5 in.) Total Moving Mass: 0.127 kg (0.280 lb) Voice-Coil Winding Depth: 20.3 mm (0.80 in.) Top-Plate Thickness at Voice Coil: 8.9 mm (0.35 in.) BL Factor: 21.8 tesla-meters Thiele-Small Parameters, fs: 29 Hz VAS: 416 liters (14.7 ft3) QES: 0.29 QMS: 4.00 QTS: 0.27 RE: 5.0 ohms O: 3.4% SD: 0.122 m2 (189 in.2) MMD: 0.127 kg (0.280 lb) LE: 1.6 mH CMS: 0.200 mm/N RMS: 6.86 mechanical ohms PE(max): 600 watts xmax 1: 6.4 mm (0.25 in.) Xlim 2: 25 mm (0.98 in.) Thermal Rise after Power Test: 82 °C (147 °F) Typical Vented Enclosures (see Recommended Enclosures section): 170-283 liters (6-10 ft3) tuned from 28 Hz to 45 Hz Electrical Connections (see Electrical Connections section), Connector Type: Push terminals for bare wires Polarity: A positive voltage applied to the positive (red) terminal produces a positive pressure at the front of the cone Additional Descriptive Information, Magnet Weight: 3.2 kg (7.0 lb) 1. Xmax is the one-way peak excursion that produces 10% distortion of the current waveform when driven in free air at fs. 2. Xlim, or displacement limit, is the one-way peak excursion which, when exceeded, will cause physical damage to the drive mechanisum. Magnet Material: Barium ferrite Frame: Cast aluminum Frame finish: Voice-Coil Material: Aluminum Voice-Coil Insulation: Polyimide, 220 °C (428 °F) rating Voice-Coil Form: Polyimide Plating of Steel Parts: E-coat (XXX???) Dimensions, Outer Diameter: 460 mm (18.2 in.) Depth: 200 mm (7.92 in.) Bolt-Hole Diameter: 7.1 mm (0.281 in.) Bolt-Circle Diameter: 438 mm (17.38 in.) Net Weight: 11.3 kg (25 lb) Shipping Weight: 14.1 kg (31 lb) |
Title: Re: EVX-180B: Suitable for Imperials? Post by stvcmty on 12/09/05 at 02:55:17 The qts shows the magnet is strong, so the driver should be suited to use in an imperial. |
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