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| Contact Us For Information, Se Habla Espanol 718 272-7228 / 215 Conklin Ave. Brooklyn NY 11236 |
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The 18iD is an 18 inch neodymium high performance subwoofer. The loudspeaker has been optimized for vented and bandpass subwoofer cabinet designs and is recommended to use a Class D or iPal (tm*) amplifier able to deliver 3600 Watt program power without clipping. Eighteen Sound engineers have obtained the best possible results with today's available materials in terms of clean and undistorted LF reproduction at a ultra high SPL, with the lowest possible power compression figure. The transducer design features include a large displacement suspension system specifically designed for matching the composite fiber reinforced, straight ribbed cone. Thanks to the Triple Silicon Spider (TSS) technology, the 18iD is able to control the moving mass with high linearity, showing an exceptional stability of mechanical parameter values in the long term. Bl force factor, as well as all other electro-dynamic parameters, are linear within the working range. This, together with the exceptional high excursion behavior - 70mm before damage, ±14mm linear Xmax - makes the 18iD an extremely low distortion, highly dynamic transducer. The 18iD features a state-of-the-art 5,3" inside outside ISV (Interleaved Sandwich Voice-Coil) enabling the 18iD to deliver extraordinary transient results. The 18iD has been developed after intense FEA and fluidodynamics simulation and testing,focusing on dissipating the heat generated by the powerful voice coil. Special attention was given to the optimization of air flow into the gap without introducing audible noise. A low density material air diffractor placed into the heatsink acts as a cooling system, increasing the power handling capability and lowering the power compression figure.
Key Features Class D amplifier optimized for maximum power transfer Conforms to Powersoft™ iPal® standards 95 dB SPL 1W / 1m average sensitivity 135mm (5.3") split winding, four layer ISV aluminum voice coil 3600 W program power handling Triple Silicon Spider (TSS) for improved excursion control Aluminum demodulating ring (SDR) for lower distortion
General Specifications| Nominal Diameter | 460mm (18 in) | | Rated Impedance | 2 Ohm | | AES Power | 1800W | | Program Power | 3600W | | Peak Power | 10000W | | Sensitivity | 95 dB | | Frequency Range | 30 - 2500 Hz | | Power Compression at -10dB | 0,7 dB | | Power Compression at -3dB | 1,5 dB | | Power Compression at Full Power | 2,2 dB | | Max Recomm. Frequency | 200 Hz | | Recomm. Enclosure Volume | 110 - 350 lt. (3,89 - 12,36 cuft) | | Minimum Impedance | 2 Ohm at 25°C | | Max Peak To Peak Excursion | 70 mm (2,76 in) | | Voice Coil Diameter | 135 mm (5,31 in) | | Voice Coil winding material | Copper wire | | Suspension | Triple Roll, Heavy Polycotton | | Cone | Straight ribbed carbon fiber loaded cellulose |
Thiele Small Parameters| Fs | 40 Hz | | Re | 1,5 Ohm | | Sd | 0,113 sq.mt. (175.15 sq.in.) | | Qms | 5,5 | | Qes | 0,27 | | Qts | 0,26 | | Vas | 67 lt. (2,36 cuft) | | Mms | 420 gr. (0,92 lb) | | BL | 24 Tm | | Linear Mathematical Xmax | ±15.5 mm (±0,6 in) | | Le (1kHz) | 1,22 mH | | Ref. Efficiency 1W@1m (half space) | 94,2 dB |
Mounting information| Overall diameter | 462 mm (18,19 in) | | N. of mounting holes and bolt | 8 | | Mounting holes diameter | 8,5 mm (0,33 in) | | Bolt circle diameter | 440mm (17,32 in) | | Front mount baffle cutout ø | 416 mm (16,38 in) | | Rear mount baffle cutout ø | 422 mm (16,61 in) | | Total depth | 236 mm (9,29 in) | | Flange and gasket thickness | 26 mm (1,02 in) | | Net weight | 12,5 kg (27,56 lb) | | Shipping weight | 14 kg (30,86 lb) | | Packaging Dimensions | 14 kg (30,86 lb) |
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Return Information We want you to be completely happy with your purchase. If you are not satisfied with any product, you may return it for a refund of the purchase price within a fair amount of time from the shipping date (30 days). If your purchase was eligible for Free Shipping, the shipping cost will be deducted from your credit or refund. Returns must be in the complete and original packaging with all accessories and complete documentation (Owner's Manual, warranty card, quick start guides, etc.), show no signs of wear or use, and include a Return Authorization number or be subject to a restocking fee. Products like software, speakers, tubes, personal items (such as in-ear monitors, etc), and items which are not normally stocked ("Special Orders", discontinued products, close-outs, used products, etc.) are not returnable.
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