The IS118 is the companion subwoofer to the IS7. The enclosure is loaded with a light weight, long excursion, 18” ND18-S Kevlar Neodymium driver utilizing Adamson’s Advanced Cone Architecture. It is mounted in an ultra-efficient front-loaded enclosure, designed to reproduce clean, musical low frequency information.
The cabinet construction uses marine grade birch plywood as well as aircraft grade aluminum and steel, and is equipped with two front and back Speakon™ NL4 connectors, or barrier strips available upon request. A dual grill solution is used so that when arranged in cardioid mode, the appearance does not change. The integrated rigging system matches the rigging for the IS7 and can be flown in the same array with a simple adapter frame.
| Frequency Range (+/-3 dB) | 35 Hz - 100 Hz |
| Maximum Peak SPL** | 133 dB |
| Components LF | ND18-S 18” Kevlar Neodymium Driver |
| Nominal Impedance LF | 8 Ω |
| Power Handling (AES / Peak) LF | 500 / 2000 W |
| Rigging | Integrated Rigging System |
| Connection | 4x Speakon™ NL4 (2x Front 2+/2-, 2x Rear (1+/1-), or Barrier Strips / IP67 Cable Gland with Weatherized |
| Height Front (mm / in) | 507 / 19.95 |
| Width (mm / in) | 527 / 20.75 |
| Depth (mm / in) | 529 / 20.81 |
| Weight (kg / lbs) | 30 / 66.2 |
| Supported Processing | Lake |
**12 dB crest factor pink noise at 1m, half space, using specified processing and amplification
.png "IS118") | IS7 & IS118 Support Frame (930-0026) | Suspension, transition and stacking frame for IS7 & IS118 |
 | Extended Beam (930-0021) | Extension beam for larger angles and frame linking |
 | Moving Point Extended Beam (930-0033) | Extension beam with continuously adjustable pick point |
 | Line Array H-Clamp (932-0047) | Horizontal articulator clamp to be used with CS-Series/S-Series/IS-Series line array rigging frames (max load: 200 kg) |
 | Extended Lifting Plates (932-0043) | Lifting plates with fine resolution pick points for single point hangs (2 per set) |
| IS118 Spec Sheet | One page spec sheet for the IS118 | n/a |
| IS118 User Manual | Comprehensive User Manual for the IS118 | n/a |
| IS-Series Line Array Rigging Manual | Comprehensive User Manual for IS-Series Line Array Rigging Accessories | n/a |
| IS-Series Brochure | Product brochure for Adamson's IS-Series | n/a |
| Sketchup Library | Sketchup Models of all IS-Series enclosures and rigging accessories | n/a |
| 3D CAD Drawings | 3D CAD drawings of the IS-Series enclosures | n/a |
| Revit Model Library | Revit Models of the IS118 enclosure and accessories | n/a |
| Adamson Amplification Chart V5.3 | Displays the maximum amount of Adamson loudspeakers that can be used with approved amplifiers. | n/a |
| Adamson Load Library 5.3 | Adamson's updated preset library - Requires Lake Controller 7.0.0 or higher | n/a |
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