is-18 and is-18a Features
- 18“ transducer with rubber surround and 4“ (100 mm)
- voice coil
- 600 W/1200 W, long term/program power handling (IS-18)
- 600 W continuous power (IS-18a)
- Usable response down to 35 Hz
- Max long term output 131 dB
- High-density wood enclosure with durable textured finish
Applications
- Ideal companion for i-Class full-range systems
- Restaurants and cafes
- Bars and clubs
- Corporate facilities
- House of worship
- Retail outlets
- Airports
i-Class systems are designed for AV contractors seeking a high-performance alternative to plastic box loudspeakers. By combining professional-grade components and rugged wood enclosures, i-Class models deliver sonic performance that far exceeds their competition.
For systems requiring greater LF extension, the is-18 and is-18a vented subwoofers are the perfect companions for the i-Class full-range models. Both subwoofers combine precision, low-pass crossovers with a professional-grade driver that incorporates a large, 4-inch voice coil for increased power handling and decreased power compression. Optimally tuned ports work in concert with the direct radiating driver to achieve a perfect balance of impact and definition.
The is-18a’s onboard class A/B amplification produces 600 watts continuous power output. A variable, 18 dB per Octave high-pass output allows easy satellite integration, while a phase switch ensures perfect LF alignment and staging. Large heat-sinks and efficient amplifier design eliminate the need for noisy cooling fans.
Both models feature robust, multi-ply wood enclosures with a rugged industrial-grade coating. The cabinet front features a protective steel grill with a water resistant powder coating.
Specifications
| SPECIFICATIONS | is-18 | is-18a |
|---|---|---|
| DESCRIPTION | Passive Single 18-in Subwoofer | Powered Single 18-in Subwoofer |
| ACOUSTIC DATA | ||
| Frequency Response (+- 3 dB) | 35 – 250 Hz | 34 – 200 Hz |
| Frequency Range (-10 dB) | 29-300 Hz | 32 – 230 Hz |
| Sensitivity (1 W/1 m) | 98 dB | 98 dB |
| Power Handling Long Term(Continuous Power Output for powered Versions) | 500 watts | 600 watts |
| Power Handling Program | 1200 watts | N/A |
| Max Peak SPL(band limited pink noise 6 dB crest factor) | 131 dB SPL | 128 dB SPL |
| Max SPL Long Term (AVG SPL @1 band limited pink noise 6 dB crest factor)) | 125 dB SPL | 125 dB SPL |
| Coverage Horizontal | 360 degrees – 6 dB | 360 degrees – 6 dB |
| Coverage Vertical | 360 degrees – 6 dB | 360 degrees – 6 dB |
| TRANSDUCER DATA | ||
| LF Driver Description | 18”, paper cone, cloth surround, 4” (100 mm) voice coil, ferrite, 19 mm winding, 10mm gap height, | |
| Impedance | 8 Ohms | N/A |
| Connectors | NL4 | XLR/1/4in Combojack |
| PHYSICAL DATA | ||
| Cabinet Material | Multi-ply wood | |
| Cabinet Surface | Black polyurethane coating | |
| Dimensions (H x W x D) | 27.36 x 23.43 x 25.59 in (695 x 595 x 650 mm) | |
| Weight | Net: 97 lbs / 44 kgt | Net: 108 lbs / 49 kg |
Download the is-18 & is-18a Datasheet