ISORAY18S
Put It Up, Down, Left or Right, the IR18S is Always Right
Description
Elevated bass that refuses to stay grounded—the CELTO Acoustique ISORAY18S delivers a genuine 1200W RMS (4800W peak) with deep, controlled low-end extension in a flyable, arrayable cabinet.
This touring-grade line source subwoofer seamlessly integrates with IsoRay10+ arrays, providing perfect alignment and extended throw for large-scale systems.
Ideal for festivals, arenas, concert tours, theatres, and outdoor events demanding high-impact bass with or without separate ground stacks.
Powered by a premium 18" neodymium driver with ±11 mm linear Xmax and triple forced cooling system for minimal power compression and maximum reliability.
Outdoor-grade Baltic birch plywood cabinet with rubberized PolyUrea finish and cable-free integrated rigging supports safe flying with up to 12 elements.
Achieving impressive sensitivity and up to 137 dB peak SPL while maintaining lightweight design at around 45 kg.
Front and rear Neutrik Speakon connectors with parallel wiring ensure flexible cardioid or standard configurations.
Dedicated presets optimize performance for omni or directional low-frequency control.
The ISORAY18S proves that powerful sub-bass can soar as high as the mains—literally redefining what's possible in compact line array systems.
Key Features
- Real 1200W RMS power capacity
- Premium 18” Neodymium driver with ±11mm linear Xmax
- Triple forced cooling system for low power compression
- Heavy braced cabinet for vibration free dynamic response
- Fully integrated rigging for floor stacking and flying
- Touring grade Ruberrized PolyUrea black paint finish
Applications
Touring
Engineered to endure
Technical specifications
| Speaker type | Flyable line source Subwoofer |
| Power Handling (AES standard) | 1200 W RMS / 4800 W Peak |
| Nominal impedance | 8 ohms |
| Average sensitivity | 97 dB / 1 W / 1 m |
| Maximum SPL (calculated) | 128 dB RMS / 134 dB Peak |
| Frequency response (-6 dB no preset) | 33~100 Hz |
| Nominal directivity (-6 dB) | Omni in usable range. Cardioid preset |
| Cabinet |
Exterior grade Baltic Birch Plywood Heavily braced with Tongue & Groove |
| Cabinet finish |
Touring Grade Rubberized PolyUrea Black coating Acoustic PU foam behind Front grill |
| Floor monitor use | N/A |
| Flying hardware |
Fully integrated, cable-free, rigging bi-directional flying ability |
| Mounting hardware | 1pc M20 thread socket |
| LF |
18" CELTO ACOUSTIQUE 18EXN1200 |
| Woofer Chassis | Die Cast Aluminium |
| Woofer Voice coil diameter | 4" / 100 mm long throw |
| Crossover | No, active mode only |
| Connectivity |
Genuine NEUTRIK 2pcs Speakon NL4 mP on rear, 1pc on front with switch for 1+/-1 or 2+/2- input |
| Speaker size (HxWxD) | 585 x 420 x 780 mm |
| Speaker Weight | 45 kg |
| Shipping information |
52 kg 730 x 540 x 900 mm |
| Accessories |
CCA118S-FR (large flying frame) CCA-IFR (Intermediary flying frame) CCA118S-WB (metal wheelboard) CCA118S-SBAG (padded cover bag) CPC-70 (pole bar with crank) SUBWHKIT100C (castor wheel kit) |
Product files
| Name | Category | Type | Size | |
|---|---|---|---|---|
|
CELTO_CCA-IFR_A0_20250708_WEB_CAD
CELTO_CCA-IFR_A0_20250708_WEB_CAD
|
CELTO_CCA-IFR_A0_20250708_WEB_CAD | 48.7 KiB | Download | |
|
CELTO_CPC-70_A0_20250721_WEB_CAD
CELTO_CPC-70_A0_20250721_WEB_CAD
|
CELTO_CPC-70_A0_20250721_WEB_CAD | 33.1 KiB | Download | |
|
CELTO_CCA118S-WB_A0_20250708_WEB_CAD
CELTO_CCA118S-WB_A0_20250708_WEB_CAD
|
CELTO_CCA118S-WB_A0_20250708_WEB_CAD | 83.6 KiB | Download | |
|
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD
|
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD | 37.1 KiB | Download | |
|
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD
|
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD | 48.1 KiB | Download | |
|
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD
|
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD | 92.7 KiB | Download | |
|
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD
|
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD | 53.0 KiB | Download | |
|
CELTO_CCA118S_A0_20250707_WAB_CAD
CELTO_CCA118S_A0_20250707_WAB_CAD
|
CELTO_CCA118S_A0_20250707_WAB_CAD | 83.2 KiB | Download | |
|
CELTO_CCA118S-WB_A0_20250708_WEB_CAD
CELTO_CCA118S-WB_A0_20250708_WEB_CAD
|
CELTO_CCA118S-WB_A0_20250708_WEB_CAD | DWG | 282.9 KiB | Download |
|
CELTO_CCA-IFR_A0_20250708_WEB_CAD
CELTO_CCA-IFR_A0_20250708_WEB_CAD
|
CELTO_CCA-IFR_A0_20250708_WEB_CAD | DWG | 167.2 KiB | Download |
|
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD
|
CELTO_SUBWHKIT100C_A0_20250721_WEB_CAD | DWG | 740.1 KiB | Download |
|
CELTO_CPC-70_A0_20250721_WEB_CAD
CELTO_CPC-70_A0_20250721_WEB_CAD
|
CELTO_CPC-70_A0_20250721_WEB_CAD | DWG | 781.7 KiB | Download |
|
CELTO_CCA118S_A0_20250707_WAB_CAD
CELTO_CCA118S_A0_20250707_WAB_CAD
|
CELTO_CCA118S_A0_20250707_WAB_CAD | DWG | 311.9 KiB | Download |
|
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD
|
CELTO_CCA118S-FR2_A0_20250708_WEB_CAD | DWG | 334.4 KiB | Download |
|
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD
|
CELTO_CCA118S-FR1_A0_20250708_WEB_CAD | DWG | 191.5 KiB | Download |
|
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD
|
CELTO_CCA118S-SBAG_A0_20250708_WEB_CAD | DWG | 258.8 KiB | Download |
Expand your system
The ISORAY18S does wonder when combined with these other products from our range
