ISORAY18S

Put It Up, Down, Left or Right, the IR18S is Always Right

Touring Subwoofers ISORAY

Where to buy

Description

Elevated bass that refuses to stay grounded—the CELTO 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 ISORAY 10+ 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	8Ω
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	Marine grade Baltic Birch Plywood Heavily braced with Tongue & Groove
Cabinet finish	Touring Grade Rubberized PolyUrea Black coating Acoustic PU foam behind Front grill
Flying hardware	Fully integrated, cable-free, rigging bi-directional flying ability
Mounting hardware	1pc M20 thread socket
LF	18" CELTO 18EXN1200-8
Woofer Chassis	Die Cast Aluminium
Woofer Voice coil	4" / 100 mm long throw
Crossover	No, active mode only
Connectivity	Genuine NEUTRIK 2pcs Speakon NL4MP 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_CCA118S_A0_20250707_WAB_CAD CELTO_CCA118S_A0_20250707_WAB_CAD	CELTO_CCA118S_A0_20250707_WAB_CAD	PDF	83.2 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