Installation two-way loudspeaker



High efficiency passive-filtered loudspeaker enclosure fitted by a premium 12”/3” (LF/HF) co-axial drive unit
Symmetrical 90° (conical) dispersion
High SPL (133 dB SPL short-term peak @ 1 m)
Surprising power capability in a compact and lightweight package (19.2 kg / 42 lb)
Also designed for use as a stage monitor in a horizontal position (two angles)
Design file for Outline ‘Openarray’ 3D acoustic simulation software


The EIDOS X123W is a classic multi-purpose problem-solver, combining high power with an asymmetric cabinet design allowing myriad applications. Its use of modern co-axial driver technology (12″/3″ LF/HF) allows a very light and compact unit to deliver serious SPL (133 dB SPL short-term peak @ 1 m).

The X123W requires only one amplifier channel for correct operation: the frequency splitting between the LF driver and the HF driver being accomplished by the passive crossover network built into the enclosure. The low-loss passive filter ensures a seamless transition between the high frequency and low frequency drivers. The LF component of the coaxial drive unit is a 12″ transducer while the HF is handled by a 3″ diameter compression driver. This combination of top-quality components allows the X123W to reproduce natural, full-frequency audio from a small and lightweight enclosure.

The EIDOS X123W is in fact perfect for fixed and mobile sound reinforcement applications. The enclosure design allows effective deployment as a stage monitor or compact FOH system component, ideal for a busy sound rental operation, while integral mounting hardware allows use of a speaker stand or wall or ceiling mounting, ideal for installation contractors. The X123W’s innovative Polyurea coating technique forms an elastoplastic protection that is waterproof, very abrasion- and weather-resistant, and interacts with the plywood structure to further increase the cabinet’s sturdiness and vibration absorption capacity. The enclosure is fitted with sixteen M8 threaded rigging points on the top, sides, bottom and rear, that allow single cabinets to be suspended and angled in fixed installations.

The X123W is designed as a fully passive unit using a very high quality onboard crossover network. The system can be controlled via Outline’s iP24 DSP device, based on the iMode proprietary technology, which optimises the frequency response of the loudspeaker according to application via user definable presets.

Eidos X123W has been discontinued, the equivalent product is Vegas 12 CX.


Frequency Response (-10 dB) 55 Hz – 20 kHz
Nominal Dispersion 90° x 90° (H x V)
Impedance (Nom/Min) 8 Ω / 6.5 Ω
Watt AES (Continuous/Peak) 450 W / 1800 W
Maximum SPL Output * 133 dB SPL


Component Low 12″ woofer
Component High 3″ diaphragm compression driver
Loading Low Bass-reflex
Loading High Coaxial horn
Connectors 2 x NL4 in parallel, pins 1+/1-
Cabinet Material Baltic birch plywood
Cabinet Finish Black polyurea coating
Grill Epoxy powder coated
Installation Points  4 x M6, 16 x M8 threaded points
Pole Mount 35 mm socket
Height 550 mm – 21 21/32″
Width 380 mm – 14 31/32″
Depth 350 mm – 13 25/32″
Weight 19.2 kg – 42.3 lb


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