Si-X series
Unobtrusive, fixed sound installation with sonic accuracy
- 2-way reflex systems
- Folded horn and Direct Radiating subwoofers
- 25.4mm Titanium high frequency compression drivers
- Low distortion, high power woofers
- 70° x 70° High Frequency Horn
- Multifaceted 40° x 50° MDF enclosure
- 20 x M8 hanging points
- NL4 & Barrier Strip speaker inputs
- U-shaped steel mounting bracket included
- Install in houses of worship, shops and other public areas
SI-28X -
Discontinued

- 2 x 8.0″ passive
- 1.75″ HF compression driver
- M8 x 20
- 250 watts AES (RMS)
- 500 watts Programme
- 1000 watts Peak
- 121 dB Max SPL @ 1 meter
- Bracket included
SI-18BX

18″ passive subwoofer
4.0″ voice coil
800 watts AES (RMS)
1600 watts Programme
3200 watts Peak
134 dB Max SPL @ 1 meter
4Ω or 8Ω models
RECOMMENDED AMPLIFIERS

Unobtrusive audio
The SI-X speaker series have been designed for unobtrusive fixed installation, where sonic accuracy, detail and high SPL are essential characteristics.
From the SI-10X to the SI-15X plus three high power subs, you have what it takes to assemble the system that your music deserves. With both barrier strip and 2 x NL4 (speakON compatible) connectors, SI-X also offers versatility when making the connections.
An important factor in loudspeakers is the smoothness of the sound coverage. Many speakers that may sound acceptable in the horizontal plane have problems in the vertical plane. The SI-X speakers exhibit very smooth and well-behaved sound dispersion characteristics in both the horizontal and vertical planes making positioning and set-up less critical. Everyone in the room will hear the same quality sound.
Because of the multi-faceted cabinet design, the SI-X speakers can be positioned on the floor as a stage monitor or mounted on a wall or ceiling (using the U-shaped brackets included with the speaker).
The SI-X Series rugged cabinets feature 20 x M8 threaded inserts to facilitate the safe installation of the loudspeaker and are available in black or white durable paint finishes.
Wide coverage
SI-X series is consistently voiced so multiple configurations depending on your venue, still result in a full, balanced sound.
Full range models feature a 70° x 70° conical waveguide, providing open and detailed high frequency extension with even and predictable dispersion.

Adaptive cabinet design
The multi-faceted design of the SI-X series means that it can be positioned next to a stage, wall or ceiling.
This versatility suits the SI-X series to a diverse range of applications such as live performance halls, houses of worship, schools, shops, restaurants bars and countless public places – for monitoring, front of house and more.

To suit any install
The full range enclosures are complimented by 3 subwoofers for extended low frequency response and increased SPL.
Available in both black and white painted finishes, the SI-X series features multiple m8 rigging points to suit the widest range of flown applications.
Brackets are included as standard too.

NL4 or Barrier strip
The rear panel of all SI-X models features speakON compatible (NL4) connectors…..plus a barrier strip for connection with bare wires.
Simple connectors – Simple installations.

Available in Black
Available in WHITE
Full metal bracket
SI-X Full range models (SI-10X, SI-12X and SI-15X) are supplied with U-shaped steel mounting brackets.
No more searching for 3rd party compatible wall mount hardware.
The bracket comes in the box!

SPECIFICATIONS
Model Name | SI-10X | SI-12X | SI-15X | SI-28X – Discontinued | SI-12BX – Discontinued | SI-15BX – Discontinued | SI-18BX |
---|---|---|---|---|---|---|---|
System Type | Passive | Passive | Passive | Passive | Passive | Passive | Passive |
Configuration | Two-way | Two-way | Two-way | Two-way | Subwoofer | Subwoofer | Subwoofer |
Freq Response (+/-3 dB) | 60 Hz – 20 KHz | 60 Hz – 20 KHz | 50 Hz – 20 KHz | 60 Hz – 20 KHz | 40 Hz – 250 Hz | 38 Hz – 220 Hz | 35 Hz – 200 KHz |
Freq Range (-10 dB) | 55 Hz – 20 KHz | 55 Hz – 20 KHz | 45 Hz – 20 KHz | 55 Hz – 20 KHz | 35 Hz – 250 Hz | 35 Hz – 220 Hz | 30 Hz – 200 KHz |
Sensitivity (2.83 v / 1 m) | 93 dB | 96 dB | 97 dB | 91 dB | 101 dB | 105 dB | 99 dB |
Calculated Max SPL @1 m | 121 dB | 126 dB | 129 dB | 121 dB | 132 dB | 138 dB | 134 dB |
System Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω |
LF Transducer | |||||||
Size | 254 mm / 10″ | 304.9 mm / 12″ | 381 mm / 15″ | 2 x 203.2 mm / 8″ | 304.8 mm / 12” | 381 mm / 15″ | 470 mm / 18″ |
Voice coil Size | 38.9 mm / 1.5″ | 64.3 mm / 2.5″ | 77.1 mm / 3.0″ | 51.6 mm / 2.0″ | 102 mm / 4” | 102 mm / 4” | 102 mm / 4” |
Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω | 8 Ω or 4 Ω |
LF Power (re:AES2-2012) | |||||||
HF Transducer | |||||||
HF Driver Type | Compression Driver | Compression Driver | Compression Driver | Compression Driver | |||
Voice coil Size | 44 mm / 1.75″ | 44 mm / 1.75″ | 44 mm / 1.75″ | 44 mm / 1.75″ | |||
Exit Size | 25 mm / 1″ | 25 mm / 1″ | 25 mm / 1″ | 25 mm / 1″ | |||
Diaphragm Material | Titanium | Titanium | Titanium | Titanium | |||
Rated Impedance | 8 Ω | 8 Ω | 8 Ω | 8 Ω | |||
HF (re:AES2-2012) | 40 W | 40 W | 40 W | 40 W | |||
Nominal Coverage | 70˚ x 70˚ | 70˚ x 70˚ | 70˚ x 70˚ | 70˚ x 70˚ | |||
Power | |||||||
Continuous Power | 200 W | 250 W | 400 W | 250 W | 300 W | 450 W | 800 W |
Programme Power | 400 W | 500 W | 800 W | 500 W | 600 W | 900 W | 1600 W |
Peak Power | 800 W | 1000 W | 1600 W | 1000 W | 1200 W | 1800 W | 3200 W |
Crossover frequency | 2.5 KHz | 2.4 KHz | 2.5 KHz | 2.6 KHz | |||
Input Connector | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip | 2 x NL4 + Barrier Strip |
Hardware | |||||||
Rigging | 20 x M8 Points + Wall Bracket | 20 x M8 Points + Wall Bracket | 20 x M8 Points + Wall Bracket | 20 x M8 Points + Wall Bracket | |||
Pole Mount | No | No | No | No | No | No | No |
Enclosure | |||||||
Enclosure Material | MDF | MDF | MDF | MDF | MDF | MDF | MDF |
Finish | Black or White | Black or White | Black or White | Black or White | Black or White | Black or White | Black or White |
Grille Material & Finish | 1.2 mm Steel | 1.2 mm Steel | 1.2 mm Steel | 1.2 mm Steel | 1.2 mm Steel | 1.2 mm Steel | 1.2 mm Steel |
Dimensions – Unpacked | |||||||
Height | 512 mm / 20.2″ | 562 mm / 22.1″ | 640 mm / 25.2″ | 675 mm / 26.6″ | 302 mm / 11.89″ | 266 mm / 10.47″ | 620 mm / 24.42″ |
Width Front | 294 mm / 11.58″ | 344 mm / 13.54″ | 422 mm / 16.61″ | 250 mm / 9.84″ | 650 mm / 25.59″ | 850 mm / 33.46″ | 537 mm / 21.14″ |
Width Rear | 294 mm / 11.58″ | 344 mm / 13.54″ | 422 mm / 16.61″ | 250 mm / 9.84″ | 650 mm / 25.59″ | 850 mm / 33.46″ | 537 mm / 21.14″ |
Depth | 310 mm / 12.2″ | 333 mm / 13.1″ | 396 mm / 15.6″ | 300 mm / 11.9″ | 545 mm / 21.46″ | 670 mm / 26.38″ | 508 mm / 20.0″ |
Dimensions – Packed | |||||||
Height | 580 mm / 22.83″ | 630 mm / 24.8″ | 705 mm / 27.76″ | 740 mm / 29.13” | 365 mm / 14.37″ | 329 mm / 12.95″ | 685 mm / 26.97″ |
Width Front | 348 mm / 13.7″ | 408 mm / 16.06″ | 482 mm / 18.98″ | 313 mm / 12.32″ | 715 mm / 28.15″ | 913 mm / 35.94″ | 600 mm / 23.62″ |
Width Rear | 348 mm / 13.7″ | 408 mm / 16.06″ | 482 mm / 18.98″ | 313 mm / 12.32″ | 715 mm / 28.15″ | 913 mm / 35.94″ | 600 mm / 23.62″ |
Depth | 358 mm / 14.09″ | 371 mm / 14.6″ | 433 mm / 17.04″ | 338 mm / 13.3″ | 605 mm / 23.82″ | 733 mm / 28.86″ | 575 mm / 22.64″ |
Weight | |||||||
Net Weight | 13.6 kg / 29.9 lbs | 16.7 kg / 36.7 lbs | 22 kg / 48.4 lbs | 17.8 kg / 39.2 lbs | 37.7 kg / 82.9 lbs | 44.6 kg / 98.1 lbs | 35.5 kg / 78.1 lbs |
Gross Weight | 17 kg / 37.4 lbs | 20 kg / 44 lbs | 25 kg / 55 lbs | 21 kg / 46.24 lbs | 44 kg / 96.8 lbs | 53 kg / 116.6 lbs | 44 kg / 96.8 lbs |
Downloads
SI-X Series Media Library
(external link to OneDrive library)