







SONODYNE SLX 1252
PRICE ON ENQUIRY
SONODYNE SLX 1252 three way passive PA speaker: dual 15 inch LF, horn loaded compression driver, 90° x 50°, 132 dB SPL. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
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Acoustic
| Description | Passive 3 way, dual 15 inch, bass‑reflex |
| Transducer complement | HF: 1 inch HLCD with 2 inch voice coil; LF: 2 x 15 inch with 3 inch voice coil |
| Nominal impedance | 4 Ω |
| Frequency range | 35 Hz - 20 kHz (-10 dB) |
| Directivity (H x V) | 90° x 50° (HF) |
| Sensitivity (1 W, 1 m) | 100 dB |
| Maximum SPL | Continuous 132 dB; peak 138 dB |
| Power handling | Continuous 1500 W; peak 6000 W |
Mechanical
| Enclosure type | 15 mm plywood, trapezoidal |
| Connectors | 1 x twist‑lock connector (input); 1 x twist‑lock connector (link) |
| Mounting options | Stackable |
| Finish | Durable paint |
| Colour | Black |
| Dimensions (W x H x D) | 560 x 1416 x 517 mm |
| Net weight | 68 kg |
| Warranty | 2 years |
Product overview
The SONODYNE SLX 1252 is a three way passive speaker of the SLX Series with dual 15 inch LF and a horn loaded compression driver, in a braced plywood trapezoidal cabinet.
Designed for portable and fixed install PA, the SLX 1252 combines two high excursion 15 inch LF transducers with a 1 inch horn loaded compression driver with a 2 inch voice coil in a custom waveguide for constant directivity of 90° x 50°. It handles 1500 W continuous and 6000 W peak power at a nominal 4 Ω, reaches a maximum SPL of 132 dB continuous and 138 dB peak with 100 dB sensitivity and covers 35 Hz - 20 kHz (-10 dB). The bass-reflex cabinet of 15 mm plywood is trapezoidal and stackable.
| Continuous max SPL (138 dB peak) | 132 dB |
| Continuous power handling | 1500 W |
| Frequency range (-10 dB) | 35 Hz - 20 kHz |
| Sensitivity (1 W, 1 m) | 100 dB |
Key features
- Portable and fixed install PA speaker
- High power handling and SPL: 1500 W continuous; 132 dB continuous, 138 dB peak
- Constant directivity HF with custom waveguide: 90° x 50°
- Rigid painted cabinet of 15 mm plywood with heavy internal bracing
- High excursion LF transducers: 2 x 15 inch with 3 inch voice coils
- Stackable trapezoidal enclosure; twist-lock input and link
Compression driver and dual 15 inch LF
SONODYNE describes the SLX 1252 as a passive 3 way, dual 15 inch, bass-reflex speaker. Its HF is a 1 inch horn loaded compression driver with a 2 inch voice coil, in a waveguide that SONODYNE designed for smooth, predictable coverage, 90° horizontally and 50° vertically; two high excursion 15 inch LF transducers with 3 inch voice coils take it down to 35 Hz (-10 dB).
Trapezoidal cabinet in braced plywood
The enclosure is trapezoidal, made from 15 mm plywood with heavy internal bracing, and its mounting option is stackable. SONODYNE finishes the SLX cabinets in multiple coats of durable stipple paint, with a powder coated perforated grille for optimal transducer protection. The SLX 1252 is black and measures 560 x 1416 x 517 mm (W x H x D) at 68 kg.
Connections
The SLX 1252 is passive and is driven from an external power amplifier through its twist-lock input; a twist-lock link connector passes the signal on to a further cabinet. Nominal impedance is 4 Ω.
The SLX Series
The SLX Series is a range of engineered professional loudspeakers for balanced sound and high SPL in both indoor and outdoor applications, comprising full range speakers and subwoofers. Roadworthy and great sounding, the SLX range meets the sound needs for live and recorded performances.
In the box
- SLX 1252 passive speaker
SONODYNE SLX 1252: frequently asked questions
Is the SLX 1252 active or passive?
Passive. It has no built-in amplifier and is driven from an external power amplifier into a nominal impedance of 4 Ω.
How much power does it handle?
Continuous 1500 W; peak 6000 W.
How is it mounted?
SONODYNE lists one mounting option for this model: stackable.
What is its coverage?
The horn loaded compression driver in its custom waveguide gives constant directivity of 90° x 50° (H x V).
Where can I buy the SONODYNE SLX 1252 in India?
The SONODYNE SLX 1252 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Main PA for live music
Bands and event crews on large stages.
Connections
| Connect | To |
|---|---|
| Power amplifier output (4 Ω) | Twist‑lock INPUT |
Setup
- Stand an SLX 1252 on each side of the stage.
- Connect each speaker to its own amplifier channel.
- Aim the 90° x 50° coverage at the audience.
Tip: 132 dB continuous and 138 dB peak maximum SPL.
Workflow 2: Full SLX system with subwoofers
Users combining SLX full range speakers and subwoofers.
Connections
| Connect | To |
|---|---|
| Processor high output to amplifier | SLX 1252 twist‑lock INPUT |
| Processor low output to amplifier | SLX subwoofers |
Setup
- Split the signal between the SLX 1252 and the subwoofers in a system processor.
- Connect each amplifier channel.
- Balance the levels for the venue.
Tip: The SLX range comprises full range speakers and subwoofers.
Workflow 3: Stacked cabinets
Venues that stack full range cabinets.
Connections
| Connect | To |
|---|---|
| Power amplifier output | Twist‑lock INPUT |
Setup
- Stack the cabinets as the venue requires.
- Connect the amplifier through the twist-lock input.
- Check the coverage at the listening area.
Tip: SONODYNE lists the mounting option as stackable.
Workflow 4: Outdoor events
Crews running open-air concerts and functions.
Connections
| Connect | To |
|---|---|
| Power amplifier output | Twist‑lock INPUT |
Setup
- Place the SLX 1252 at the front of the stage.
- Run the speaker cable to the twist-lock input.
- Set the amplifier level for the area.
Tip: The SLX Series is designed for indoor and outdoor applications.
Workflow 5: Fixed installation in halls
Auditoriums, halls and clubs.
Connections
| Connect | To |
|---|---|
| System processor and power amplifier | Twist‑lock INPUT |
Setup
- Position the cabinets for the room.
- Connect the amplifiers through the twist-lock inputs.
- Set the system processor for the room.
Tip: Portable and fixed install PA speakers (SONODYNE).
Workflow 6: Two cabinets from one feed
Systems that link a second cabinet.
Connections
| Connect | To |
|---|---|
| Power amplifier output | Twist‑lock INPUT of the first SLX 1252 |
| Twist‑lock LINK | INPUT of the second cabinet |
Setup
- Connect the amplifier to the first speaker.
- Link the second speaker from the twist-lock link connector.
- Check that the amplifier channel is rated for the combined load.
Tip: Each SLX 1252 has a nominal impedance of 4 Ω.








