




SONODYNE SLX 2050
PRICE ON ENQUIRY
SONODYNE SLX 2050 passive 15 inch PA subwoofer: 400 W continuous, 131 dB peak SPL, braced plywood cabinet, twist-lock. Available in India from Shivansh Electronics, Kolkata, West Bengal, India.
VISUAL GUIDE — See Every Photo, Spec & Setup Step (PDF)
PRICE ON ENQUIRY. For the price, exclusive offers, delivery timelines, or any other information, please DM us or call +91 89818 07755 / +91 91477 00677. We will gladly share a personalised quotation for Shivansh Electronics, Kolkata, West Bengal, India. All payments are processed securely through Razorpay, our trusted payment gateway partner.
Acoustic
| Description | Passive 15 inch subwoofer |
| Transducer complement | LF: 15 inch with 3 inch voice coil |
| Nominal impedance | 8 Ω |
| Frequency range | 45 Hz - crossover frequency (-10 dB) |
| Crossover frequency | Recommended 80 Hz - 120 Hz, 18 - 12 dB/octave low‑pass |
| Recommended subsonic filter | 35 Hz, 24 dB/octave |
| Sensitivity (1 W, 1 m) | 99 dB |
| Maximum SPL | Continuous 125 dB; peak 131 dB |
| Power handling | Continuous 400 W; program 800 W; peak 1600 W |
Mechanical
| Enclosure type | 18 mm plywood |
| Connectors | 1 x twist‑lock connector (input); 1 x twist‑lock connector (link) |
| Finish | Durable paint |
| Colour | Black |
| Dimensions (W x H x D) | 460 x 590 x 520 mm |
| Net weight | 30 kg |
| Warranty | 2 years |
Product overview
The SONODYNE SLX 2050 is a passive 15 inch subwoofer of the SLX Series, with a high excursion 15 inch LF transducer in a rigid, heavily braced 18 mm plywood cabinet.
Built for portable and fixed install PA, the SLX 2050 handles 400 W continuous, 800 W program and 1600 W peak power and reaches a maximum SPL of 125 dB continuous and 131 dB peak. Its 15 inch LF transducer with a 3 inch voice coil extends the frequency range down to 45 Hz (-10 dB), with a sensitivity of 99 dB (1 W, 1 m) into a nominal 8 Ω. Twist-lock connectors carry the input and a link to further cabinets, and the black cabinet is finished in durable paint.
| Peak SPL (125 dB continuous) | 131 dB |
| Continuous power handling | 400 W |
| LF with 3 inch voice coil | 15 inch |
| Lower limit (-10 dB) | 45 Hz |
Key features
- Portable and fixed install PA subwoofer
- High power handling: 400 W continuous, 800 W program, 1600 W peak
- High SPL: 125 dB continuous, 131 dB peak
- High excursion LF transducer: 15 inch with 3 inch voice coil
- Rigid painted cabinet of 18 mm plywood with heavy internal bracing
- Twist-lock input and link connectors; nominal impedance 8 Ω
High excursion 15 inch LF
The 15 inch LF transducer with its 3 inch voice coil is a high excursion design. SONODYNE customises the SLX transducers to meet the frequency, SPL and high power handling needs of the series; on the SLX 2050 the range reaches down to 45 Hz (-10 dB).
Rigid, braced plywood cabinet
The enclosure is made from 18 mm plywood with heavy internal bracing and measures 460 x 590 x 520 mm (W x H x D). SONODYNE finishes the SLX enclosures in multiple coats of durable stipple paint, and a powder coated perforated grille provides optimal transducer protection: roadworthy and great sounding.
System set-up
The SLX 2050 is passive and is driven from an external power amplifier through its twist-lock input; the twist-lock link connector passes the signal on to a further cabinet. SONODYNE recommends a crossover at 80 Hz - 120 Hz with an 18 - 12 dB/octave low-pass slope and a subsonic filter at 35 Hz, 24 dB/octave. A caution label on the rear reads: for performance and protection, use with SONODYNE SLX SC1 controller only.
In the box
- SLX 2050 passive subwoofer
SONODYNE SLX 2050: frequently asked questions
Is the SLX 2050 active or passive?
Passive. It has no built-in amplifier and is driven from an external power amplifier into a nominal impedance of 8 Ω.
Which crossover and subsonic filter settings does SONODYNE recommend?
A low-pass crossover at 80 Hz - 120 Hz with an 18 - 12 dB/octave slope, and a subsonic filter at 35 Hz, 24 dB/octave.
How do I connect the SLX 2050?
Through the twist-lock input connector; a second twist-lock connector links the signal on to a further cabinet.
What are its size and weight?
460 x 590 x 520 mm (W x H x D) and 30 kg net.
Where can I buy the SONODYNE SLX 2050 in India?
The SONODYNE SLX 2050 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.
Workflow 1: Live band PA
Sound engineers adding low end to a live PA.
Connections
| Connect | To |
|---|---|
| Power amplifier output (8 Ω) | Twist‑lock INPUT |
Setup
- Place the SLX 2050 at the front of the stage.
- Connect a power amplifier channel to the twist-lock input.
- Low-pass the subwoofer feed at 80 Hz - 120 Hz.
- Apply the 35 Hz, 24 dB/octave subsonic filter.
Tip: 125 dB continuous and 131 dB peak maximum SPL.
Workflow 2: Fixed install sound system
Installers of permanent PA in halls and venues.
Connections
| Connect | To |
|---|---|
| System processor and power amplifier | Twist‑lock INPUT |
Setup
- Position the subwoofer in the venue.
- Connect the amplifier to the twist-lock input.
- Set the recommended crossover and subsonic filter in the system processor.
Tip: Rigid painted cabinet with heavy internal bracing.
Workflow 3: Two subwoofers from one feed
Systems that need more low-frequency output.
Connections
| Connect | To |
|---|---|
| Power amplifier output | Twist‑lock INPUT of the first SLX 2050 |
| Twist‑lock LINK | INPUT of the second cabinet |
Setup
- Connect the amplifier to the first subwoofer.
- Link the second cabinet from the twist-lock link connector.
Tip: Each SLX 2050 has a nominal impedance of 8 Ω.
Workflow 4: Outdoor events
Event companies working outdoors.
Connections
| Connect | To |
|---|---|
| Power amplifier output | Twist‑lock INPUT |
Setup
- Place the subwoofers for the event.
- Connect the amplifier through twist-lock cables.
- Set the crossover and subsonic filter.
Tip: The SLX Series is designed for high SPL in indoor and outdoor applications.
Workflow 5: SLX Series full system
Users combining SLX full range speakers and subwoofers.
Connections
| Connect | To |
|---|---|
| Processor low output to amplifier | SLX 2050 twist‑lock INPUT |
| Processor high output to amplifier | SLX full range speakers |
Setup
- Split the signal at 80 Hz - 120 Hz.
- Feed the low band to the SLX 2050.
- Feed the high band to the full range cabinets.
Tip: The SLX range comprises full range speakers and subwoofers.
Workflow 6: Recorded performance playback
Venues playing back recorded music at high level.
Connections
| Connect | To |
|---|---|
| Playback mixer, processor and amplifier | Twist‑lock INPUT |
Setup
- Connect the amplifier to the subwoofer.
- Set the low-pass and subsonic filters.
- Set the level for the room.
Tip: Frequency range down to 45 Hz (-10 dB).








