CS 3131
CS 3131

CS 3131

3 way tri-amplified screen channel speaker with bi-amp option

The CS 3131 is a high-performance 3-way screen channel speaker engineered for medium-format cinemas, delivering exceptional clarity, dynamics, and coverage. Configurable in both tri-amp and bi-amp modes, it features dual 15-inch woofers, a dedicated 10-inch midrange, and a high-output compression driver for powerful, natural sound reproduction. Time-aligned drivers, precision-engineered horn technology, and optimised crossover design ensure accurate imaging, outstanding dialogue intelligibility, and uniform audience coverage. Its compact, shallow-profile enclosure simplifies both in-wall and platform installations, while the cinema-optimised acoustic design delivers a flat frequency response and controlled directivity for an immersive movie experience.

  • 3 way design with bi-amp or triamp modes

  • Suits both in-wall and platform installations. Shallow profile relieves the need for a large installation space behind the cinema screen

  • Time-aligned compression and midrange drivers provide accurate imaging and minimum phase cancellations.

  • Tight directivity control and angled construction of midrange horn provides uniform coverage.

  • Sturdy, compact cabinet with shallow profile

  • Specially configured midrange phase plugs result in minimum phase cancellations resulting in intelligibility of vocals.

  • The mathematically-designed horn flare keesp distortion within limits.

  • Dual 15” LF enclosure available in different power ratings for different hall sizes.

  • All 3 sections – LF, MF and HF are optimized to provide flat frequency response inside a cinema hall (considering the influence of hall acoustics).

  • Controlled directivity with provision to tilt to the horn

DESCRIPTION
3 way tri-amplified screen channel speaker with bi-amp option
ENCLOSURE
LF: Baffle - Highly braced PPB M+HF: Injection moulded industrial grade plastic
TRANSDUCER COMPLEMENTS
LF: 2 x 15" woofer, 3" VC MH: 1 x 10", 3" VC HF: 1 x 1.4" throat compression driver, 2.5" VC
NOMINAL IMPEDANCE
TRIAMP MODE: LF: 4Ω, MF: 8Ω, HF: 8Ω BIAMP MODE: LF: 4Ω, MF + HF: 8Ω: 8Ω
POWER HANDLING
CONTINUOUS: LF: 800W; MF: 400W, HF: 110W, MF +HF: 500W PROGRAM: LF: 1600W; MF: 800W, HF: 220W, MF +HF: 1000W PEAK: LF: 3200W; MF: 1600W, HF: 440W, MF +HF: 2000W
SENSITIVITY (1W 1M)
LF: 101dB; MF:105dB; HF:110dB, MF +HF: 103dB
SPL
MAX CONTINUOUS: LF: 130dB; MF:133dB; HF:134dB, MF +HF: 130dB MAX PEAK: LF: 136dB; MF:139dB; HF:140dB, MF +HF:136dB
FREQUENCY RANGE
40Hz ~ 18kHz (-3dB) 30Hz ~ 20kHz (-10dB)
NOMINAL COVERAGE HxV
90° x -30°/+20°
CROSSOVER FREQUENCY
LF + MF - 200Hz MF + HF - 1.2kHz (recommended)
RECOMMENDED SUBSONIC FILTER
1.2kHz (bi-amp)
INPUT
Screw type barrier strip. Provision to defeat passive crossover and gain access to HF and MF speaker terminals
FINISH
LF - Black PVC, HF - Black, Brackets - black powder coated
DIMENSIONS (WxHxD)
LF: 760mm x 883mm x 450mm M + HF: 760mm x 987mm x 477mm
NET WEIGHT
LF: 55kg M + HF: 30kg
MOUNTING
Provided, for mounting on top of LF cabinet

NOTE: Due to continuous improvements, all specifications are subject to change

Find YourPerfect Match

CS 3131

CS 3131

RECOMMENDED SUBSONIC FILTER

1.2kHz (bi-amp)

POWER HANDLING

CONTINUOUS: LF: 800W; MF: 400W, HF: 110W, MF +HF: 500W PROGRAM: LF: 1600W; MF: 800W, HF: 220W, MF +HF: 1000W PEAK: LF: 3200W; MF: 1600W, HF: 440W, MF +HF: 2000W

DESCRIPTION

3 way tri-amplified screen channel speaker with bi-amp option

TRANSDUCER COMPLEMENTS

LF: 2 x 15" woofer, 3" VC MH: 1 x 10", 3" VC HF: 1 x 1.4" throat compression driver, 2.5" VC

FREQUENCY RANGE

40Hz ~ 18kHz (-3dB) 30Hz ~ 20kHz (-10dB)

DIMENSIONS (WxHxD)

LF: 760mm x 883mm x 450mm M + HF: 760mm x 987mm x 477mm

NET WEIGHT

LF: 55kg M + HF: 30kg

SPL

MAX CONTINUOUS: LF: 130dB; MF:133dB; HF:134dB, MF +HF: 130dB MAX PEAK: LF: 136dB; MF:139dB; HF:140dB, MF +HF:136dB

CS 3132

CS 3132

RECOMMENDED SUBSONIC FILTER

1.2kHz (bi-amp)

POWER HANDLING

CONTINUOUS: LF: 1200W; MF: 400W, HF: 110W, MF +HF: 500W PROGRAM: LF: 2400W; MF: 800W, HF: 220W, MF +HF: 1000W PEAK: LF: 4800W; MF: 1600W, HF: 440W, MF +HF: 2000W

DESCRIPTION

3 way tri-amplified screen channel speaker with bi-amp option

TRANSDUCER COMPLEMENTS

LF: 2 x 15" woofer, 3" VC MH: 1 x 10", 3" VC HF: 1 x 1.4" throat compression driver, 2.5" VC

FREQUENCY RANGE

40Hz ~ 18kHz (-3dB) 30Hz ~ 20kHz (-10dB)

DIMENSIONS (WxHxD)

LF: 760mm x 883mm x 450mm M + HF: 760mm x 987mm x 477mm

NET WEIGHT

LF: 61kg M + HF: 30kg

SPL

MAX CONTINUOUS: LF: 132dB; MF:133dB; HF:134dB, MF +HF: 130dB MAX PEAK: LF: 138dB; MF:139dB; HF:140dB, MF +HF:136dB

Reviews

For audiophiles, Sonodyne has been a legendary Make in India brand, & the Bandish offers 120W of pure grade sound!

★ ★ ★ ★ ★5/5

Akash Banerjee (DeshBhakt)

Sonodyne is an Indian brand many of us (and some of our parents) grew up with, and my earliest memories of the brand date back to the late '80s/ early '90s, when I used to regularly visit an uncle in Kolkata who was a big fan of the brand and its single-minded focus on recreating music "as the artist intended". Fast forward to 2024, and while the brand continues to serve the serious audiophile and pro-studio markets, it's their Bluetooth wireless speaker range that caught my eye, specifically the most powerful in their range, the aptly named Malhar (after the raga , Malhar which, as the myth goes, has the power to induce thunder and rain). Not one for slimline aesthetics, the Malhar resembles a cajón (or a clapbox as many may know it), an immediate throwback to when audio equipment was engineered for producing clean sound, first and foremost. With its wooden cabinet, classic aesthetics and all, the 8-kilogram Malhar is pleasing on the eye, but it demands pride of place — it's not one to disappear into the décor. Around the front are two 5" glass-fiber cone drivers accompanied by two 1" tweeters, and the sides have two 5" passive radiators. Inputs are all clustered towards the rear, with optical, aux, USB ports along with a handy 5V DC USB port to charge a phone while it's connected to the speaker. Controls to switch between these inputs and change tracks/volume are all on the top and are mirrored on the supplied remote. No buttons to fiddle around with bass/treble settings (intentionally so to retain the original feel of the track), and I would have preferred the indicator LEDs to be more visible, so you know the speaker is on or which input is selected. No app or Wi-Fi connectivity, which one starts expecting at this price point. Any reservations you may have had subside the moment you start playing music on the Malhar. Irrespective of genre, the speaker stands up and delivers, with a balanced sonic signature that accurately renders the highs, mids and lows without colouring the audio, so to speak. Streaming tracks as varied as Simon and Garfunkel to the Beach Boys to some of AR Rahman's classics, Malhar reproduces the tracks damn near flawlessly across its wide 40Hz – 20kHz frequency range. Throw in some punchier tracks and bump up the volume, and you really have to wake up the neighbours before the speaker starts showing the slightest hint of distortion at the top end. Worth noting as well is the expansive soundstage and the open quality to the playback. At its price, Malhar is likely to appeal to audio purists, and despite its name, this truly is a speaker for all seasons. The 'Made in India since 1970' is bonus appeal. Rating: 8/10 Price: INR 37,500

★ ★ ★ ★ ★0/5

Sonic superiority

Since its inception in the early 70s, Sonodyne is a company that has been at the forefront of the innovative Indian professional audio market

★ ★ ★ ★ ★0/5

MONDO DR

For audiophiles, Sonodyne has been a legendary Make in India brand, & the Bandish offers 120W of pure grade sound!

★ ★ ★ ★ ★5/5

Akash Banerjee (DeshBhakt)

Sonodyne is an Indian brand many of us (and some of our parents) grew up with, and my earliest memories of the brand date back to the late '80s/ early '90s, when I used to regularly visit an uncle in Kolkata who was a big fan of the brand and its single-minded focus on recreating music "as the artist intended". Fast forward to 2024, and while the brand continues to serve the serious audiophile and pro-studio markets, it's their Bluetooth wireless speaker range that caught my eye, specifically the most powerful in their range, the aptly named Malhar (after the raga , Malhar which, as the myth goes, has the power to induce thunder and rain). Not one for slimline aesthetics, the Malhar resembles a cajón (or a clapbox as many may know it), an immediate throwback to when audio equipment was engineered for producing clean sound, first and foremost. With its wooden cabinet, classic aesthetics and all, the 8-kilogram Malhar is pleasing on the eye, but it demands pride of place — it's not one to disappear into the décor. Around the front are two 5" glass-fiber cone drivers accompanied by two 1" tweeters, and the sides have two 5" passive radiators. Inputs are all clustered towards the rear, with optical, aux, USB ports along with a handy 5V DC USB port to charge a phone while it's connected to the speaker. Controls to switch between these inputs and change tracks/volume are all on the top and are mirrored on the supplied remote. No buttons to fiddle around with bass/treble settings (intentionally so to retain the original feel of the track), and I would have preferred the indicator LEDs to be more visible, so you know the speaker is on or which input is selected. No app or Wi-Fi connectivity, which one starts expecting at this price point. Any reservations you may have had subside the moment you start playing music on the Malhar. Irrespective of genre, the speaker stands up and delivers, with a balanced sonic signature that accurately renders the highs, mids and lows without colouring the audio, so to speak. Streaming tracks as varied as Simon and Garfunkel to the Beach Boys to some of AR Rahman's classics, Malhar reproduces the tracks damn near flawlessly across its wide 40Hz – 20kHz frequency range. Throw in some punchier tracks and bump up the volume, and you really have to wake up the neighbours before the speaker starts showing the slightest hint of distortion at the top end. Worth noting as well is the expansive soundstage and the open quality to the playback. At its price, Malhar is likely to appeal to audio purists, and despite its name, this truly is a speaker for all seasons. The 'Made in India since 1970' is bonus appeal. Rating: 8/10 Price: INR 37,500

★ ★ ★ ★ ★0/5

Sonic superiority

Since its inception in the early 70s, Sonodyne is a company that has been at the forefront of the innovative Indian professional audio market

★ ★ ★ ★ ★0/5

MONDO DR

For audiophiles, Sonodyne has been a legendary Make in India brand, & the Bandish offers 120W of pure grade sound!

★ ★ ★ ★ ★5/5

Akash Banerjee (DeshBhakt)

Sonodyne is an Indian brand many of us (and some of our parents) grew up with, and my earliest memories of the brand date back to the late '80s/ early '90s, when I used to regularly visit an uncle in Kolkata who was a big fan of the brand and its single-minded focus on recreating music "as the artist intended". Fast forward to 2024, and while the brand continues to serve the serious audiophile and pro-studio markets, it's their Bluetooth wireless speaker range that caught my eye, specifically the most powerful in their range, the aptly named Malhar (after the raga , Malhar which, as the myth goes, has the power to induce thunder and rain). Not one for slimline aesthetics, the Malhar resembles a cajón (or a clapbox as many may know it), an immediate throwback to when audio equipment was engineered for producing clean sound, first and foremost. With its wooden cabinet, classic aesthetics and all, the 8-kilogram Malhar is pleasing on the eye, but it demands pride of place — it's not one to disappear into the décor. Around the front are two 5" glass-fiber cone drivers accompanied by two 1" tweeters, and the sides have two 5" passive radiators. Inputs are all clustered towards the rear, with optical, aux, USB ports along with a handy 5V DC USB port to charge a phone while it's connected to the speaker. Controls to switch between these inputs and change tracks/volume are all on the top and are mirrored on the supplied remote. No buttons to fiddle around with bass/treble settings (intentionally so to retain the original feel of the track), and I would have preferred the indicator LEDs to be more visible, so you know the speaker is on or which input is selected. No app or Wi-Fi connectivity, which one starts expecting at this price point. Any reservations you may have had subside the moment you start playing music on the Malhar. Irrespective of genre, the speaker stands up and delivers, with a balanced sonic signature that accurately renders the highs, mids and lows without colouring the audio, so to speak. Streaming tracks as varied as Simon and Garfunkel to the Beach Boys to some of AR Rahman's classics, Malhar reproduces the tracks damn near flawlessly across its wide 40Hz – 20kHz frequency range. Throw in some punchier tracks and bump up the volume, and you really have to wake up the neighbours before the speaker starts showing the slightest hint of distortion at the top end. Worth noting as well is the expansive soundstage and the open quality to the playback. At its price, Malhar is likely to appeal to audio purists, and despite its name, this truly is a speaker for all seasons. The 'Made in India since 1970' is bonus appeal. Rating: 8/10 Price: INR 37,500

★ ★ ★ ★ ★0/5

Sonic superiority

Since its inception in the early 70s, Sonodyne is a company that has been at the forefront of the innovative Indian professional audio market

★ ★ ★ ★ ★0/5

MONDO DR

For audiophiles, Sonodyne has been a legendary Make in India brand, & the Bandish offers 120W of pure grade sound!

★ ★ ★ ★ ★5/5

Akash Banerjee (DeshBhakt)

Sonodyne is an Indian brand many of us (and some of our parents) grew up with, and my earliest memories of the brand date back to the late '80s/ early '90s, when I used to regularly visit an uncle in Kolkata who was a big fan of the brand and its single-minded focus on recreating music "as the artist intended". Fast forward to 2024, and while the brand continues to serve the serious audiophile and pro-studio markets, it's their Bluetooth wireless speaker range that caught my eye, specifically the most powerful in their range, the aptly named Malhar (after the raga , Malhar which, as the myth goes, has the power to induce thunder and rain). Not one for slimline aesthetics, the Malhar resembles a cajón (or a clapbox as many may know it), an immediate throwback to when audio equipment was engineered for producing clean sound, first and foremost. With its wooden cabinet, classic aesthetics and all, the 8-kilogram Malhar is pleasing on the eye, but it demands pride of place — it's not one to disappear into the décor. Around the front are two 5" glass-fiber cone drivers accompanied by two 1" tweeters, and the sides have two 5" passive radiators. Inputs are all clustered towards the rear, with optical, aux, USB ports along with a handy 5V DC USB port to charge a phone while it's connected to the speaker. Controls to switch between these inputs and change tracks/volume are all on the top and are mirrored on the supplied remote. No buttons to fiddle around with bass/treble settings (intentionally so to retain the original feel of the track), and I would have preferred the indicator LEDs to be more visible, so you know the speaker is on or which input is selected. No app or Wi-Fi connectivity, which one starts expecting at this price point. Any reservations you may have had subside the moment you start playing music on the Malhar. Irrespective of genre, the speaker stands up and delivers, with a balanced sonic signature that accurately renders the highs, mids and lows without colouring the audio, so to speak. Streaming tracks as varied as Simon and Garfunkel to the Beach Boys to some of AR Rahman's classics, Malhar reproduces the tracks damn near flawlessly across its wide 40Hz – 20kHz frequency range. Throw in some punchier tracks and bump up the volume, and you really have to wake up the neighbours before the speaker starts showing the slightest hint of distortion at the top end. Worth noting as well is the expansive soundstage and the open quality to the playback. At its price, Malhar is likely to appeal to audio purists, and despite its name, this truly is a speaker for all seasons. The 'Made in India since 1970' is bonus appeal. Rating: 8/10 Price: INR 37,500

★ ★ ★ ★ ★0/5

Sonic superiority

Since its inception in the early 70s, Sonodyne is a company that has been at the forefront of the innovative Indian professional audio market

★ ★ ★ ★ ★0/5

MONDO DR

For audiophiles, Sonodyne has been a legendary Make in India brand, & the Bandish offers 120W of pure grade sound!

★ ★ ★ ★ ★5/5

Akash Banerjee (DeshBhakt)

Sonodyne is an Indian brand many of us (and some of our parents) grew up with, and my earliest memories of the brand date back to the late '80s/ early '90s, when I used to regularly visit an uncle in Kolkata who was a big fan of the brand and its single-minded focus on recreating music "as the artist intended". Fast forward to 2024, and while the brand continues to serve the serious audiophile and pro-studio markets, it's their Bluetooth wireless speaker range that caught my eye, specifically the most powerful in their range, the aptly named Malhar (after the raga , Malhar which, as the myth goes, has the power to induce thunder and rain). Not one for slimline aesthetics, the Malhar resembles a cajón (or a clapbox as many may know it), an immediate throwback to when audio equipment was engineered for producing clean sound, first and foremost. With its wooden cabinet, classic aesthetics and all, the 8-kilogram Malhar is pleasing on the eye, but it demands pride of place — it's not one to disappear into the décor. Around the front are two 5" glass-fiber cone drivers accompanied by two 1" tweeters, and the sides have two 5" passive radiators. Inputs are all clustered towards the rear, with optical, aux, USB ports along with a handy 5V DC USB port to charge a phone while it's connected to the speaker. Controls to switch between these inputs and change tracks/volume are all on the top and are mirrored on the supplied remote. No buttons to fiddle around with bass/treble settings (intentionally so to retain the original feel of the track), and I would have preferred the indicator LEDs to be more visible, so you know the speaker is on or which input is selected. No app or Wi-Fi connectivity, which one starts expecting at this price point. Any reservations you may have had subside the moment you start playing music on the Malhar. Irrespective of genre, the speaker stands up and delivers, with a balanced sonic signature that accurately renders the highs, mids and lows without colouring the audio, so to speak. Streaming tracks as varied as Simon and Garfunkel to the Beach Boys to some of AR Rahman's classics, Malhar reproduces the tracks damn near flawlessly across its wide 40Hz – 20kHz frequency range. Throw in some punchier tracks and bump up the volume, and you really have to wake up the neighbours before the speaker starts showing the slightest hint of distortion at the top end. Worth noting as well is the expansive soundstage and the open quality to the playback. At its price, Malhar is likely to appeal to audio purists, and despite its name, this truly is a speaker for all seasons. The 'Made in India since 1970' is bonus appeal. Rating: 8/10 Price: INR 37,500

★ ★ ★ ★ ★0/5

Sonic superiority

Since its inception in the early 70s, Sonodyne is a company that has been at the forefront of the innovative Indian professional audio market

★ ★ ★ ★ ★0/5

MONDO DR

Studio microphones in blue light

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