Crestron Control Systems – SWAMP-24X8 Sonnex® Multiroom Audio System

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Crestron Control Systems – SWAMP-24X8 Sonnex® Multiroom Audio System

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  • User Controls – From a Crestron touch screen or other user interface, Sonnex provides the essential controls for day-to-day listening. Controls include room volume, bass, treble, balance, loudness, mute, zone on/off, and five selectable tone profiles. Through the control system program, many advanced user functions are possible including priority modes (who can control which sources), zone grouping (source sharing), paging, do-not-disturb, alarm clock, sleep timer, and much more.
  • Tone Profiles – With one touch, users can select from five preset EQ curves including Classical, Jazz, Pop, Rock, or Spoken Word, each tailored for a different type of material or listening preference.
  • Dynamic Range Control – When you listen to music or watch TV, you want to enjoy it at a volume level that lets you hear everything clearly – which can be difficult to do if there are competing background noises or someone resting in the next room. Not only that, but the level from one song to the next, and between TV programs and commercials, can fluctuate wildly. Sonnex provides user-selectable DRC to help keep everything at a consistent level, whether in a quiet bedroom, a loud swimming pool, or an outdoor patio, facilitating a more cohesive listening experience without disturbing the neighbors.
  • Sonnex Speaker Protect™ – When the occasion calls for cranking the volume[4], exclusive SSP® output limiting assures maximum headroom while preventing damage to the amplifier or speakers. More sophisticated than conventional limiting, SSP lets the installer set the protection to match the speakers' power handling capability, achieving a transparent effect right up to the limits of the speaker device.
  • 5-Band Equalizer – To tailor the sound of your speakers to the unique acoustical environment of each room or space, Sonnex provides the choice of graphic or parametric 5-band EQ. Using Sonnex Tools software and a wireless laptop, the installer can easily move from room to room, sculpting the sound for optimal audio clarity and impact.

“Sonnex® redefines what multiroom audio can be. Engineered by Crestron® — the pioneer in audio distribution control systems.”

Finally—a fully-scalable audio distribution system that delivers high-output audiophile sound quality to every room with significantly reduced cabling, low power consumption, advanced DSP, and integrator-friendly setup. The Sonnex®Multiroom Audio System takes audio distribution to a higher level, facilitating massive systems with up to 74 zones and over 30,000 Watts of power!

Employing a whole new system topology, Sonnex minimizes speaker wiring distances by allowing expansion units to be placed central to the rooms they serve. Twenty-four stereo channels of uncompressed digital audio and control are routed to each expander over a single inexpensive shielded CAT5e cable[1]. Gone is all the clutter of amplifier interconnects and input loop-thru cables, meticulously integrating 8 zones of high-performance power amplification and signal processing, plus input switching for a generous 24 analog and digital sources, all in one compact 4-space rack-mountable package.

Integrated Audiophile Amplifier

With Sonnex, you get more power to the speakers—without compromising the electric bill or hogging precious space in your equipment rack. The SWAMP-24X8 boasts a custom hybrid amplifier design that achieves the warmth and neutrality of a fine Class AB amplifier with all the efficiency benefits of modern Class D. Designed to appease the most demanding listener, Sonnex possesses the sonic integrity of a world-class stereo amplifier eight times over to deliver faithful, eminently satisfying audio reproduction in every room from all your music sources.

Each of its 16 channels (configured as 8 stereo zones) delivers an unprecedented 140 Watts into 8 Ohms, or 240 Watts into 4 Ohms. And, for those large, noisy areas around the pool or patio, or in a game room or gym, any two adjacent outputs can be bridged to produce a gratifying 400 Watts per channel at 8 Ohms. As impressive as that is, you’ll be equally pleased to know that Sonnex accomplishes its class-leading performance in a mere four rack spaces while maintaining highly effective cooling with no need for extra clearance above or below. Each zone is individually controllable, saving further energy by turning off any unused channels.

24×8 Matrix Switcher

Designed with flexibility and expansion in mind, the Sonnex Multiroom Audio System provides numerous inputs to manage all your stereo audio sources, both analog and digital.

  • A total of 24 discrete inputs are spread across an array of connectors, including unbalanced RCA, balanced terminal blocks, and SPDIF coaxial. Sonnex easily handles the multi-zone outputs from a TunerRack Modular Multi-Tuner (CEN-TRACK) or multiple Network Stream Players (CEN-NSP-1), plus all your digital television receivers and other devices.
  • Audio return channels are easily added using Crestron AUD-EXT Audio over CAT5 Extenders to receive signals from remote AV receivers located up to 2000 feet (610 m) away.

For ease of use, descriptive names for every source input and zone output can be displayed on the front panel LCD and pushbuttons. Via the front panel controls, or from a Crestron touch screen or remote, any input can be selected for listening in any zone or group. Additional features include mono summing for distribution to non-stereo zones, scaling factor settings for defining minimum and maximum volume levels, source signal detection, and source gain compensation to assure a consistent level when switching between disparate sources.

Bonus Zones

In addition to its eight amplified zone outputs, the SWAMP-24X8 provides two additional SPDIF digital outputs for sharing stereo sources with centralized audio processors and AV receivers.[2] These outputs can even be extended to feed remote AV receivers anywhere in the house using AUD-EXT Audio over CAT5 Extenders.

Sonnex Digital Audio Transport

Among the many exceptional features that set Sonnex apart from all other multiroom systems is the remarkable Sonnex Audio Transport. On the rear of the SWAMP-24X8 are eight Sonnex Link ports, enabling the connection of up to eight Sonnex Multiroom Audio Expanders (SWAMPE-4 or SWAMPE-8)[3]. Each link transports professional-quality 24-bit, 48 kHz digital audio from all 24 inputs simultaneously to each expander, supporting wiring distances up to 200 ft (61 m) over a single CAT5e shielded twisted-pair (STP) cable[1].

While the expanders can be installed centrally with the SWAMP-24X8, the ease of running just one tiny wire instead of 16 heavy speaker cables clearly affords a much better decentralized system approach. Installing each expander local to the rooms it serves, whether on a different floor, another wing, or a completely separate building, significantly reduces the amount of speaker wiring you’ll need to install. The benefits of reducing speaker wiring include faster, easier, and less expensive installation, as well as overall higher performance and efficiency by minimizing the signal loss inherent in long speaker runs.

Plug and Play Expansion

Control for each expander is also embedded in the Sonnex Link, dramatically simplifying installation and setup through a true one-wire interface. There’s no need to set addresses or write any special programming. Simply connect each expander to the SWAMP-24X8 and instantly control the complete system from the SWAMP-24X8’s front panel or Sonnex Tools software.

Advanced DSP

To truly deliver an ultimate listening experience in every room, Sonnex includes built-in digital signal processing providing a virtual arsenal of controls and adjustments, intelligently deployed to streamline both the installer setup procedure and day-to-day user operation. Key setup functions are accessible via the front panel, while more advanced settings are provided via Sonnex Tools software. Naturally, the essential user controls can be made available on any Crestron touch screen, keypad, handheld remote, or mobile device as part of a complete Crestron system.

Features 24×10 stereo matrix switcher, 8-channel stereo DSP, 8-channel stereo power amplifier, Sonnex® Digital Audio Transport, speaker profiles, Sonnex Speaker Protect™, 5-band graphic or parametric EQ, Dynamic Range Control (DRC), tone profiles, source gain compensation, amp bridging, output bussing, individual zone power control, global standby, source signal detection, amplifier temperature and fault monitoring, priority modes[6], paging[6],do-not-disturb[6], alarm clock and sleep timer[6]
Input Signal Types stereo analog line (unbalanced and balanced), S/PDIF coaxial (2-channel PCM only)
Output Signal Types Stereo speaker level, S/PDIF coaxial (2-channel PCM only), Sonnex Link
  • Typical of 24 stereo inputs:
Analog-To-Digital Conversion 24-bit 48 kHz
Source Compensation ±10.0 dB per input
Input Monitoring Source Signal Detect
  • Typical of up to 8 amplified stereo zone outputs:
Digital-To-Analog Conversion 24-bit 48 kHz
Output Power 140 Watts per channel at 8 Ohms;
240 Watts per channel at 4 Ohms;
400 Watts per channel at 8 Ohms bridged
Damping Factor >200 @ 20 Hz
Amplifier Monitoring Over Current, Over/Under Voltage, Over Temperature, DC Offset, Clipping
Frequency Response 20 Hz to 20 kHz ±0.5 dB
THD 0.02%
S/N Ratio >105dB SPDIF in, >100dB balanced or unbalanced analog in, A-weighted
Stereo Separation >90dB
Zone Separation >95dB
Zone Volume Level Control -80.0 to +20.0 dB, adjustable from 0% to 100% plus mute
Bass Control ±12.0 dB
Treble Control ±12.0 dB
Loudness Compensation On/Off
Dynamic Range Control On/Off
Balance Control Left/right adjustable
Mono Summing Selectable
Power Limiting Sonnex Speaker Protect (SSP®) output limiting; configurable 40 to 140 Watts @ 8 Ohms, 40 to 240 Watts @ 4 Ohms, 40 to 400 Watts @ 8 Ohms bridged
Tone Profiles Flat, Classical, Jazz, Pop, Rock, Spoken Word
EQ Modes 5-band graphic or 5-band parametric EQ
GEQ Center Frequencies 63, 250, 1k, 4k, 16k Hz
GEQ Gain ±12.0 dB per band
PEQ Filter Types EQ, High Pass, Low Pass, Treble Shelf, Bass Shelf, Notch
PEQ Center Frequency 10 to 20,000 Hz per band
PEQ Gain ±12.0 dB per band
PEQ Bandwidth 0.1 to 3.5 octaves per band
Speaker Profiles Comprises 5-band GEQ and SSP settings
Bus Volume Offset ±12.0 dB per zone for output bussing
  • Typical of 2 digital stereo zone outputs:
Resolution/Bitrate 24-bit 48 kHz
Ethernet For control and console, 10/100 Mbps, auto-switching, auto-negotiating, auto-discovery, full/half duplex, DHCP
Cresnet For control and console, Cresnet slave[3]
Sonnex Link 64-channel (48 utilized) digital audio w/embedded control, auto-discovery, auto-negotiating
ANALOG SOURCES L/R 1 – 16 (32) RCA female comprising (16) unbalanced stereo line-level audio inputs;
Input Impedance: 10k Ohms;
Maximum Input Level: 2 Vrms
ANALOG SOURCES BALANCED 13 – 16 (4) 5-pin 3.5mm detachable terminal blocks;
Balanced stereo line-level audio inputs (mutually exclusive of corresponding unbalanced inputs);
Input Impedance: 20k Ohms;
Maximum Input Level: 4 Vrms
DIGITAL OUT 1 – 8 (8) 8-wire RJ45 female;
Sonnex expansion link outputs;
Connect to Sonnex Multiroom Audio Expanders[1,3]
SPDIF SOURCES 17 – 24 (8) RCA female;
S/PDIF coaxial digital audio inputs;
Input Impedance: 75 Ohms
SPDIF OUT 9 – 10 (2) RCA female;
S/PDIF coaxial digital audio outputs;
Output Impedance: 75 Ohms
LAN (1) 8-wire RJ45 female;
10Base-T/100Base-TX Ethernet port
NET (2) 4-pin 3.5mm detachable terminal blocks;
Cresnet slave ports, paralleled[3]
FUSE (US/North America) Main fuse, T15AH;
(1/4″ x 1-1/4″, 250V, 15A, time-lag, high-rupture rated)
FUSE (International) Main fuse, T8AH;
(1/4″ x 1-1/4″, 250V, 8A, time-lag, high-rupture rated)
120V~50/60Hz MAX 12A (US/North America) (1) IEC 60320 C14 main power inlet;
Mates with removable power cord (included);
A dedicated 15 Amp circuit is strongly recommended
220-240V~50/60Hz MAX 6A (International) (1) IEC 60320 C14 main power inlet;
Mates with removable power cord (included);
A dedicated 10 Amp circuit is strongly recommended
G 6-32 screw, chassis ground lug
SPEAKER OUTPUTS LEFT/RIGHT 1 – 8 (16) 2-pin 7.62mm 15A detachable terminal blocks;
Power amplifier outputs;
Wire Size: Terminals accept up to 14 AWG
COMPUTER (front) (1) USB Type B female;
USB computer console port (6 ft cable included)
LCD Display
Green LCD alphanumeric, adjustable backlight, 2 lines x 20 characters per line;
Displays source & zone setup, amplifier and expander status, network & control configuration, volume levels, and other parameters
Controls & Indicators
SOFTKEYS (4) pushbuttons for execution of LCD driven functions
MENU (1) pushbutton, steps menu back one level
Λ, V (2) pushbuttons, scroll up or down through menu and adjust menu parameters
ENTER (1) pushbutton, executes highlighted menu item or value
VOLUME (1) continuous turn rotary encoder, adjusts menu parameters, defaults to audio volume
On/Off (1) Rocker switch, turns unit on and off
SOURCE 1 – 24 (24) pushbuttons and green LEDs, select input source for routing and adjustment
ZONE 1 – 10 (10) pushbuttons and green LEDs, select output zone for routing and adjustment
DIGITAL OUT 1 – 8 (rear) (8) green and (8) amber LEDs, green indicates link status and amber indicates data communication on the corresponding output
LAN (rear) (1) green and (1) amber LEDs, green indicates Ethernet link status, amber indicates Ethernet activity
SETUP (rear) (1) recessed miniature pushbutton and (1) red LED, used for touch-settable ID (TSID) in conjunction with Crestron Toolbox™ software
Bridging (8) red LEDs, indicate adjacent outputs are configured for bridged operation
Power Requirements
Main Power
(US/North America)
12 Amps @ 120 Volts AC, 50/60 Hz;
A dedicated 15 Amp circuit is strongly recommended
Main Power (International) 6 Amps @ 220-240 Volts AC, 50/60 Hz;
A dedicated 10 Amp circuit is strongly recommended
Cresnet Power Usage none
Temperature 41° to 104°F (5° to 40°C)
Humidity 10% to 90% RH (non-condensing)
Heat Dissipation 475 BTU/Hr (140W@8Ω), 750 BTU/Hr (240W@4Ω)
Chassis Metal with black finish, vented sides, variable-speed fan-cooled
Front Panel Metal, black finish with polycarbonate label overlay
Mounting Freestanding or 4U 19-inch rack-mountable (feet and rack ears included)
Height 7.51 in (191 mm);
6.97 in (178 mm) without feet
Width 19.0 in (483 mm);
17.29 in (439 mm) without rack ears
Depth 18.47 in (470 mm)
60.0 lb (27.3 kg)
  • PHONE: 419-661-0678
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