Theory Audio Design - ALC1809 9 Channel Amplified Loudspeaker Controller - Now On Show at Vision Living

At the heart of every Theory system lies an Amplified Loudspeaker Controller (ALC). The ALC-1809 when used as the core of a speaker array ranging from 2.1 to a 5.2.2 ATMOS surround sound system automatically configures itself for high-resolution Digital Signal Processing of the Theory loudspeakers purchased. The ALC1809 sets audio levels, delays, bass management and signal routing within the system. Now on show at Vision Living. (More information)

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Product Details

Theory Audio Design - ALC-1809 - Amplified Loudspeaker controller...

For advanced applications - larger format surround sound and distributed audio - the ALC-1809 is the audio equivalent of a Swiss-Army knife: including 9-high power amplifier channels, 8 balanced analogue audio inputs, 1 mic/line level input (software selectable), 96kHz/32-bit DSP processing including full signal routing, gain adjustment, 8x8 matrix bass-management, 8x8 matrix mixing, 160 parametric EQ's (20 per channel), automatic audio signal ducking for intercom and paging (perfect to allow Amazon Alexa and other voice assistants to page any or all of the distributed audio system channels), Internal band-limited and full band pink noise and sine sources, and up 75msec of delay per channel. All in a fan-less, stylish, 1U chassis.

"The fact that Theory Audio was able to pack this much power into a 1U chassis was truly remarkable."

- Gene DellaSala, Audioholics

Theory Audio ALC1809B, SB25 & SUB15B - Now On Show at Vision Living

Theory Audio Design product family all sold separately.

Theory Audio Design - ALC-1809 9-Channel Amplified Loudspeaker Controller Specifications

  • Description: 9-Channel Amplified Digital Loudspeaker Controller
  • Inputs: 8 x Balanced Analog Audio w Loop Outputs (1 mic/line level switchable)
  • Outputs: 9 x Speaker Outputs
  • 8 x Balanced Analog Audio Looping Outputs
  • 12VDC/Contact Closure Trigger Loop Output
  • Trigger: +12VDC or Contact Closure Trigger Input w Loop
  • Surround Formats Supported: 3.1, 3.2, 3.3, 5.1, 5.2, 5.3, 7.1, 7.2, 5.2.2 ATMOS
  • Audio Operation: 96kHz/24-bit
  • On-Board DSP: 96kHz/32-bit

DSP Features:

  • Automatic Configuration of Surround System Settings
  • Loudspeaker Processing For All Theory and PRO Models
  • Input Trim
  • Signal Routing
  • Gain
  • Delay (up to 75msec per channel)
  • 160 Parametric EQ Filters (20 per channel)
  • Automatic Audio Ducking for Audio Zone Paging
  • 8 x 8 Parametric Bass Management (Bass Steering)
  • 8 x 8 Matrix Mixer
  • Mono Summing: 8 Stereo + 4 mono Signals
  • Bass and Treble Controls
  • Master Volume
  • Clip Limiter
  • Internal Sine and Pink Noise Sources
  • Bandwidth: 5.5Hz-40.6kHz, -6Db
  • Frequency Response: 20Hz-20kHz, +/-0.2dB
  • Amplifier Power Output:: Channels 0-1-2: 300W, 4-ohms
  • Channels 3-8: 100W, 4-ohms, bridgeable to 300W*
  • Voltage Gain (all channels): 30dB

Input Sensitivity:
Channels 0-2: 1.1V
Channels 3-8: 660mV

Power Requirements:
Standby: 16W
Idle: 41W (1/8 power, all ch. driven): 281W

  • Idle Noise (speaker program, typ., A-wt.):
  • Channels 0-2: -82dBV (0.00008V)
  • Channels 3-8: -80dBV (0.00010V)
  • Signal to Noise Ratio:
  • Channels 0-2: 108dB
  • Channels 3-8: 105dB
  • Distortion (1kHz, 1dB below max output): <0.02%
  • AC Operation: 100V-240VAC, 50-60Hz
  • Finish: Matte Bright Aluminium
  • Dimensions: H x W x Dmm - 44.45 x 432 x 381
    With rack ears: H x W x Dmm - 44.45 x 482.6 x 381
  • Accessories: 8 x Euro-to-XLR Adapters Included
  • Software: Theory Music and Surround Automator Auto system configuration tool
  • Weight: 5.9kg
    *Bridged channels OK for "SB" speaker models only - not for subwoofer use.
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