8/22/2017 SUBLIME ACOUSTIC MODEL K231
Stereo 3-Way Active Crossover
User Manual
Model K231
Sublime Acoustic, LLC
Features
• Stereo 3-way Active Crossover for driving separate subwoofer, midrange and tweeter amplifiers
• Linkwitz-Riley crossover circuits, 4
th
order 24dB/Octave or 2
nd
order 12dB/Octave filter slope
• For Bi-Amping or Tri-Amping your sound system, or to add a sub-woofer to vintage audio systems lacking LFE outputs
• All analog design employing only the highest quality audiophile grade components:
• Burr-Brown audiophile grade op-amps
• Metalized Polypropylene Film capacitors
• Metal film resistors with 1% and 0.1% precision
• ALPS metal film potentiometers
• Crossover frequencies are selected through pluggable 'XO Frequency Modules'
• Wide range of XO Frequency Modules are available to support any crossover frequency (see list below)
• High, mid and sub channels are phase aligned to within fractions of a degree to eliminate distortion at the XO frequencies
• Stereo or Mono Subwoofer Output - Optional Subwoofer channel L/R mixer
• Supports Balanced and Unbalanced audio input and output signaling
• Sub, Mid and High output gain level front panel adjustments
• Baffle Step Compensation, Adjustable Gain, Selectable baffle size ranges
• Silent On/Off circuit – No loud ‘Thump’ when powering On or Off
• Can be configured for 3-way or 2-way active crossover operation
Specifications:
• Total Harmonic Distortion (THD): Better than 0.0005%
• Total Harmonic Distortion + Noise (THD+N): Better than 0.0028%
• Intermodulation Distortion (IMD): Better than 0.0058%
• Signal-to-Noise Ratio (SNR): 120dB
• Channel Crosstalk: Less than -83dB
• Frequency Response: Linear from 10Hz - 250KHz
• CMRR (balanced inputs/outputs): Better than 70dB
• Input Impedance: 20K ohms unbalanced, 40K ohms balanced
• Output Impedance: 200 ohms, AC coupled
• Input Signal Max: 5.5V
• Insertion Gain: Adjustable Sub, Mid and High channels -9dB to +8dB
• Filter Topology: Linkwitz-Riley, Constant Voltage, 4
th
Order 24dB/Octave, 2
nd
Order 12dB/Octave
• Enclosure: Black Aluminum Extruded Chassis
• Dimensions: 6.5”W x 6.5”D x 2.5”H
• Shipping Weight: 3 lbs
Inputs:
• Stereo Balanced: ¼” TRS Jacks
• Stereo Unbalanced: RCA jacks
• Power Supply: Wall Mount AC adapter, 100VAC to 240VAC input, 24VDC 500mA output, 12W
Outputs:
• Stereo Balanced High, Mid, Low: ¼” TRS Jacks
• Stereo Unbalanced High, Mid, Low: RCA Jacks
We support the following Crossover frequencies:
• Any multiple of 10Hz from 60Hz-200Hz (e.g. 60Hz, 70Hz, ... 200Hz)
• 250Hz, 275Hz
• Any multiple of 100Hz from 300Hz-4000Hz
• Any multiple of 500Hz from 4500Hz-7000Hz
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