Features

Overview: The linkDQ is an active 2-channel line output converter, line driver, and bass processor, with speaker level and RCA inputs.

Bass Processor: A single band parametric equalizer allows fine tuning the bass output.

Speaker Input: The speaker level inputs are compatible with most factory stereo systems. They will accommodate from 2 to 40 volts RMS per channel (equivalent to 400 watts at 4Ω).

Load Detect Compatible: The speaker level inputs are loaded to simulate the factory system seeing a speaker. If an impedance lower than 180Ω is needed, the optional linkLD external parallel load can be added to the speaker level inputs. (The linkLD adds a 45Ω impedance in parallel to present a 36Ω load.)

Output Level: The 10 volt RMS maximum allows you to adjust output voltage to the top of your amplifier's input range.

Remote: An optional linkRC wired remote control can be added to adjust the linkDQ's output level (0 dB to -30 dB).

Clip Indicator: An onboard LED indicates when the output signal is too high and is clipping, making it easy to maximize the output levels without distortion.

Auto Turn-on: The speaker level inputs have a DC-offset circuit, and both the speaker level and RCA inputs have a signal sensing circuit. The unit turns on when there's an input signal and turns off when the signal disappears. There is also a +12 volt remote turn-on input and the auto turn-on circuits can be disabled.

Terminal Blocks: The power/ground/remote-in/remote-out terminal and the speaker level inputs are removable Phoenix terminals (Euroblock). The wiring is attached to the block, then the block is plugged into the chassis. The terminal blocks will accommodate wire up to 16-gauge.

Connections:

• Power: removable 4-pin Phoenix terminal
  • Ground: minimum 18-gauge wire recommended
  • +12 volts: minimum 18-gauge wire recommended with a 1-amp fuse (not included)
  • Remote In: unit turns on when +12 volts applied to this terminal
  • Remote Out: +12 volt output when unit is on (used to turn on an amp, 500 mA max)
• Speaker Level Inputs: removable 4-pin Phoenix terminal
• Line Input: stereo RCA jacks
• Line Output: stereo RCA jacks
• Remote: RJ-45 jack for optional linkRC wired remote control

External Controls:

• Gain: rotary dial
• Auto Turn-on: two jumpers on the end of the chassis; DC-offset and audio signal sensing circuits can be independently turned on/off; factory setting for both is on
• Parametric EQ:
  • Boost: sets the amount of boost; 0 dB to +12 dB (continuously variable)
  • Frequency: sets the center frequency; 30 Hz to 80 Hz (continuously variable)
  • Width: adjusts the bandwidth of frequencies enhanced by the equalizer; Narrow/Wide

Hidden Controls: There are several jumper pins inside the linkDQ chassis, to make adjustments that are not typically necessary:

• Speaker Level Input Sensitivity Range: The 2-position jumpers are set to 2-20 volts RMS (factory setting) or 4-40 volts RMS. (There are separate jumpers for the left and right channels.)
• RCA Input: The 2-position jumpers are set to Balanced (factory setting) or Unbalanced. (There are separate jumpers for the left and right channels.)

Specifications:

• Frequency response:
  • +0/-1 dB: 10 Hz-70 kHz
  • +0/-3 dB: 10 Hz-100 kHz
• Input Impedance:
  • Speaker input: 180 Ω
  • RCA input: 20 kΩ
• Input Sensitivity:
  • Speaker input: 2-40 volts RMS
  • RCA input: 0.5-5 volts RMS
• Output Impedance: 50 Ω
• Maximum Output Voltage: 10 volts RMS
• THD+N: 0.04% (at 10 volts output)
• Signal to Noise Ratio:
  • Speaker input:
    • 1 volt output: 96 dBA
    • 4 volt output: 107 dBA
    • 10 volt output: 115 dBA
  • RCA input:
    • 1 volt output: 97 dBA
    • 4 volt output: 108 dBA
    • 10 volt output: 116 dBA
• Parametric EQ:
  • Boost: 0 dB to +12 dB (continuously variable)
  • Frequency: 30-80 Hz (continuously variable)
  • Width (Q): 2-position switch; Narrow or Wide
• Remote Level Control (with optional linkRC): 0 dB to -30 dB
• Current Draw:
  • Operating: 270mA (without remote out)
  • Standby: 1.8mA
• Dimensions:
  • Width: 4½" (5½" including cables)
  • Height: 1¼"
  • Depth: 3"