OWNER’S MANUAL ACONE AUDIO CONTROLLER
IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol, within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintance (servicing) instructions in the literature accompanying the appliance.
INTRODUCTION CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT PANEL 1. Input “A” and “B” level controls These controls are normally set to their “0"-marked (detent) center position. If needed or desired, the controls can be used to individually adjust the input levels of the channels “A” and “B”. The green “Signal” LEDs indicate that audio signals are present at the inputs. The red “Peak” LEDs light whenever the audio signal is clipped inside the ACONE which might result in distortion.
FRONT PANEL 7. Sub Out Mono control The control is normally set to its center (0dB) position. This control is used to adjust the loudness level of the summed low-frequency audio signal of the two channels “A” and “B”, which serves to feed a connected monaural sub woofer power amplifier. The “Mute” switch attenuates the Sub Out Mono audio signal, which allows to easily check the entire sound reinforcement system.
REAR PANEL 11. Input connectors of channel “A” (CH A IN) and channel “B” (CH B IN) The ACONE Controller’s inputs are electronically balanced (pin2 = +, pin3 = -, pin1 = shield). The OUT-connectors are parallel-wired with their corresponding IN-connectors. This thru-connection allows to easily and conveniently feed additional gear with the original input audio signals. 12.
SPECIFICATIONS Technical Specifications ACONE All level and frequency controls in center position, Lo-EQ and Hi-EQ controls at 0dB, MID-EQ control at -4dB, unless otherwise specified. Note: 0dBu = 0.775V Crossover Mode Frequency, sweepable Filter Type 2-Way-Stereo + SUB Mono 45Hz ... 160Hz PowerMax12* LO-Cut Filter Type Frequency, sweepable 12dB/octave 20Hz ... 100Hz Equalization LO-EQ MID-EQ HI-EQ 50Hz, Shelving, 0dB ... +12dB 4kHz, Dip, -8dB ... 0dB 15kHz, Lift, 0dB ...
BLOCKDIAGRAM
