User manual PRESONUS ACOUSTI-Q

[. . . ] ACOUSTI-Q Tube Preamplier/Blender USER'S MANUAL 1. 0 Copyright © 2001, PreSonus Audio Electronics, Inc. ALL RIGHTS RESERVED TABLE OF CONTENTS 1 1. 1 1. 2 2 2. 1 2. 1. 1 2. 1. 2 2. 1. 3 2. 1. 4 2. 1. 5 2. 2 2. 2. 1 2. 2. 2 2. 2. 3 3 3. 1 3. 2 3. 2. 1 3. 3 4 5 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] While keeping the note on the guitar fretted, turn the Boost/Cut (outer control) counterclockwise about halfway. Brilliance/Bass Control The Brilliance/Bass dual concentric control can be used for boosting or cutting the frequencies of 8kHz and above and 100Hz and below by as much as +/12 dB. The frequencies of 8kHz and above can be increased or decreased by adjusting this knob. The twelve o'clock position is zero and no effect on the high frequencies is heard. By rotating the Brilliance control clockwise from the twelve o'clock (0) position, the brighter, more treble portion of the signal becomes more pronounced. If the instrument seems dull and lifeless, boosting the brilliance control results in a sound with more air and sparkle. If the instrument's sound seems thin, rotating the Brilliance control counter clockwise can reduce the harsh quality and make the overall tone of the instrument rounder and more full range. A little adjustment goes a long way and gradual adjustment of this control produces a much more pleasing sound than extreme positions. As it's name implies, this control adjusts the Bass frequencies from 100Hz and below. Once again, the twelve o'clock position corresponds to zero boost or cut. No effect is exerted over the low frequencies of the signal while the control remains in this position. The Bass frequencies (100Hz and below) can be boosted by rotating this control clockwise. Over adjustment of the Bass control can result in a mufed sound and can induce feedback if care is not taken. Conversely, counter clockwise rotation of the Bass control from the twelve o'clock (0) position can reduce 100Hz and below by as much as 8 CONTROLS & OPERATION 2 twelve dB. The resulting sound from overly reducing the low frequencies of the instrument's signal can be very thin and harsh. Incremental adjustments while listening to the effect the adjustments are having on the sound of the instrument will yield the best results. 2. 1. 4 MASTER The Master section of the ACOUSTI-Q contains a Mute switch and a dual concentric control with the inner knob labeled LEVEL and the outer knob labeled CUT/ BOOST FOOTSWITCH. The Mute switch turns off the +20 -12 -80 +12 signal at the Main (XLR) balanced output while allowing the signal to remain at the Amp/Tuner -20dB 1/4" output. This feature lets the performer tune his/her instrument silently if a tuner has been connected to the Amp/Tuner output provided without sending a signal to the Main output. The Mute function may be engaged by pressing the Mute switch located on the front panel to the ON position or by engaging this function by way of the optional footswitch. The dual concentric control of the Master section is used to set the output level of the ACOUSTI-Q. The inner knob adjusts the output Level of the unit's Main output. [. . . ] During the warranty period PreSonus shall, at its sole and absolute option, to either repair or replace, free of charge, any product that proves to be defective on inspection by PreSonus or its authorized service representative. To obtain warranty service, the purchaser must rst call or write PreSonus at the address and telephone number printed below to obtain a Return Authorization Number and instructions of where to return the unit for service. All authorized returns must be sent to the PreSonus repair facility postage prepaid, insured and properly packaged. PreSonus reserves the right to change or improve the design of the product at any time without prior notice. [. . . ]