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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. The outer dual concentric control is labeled Bass. 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. The instrument's tone becomes smoother and richer. 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. The Level control adjusts from 80 (fully counter clockwise) to +20 (completely clockwise) which is the loudest position. Unity (zero) occurs at the twelve o'clock position. The outer knob is labeled Cut/Boost Footswitch and adjusts from 12 (rotated fully counter clockwise) to +12 (completely clockwise) at the loudest boost position. Once again zero is at the twelve o'clock position with no boost or cut applied to the signal at this adjustment. [. . . ] All inquiries must be accompanied by a description of the problem. All authorized returns must be sent to the PreSonus repair facility postage prepaid, insured and properly packaged. PreSonus reserves the right to update any unit returned for repair. PreSonus reserves the right to change or improve the design of the product at any time without prior notice. [. . . ]