User manual DBX MODEL 150X

[. . . ] Opening the chassis for any reason will void the manufacturer's warranty. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to prevent damage. CLEAN ONLY WITH A DRY CLOTH. DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTERS, STOVES, OR OTHER APPARATUS (INCLUDING AMPLIFIERS) THAT PRODUCE HEAT. [. . . ] Pressing the Data Wheel will select the effect parameter to be edited. <PREV PG NEXT PG> Subharmonic Subharmonic - -On/Off Subharmonics % 0-100 24-36Hz Level - 24-36Hz 36-56Hz Level - 36-56Hz SUBHARMONIC The NEXT and PREV buttons scroll through the pages of selected module. Successive presses of the Data wheel will select effect parameters within the currently selected page. ® DriveRackTM PA User Manual 13 Section 2 Editing Functions DriveRack PA TM 2. 5 Navigating the XOVER Section To edit the parameters of the Crossover used in a selected program, simply use the following procedure. Once you have reached the Crossover module, Navigate through the Pages of the selected Crossover module by pressing the "Next Page" or "Prev Page" buttons successively until arriving at the desired Page. XOVER XOVER High Pass Freq- 20. kHz to Out Type -BW6-24, LR12, 24 Gain- Inf to 20dB Low Low Pass Freq- 20. kHz to Out Type- BW6-24, LR12, 24 High Pass Freq- 20. kHz to Out Type- BW6-24, LR12, 24 Gain- Inf to 20dB Mid Low Pass Freq- 20. kHz to Out Type- BW6-24, LR12, 24 High Pass Freq- 20. kHz to Out Type- BW6-24, LR12, 24 Gain- Inf to 20dB High Low Mid Successive presses of the Data wheel will select effect parameters within the currently selected page. 2. 6 Navigating the Feedback Suppression Section From program mode, press the FEEDBACK button. Pressing the Data Wheel will select the effect parameter to be edited. <PREV PG NEXT PG> FEEDBACK AFS On/Off AFS Clear Mode - Fixed/Live Type- Speech, Low, Med and High Number of Fixed filters 0-12 Live filter Lift - On/Off Lift After - 0-60 FEEDBACK The NEXT and PREV buttons scroll through the pages of selected module. Successive presses of the Data wheel will select effect parameters within the currently selected page. ® 14 DriveRackTM PA User Manual DriveRack PA TM Editing Functions Section 2 2. 7 Navigating the Comp/Limiter Section From program mode, press the comp/limiter button to move to eithter the Compressor or Limiter module. Once you have reached the Crossover module, successive presses of COMP/LIMITER button will move through each channel that utilizes either a Compressor (pre Crossover) or Limiter (post-crossover) module. Navigate through the Pages of the selected compressor or Limiter module by pressing the "Next Page" or "Prev Page" buttons successively until you arrive at the desired Page. COMP/LIMITER COMPRESSOR/LIMITER COMP Comp On/Off Over Easy Off, 1-10 Threshold -40-20dB Ratio 1:1 to Inf:1 Gain -20 to 20dB The Comp/Limiter button toggles through the Compressor or Limiter modules used in each channel of the selected program. LIMITER Limiter On/Off Over Easy Off, 1-10 Threshold -40-20dB Successive presses of the Data wheel will select effect parameters within the currently selected page. 2. 8 Navigating the Delay Section From program mode, press the Delay button. Pressing the Data Wheel will select the effect parameter to be edited. <PREV PG NEXT PG> DELAY Delay - On/Off Length - Delay Time - Course, Fine Units - Seconds, Feet, Meters DELAY The NEXT and PREV buttons scroll through the pages of selected module. Successive presses of the Data wheel will select effect parameters within the currently selected page. ® DriveRackTM PA User Manual 15 Section 2 Editing Functions DriveRack PA TM 2. 9 Navigating the Utility Section From program mode, press the UTILITY button. Pressing the Data Wheel will select the effect parameter to be edited. UTILITY LCD Contrast 1-16 AEQ Plot - RTA/GEQ Sales Banner - On/Off Compressor/Limiter Threshold Meters UTILITY Successive presses of the Data wheel will select effect parameters within the currently selected page. 2. 10 Navigating the Wizard Section From program mode, press the WIZARD button. Pressing the Data Wheel will select the effect parameter to be edited. <PREV PG NEXT PG> SYSTEM SETUP Input Setup - Stereo or Mono GEQ Setup-Dual Mono or Stereo Linked Main Speaker SelectSee list Sub Speaker SelectSee list WIZARD Amp SelectHigh, Mid, Low See list The NEXT and PREV buttons scroll through the pages of selected module. WIZARD Amp SensitivityHigh, Mid, Low Amp Level High, Mid, Low Low Amp Bridged/ Normal- Load New ProgramLeft and Right when using Linked Graphic EQ AUTO EQ WIZARD Connect Mic Pink Noise Level -Inf to 20dB Auto EQ - L Auto EQ - R Auto EQ - L-R AFS WIZARD Mixer gain turn down prompt Select Number of Fixed Filters - 0-12 Select Type Low, Med, High mode Mixer Gain AdjustFixed Filter Setup Done- Successive presses of the Data wheel will select effect parameters within the currently selected page. ® 16 DriveRackTM PA User Manual DriveRack PA TM Section 3 SOFTWARE OPERATING FUNCTIONS ® Section 3 Operating Functions DriveRack PA TM The Operation section of the DriveRackTM PA will be your key to successful navigation of the operation of the DriveRackTM PA. The following information provides descriptions about program functions and operating functions of the DriveRackTM PA. 3. 1 Program Definition The first step in understanding the thorough programming capabilities of the DriveRackTM is to understand the elements involved, that when combined, define a complete "program. " Within an individual program, there are several levels of editing that make up the complete program. After turning the unit on, you will be at the "program" mode level. This level supplies the user with current program information such as: current signal path, effect usage, and program name. The DriveRackTM PA will store 25 user programs in addition to the 25 factory programs. When storing changes to a Factory program, you must replace an existing User program. ® 20 DriveRackTM PA User Manual DriveRack PA TM Section 4 PARAMETERS DETAILED PARAMETERS ® Section 4 4. 1 Pre-Crossover Detailed Parameters DriveRack PA TM The DriveRackTM PA offers complete editing flexibility, by offering in-depth control over every parameter within each effect module. The following section will provide you with descriptions and explanations of all parameters within the DriveRackTM PA. The DriveRackTM PA's Pre-Crossover EQ section may be configured as a single or linkable 28 band graphic EQ. EQ On/Off Turns the GEQ on and off. Flatten/Restore This parameter either flattens the GEQ or restores the GEQ to the last setting before flattening. The DriveRack unit allows you to leave the EQ edit window and return without losing the edited EQ settings. Frequency (F) 31. 5Hz to 16. 0kHz This parameter allows you to select any one the 28 available frequencies. Gain (G) -12 to +12 dB This parameter allows you to adjust the level of any one of the 28 bands of the GEQ in . 5 dB increments. 4. 2 Feedback Eliminator The DriveRackTM PA is the first product in the dbx family to offer the exclusive patent pending AFS (Advanced Feedback Suppression) feedback elimination module. Feedback is caused when a microphonic signal such as a guitar pickup or microphone is reproduced by an amplification and is repeatedly picked up in phase. The AFS uses Precision Frequency Detection and state-of-the-art processing to determine the exact portions of a given frequency of your feedback that need to be removed (instead of taking out large sections of your sound). The AFS module of the DriveRackTM PA allows the user to optimize the elimination of feedback. In the past, graphic equalizers were used to eliminate feedback from a system. This was an acceptable method for eliminating feedback, but when this method was precision tested, the result clearly showed that a single 1/3 octave EQ slider was removing approximately half of the signal power. With the AFS, the module removes the feedback automatically and the proprietary, precision AFS filters remove only a fraction of the frequency spectrum. The following diagram shows AFS as opposed to competing, competitive feedback eliminators and conventional graphic EQs: dbx AFS Conventional Feedback Elimination Graphic EQ AFS On/Off Turns the AFS module on and off. [. . . ] Quite often PA systems are setup with the amplifier input controls turned all the way up in the incorrect assumption that this is the only way to get the maximum output level. Amplifiers are fixed gain devices, turning down the amplifier input attenuators does not change the potential output of the amplifier; it only requires more input voltage to get full output power. Many amplifiers will clip with an input level greater than +6 dBu when the input attenuators are turned all the way up. Most mixing consoles can deliver over +18 dBu of output level before clipping. [. . . ]