User manual BBE SOUND ACOUSTIMAX

[. . . ] If the power cord plug is loose, contact your electrician to replace the defective and unsafe AC Foreign Objects - Be careful that foreign objects and liquids do not enter the enclosure through openings. Use a damp cloth for cleaning. USE Power Source - Connect the appliance to a power supply only of the type described in the operating instructions or as marked on the appliance. [. . . ] In the past, these problems proved unsolvable and were thus delegated to a position of secondary importance in audio system design. However, phase and amplitude integrity is essential to accurate sound reproduction. Research shows that the information which the listener translates into the recognizable characteristics of a live performance are intimately tied into complex time and amplitude relationships between the fundamental and harmonic components of a given musical note or sound. When these complex relationships pass through a speaker, the proper order is lost. A lower frequency may reach the listener's ear first or perhaps simultaneously with that of a higher frequency. In some cases, the fundamental components may be so time-shifted that they reach the listener's ear ahead of some or all of the harmonic components. This change in the phase and amplitude relationship on the harmonic and fundamental frequencies is technically called "envelope distortion. " The listener perceives this loss of sound integrity in the reproduced sound as "muddy" and "smeared. " In the extreme, it can become difficult to tell the difference between musical instruments, for example, an oboe and a clarinet. conducted extensive studies of numerous speaker systems over a ten year period. With this knowledge, it became possible to identify the characteristics of an ideal speaker and to distill the corrections necessary to return the fundamental and harmonic frequency structures to their correct order. While there are differences among various speaker designs in the magnitude of their correction, the overall pattern of correction needed is remarkably consistent. 2 CONTROLS AND CONNECTORS MID EQ FREQUENCY SELECTOR CLIP INDICATOR Indicates input overload. Continuously variable from 400Hz to 2. 5kHz. MID EQ LEVEL CONTROL 12 dB of boost or cut at the selected frequency. GAIN CONTROL Input gain control. BASS CONTROL MUTE INDICATOR LED illuminates when mute footswitch is engaged. 12 dB of boost or cut at 60Hz. TREBLE CONTROL 12 dB of boost or cut at 10kHz. 1/4" OUTPUT The 1/4" output is designed for running instrument cables directly into the next instrument level input of your signal chain. MUTE FOOT SWITCH Engages mute function. 3 CONTROLS AND CONNECTORS NOTCH FILTER FREQUENCY SELECTOR Continuously variable from 70Hz to 250Hz. PROCESS CONTROL Regulates the amount of phase correction. CLIP INDICATOR NOTCH FILTER CONTROL Adjusts amount of attenuation at the selected notch frequency. There is 3dB of headroom when LED is illuminated. SONIC MAXIMIZER INDICATOR LED illuminates when Sonic Maximizer footswitch is engaged. OUTPUT LEVEL CONTROL 1/4" INPUT Plug in your guitar, bass or the previous instrument level output of your signal chain. SONIC MAXIMIZER FOOT SWITCH Engages BBE Sonic Maximizer. LO CONTOUR CONTROL Regulates the amount of phase corrected bass frequencies. 4 CONTROLS AND CONNECTORS/REAR PANEL DI OUT AC INLET Use supplied 12VAC power adapter ONLY. [. . . ] During this period, we will repair units free of charge providing that they are shipped prepaid to: BBE Sound, Inc. , 5381 Production Drive, Huntington Beach, CA 92649. All charges related to non-UPS shipping, including customs clearance, will be billed. [. . . ]