User manual BBE SOUND DI-400

[. . . ] 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. Power-Cord Protection - Route the power cord so that it is not likely to be walked on or pinched by having objects placed on it, paying particular attention to the plugs, receptacles, and the point where the cord exits from the appliance. Grounding or Polarization - Do not defeat the grounding or polarization feature of the AC power cord. [. . . ] 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. The BBE Process is so unique that 42 patents have been awarded by the U. S. Patent Office. 4 FRONT PANEL 1/4" INPUT CONNECTOR The 1/4" input connector of the DI-400 is unbalanced. The 1/4" input is designed for running instrument cables directly into the DI-400. IN/OUT PUSH BUTTON Engages the Sonic Maximizer Process. When the switch is up, the BBE Process is off. LOW CONTOUR CONTROL Regulates the amount of phase corrected bass frequencies. PROCESS CONTROL Regulates the amount of phase correction. 1/4" THRU CONNECTOR This 1/4" connector is wired in parallel to the Input connector and is used for continuing the connection to the instrument amplifier. PAD PUSH BUTTON Push in to activate "-15dB" pad. LED STATUS PHASE PUSH BUTTON Push in to reverse phase. 5 "RED" = power on, BBE off/out, "GREEN" = power on, BBE on/in. LED not illuminated = power off. POWER SWITCH The Sonic Maximizer LEDs will illuminate when the power is on. REAR PANEL XLR OUTPUT CONNECTOR The XLR output of the DI-400 is balanced. The XLR output is used for running from the DI-400 directly to the input of a mixing console. We request that a "RETURN AUTHORIZATION" be issued by the dealer from whom you purchased the unit. [. . . ] All charges related to non-UPS shipping, including customs clearance, will be billed. The warranty will be honored for the longer of either 90 days from the date of any service or the remainder of the original 5 Year factory warranty. The equipment has been electrically damaged by improper connection or attempted repair by the customer or a third party. The bill of sales indicates that the purchase date of the equipment is not within the warranty period. [. . . ]