User manual AKG HEARO 999 AUDIOSPHERE II

[. . . ] Use the DIGITAL switch to activate either the analog inputs (DIGITAL LED dark) or the digital inputs (DIGITAL LED lit). Never place the equipment near heat sources such as radiators or electric heaters or expose it to direct sunlight, excessive dust, humidity, rain, temperatures below freezing, or impacts. Never use petroleum-based cleaners or paint thinners to clean the equipment. When scrapping the equipment, remove the batteries, separate the case, circuit boards, and cables, and dispose of all components in accordance with local waste disposal rules. [. . . ] The green LED next to the ON switch lights to indicate the unit is ON. The green LED next to the DIGITAL switch lights to indicate the digital input has been selected. The bi-color LED next to the control indicates the signal level at the input to the audio circuitry: flickering/lighting green indicates optimum level range, red indicates overload. : This four-step rotary switch selects three different channels within the carrier frequency band of the integrated transmitter or switches the transmitter off ("0" position). SURROUND: This five-step rotary switch is located in the signal path between the input stage and the MODE switch. It switches the Dolby decoders on and off or adds one of three different reverb programs to normal stereo signals. the output signal of the SURROUND selector passes through the MODE switch and on to the IVA or VMAx processor or directly to the output. AUTO: This mode automatically activates the Dolby Surround Pro-Logic or Dolby Digital decoder depending on whether a Pro-Logic or Dolby Digital signal is present at the input. One green LED each will light to indicate which decoder is currently active. If a normal stereo signal is present at the input, we recommend that you set the SURROUND selector to "OFF" in order to avoid undesired sonic results. CLUB, HALL, STADIUM: Acoustic simulations of three different venues of different sizes. STEREO: This green LED indicates the following modes: Stereo signal at the input and SURROUND selector (7) in "OFF" position: SURROUND selector (7) in "CLUB", "HALL", OR "STADIUM" position: SURROUND selector (7) in "AUTO" position: MODE selector (9) in "DIRECT" position: STEREO LED off MODE selector (9) in "IVA-PHONES" or "VMAx" position and SURROUND selector (7) in "AUTO" position: 9. MODE: This three-step rotary switch selects the following modes: IVA-PHONES: The IVA processor is active and affects the signal at the PHONES and LINE outputs as well as the signal transmitted to the wireless headphones. In this mode, the green LED below the IVA-PHONES label will be illuminated. DIRECT: In this mode, all signal processors are out of circuit and all controls and indicators to the right of the MODE selector are disabled. You will hear the unchanged stereo input signal in the hardwire and wireless headphones and the loudspeakers STEREO LED on A Dolby Digital encoded signal present at the input will be automatically mixed down to a Pro-Logic encoded stereo signal. vMAx: The VMAx processor derives a 3-D signal for loudspeaker reproduction. EARS: The shape of the outer ear changes the waveform of impinging sound in a unique way that differs from person to person. Using headphones defeats these outer ear transfer functions because the sound sources are located immediately in front of the ears. In order to provide the most realistic headphone reproduction possible, AKG measured many outer ear transfer functions and electronically modeled seven representative "ear curves". In IVA-PHONES mode, the EARS selector offers a choice of one standard ear curve ("N") and six other ear curves for you to select the one that sounds the most natural to you. SOUND: In IVA-PHONES mode, this 12-step rotary switch lets you select four different sound programs, each with three speaker spreader settings (close, medium, or wide virtual stereo spread): NORM: Basic sound program for all types of program material. [. . . ] Your HEARO 999 AUDIOSPHERE II is now optimally adjusted to your ears for natural spatial hearing over headphones. To increase the virtual distance ("stereo spread") between two closely spaced loudspeakers (e. Set the SURROUND selector (7) to "OFF" for straight stereo mode or to "CLUB", "HALL", or "STADIUM" for stereo reproduction with room simulation. The VMAx processor will simulate for each of these settings a virtual loudspeaker pair with a base angle of 60°. [. . . ]