User manual UNIVERSAL AUDIO UA4110

[. . . ] Model 4110/8110 Four and Eight Channel Precision Microphone Preamplifiers Universal Audio Manual Number 65-1001 Revision 1. 00 The 4110 and 8110 Preamps Thank you for choosing the Universal Audio Precision Microphone Preamplifier The X110 series is based on the discrete class A analog technology from Universal Audio's award winning 2192 converters. Fidelity The X110 series preamps offer totally transparent, crystal clear natural fidelity as well as flexible control over the input impedance and transformer saturation resulting in increased flexibility making it a great choice for a wide variety of applications. The X110 series offers a complimentary tool to be used along side our 2-610 tube preamps and the classic overdrive character of our 2108 solid-state preamps. The X110 analog signal path uses DC-coupled, matched-FET, all discrete Class-A circuitry, resulting in ultra-low noise, excellent transient response and unmatched sound. Capacitors are not used in the signal path in order to avoid degradation in audio quality and phase distortion while increasing the overall image stability. [. . . ] The 4110/8110 may be used as a "tone box" in this configuration, offering a variety of sonic colors based on the front panel control settings. · Hi-Z: Selects the signal from the front panel (4110 only), unbalanced Hi-Z 1/4"connector. This input can have an input impedance of 47K or 2. 2M and is intended for bass, guitar or any instrument with a magnetic or acoustic transducer pickup. The 47K setting is best suited for 10 dBv level signals, typically found on active basses and guitars. The 2. 2M setting is appropriate for instruments with passive pickup systems. Since an instrument's output impedance may be somewhere between the active and passive levels, feel free to experiment to achieve the best sound at the desired level. Gain The Gain control is the middle knob on the left side of the channel block. This control should be at higher settings when using low output microphones, such as ribbon mics and some older dynamic mics. The knob is continuously variable, the 0-10 front panel settings are relative scale markings and do not represent any specific dB level. In addition to changing the volume, the Gain control will change the preamp tone. Less Gain and more Level will create a cleaner tone, while more Gain and less Level will yield a warmer tone. Level The Level control is the top knob on the left side of the channel block. This is the channel's master volume control and determines the amount of signal from the preamplifier's Line Output. The knob is continuously variable, the 0-10 front panel settings are relative scale markings and do not represent any specific dB level. 5 Function Switches (backlit push buttons) Polarity The Polarity switch is the top switch in the column of four round push buttons located on the lower right side of the channel block. The polarity switch will light up when enabled and is labeled with the symbol: "". Normally the switch should be off and only enabled when it is desirable to reverse the polarity of the Line Output signal. Low Cut The Low Cut switch is the second switch down in the column of four round push buttons located on the lower right side of the channel block. The switch will light up when enabled and is labeled with the symbol: " " When enabled the input signal will pass through a 100Hz 6dB per octave filter. Mic Pad The PAD switch is the third switch down in the column of four round push buttons located on the lower right side of the channel block. The switch will light up when enabled and will attenuate the Mic input level by 15dB. When undesired distortion is present at low gain levels it is recommended to engage the Pad switch then turn up the Gain and level controls as needed. The Mic Pad has no effect on Instrument and Line In signals +48 V (Phantom Power) The +48 V switch is the bottom switch in the column of four round push buttons located on the lower right side of the channel block. The switch will light up when enabled and 48 volts will be supplied to the Mic input jack. [. . . ] Modern day compressors offer a great degree of programmability and flexibility while older devices such as the 1176 and the LA-2A are more straightforward in their design. Perhaps it is this fact that has contributed to their appealing sound and the longevity of their popularity. The 1176 LN The original Universal Audio 1176LN was a major breakthrough in limiter technology ­ the first true peak limiter with all transistor circuitry offering superior performance and a signature sound. Evolved from the popular Universal Audio 175 and 176 vacuum tube limiters, the 1176LN retained the proven qualities of these industry leaders, and set the standard for all limiters to follow. [. . . ]