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. Our no-compromises design approach and extensive history in analog and digital circuit design ensure your signals are totally accurate and have the highest possible fidelity. "SHAPE" Control The X110 handles multi-channel applications and excels among the best modern, ultra-clean units. In addition, it also offers enough sonic variation to create the "character" UA mic preamps are so known for, effectively maximizing multi-channel functionality. Every channel of the X110 Preamp features dedicated Gain and Level controls, dual input Impedance Selection, and a 3-way "SHAPE" switch offering variable signal-paths for maximum sonic versatility. While the OFF position is perfect for a modern preamp sound with no coloration, Position 1 (Vintage) borrows from vintage circuits and adds transformer saturation, enhancing harmonic content. Position 2 (Saturate) maintains transformer color and adds soft limiting, particularly useful on transient rich and dynamic sounds. Features · · · · · DC-coupled, matched-FET, all discrete Class-A, no-compromises analog signal path Ultra-low noise High Gain Pristine signal path uses no capacitors reducing phase distortion and avoiding degradation in audio quality and image stability SHAPE Control offers flexible sonics, providing variations of harmonic color, subtle compression and soft limiting ii · · · · · · · Dual impedance input transformer Separate Gain and Level controls for maximum signal to noise control and flexibility Multi-segment LED bar graph output metering on each channel Separate 3 stage input status LED on each channel Pad, Phase, Low Cut and +48 V all with separate backlit switches Line level inputs on every channel Rugged 3U rack mount chassis In addition to the 4110 & 8110 Preamps, Universal Audio has released reproductions of the classic Teletronix LA-2A Leveling Amplifier and 1176LN Limiter as well as the 610 tube preamp and 2108 microphone preamplifier, which are based on preamps used in legend Bill Putnam Sr.'s custom consoles. Universal Audio also creates software emulations of our vintage hardware that run on our UAD-1 DSP card as well as Digidesign's Pro Tools platform. All of these products are designed to meet the demands of the modern recording studio, yet retain the character and quality of vintage equipment. See more at www.uaudio.com including the award winning 6176 channel strip, the new LA610 all-tube channel strip, and 2192 Master Audio Interface A/D and D/A. iii IMPORTANT SAFETY INSTRUCTIONS Before using this unit, be sure to carefully read the applicable items of these operating instructions and the safety suggestions. Afterwards keep them handy for future reference. Take special care to follow the warnings indicated on the unit, as well as in the operating instructions. 1. 2. 3. Water and Moisture ­ Do not use the unit near any source of water or in excessively moist environments. Object and Liquid Entry ­ Care should be taken so that objects do not fall, and liquids are not spilled, into the enclosure through openings. Ventilation ­ When installing the unit in a rack or any other location, be sure there is adequate ventilation. Improper ventilation will cause overheating, and can damage the unit. Heat ­ The unit should be situated away from heat sources, or other equipment that produce heat. Power Sources ­ The unit should be connected to a power supply only of the type described in the operating instructions, or as marked on the unit. Power Cord Protection ­ AC power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them. Pay particular attention to cords at plugs, convenience receptacles, and the point where they exit from the unit. Never take hold of the plug or cord if your hand is wet. Always grasp the plug body when connecting or disconnecting it. Grounding of the Plug ­ This unit is equipped with a 3wire grounding type plug, a plug having a third (grounding) pin. This plug will only fit into a groundingtype power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the purpose of the grounding-type plug. 8. 4. 5. 6. 7. Carts and Stands ­ The unit should be used only with a cart or stand that is recommended by the manufacturer. The unit and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the unit and cart combination to overturn. 9. Wall Or Ceiling Mount ­ The unit should be mounted to a wall or ceiling only as recommended by the manufacturer. 10. Cleaning ­ The unit should be cleaned only as recommended by the manufacturer. 11. Nonuse Periods ­ The AC power supply cord of the unit should be unplugged from the AC outlet when left unused for a long period of time. 12. Damage Requiring Service ­ The unit should be serviced by a qualified service personnel when: a) The AC power supply cord or the plug has been damaged: or b) Objects have fallen or liquid has been spilled into the unit; or c) The unit has been exposed to rain; or d) The unit does not operate normally or exhibits a marked change in performance; or e) The unit has been dropped, or the enclosure damaged. 13. Servicing ­ The user should not attempt to service the unit beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. iv Notice This manual provides general information, preparation for use, installation and operating instructions for the Universal Audio 4110 and 8110 preamps. The information contained in this manual is subject to change without notice. Universal Audio, Inc. makes no warranties of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Universal Audio, Inc. shall not be liable for errors contained herein or direct, indirect, special, incidental, or consequential damages in connection with the furnishing, performance, or use of this material. Copyright © 2005 Universal Audio, Inc. All rights reserved. This manual and any associated software, artwork, product designs, and design concepts are subject to copyright protection. No part of this document may be reproduced, in any form, without prior written permission of Universal Audio, Inc. Trademarks LA-2A, 1176LN, 2-610, 2108, 6176, 2-1176, LA-610, 4110, 8110, 2192, UAD-1 and the Universal Audio, Inc. logo are trademarks of Universal Audio, Inc. Other company and product names mentioned herein are trademarks of their respective companies. v Table Of Contents Specifications..................................................................................................................... 1 Operating Instructions........................................................................................................ 3 Front Panel ............................................................................................................... 3 Rotary Controls ......................................................................................................... 4 Input Select ............................................................................................. 4 Gain......................................................................................................... 5 Level ........................................................................................................ 5 Function Switches..................................................................................................... 6 Polarity .................................................................................................... 6 Low Cut.................................................................................................... 6 Mic Pad.................................................................................................... 6 +48 V (Phantom Power) .......................................................................... 6 Output Meter............................................................................................................. 6 Input Meter ............................................................................................................... 6 SHAPE Control Switch ............................................................................................... 7 Power Switch ............................................................................................................ 7 Rear Panel .......................................................................................................................... 8 Input/Output............................................................................................................. 8 AC Power .................................................................................................................. 8 Fuse/Mains ............................................................................................................... 8 Voltage Select........................................................................................................... 9 Historical Notes ................................................................................................................ 10 The 610 Preamp...................................................................................................... 10 The 1176 and LA-2A Compressors.......................................................................... 11 The 1176................................................................................................................. 11 The LA-2A ............................................................................................................... 12 vi 4110 / 8110 Performance Specifications Mic Input Impedance............................................................................500 ohms, 2k ohms Balanced Line Input Impedance.........................................................................6.5k ohms Instrument Input Impedance.................................................................47k ohms, 2.2M ohms Max Mic Input Level, No Pad...........................................................+3 dBu, 0.1% THD+N Ratio Max Mic Input Level With Pad.........................................................+14 dBu, 0.1% THD+N Ratio Max Instrument Input Level...........................................................+25 dBu, 0.1% THD+N Ratio Max Output Level into 600 ohms........................................................+23 dBu, 1% THD+N Ratio Max Output Level into 100k ohms.....................................................+30 dBu, 0.2% THD+N Ratio Internal Output Impedance..................................................................................90 ohms Recommended Minimum Load............................................................................600 ohms Mic In Freq. Response .................................................................10 Hz to 50 kHz, +/- 0.1 dB Mic ­3dB roll off point, 150 ohm source....................................................................100 kHz Line In Freq. Response, 600ohm source................................................10 Hz to 30 kHz, +/- 0.2 dB Line In ­3dB roll off point, 600 ohm source ..................................................................90 kHz Instrument In Freq. Response (2.2M input).............................................10 Hz to 70 kHz, +/- 0.1 dB Instrument In ­1dB roll off point...........................................................................200 kHz Low Cut ­3dB roll off point...................................................................................100 Hz Max Gain Line Input................................................................... ...