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Summary of Contents for Universal Audio 6176
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Page 1: Channel Strip
Model 6176 Channel Strip Universal Audio Manual Number 65-0013 Revision 1.2 Universal Audio, Inc. www.uaudio.com 2125 Suite A, Delaware Ave. Santa Cruz, CA 95060 (831) 466-3737 voice (831) 466-3775 fax www.uaudio.com... - Page 2 The 6176 Channel Strip Thank you for purchasing the 6176 Channel Strip. This unit brings together 1 channel of our 2-610 Mic Pre with an 1176 Limiter. The 610B was inspired by the microphone preamp section of the 610 console designed by my father, M.T. “Bill” Putnam, in the 1950s.
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Page 3: Important Safety Instructions
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 itself, as well as in the operating instructions. Water and Moisture –... - Page 4 Universal Audio, Inc. Trademarks LA-2A, 1176LN, 2-610, 2108, 6176 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.
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Page 5: Table Of Contents
1176 Front Panel ................10 Input Level ................10 Output Level................11 Attack Control .................11 Release Control................11 Compression Ratio..............11 Meter Function ................12 Meter Calibration..............12 Join / Split................12 Stereo Operation................12 6176 Rear Chassis..................13 Connectors ..................13 1176 Input Loading ................13 Fuse....................13 Voltage Select ...................14 History ......................15... -
Page 6: 610B Specifications
610B Specifications Microphone Input Impedance Selectable, 500 W or 2k W Balanced Line Input Impedance 20k W Hi-Z Input Impedance Selectable, 2.2M W or 47k W Maximum Microphone Input Level +18 dBu (2K input Imp. & 15 dB Pad in) Maximum Output Level +20 dBm Internal Output Impedance... - Page 7 1176LN Specifications Input Impedance: Selectable, 15k W or 600 W Output Load Impedance: 600 W (floating) External Connections: XLR Connectors Frequency Response: +/- 1 dB. 20Hz to 20 kHz Gain: 40 dB, +/- 1dB Distortion: Less than 0.5% T.H.D. from 50 Hz to 15 kHz with limiting, at 1.1 seconds release setting.
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Page 8: 610B Operating Instructions
610B Operating Instructions The 610B is a vacuum-tube microphone/instrument/line preamplifier. The main circuit has two gain stages that utilize a dual-triode tube operating in a class A single-ended configuration. Variable negative feedback is applied to both of these stages to control gain, distortion, and frequency response. - Page 9 The 6176 may be used as a “tone box” in this configuration, offering a variety of sonic colors based on the front panel control settings.
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Page 10: Level
1176LN limiter. When the switch is “down” in the SPLIT position, each side of the 6176 is a separate device with associated in / out connections on the rear chassis. When the switch is “up” in the JOIN position, the 6176 behaves like a channel strip with the 610B output routed to the 1176LN internally. - Page 11 ON (I) JOIN + 48v SPLIT OFF (0) 610B to 1176 +48V PHANTOM POWER LINK Figure 2: Front Panel center section...
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Page 12: Release Control
1176LN Front Panel (right side) ATTACK RELEASE METER PRE GR COMP Slow Fast Slow Fast ATTACK RELEASE METER UNIVERSAL AUDIO 6176 610B Tube Preamplifier 1176LN Limiting Amplifier INPUT OUTPUT RATIO METER ADJUST INPUT OUTPUT RATIO Figure 3: 1176LN Front Panel Input The 1176LN Input control determines when the compressor receives a signal “loud”... -
Page 13: Attack Control
Output The Output control determines the final output level from the 1176LN. Once the desired amount of limiting is adjusted by setting the Input Control, the Output Control can be used to set the required output level. Set the Meter switch to the Compressor (COMP) position so that the meter reads the desired output level from the 1176LN. -
Page 14: Meter Function
1176LN limiter. When the switch is “down” in the SPLIT position, each side of the 6176 is a separate device with associated in / out connections on the rear chassis. When the switch is “up” in the JOIN position, the 6176 behaves like a “channel strip”... -
Page 15: Fuse
A 200 mA time delay (slow blow) fuse is required for operation at 230 V. Voltage Select The 6176 can operate at 115 V or 230 V. To change the mode, wait 5 minutes after power down, unplug the AC power cord from the rear chassis. Remove the top cover. As shown below, there is a connector that can be plugged in to one location or another location to configure the unit for 115V or 230V operation. - Page 16 Figure 5: Operating Voltage Selector...
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Page 17: History
– mostly of his design – that are still in regular use decades after their development. In 1999 Bill and James Putnam re-launched Universal Audio to reproduce classic analog recording equipment designed by their father and others. In a short time the company has... - Page 18 Counting Crows, Goo Goo Dolls, No Doubt, GreenDay and Jellyfish The 6176 you have purchased carries on the illustrious history of the 610. The 610B circuitry is identical to one half of our 2-610 Mic pre with a few exceptions. We have added a 15dB Pad switch and a power supply modification.
- Page 19 project I'm currently mixing, I'm using both an 1176 and an LA2 on his voice, which is not unusual for me. “The 1176 absolutely adds a bright character to a sound, and you can set the attack so it's got a nice bite to it. I usually use them on four to one, with quite a lot of gain reduction. I like how variable the attack and release is;...
- Page 20 not one of those guys who leaves it on everything, but I'd have to say I've used an1176 on everything at one time or another.” “They have an equalizer kind of effect, adding a coloration that's bright and clear. Not only do they give you a little more impact from the compression, they also sort of clear things up;...
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