Related Manuals for UTA UNFa-1
Summary of Contents for UTA UNFa-1
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Page 1: Table Of Contents
UT A UnderToneAudio UNFa-1 User Manual Version 1.0 1. INTRODUCTION 2. SAFETY/POWERING UP 3. RACK MOUNTING 4. AUDIO CONNECTIONS 5. FRONT PANEL CONTROLS 6. EXPLANATION OF FEATURES 9. SPECIFICATIONS... -
Page 2: Introduction
The UNFa-1 is a collection of new features, some of which I always knew I wanted on the Un- Fairchild and some of which I discovered I wanted on the UnFairchild after years of use. I always... -
Page 3: Safety/Powering Up
2. SAFETY/POWERING UP SAFETY I NSTRUCTIONS WARNING: T o r educe t he r isk o f f ire o r e lectric s hock, d o n ot e xpose t his product ... - Page 4 12. Do n ot u se t his d evice w ith w all o r c eiling m ounts n ot s pecified b y t he m anufacturer. 13.
- Page 5 The spare fuse is a T0.4A fuse for 110 V operation. If the UNFa-1 blows a fuse, it is best to first try to determine what caused the fuse to fail before installing the spare.
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Page 6: Rack Mounting
3. RACK MOUNTING The UNFa-1 is a Class A device. Class A circuitry unavoidably generates heat. How one chooses to rack-mount these devices can have a significant affect on the ambient temperature inside the enclosure. We have done everything we can (short of using a fan) to improve the thermal performance and we have put them through “worst case”... -
Page 7: Audio Connections
DB25 UNFAIRCHILD INTERCONNECT - Connect the DB25 end of the provided “UnFairchild Interconnect” snake to the DB25 connector on the back of the UNFa-1 unit. All 8 of the XLR connectors on the other end of the “UnFairchild Interconnect” snake needs to be plugged into the corresponding inputs and outputs on the back of the UnFairchild 670M mkII unit. -
Page 8: Front Panel Controls
5. FRONT PANEL CONTROLS FB/FF HP FREQ OUTPUT UNFa -1 BYPASS 12 12 12 12 DESCRIPTION OF FRONT PANEL CONTROLS 1. POWER SWITCH - This switch power the unit on and off 2. POWER LIGHT - This light is illuminated when the unit is powered on. 3. - Page 9 8. BYPASS - These toggle switches allow you to bypass the MIX and OUTPUT processing done by the UNFa-1. These bypass switches only bypass the processing done by the UNFa-1 and do NOT bypass the processing done by the UnFairchild 670M mkII. If you want to bypass the compression entirely, you have to use the bypass setting on the unFairchild itself.
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Page 10: Explanation Of Features
6. EXPLANATION OF FEATURES THE FB/FF CONTROL We added the FB/FF control so you can get the full benefits of applying Feed Forward (“FF”) compression to the UnFairchild circuit. FF compression is a wonderfully aggressive sound but can be a bit unwieldy at times. Being able to blend the Feed-Forward (“FF”) signal with the Feedback (“FB”) signal allows you to add just the right amount to get that amazing aggressive sound without having the compression fall of a cliff of over compressing. - Page 11 Turn up the UnFairchild “GAIN TRIM” control on the side that sounds more compressed by .5dB and then turn down the “Output” control on the UNFa-1 .5dB (1 click) to match the level. Listen again and see if the two sides are better matched.
- Page 12 If you like Feed Forward compression and M/S processing the benefits are obvious... You’re welcome. It is important to know that both the UnFairchild AND the UNFa-1 need to be in M/S modes for this to work. The M/S and AVG modes are mutually exclusive. When you engage the M/S mode the AVG mode is bypassed.
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Page 13: Specifications
8. SPECIFICATIONS INPUT VOLTAGE 110-120/220-240 VAC, 60/50 Hz MAINS FUSE 110V T 0.4 A 240V T 0.2 A MAXIMUM POWER CONSUMPTION 25 W INPUT IMPEDANCE LINE INPUT OUTPUT IMPEDANCE LINE OUT 47Ω FREQUENCY RESPONSE LINE IN/OUT 10 Hz - 50 kHz +0 /-1 dB NOISE FLOOR LINE IN/OUT -91 dBu (20 Hz - 20 kHz)
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