UTA UNFa-1 User Manual Download Page 6 | Manualshive

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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” rack mounting scenarios to make sure that they will perform reliably under those conditions.

WE STRONGLY RECOMMEND LEAVING A GAP BETWEEN THE UNFa-1 AND THE UNFAIRCHILD MOUNTED

IN A RACK TOGETHER. It will ensure longest possible healthy function of both devices.

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Summary of Contents for UNFa-1

Page 1: ...Fa 1 User Manual Version 1 0 UTA UnderToneAudio 1 INTRODUCTION 2 2 SAFETY POWERING UP 3 3 RACK MOUNTING 6 4 AUDIO CONNECTIONS 7 5 FRONT PANEL CONTROLS 8 6 EXPLANATION OF FEATURES 10 9 SPECIFICATIONS 13 1 ...

Page 2: ... a unit that is already on the very high end of the world of high end audio gear I didn t want people paying for features that they might not want or never use and were never on an original Fairchild The Feedback Feed Forward blend control is something I discovered in my travels with the Un Fairchild 670M mkII as I explored using it on absolutely everything It is by far my favorite of the new feat...

Page 3: ...fluid on the device 5 Vents are provided for heat dissipation on the sides and the rear of the device Maintain at least 2 5cm space around these vents to provide sufficient ventilation 6 Keep the device away from sources of heat and open flame such as heaters radiators stoves lit candles etc 7 Make sure the power cord is intact before plugging it into the device Do not use cords with visible damag...

Page 4: ...40VAC operation packed separately Open the fuse drawer on the AC receptacle on the rear of the device and replace the T 0 4A fuse with the T 0 2A accessory fuse 4 In the fuse drawer change the AC Mains switch from the 110V position to the 240V position 5 Assure that the fuse drawer is secured closed before attaching the power cord INSTRUCTIONS POUR 220 240VAC FONCTIONNEMENT 1 Avant de commencer dé...

Page 5: ...h is in the OFF or OUT position Plug the supplied IEC AC power cable into the AC power receptacle on the back of the unit Plug the other end into an appropriate grounded AC outlet You are now ready to power up the unit Simply push the power switch on the front panel to the ON or IN position When the UNFa 1 is powered on you will see the the red LED illuminate This indicates that the UNFa 1 is powe...

Page 6: ...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 rack mounting scenarios to make sure that they will perform reliably under those conditions WE STRONGLY RECOMMEND LEAVING A GAP BETWEEN THE UNFa 1 AND THE UNFAIRCHILD MOUNTED IN A RACK TOGETHER It will ensure longest possible healthy function of both devices ...

Page 7: ...FAIRCHILD 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 Back of UNFa 1 Back of UNF 670M II 7 Serial UnFairchild Interconn...

Page 8: ...hild must be turned on for these features to function 4 FB FF These rotary switches control the blend between Feedback and Feed Forward signals going to the side chain inputs When the control is fully counterclockwise the side chain input will receive 100 Feedback signal When the control is turned fully clockwise the side chain input will receive 100 feed forward signal When the controls are in th...

Page 9: ...rchild can sound really good when pushing A LOT of level through it By reducing the output level you can get the benefits of pushing a lot of level without clip ping the input of whatever device comes after it 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 ...

Page 10: ...ul when compressing a drum mix If you like A LOT of kick drum in your drum mix and are compress ing the overall drum mix the compressor will mostly just be compressing the kick drum hits and make it impos sible to maintain the level of the kick drum in the drum mix Simply turn up the HP FREQ control to the 83 to 113 range until the compressor is equally compressing both the kick and snare in the m...

Page 11: ...ght sides not matching perfectly then listen to each side individually and determine which of the two sides sounds more compressed 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 You can repeat again if the same side is...

Page 12: ...m pression 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 ...

Page 13: ...UT 25K 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 MAX LEVEL BEFORE CLIP LINE IN OUT 27 dBu or better DISTORTION LINE IN OUT 005 at 27 dBu DIMENSIONS FRONT TO BACK 12 25 WITH HEAT SINKS and KNOBS 14 LEFT TO RIGHT 17 25 WITH RACK EARS 19 WEIGHT ACTUAL 12 lbs SHIPPING 15 8 lbs ...

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