Raleigh Audio RAKK dac Mark III Assembly Manual Download

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RAKK dac

Raleigh Audio

K&K Audio

RAKK dac

Mark III

Extreme

Preamplifier

Assembly Manual

Version 1.1

Summary of Contents for RAKK dac Mark III

Page 1: ...RAKK dac Raleigh Audio K K Audio RAKK dac Mark III Extreme Preamplifier Assembly Manual Version 1 1 2010 2011 Raleigh Audio...

Page 2: ...This completed Extreme Preamplifier has a silver face plate and knobs A black faceplate and knobs is available 1...

Page 3: ...onents and assembly Kit version Use this manual with the Extreme Preamplifier Mark III Use the applicable on line manuals for component sub assemblies Required Tools and Supplies 150 to 250 Watt solde...

Page 4: ...tion although any good soldering iron of 40 watts or greater will do There are many soldering stations on the market I have had good experience with the moderately priced Hakko Model 936 If you do hav...

Page 5: ...ack Panel Preparation 11 Side Panel Preparation 12 Front Panel Preparation 12 Panel Assembly 13 Bottom Panel Assembly 13 Back Panel Assembly 16 Front Panel Assembly 22 Final Assembly and Wiring 23 Wir...

Page 6: ...called for provide about four or five twists per inch Twisting wires together will shrink their length slightly so you need to take this into account With a very few exceptions which are explicit inse...

Page 7: ...t but once you get the knack it is quick and easy to do If you don t have a drill handy the old fashioned way of manually twisting the wires works fine I have described how I do it here To make a mult...

Page 8: ...of inputs on the RAKK Input board The lengths here are the maximum expected and may be too long for your unit Trim them to the correct length when you attach the other ends Wire the Outputs on the RA...

Page 9: ...hite wire with the longer black wire and twist them together for about 11 Align the other black wire with the other end of the white wire and twist them together for 3 Go back to the first pair that y...

Page 10: ...re the filament power Make a twisted pair from two pieces of 20 grey wire one 5 long and one 7 long Align the wires evenly at one end Connect the longer wire at the uneven end to pin B1 on the power t...

Page 11: ...6 32 x screw flat washer and Kep nut on each foot Place the washer between the head of the screw and the rubber foot 2 Install one piece of 8 x 1 damping material on the inside of the bottom panel cen...

Page 12: ...ide of the top panel centered between the back of the panel and the vents but closer to the vents so as not to interfere with attaching the back panel Back Panel Preparation The back panel consists of...

Page 13: ...n the inside of the right panel Front Panel Preparation Install the two remaining 2 x 2 pieces of damping material on the inside of the front panel Position them evenly and you may wish to cut one or...

Page 14: ...e four 4mm metric screws Orient the transformer such that the high voltage shorter pins are towards the front of the panel The front of the panel has the lip Dress the white black twisted pair toward...

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Page 16: ...d to transformer pins B1 and B6 Connect this twisted pair to the 6 3VAC pads 4 Locate the red twisted pair that is connected to transformer pins 15 and 17 and has a black wire wrapped around it These...

Page 17: ...ware 1 Install the analog input jacks For RCA jacks position the red washer on the outside of the right jack and the white washer on the outside of the left jack 2 Install the analog output jacks For...

Page 18: ...hell 1 Notice that there is a metal tab adjacent to pin 1 on the XLR jacks Connect a wire between this tab and pin 1 on each jack 2 Connect a 1 twisted pair to each XLR jack Solder the blue orange wir...

Page 19: ...ght to the side and then down toward the solder lug Connect the wire to the tab on the solder lug Solder both ends of the wire Tin the wire by flowing solder over the whole length The hot and neutral...

Page 20: ...in 1 on the XLR jacks Connect a wire between this tab and pin 1 on each jack 2 Connect all of the positive pins together on the left channel jacks The positive pin is pin 2 of an XLR jack and the cent...

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Page 23: ...in place with a drop of adhesive 3 Install the Power on off switch in its location on the right end from the front of the panel using the supplied nut Tighten the nut snug but be careful to not over t...

Page 24: ...green wire close to the chassis and connect it to the chassis pad on the Active Output 2 Dress the 26 loose green wire close to the chassis and toward the front of the bottom panel 3 Dress the power c...

Page 25: ...Wire 12V Power 5 Dress the 11 yellow wire close to the chassis and connect it to the 12V pad on the Active Output 24...

Page 26: ...put board to the left Line Input pads on the Active Output Connect the blue wire to the L pad and the black wire to the L pad Wire the Outputs 8 Connect the orange black twisted pair from the right ou...

Page 27: ...Wire the Bottom Panel to the Front Panel Lay the front panel down adjacent to the bottom panel where it will be installed Trim the lengths of the wires as needed in the following steps 26...

Page 28: ...e to the tab extending from the switch wafer closest to the front panel Connect the associated black wire to the com pad on the board closest to the front panel Connect the orange wire to the tab exte...

Page 29: ...d to the two terminals closest to the end of the switch and the other wire will be connected to the two terminals closest to the center of the switch 3 Locate the 20 black twisted pair that is an exte...

Page 30: ...astic covers from the studs now The stud in the center bottom of the front panel fits into the hole in the lip of the bottom panel Secure the panel with a 6 32 KEP nut on the center stud only finger t...

Page 31: ...the center 9 Plug the ribbon cable into the connector on the RAKK Input board such that the cable goes toward the center of the board The cable may be folded back upon itself so that the cable will ex...

Page 32: ...three screws securing the back panel to the bottom panel 2 Align the surface of the back panel with the edge of the bottom panel 3 Make sure that the left and right edges of the back panel align with...

Page 33: ...ng the top of the side panel left or right as is necessary to make the holes in the top panel align properly with the holes in the side panels Secure the back side and bottom panels 1 Install nine scr...

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Page 38: ...ft B Measure the voltage across the 20K resistor R27 and adjust potentiometer R34 for 200V across R27 4 Adjust the Right B Measure the voltage across the 20K resistor R26 and adjust potentiometer R30...

Page 39: ...trol have 6mm shafts while the select switch has a 6 35mm shaft Therefore the knob for the select switch has a slightly larger hole than the other knobs 3 Apply optional labeling tape to the front pan...

Page 40: ...arts are provided e parts are provided Chassis and Front Panel Parts Chassis and Front Panel Parts Part Description Qty Chassis set Top bottom front back frame two sides 1 Foot Damping black 4 Damping...

Page 41: ...1 Wire List From this twisted pairs and individual pieces are called out in the individual assembly steps Twisted wires are best made using a small electrical drill to do the twisting Between 4 and 5...

Page 42: ...nut with star washer 9 Nut 4mm machine nut 1 Washer 6 32 flat washer 4 Ground lug 4mm 1 Wrench Hex 5 64 for 6 32 screws note 1 Wrench Hex 1 16 for 4 40 screws note 1 Wrench Hex 1 5mm for knobs 1 Wrenc...

Page 43: ...42 Document version history Version Description 1 0 Original document 1 1 This document update power wiring...

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