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A N K I T S

the authority in high end

audio kits

Kit1 300B

2014 Edition & Kit1-10 C-Core

Single Ended Monoblock Power/Pre Amplifier 8.5W 300B 

Construction Manual & User Guide

Version: September 2014

Summary of Contents for Kit1 300B

Page 1: ...A N K I T S the authority in high end audio kits Kit1 300B 2014 Edition Kit1 10 C Core Single Ended Monoblock Power Pre Amplifier 8 5W 300B Construction Manual User Guide Version September 2014 ...

Page 2: ...of 3mm aluminum which has been powder coated black the chassis is ultra sturdy and aluminum is an ideal material for audio If you ever need to drill the chassis its easy to drill through Here you can see the underside of the chassis and this is the position you will be working on the kit most of the time ...

Page 3: ...2 Grommet Installation Install the 5 smaller grommets in the 5 holes that are wide Install the three larger grommets into the 3 larger holes ...

Page 4: ...Lets install the 8 pin rectifier valve base Find the KEY between pins 1 8 and make sure this points to the center of chassis Feed the valve base in from under the chassis and secure with the mounting bracket and 2 black M3 10mm countersunk screws ...

Page 5: ...alled Now lets install the 4 Pin valve bases in the center of the chassis READ CAREFULLY BELOW before you start IMPORTANT Note that each 4 pin valve base has two small holes and 2 larger holes the larger holes are for the FILAMENT Pins make sure these are on the OUTSIDE FILAMENT PINS ...

Page 6: ...hex standoffs in the center of the underside of the chassis as shown in the above pic this is the mounting for the tag strip that we will install later for all the hardwiring Use the 2 x M3 10mm hex standoffs and 2 M3 6mm countersunk screws that screw in from the top side of the chassis ...

Page 7: ...6 Filament stand offs and tag strips stand offs Now install the 4 10mm hex standoffs in the position as shown above and secure with the 6mm M3 countersunk screws from the top of the chassis ...

Page 8: ...e Front insert plate The two tang strips will require just 3 M3 x 10mm black countersunk screws and 3 M3 nuts to secure into position Position the TANG strip in the chassis as shown in the next picture and then secure one of the 3 holes from the chassis with the tang strip see next photo s ...

Page 9: ... as shown with the PEMS faced up see below Used Black M3 CounterSunk screws and an M3 Nut to secure but a good tip DO Not tighten them keep them loose so they have some play only tighten once the insert plate is installed later on in the build ...

Page 10: ...9 Tang strips installed ...

Page 11: ...f hands would be useful although you can do it on your own if you follow the guidelines Itʼs a good idea to read through the next few pages a couple of times so you understand the process Get the rubber strips out of Chassis Kit Bag and position on the Chassis as shown above Below you can see the Mains transformer T 199 ready ...

Page 12: ...Now the Mains transformer Look for the T 199 code on the bottom of the transformer and position beside chassis as shown Position the Transformer on its side with the small set of wires Primary on the LEFT ...

Page 13: ...12 Now put the wires through the first grommet Now on the secondary divide the wires up into two sets each set being approximately 9 or 10 wires on each side divide them equally ...

Page 14: ...13 Wire the first set through the grommet Position the wires in the other grommet ...

Page 15: ...14 Now stand up the chassis and continue pulling the wires through the chassis Might be a good time to have a second set of hands Patience Patience ...

Page 16: ...s Use the M4 Fender washer and screw on the top of the transformer and the serrated washer and nut on the bottom of the chassis A good tip is to just get the nut on for now and later when the chassis is upside down with the Mains in position you can remove the nut and add the serrated washer its sometime very tough with just two hands to install the serrated washer and nut while screwing from the ...

Page 17: ...16 Congratulations Mains transformer installed Choke Installation In this section we will be installing the CHOKE transformer which is labelled CH 165 on the bottom ...

Page 18: ... you can see the CH 165 in the bottom right hand part of the pic above Follow my tips for a painless install In the Choke hardware bag you will find M4 10mm PAN screws along with an M4 Standoff and M4 washers ...

Page 19: ...is as shown with some books to hold up the LEFT side of the chassis and then get a paper back book to support the CHOKE transformer in position as shown With the choke in position feed the 2 choke wires through the grommet as shown above ...

Page 20: ...ew and washer and insert through the top of the choke through the chassis Now on the inside of the chassis in view above use the M4 standoff to screw down onto the M4 screw that is protruding through see next pic for clearer view ...

Page 21: ...offs are securing the CHOKE transformer to the chassis Just to make sure that the screws are positioned correctly you can place the Power supply board over the screws temporarily to check that all is well Well done CHOKE is now installed ...

Page 22: ...st main section of the Mechanical install we will add the two output transformers They can be identified by the OP 300 designation on the bottom Position them beside the chassis below and note the wires red and black facing each other ...

Page 23: ...22 Now thread the wires through the grommets as shown above and below ...

Page 24: ... serratedʼs in order to install the output transformers Feed the 10mm pan screw with flat washer through the transformer and into the chassis and then secure with serrated washer and M4 nut on the underside of the chassis facing you1 Transformers installed ...

Page 25: ... kit basically All the transformers are installed and we can start working on the circuit boards hardwiring of the 300B section the filament board and the IEC rocker section Let start with the IEC rocker section where we will use the primary windings of the Mains transformer ...

Page 26: ...range white 400 400 taps for rectifier tube 15 center taps from Mains connect to GND 16 prepared ground cable from W2 on PS PCB to chassis ground 17 filament for 5U4G power supply connection to W3 18 GND connections 19 20 300B DC filaments 21 Output transformer primary wiring 22 Choke connection to PS PCB 23 300B Grid Connections from Driver board to 300B Hardwiring area 24 Voltage Checks 25 Input...

Page 27: ...W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U4G Mains Primary Mains Secondary Overview of Kit1 layout Chassis GND IEC Section AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 28: ...300B Hardwiring Section 1K8 Resistors 220uf CAPS 1K Grid resistors A B C D E F G H I J K L M N ...

Page 29: ...300B Hardwiring Section PS GNDS FILAMENT WIRES PS GND A B C D E F G H I J K L M N From Filament Board From Filament Board ...

Page 30: ...300B Hardwiring Section O P tx red wires connected COMPLETE w Voltage Checks for Power on with tubes installed PS GND A B C D E F G H I J K L M N 70v DC 70v DC 425v DC 425v DC ...

Page 31: ...8 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U4G Mains Primary Mains Secondary Overview of Kit1 layout Chassis GND IEC Section AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd Hardwiring section details not shown for clarity ...

Page 32: ... W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Power Supply Driver Board Wiring This is the HT voltage for the driver tubes AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 33: ...9 Mains Transformer W23 W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 34: ...9 Mains Transformer W23 W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 35: ...9 Mains Transformer W23 W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 36: ... W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Brown wires from Mains Secondary Filament Supply for the 6SN7 tube AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd 7 ...

Page 37: ...1 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Connect the filaments between the two 5687 tubes AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd 8 4 4 8 ...

Page 38: ...r W23 W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary 5687 Filament supply from the Mains AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 39: ...W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary 1 High Voltage to to the Rectifier Tube Orange White AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 40: ...1 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary High Voltage to to the Rectifier Tube Brown White Blue White connect to GND AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 41: ...W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary High Voltage to to the Rectifier Tube prepared Ground cable AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 42: ...W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary High Voltage and yellow filament supply for 5U4G along with the power supply board connection AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 43: ...N7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Ground Connections 3 grounds used to connect from Power supply to tag strip and driver board AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 44: ...15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Ground Connections violet green yellow AC Filament supply to filament board AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 45: ...15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Ground Connections Blue Black wires AC Filament supply to filament board AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 46: ...W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Output transformer primary connecting to the 300B and the Power supply Ground AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 47: ...3 W22 W21 W20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Choke Wires AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 48: ... 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Choke Wires Driver board output to 300B tubes purple wire Choke connections to the Power Supply Board AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 49: ...W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB W6 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Choke Wires PS VOLTAGE CHECKS 375v DC 395v DC 450v DC 375v DC 395v DC AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd A B C D E F G H I J K L M N ...

Page 50: ...20 W11 W4 W14 W18 W15 W19 6SN7 1 1 1 8 w8 w7 w6 W5 W3 W13 W2 W28 W27 W26 W25 W24 W23 W22 W21 GND W14 W20 PS PCB 1 2 8 3 4 5 6 7 5U5G Mains Primary Mains Secondary Choke Wires AN A cable connecting from RCA to input driver board AC 1 AC 1 AC 2 AC 2 gnd DC DC gnd ...

Page 51: ...Prepared Cable Black wire twisted from Mains primary White wires twisted from Mains primary Prepared cable 120v operation ...

Page 52: ...www ankaudiokits com email audionotekits rogers com sales sales ankaudiokits com telephone USA 613 822 7188 international 001 613 822 7188 ...

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