TTSH rev3 buidling guide

Table of Contents

open tasks:

• LED-man  add a trusted builder list  (please contact me if you want listed here as trusted builder)
  

Trusted Builders:

BOM: (Bill of material)

The shared mouser basket from thehumancomparator is wrong (22.Dec.2016)
(this Mouser basket was provided in the 'order' eMail)
https://www.mouser.de/ProjectManager/ProjectDetail.aspx?AccessID=234c0 9ed60

delete the following parts from your mouser basket:
652-SRN6028-101M
710-744290321
these chokes/filters aren´t needed in rev.3 

Printable BOM as listed, (rev.2 plus additional list for filter and psu)

ttshv2BOM.pdf (mainboard pcb)

4027v2BOM.pdf (vco boards)

TTSHrev3_SecondFilter_BOM.pdf (filter board)  please use matched pairs 4 pairs of 2N5087 and one pair 2N3906.

dont miss to order:

Speakers: Visaton SC8

reverb tank https://www.banzaimusic.com/Belton-RBL2AB3C1B.html  see known issues for wiring 

RCA/Chinch cable 0,5m - 1m

DC Powersupply 24V/1A DC

Cable for Power wiring and Speaker wiring

13 x 12mm Spacer M3, Screws, washers, nuts, cable shrink, silicon for matched pairs or glue the trannys together

known issues:

1. Powersupply Board - turn the 2pol MTA156 header if needed - otherwise the power input cable is above the powersupply.    confirmed
   
2. Main board – Missing trace from V- to header. (copyright of picture for thehumancomparator.net )
   
3. 4072 VCF missing trace pin 4 on LM1458 to -14V (use shrink tube for isolation)
   
4. 4012 VCF Board — BC558 must be installed backwards    not approved, but schematics show Ermitter to 23k2 resistor in rev.7.2 (v2)
5. for all 2N3958 and 2N3954 change 2 pins like this,  cross the both pins - use shrink tubing for one pin for isolation.
   
   
   
6. For the Filtercards use flat electrolyte capacitors, check the hight of all parts - if needed use other headers, check this for both Filtercards before you solder the headers, if needed place the 47pf(50pf) MLCC capacitor (on the mainboard) on solderside of the pcb)
   on my first build i used a 10mm spacer but i prefer the usage of 12mm spacers,  (by usage of 2 spacers - its needed to cut on the VCF out jack at the bottom some metal and you need a flat screw,  in result one spacer is enough   )
   
   
   
7. by usage of the banzai reverb tank, run in the reverb tabk a wire from ground to ground on the RCA connectors to ground output and input

buildguide:

This guide is for users with experience in SDIY, you need a scope and a frequency counter, DMM/DVM/LCR-Meter)

i dont share infos about polarity of capacitors, this basics skills are required, otherwise feel free to ask me for a assembly service. (check the trusted builder list)

please use a fume extractor.

its needed to solder 6 SMT caps in 0805 format and 2 SMT power regulators.

this guide is a best practice guide, i´m not responsible for failures/malfunctions/defects.

1. lets start with the powersupply board - add all needed parts on the pcb, start with the two SMT power regulators.
   there is one missing part (a dual choke) - please use wire links here or resistor legs
   turn the 2 pol MTA header as described in the picture
   if needed - wash the pcb carfully on the solderside
   testing/trimming: use a 18-24V DC powersupply for input and set the output to 15V/-15V by usage of the both trimmers
   
   
   
   
2. Mainboard PCB - place all IC-Sockets ( tin one ic socket from top, place the ic socket and heat the ic socket pin - the socket drop in place
   on the rear side of the PCB is for the LED driver a ic socket - we dont use this one - dont solder a ic-socket here ! see step14
3. best practise - begin with the "most use values" and end with the value range Mainboard PCB - start with 100K resistors, 10K, 1K, 1M, 100R (reverb), 10R (Amp) 10M (top right)
   if done - 47k, 4k7, 470K, 4M7, –   22K, 220K, 220R, 2M2, 33K, 3M3, 330K... — 30K1, 680R, 68K, 68K1, 680K...  ..... and all other
   please remember: on solderside are few resistors too - on VCO 4027 boards and filter boards too - its your choice to leave it for later or assembly it yet too (i prefer later)
4. Mainboard PCB - place all rectifiers 1N4148
5. solder from top all parts
6. cut the resistor and rectifier legs from bottom side
7. place all MLCC caps and solder from top
8. place all polyester/polypropylen caps - bend the legs from top
9. add all transistors in place and solder one pin from top -(except the 2N3954, both 2N3958 - if you cant test this, use a milled IC-socket and cut the pins out - use this as socket)
10. turn the pcb and solder all pins. (no switches, no fader, no jacks, no pot, no trimmers)
11. you find on solderside few resistors - but take a look at step 14 - you don´t need the 3 resistors for the LED driver ( LEDs works too)
12. wash the pcb 2-3 times if needed, i use Ispopropylen alcohole
    - make a breaktime/pause yet - the pcb needs time to dry
13. if you dont need a breaktime/pause - assembly the filterboards and 3 VCO 4027 boards - wash the pcbs too, make sure you use flat 10uF electrolyt capacitors, use c0g, polypropylen or silvamica for the 680pF cap,  don`t mount the connectionsheaders yet
14. on the PCB solder side, there is ic socket for the LED driver (near the multiples) its needed to bridge with a resistorleg the middle pins
    
    
15. Mainboard pcb: its time to add all other parts on the pcb -  i prefer multiturn trimmers for the VCO V/oct trimmers  20K or 25K, but remember this can´t mounted on the frontpanel pcb side due to sizing, you have to open your TTSH for trimming the VCOs,   begin with trimmers, faders - for faders keep attention on correct pcb side,  best practise for faders:  turn the pcb upwards on your desk add 4 faders in place, one hand holds the faders with other hand bend the faderpins with a flat screwdriver,  solder all faders,  add the Gain pot on top and solder them.
16. add the header/sockets for VCOs, Filtercard - best practise: mount each header in socket - put them in place on the pcb - add the vco pcb on top and solder at first on top (sub vco pcb to header)  not the header to mainboard pcb.
    then start the soldertask for the other side.
17. check on your pcb other parts:  you need to assembly few 2pol, 5pol MTA headers (gate/trigger/power) solder in the RCA jack for reverb, you have to add a 3 pol MTA header to powering the optional Gatebooster and/or TTSH sync board , on each section you find 6 pol holes.
18. now its nearly done - doublecheck all solderpoints, missing resistors,caps..
19. add the 13x 12mm spacers for speaker to pcb, dont fix it very strong - we need to align this in step 22
20. you find on the pcb on left bottom near the speaker hole switch adapter pcbs, cut them out and place they behind the switches
     
21. setup all 81jacks in place, don`t solder the jacks yet
22. place the frontpanel on the pcb/spacers - fix it with screws - if needed align the spacers
23. add on each corner a washer and nut to a jack and at the bottom/near of the voltageprocessor
24. at this time you need four hands if possible.. to turn the pcb without loosing jacks
25. solder at first the jacks from step 21
26. check the switch posistions, align it and solder 1-2 pins (middle pins), check again the positions, if needed correct it.
27. if the alignment of all parts are fine, solder all swicthes and jacks
28. if needed clean with eartips and isopropylen the solderpoints
29. add the 3 VCO 4027 modules and one filtercard in place.
30. time for wiring: speakerwiring/headphone,
    
    1. Wire first to headphone jack, then to speaker. 
       For the left amp :
       Connect pad L to tip pin, connect switching tip pin to left speaker. Connect GND pad to speaker. 
       For the right amp :
       Connect pad R to ring pin, connect switching ring pin to right speaker. Connect GND pad to speaker.
       And finally connect sleeve pin on jack to ground somewhere on board. (external gate ground is good choice)
       So when headphone is inserted it breaks the connection to the speakers.
     
31. unmount the panel,  add 3 long spacers (20-50mm to the 3 holes near voltage processor - the stands are used for the powersupply yet - mount the psu pcb on top), remount the panel
32. wire the powerswitch between + line and the powersupply pcb input
33. for power between powersupply and mainbaord  - doublecheck the polarity,
34. testing and trimming later here  or check http://thehumancomparator.net/wordpress/instructions-ttsh-trimming-instructions/

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