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Panel
bgColor#f0f0f0
Status
colourGreen
titleSTATUS
finished

Released 11/2013 

the buildguide is only for rev.1 - check for TTSH rev.2 this PAGE rev3 here

last Modification Date: 20.June 2017 - Voltage processor TL071 instead of LM301

BOM from me: BOM TTSH modified rev.1

Dokumentation: http://thehumancomparator.net/building/

Schematic: TTSH-schematics.pdf (also avaiable on zthees webserver)

PCB reference designators: TTSHcompplc.zip thx to http://tauntek.com/TTSH.htm

Muffwiggler Forum infos: (first page) http://www.muffwiggler.com/forum/viewtopic.php?t=98954&postdays=0&postorder=desc&start=2130


Status
colourRed
titleATTENTION

 wiring from PSU to the module headers are wrong "silkreen error"  +/-  must crossed - doublecheck before power up modules,

you find other issues in the second tab here

 


Please read Buildings tips and known Issues site to save time and money.

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optional parts from VCO bleed fix (caps) 


Expand

BOM page own:

this modified BOM is for TTSH  rev.1  (sale from December 2013) 


Here is the Original BOM from the great TTSH (Arp2600 clone)

 


Mouser cart

https://de.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=4998691276

please add:

  • 1x Powerswitch 633-CWT12AAS1
  • 1x BC558 (in sum 9 )

 


some missing parts like Transistors, ICs, Reverb Spring, PSU, connectors, jacks and many more:

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further please read careful Jons building guide for VCF - there is a issue with matched pair 2N3906 - silkscreen error etc - check here

  


AR/ADSR

 


VCA

for testing: test with probe a VCO (need +15V cable see VCO testing above)

feed the VCO signal to the VCA and check the waveform with a oscilloscope.

            

 


Ringmod, Preamp, Envelope Follower

 


Mixer

Don´t solder the pot, switch, jacks - the frontpanel dont match with the Partposition yet.

 

 



  

Noise, Voltage Processor

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leave out the 2n5172 - use a bc337/16, - bend right leg to top, solder a 10K resistor in series to the 1uF cap. 


 

 



Change in the voltage processor section the LM301 for a TL071 and dont assemble the 30pf capacitor. (its only one IC to be changed)

 


first Panel mounting test

 


S/H - Clock - Noise


Warning
titleWarning

Due to some issues from the clock LED driver - we bridge the 2n5172.

see here: http://thehumancomparator.net/modifications/


   

 

 



All Parts soldered, Panel mounted, need to solder the jacks.

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you have to switch with a jumper the T/TN  or R/RN header, otherwise your Amplifier dont have a audiosignal.


 


Tip
titleBuilding Tip

place each row of faders on PCB and solder 2 pins, place the Panel in right way and mount all screws,-- solder the Faders complete.

remove the panel and plug all jacks in position, place the panel - mount all screws and few jacks with screws - turn the device, solder the jacks.

solder the LED at last.

Use on all sides spacers, for a faster panel un/mounting use spacers (with plastic/silicon washers) instead of screws and you can turn the panel on table without breaking some faders.

 

 

 




 

 



 


Tip

If  your NOISE leds and left Volume led dont work.., connect the 470r resistor near  amp/noise to the unlabeled solder hole (ground)

its a grounding issue by removing the 10R and cap in power section due to hum issue (described in next step)

 


 

 



Tip

HUM Issue:

by using of both amplifiers for integrated speakers i had massiv hum, by touching the panel the hum sound changes. (hum is only in speakers not in main out)

a workarround from zthee,  was tested by me - it helps.

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use RG174 cables or shielded microphone cable for offboard wiring.

 



for testing .. 


Planned Case:

 


Finalcase..