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Project

Projecttitel: Balanced Driver

Status: DONE

Startdate: 03/2020

Duedate: 03/2020

Manufacture link: this page

Shop Link:   diysynth.de - https://www.diysynth.de/pcbs-panels/Balanced-Driver-PCB.html


This Module was designed for my private usage, to install it in some Arp Clones like the TTSH or in old vintage gear.

the 6.3mm Connection is optional, the Signal output is at the TRS 3pol MTA header available for XLR Connections too.

the Circuit is Phantom power protected.

the benifits are symmetricial outputs with an bigger headroom and for situations with long cables or problems with EMV..


for TTSH Users: the TTSH isn´t a true Stereo Device, one of this PCB is fine for your TTSH.



 

BOM:

Download Version: balancer.xlsx


Mouser Project

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=c5113c803c


BOM  Textversion 1.01 (same as above  xlsx Version)


version 1.01Balanced Driver output.







March2020



























IDNameDesignatorFootprintQuantityManufacturer PartManufacturerSupplierMouseralternative
1THAT1646PO8-UU2DIP81

Musikding, mouser887-1646P08-U594-K101J15C0GF53L2
2100pC6,C7RM22

tme, mouser505-FKP0D001000BKSSD 
3FERRITEL1,L2RM102


623-2743001112LF
4100uF optionalC1 RM2.51100uF 35V 6.3*11



5100nC4,C5RAD-0.12


594-K104K15X7RF53H581-RDE5C1H104J2K1H3B
61N4001 - 1N4004D1,D2,D3,D4DO-414


621-1N4001
710ufC8, C9RM5 - RM2.5 fits too2nichigon or Wurth

710-860020672010
8AMPHENOL ACJS-MHDR #888P2AMPHENOL ACJS-MHDR #881Amphenol

523-ACJS-MHDR
9MTA-100 header 2.54mm rak 3-polH1MTA-100 1X3 2.54MM1TE-Connect.TE ConnectivityElectrokit640456-3
10MTA100 header 5polCN1MTA-100-5V1TE-Connect.

640456-5
11MTA 100 jack 5polCN1 jackRm2.541TE-Connect.

3-641190-5
12MTA 100 jack 3polH1 for optional XLR connectionRm2.541TE-Connect.

3-640443-3
13IC socket 8pin milledfor U2
1


575-144308
14screws, washer, nuts optional






1510uF BIPOLAR capacitorC2, C10RM5, Rm2,5 fits too2


667-ECE-A1EN100UB

note: you dont need the 6.3mm jack on the pcb - you can also use the TRS H1 header for jacks or XLR















Buildguide


nothing special.. just install the parts.. and solder everything

before you start:

the C1  100uF capactitor is optional - jumper the pins as seen in the above picture.

when you only use XLR - use only the TRS (3pole MTA100 connector)

when you only want the 6.3mm connection - don't install the TRS header

make sure you install in C2 and C10 the BIPOLAR electrolyte caps   (C8 and C9 is polarity sensible)


Pinout:

pin numberfunction
-Vnegative Power input from -12V thru -18V
+Vpositive Power input from 12- 18V
AIN analog unbalanced input from your audio source
GND pads

ground for voltage (one pad with ground is fine)

in some devices you have to ground the chassis with the GND pads too (in case you have hum issues from the circuit, but make sure you don't have a ground loop)



TRS header

balanced output !!

T = Tip

R= Ring

S= Ground/sleeve