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Soldering Instructions - Custom O2+ODAC| Document Revision 4 

 

 

 

 

 

 

Pg. 2 of 7

 

Standard Headphone Jack 

Install audio jack at J3. 

 

1/4in (6.35mm) Headphone Jack 

1.

 

Begin by installing resistors 

R10 

and 

R11 

on the bottom surface of the PCB.  

2.

 

Bend leads of capacitors C8 and C9 and cover with heat shrink as shown in Figure 1.  

3.

 

Install 

C8 and C9

, then complete remaining assembly of O2+ODAC.  

Remember to omit J3. 

 

 

4.

 

Connect about 3" of wire from Neutrik 1/4in headphone jack to P2. Wire as shown 

below (L = White, Red = Right, Black = Ground): 

 

  

 

 

Attach headphone jack to front plate after completing all other assembly. Black nut is 

secured by a compression fit. With jack & nut installed on front plate, use table surface 

to apply pressure to nut. After nut snaps in place, gently rotate 1/4 turn clockwise.

 

 

Summary of Contents for Custom O2+ODAC

Page 1: ...stomization J1 Power jack J2 3 5mm input jack J3 3 5mm headphone jack When installing a 1 4 headphone jack also note that special assembly is required for R10 R11 C8 C9 Front Power Jack Install power jack at J1 Rear Power Jack 1 Omit J1 Install an isolated power jack onto required rear plate Connect black wire to longer lead and white wire to shorter lead Solder to J1 pins as shown 2 Apply hot glu...

Page 2: ...hrink as shown in Figure 1 3 Install C8 and C9 then complete remaining assembly of O2 ODAC Remember to omit J3 4 Connect about 3 of wire from Neutrik 1 4in headphone jack to P2 Wire as shown below L White Red Right Black Ground Attach headphone jack to front plate after completing all other assembly Black nut is secured by a compression fit With jack nut installed on front plate use table surface ...

Page 3: ...nner traces beneath J2 see image at right Dedicated 3 5mm DAC line output 1 Install audio jack at J2 2 Solder J1 and J2 on bottom of ODAC 3 Solder 3 5mm jack to ODAC like Standalone ODAC 4 Cut inner traces beneath O2 input jack J2 See page 2 5 Solder Red Black White wire from bottom surface of J2 Pass wire through holes of O2 and ODAC to solder to LINE OUT These pins are normally used for RCA jack...

Page 4: ... J2 on bottom of ODAC 3 Mount RCA jacks onto required rear plate using paper washers 4 Solder about 4 of wire from RCA jacks to ODAC as shown below 5 Cut inner traces beneath O2 input jack J2 See page 3 for picture 6 Solder Red Black White wire from bottom surface of J2 Pass wire through holes of O2 and ODAC to solder to AUDIO_OUT as shown ...

Page 5: ...e2 input 2 Mount RCA jacks onto required rear plate using paper washers 3 Cut inner traces beneath O2 input jack J2 See page 3 for picture 4 Solder Red Black White wire from bottom surface of J2 Pass wire through holes of O2 and ODAC to solder to ODAC s L R GND holes 5 Wire RCA jacks directly to Headphone Jack a For 3 5mm Headphone Jack ...

Page 6: ...Soldering Instructions Custom O2 ODAC Document Revision 4 Pg 6 of 7 b For 1 4 Headphone Jack Must use Neutrik NJ5FD V ...

Page 7: ...DAC Document Revision 4 Pg 7 of 7 Standard Gain R17 and R21 Default 1 kΩ R19 and R23 Default 274 Ω Medium Gain 1 0 and 3 3x R17 and R21 NONE R19 and R23 634 Ω Low Gain 1 0 and 2 5x R17 and R21 NONE R19 and R23 1 kΩ normally R17 and R21 ...

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