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Rdc+1

1k PNPBJT

Rdi104

2k2

T1

P

Rpp103

1

Cpp101 470µF/100v

option 2c (WIMA)

Cdi102*2c

1µF/50v

Cdi103*2c

1µF/50v

10pF

Cdi104*2c

1µF/50v

Rdi105

Cdi105*2c

1µF/50v

820R

T1

2

to G1 Rpp104 6k81

Rpad103 180R

con105 TRin1 pri

Rpad101 820R

3

P

T2 Rpp102 47k

option 2b (Lytic)

Cdi101

6k81 con101 XLR1 in

T2 T1

10µF/35v

SWpad1 Rdi108 220R 2P2T P

T2

P

T2 T1

1

SWdi1 2P2T P

SWz1 2P2T

2 3

T2

Rpad102

4 to G1

820R

to Gpp

Phantom power

T1

P

T2 T1

Rdi107 1k5

Rdi106 220k

P

+48v

to G1 to star (direct) SWpp1 2P2T

Cdi102*2b

NJFET

Rdi101 1m

Rpp101 220R

2µ2/63v

-20dB Attenuator (PAD)

T2

Rdi102 33k

Cdi103*2a

MIC / Instrument

Bodanga Custom Audio - BD180-P4 SS Mic Preamp Input switching and DI Rafael Frederico Teixeira - All rights reserved

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T2

10R con106 DI

2µ2/63v

T1

-24v

option 2a (EPCOS)

Cdi102*2a

P

Cdc+1 47µF/35 to G1 Rdi103

10R Cdc-1 Rdc-1 47µF/35v

T1

+24v


BD180-P4-input