Scale Sheet

Size FCSM No. DWG No. Rev

1 of 1

B Redrawn by John Hinson from C-10068

Modular Amplifier Model 610-A

V1-B1/2 12AX7

V1-A1/2 12AX7

R274K7 1W

R6270K 1W

R281M2

R8100K 1W

R101K 1W

C3

.047uF 600V

C4

.047uF 600VV2-A1/2 12AY7

V2-B1/2 12AY7

R14470K

R154K7

R18560R

R161M2

C5

.047uF 600V

R7

82K

R12

10K

R17

10K

R13250K

C14.2uF 200V

+ C1010uF/400V

+ C2-B10uF/400V

+ C1-A10uF 450V

+ C1-B10uF 450V

R1982K

R5

47R

C8 .002uF 100V

R1168K

R9

39K

R261M2

Hi GainLo Gain

S1

R227R

R327R

R1

15K

R4

15K

T2UTC PA-5946

B+

C7.047uF 600V

C15

82 pF

C10100pF 100V

C6

.047uF 600V

R2010K

R22

220K

R23100K

C12

47pF 100V

C9

.0047uF 100V

R21

270K

-6

0

+3

+6

S2HF Switch

R242K2

C11

.01uF 100V

C17

.002uF 100V

C16

.01uF 100V

-6

0

+6

-6

0

+6

S3LF Switch

C13.0047uF 100V

R25270K

Line In +

Mic In -

Line In -

Mic In +

Line Out +

Line Out -

Echo OutR33

10K

30K ohm 600 ohm

L = 55HY Min.

Tertiary (not used on 610)

6

7

1

4

5

3

2

T1UTC O-1

* This schematic intended for circuit reference only. Does not show amphenol connector wiring and buss switching arangement.