Keith TV8 User Manual

C13

4n7

400V

R15
100R

EL84

242V

R17

150R

V3

R16
4k7

R18

250R

5W

T2

T35013

270V

C15
100µ
450V

+

V4

EZ80

3

4
5

0V

SP-3Ω

260V

7

9
2

3

5

7V

4

C14

47µ

+

6.3V to Heaters

3.15V

3.15V

265V

1

7

TR1

250V

230V

210V

265V

F1

3A

R11
47k

185V

C1

+

33µ

0V

VR2

Log A

1M

CCW

450V

C7

10n

160V

C6

5n1

R9

1M

V2A

ECC83

R8

100k

C9 2n

350V

143V

6

7

8

9

4+5

160V

R12

680k

1.4V2.8V

+

R10
3k3

C8

47µ

R4

470k

V1

EF86

R3

1M

R1

56k

R2

56k

250V

J1

J2

C2

470n

110V

R6

3k3

R5

100k

C4

10n

400V

120V

6

8
1

9

3

5

4

+

C3
47µ

R7

1M

CCW

VR1
500k
Log A

C5

250p

C10
2n2

C12

+

33u

450V

C11

2n2

160V

R13

680k

R14

680k

Volume Tone

High Pass Filter

for ‘filtered sound’

E

N

Mains Input

This ‘magic eye’ valve is
fitted on the Mercury 5
to indicate the amount
and rate of Tremolo. The
original schematic is not
clear what valve is fitted
and it may be an EM87

R21 ?

220k ?

R25

2M7

Tremolo Indicator (Mercury 5)

V5

EM84

R24

560k

1

3

6

9

7

4 5

Tremolo

Foot Switch

S3

Yellow

VR3
220k

Linear

R19

3M3

C16

100n

400V

V2B

ECC83

Blue

CCW

C17

100n

R21

220k

160V

C19

1

33n

C20

C21

22n

2

3

9

4+5

1.2V

+

C18

47µ

R20
3k3

10n

R22

2M2

R23
510k

R24
47k

CCW

VR4

500k

Anti-Log

Green

Tremolo SpeedTremolo depth

Selmer TruVoice TV8/T ~ Mercury Five ~ by Keith Snook 2020 ~ www.keith-snook.info/Selmer-TV8-Mercury5.html

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