Velleman-kit K8011 User manual

Total solder points: 600

Difficulty level:

beginner 1o2o3o4o5þadvanced

MANUAL H8011P-ED1

MONO VALVE POWER AMPLIFIER

MODULE K8011

⇒Pure valve sound with EL34 valves

⇒Easy bias adjustment with LED indication

⇒High quality capacitors and components

⇒Standby function

⇒Soft start circuit for power transformer

⇒Single PCB ensures hassle-free assembly and wiring

⇒High quality toroid transformers

⇒Sensitivity adjustment for exact level matching of two mono amps

⇒A special chassis plate is also available, order code: CHP8011

Specifications

•90Wrms in 4 or 8Ω(at rated mains voltage)

•Bandwidth: 2Hz to 125KHz (-3dB/1W)

•Harmonic distortion: 0.1% @ 1W/1KHz

•Signal to noise ratio: 104dB (A weighted)

•Input sensitivity: 1Vrms min. (adjustable)

•Supply voltage: 100, 120, 230 or 245VAC

•Stand by power consumption: 60W

•Maximum power consumption: 230W

•PCB dimensions: 245 x 320mm (9.65” x 12.6”)

modifications reserved

4K7= ( 4 - 7 - 2 - B )

4K7= ( 4 - 7 - 0 - 1 - 1 )

COLOR= 2… 5

IPESF SDK NDGB FNL

CODICE

COLORE

CODIGO

CORES

CODIGO

DE COL-

ORES

VÄRI

KOODI FÄRG

SCHEMA

FARVE

KODE FARGE

KODE FARB

KODE

COLOUR

CODE CODIFI-

CATION

DES

COU-

LEURS

KLEUR

KODE

Nero Preto Negro Musta Svart Sort Sort Schwarz Black Noir Zwart 0

Marrone Castanho Marrón Ruskea Brun Brun Brun Braun Brown Brun Bruin 1

Rosso EncarnadoRojo Punainen Röd Rød Rød Rot Red Rouge Rood 2

Aranciato

Laranja Naranjado

Oranssi Orange Orange Orange Orange Orange

Orange

Oranje

Giallo Amarelo Amarillo Keltainen Gul Gul Gul Gelb Yellow Jaune Geel 4

Verde Verde Verde Vihreä Grön Grøn Grønn Grün Green Vert Groen 5

Blu Azul Azul Sininen Blå Blå Blå Blau Blue Blue Blauw 6

Viola Violeta Morado Purppura Lila Violet Violet Violet Purple Violet Paars 7

Grigio Cinzento Gris Harmaa Grå Grå Grå Grau Grey Gris Grijs 8

Bianco Branco Blanco Valkoinen Vit Hvid Hvidt Weiss White Blanc Wit 9

Argento Prateado Plata Hopea Silver Sølv Sølv Silber Silver Argent Zilver A

Oro Dourado Oro Kulta Guld Guld Guldl Gold Gold Or Goud B

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MONO VALVE AMPLIFIER MODULE

TECHNICAL DATA*

•Output power: 90 Wrms (at rated supply voltage)

•Output impedance 4 or 8 Ohms

•Ultra linear toroid output transformer

•Switch-on delay, to protect the output valves: approx. 1 minute

•Standby circuit

•Built-in bias current indicator

•Switch-on delay for the supply transformer: 0.5s

•Power bandwidth: 8 -45kHz (-3dB, ref. 50W)

•Frequency range: 2 Hz -125kHz (-3dB, ref. 1W)

•Harmonic distortion: 0.1% (1 kHz/1W)

•Signal/noise ratio: > 104dB (A weighted wrt 90W)

•Input impedance: 100Kohm

•Input sensitivity: 1Vrms minimum (adjustable)

•Damping factor (100Hz): > 10

•Supply voltage: 100, 120, 230 or 245VAC

•PCB dimensions: 245 x 320mm

*We reserve the right to make changes.

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1. Assembly (Skipping this can lead to troubles ! )

Ok, so we have your attention. These hints will help you to make this project successful.

Read them carefully.

1.1 Make sure you have the right tools:

•A good quality soldering iron (25-40W) with a small tip.

•Wipe it often on a wet sponge or cloth, to keep it clean;

then apply solder to the tip, to give it a wet look. This is

called ‘thinning’ and will protect the tip, and enables you

to make good connections. When solder rolls off the tip, it needs cleaning.

•Thin raisin-core solder. Do not use any flux or grease.

•A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads,

hold the lead so they cannot fly towards the eyes.

•Needle nose pliers, for bending leads, or to hold components in place.

•Small blade and phillips screwdrivers. A basic range is fine.

For this projects, a basic multi-meter is required

1.2 Assembly Hints :

þMake sure the skill level matches your experience, to avoid disappointments.

þFollow the instructions carefully. Read and understand the entire step before you perform each

operation.

þPerform the assembly in the correct order as stated in this manual

þPosition all parts on the PCB (Printed Circuit Board) as shown on the drawings.

þValues on the circuit diagram are subject to changes.

þValues in this assembly guide are correct*

þUse the check-boxes to mark your progress.

þPlease read the included information on safety and customer service

* Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated

as ‘NOTE’ on a separate leaflet.

1.3 Soldering Hints :

Mount the component against

the PCB surface and carefully

solder the leads

Make sure the solder joints are

cone-shaped and shiny Trim excess leads as close as

possible to the solder joint

0.000

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Assembly of the main PCB P8011:

Foreword:

For best results and easy handling of the large PCB (Printed Circuit Board), we will start by putting the

four large valve sockets in place. This will allow us to rest the board on the bench, without having the

component leads touching the bench surface.

When the component leads are put in the appropriate holes on the PCB, we recommend to gently bend

the leads outwards, so they stay on the board when it is flipped over to apply solder.

You gain a reasonable amount of time if you put approx. 10 components in place every time, before you

flip the board, and make the solder joints.

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15mm M3 SPACER

8mm SPACER

PCB

VALVE SOCKET

15mm M3 BOLT

1. VALVE SOCKET MOUNTING

Check the position of the notch in the centre of the tube socket, it must correspond to the notch in the

circle printed on the PCB. Connect the leads to the corresponding isles on the PCB using a small piece

of supplied jumper wire.

IMPORTANT:

Make the connection exactly as shown in the illustration, otherwise the small piece of wire could touch

the bottom of the cabinet, see further.

qV1:

qV2:

qV3:

qV4:

Also mount a 15 mm spacer on the remaining holes in

the PCB (at the solder side), use a 6 mm M3 bolt:

qA spacer next to TRAFO1

qA spacer next to SK15

qA spacer next to SK6

qA spacer next to R62

qA spacer next to V6

qA spacer next to SK19

6mm M3 BOLT

15mm M3 SPACER

V...

Connect the valve socket terminals 1, 3, 4, 5, and 8 to the corresponding

points at the solder side of the PCB.

Use a piece of supplied jumperwire. Mount the wire in such way that it can-

not touch the bottom of the cabinet. (see above illustration).

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2. JUMPERS

qJ1 (mount 2 wires in the same hole)

qJ2 (mount 2 wires in the same hole)

qJ3 (mount 2 wires in the same hole)

qJ4 (mount 2 wires in the same hole)

qJ5

qJ6

qJ7

qJ8

qJ9

qJ10

qJ11

qJ12

qJ13

qJ14

qJ15

qJ16

qJ17

qJ18

qJ19

qJ20

qJ21

3. JUMPERS FOR AC POWER SE-

LECTION

For 100V input (mains), mount:

qJA at the voltage selection 1

qJA at the voltage selection 2

For 115V -120V input, mount:

qJB at the voltage selection 1

qJB at the voltage selection 2

Note that from J1 to J4, two jumper wires have

to be mounted in the same hole, for extra cur-

rent handling.

TIP

In order to get nice straight wiring, without

too much folding and measuring, follow

these hints:

•Put the jumper wire in place

•Solder one end of the lead.

•Then carefully pull on the free end of the

lead until it is straight, and apply solder.

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For 220V -230V input, mount:

qJC at the voltage selection 1

qJC at the voltage selection 2

For 240V -245V mains input, mount:

qJD at the voltage selection 1

qJD at the voltage selection 2

4. DIODES (Check the polarity!)

D...

CATHODE

qD1: 1N4148

qD2 :1N4148

qD3: 1N4007

qD4: 1N4148

qD5: 1N4007

qD6: 1N4148

qD7: 1N4148

qD8: 1N4148

qD9: 1N4007

qD10: 1N4007

qD11: 1N4007

qD12: 1N4007

qD13: 1N4007

qD14: 1N4007

qD15: 1N4007

qD16: 1N4007

qD17: 1N4007

qD18: 1N4007

qD19: 1N4007

qD20: 1N4007

qD21: 1N4007

qD22: 1N4007

qD23: 1N4007

qD24: 1N4148

qD25: 1N4148

qD26: 1N4148

qD27: 1N5408 not on tape !

qD28: 1N5408 not on tape !

qD29: 1N5408 not on tape !

qD30: 1N5408 not on tape !

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5. ZENER DIODES

(Check the polarity!)

ZD...

CATHODE

qZD1: 3V9

qZD2: 3V9

6. ¼W & ½W RESISTORS

R...

qR1: 470 (4 -7 -1 -B)

qR2: 220K (2 -2 -4 -B)

qR3: 2K2 (2 -2 -2 -B)

qR4: 2K2 (2 -2 -2 -B)

qR5: 220K (2 -2 -4 -B)

qR6: 100K (1 -0 -4 -B)

qR7: 1K (1 -0 -2 -B)

qR8: 1K (1 -0 -2 -B)

qR9: 22K (2 -2 -3 -B)

qR10: 3.3 (3 -3 -B -B -9)

qR11: 3K9 (3 -9 -2 -B)

qR12: 1K5 (1 -5 -2 -B)

qR13: 1M (1 -0 -5 -B)

qR14: 1M (1 -0 -5 -B)

qR15: 1K (1 -0 -2 -B)

qR16: 47K (4 -7 -3 -B)

qR17: 470K (4 -7 -4 -B)

qR18: 680 (6 -8 -1 -B)

qR19: 3K9 (3 -9 -2 -B)

qR20: 10K (1 -0 -3 -B)

qR21: 10K (1 -0 -3 -B)

qR22: 1K5 (1 -5 -2 -B)

qR23: 1K2 (1 -2 -2 -B)

qR24: 560 (5 -6 -1 -B)

qR25: 100K (1 -0 -4 -B)

qR26: 220K (2 -2 -4 -B)

qR27: 100K (1 -0 -4 -B)

qR28: 220K (2 -2 -4 -B)

qR29: 10K (1 -0 -3 -B)

qR30: 4E7 (4 -7 -B -B)

qR31: 1M5 (1 -5 -5 -B)

qR32: 1K5 (1 -5 -2 -B)

qR33: 33K (3 -3 -3 -B)

qR34: 8K2 (8 -2 -2 -B)

qR35: 220K (2 -2 -4 -B)

qR36: 10K (1 -0 -3 -B)

qR37: 100K (1 -0 -4 -B)

qR38: 220K (2 -2 -4 -B)

qR39: 100K (1 -0 -4 -B)

qR40: 220 (2 -2 -1 -B -9)

qR41: 100K (1 -0 -4 -B -9)

qR42: 47K (4 -7 -3 -B -9)

qR43: 220 (2 -2 -1 -B -9)

qR44: 220 (2 -2 -1 -B -9)

qR45: 220 (2 -2 -1 -B -9)

qR46: 2K2 (2 -2 -2 -B -9)

qR47: 27K (2 -7 -3 -B -9)

qR48: 220 (2 -2 -1 -B -9)

qR49: 220 (2 -2 -1 -B -9)

qR50: 100K (1 -0 -4 -B -9)

qR51: 330K (3 -3 -4 -B -9)

qR52: 330K (3 -3 -4 -B -9)

qR53: 330K (3 -3 -4 -B -9)

qR54: 330K (3 -3 -4 -B -9)

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7. 1W RESISTORS

R...

2mm

qR55: 270 (2 -7 -1 -B)

qR56: 10K (1 -0 -3 -B)

qR57: 10K (1 -0 -3 -B)

qR58: 12K (1 -2 -3 -B)

qR59: 39K (3 -9 -3 -B)

qR60: 39K (3 -9 -3 -B)

qR61: 39K (3 -9 -3 -B)

qR62: 100K (1 -0 -4 -B)

qR63: 47K (4 -7 -3 -B)

qR64: 47K (4 -7 -3 -B)

qR65: 10 (1 -0 -0 -B)

qR66: 10 (1 -0 -0 -B)

qR67: 180 (1 -8 -1 -B)

qR68: 180 (1 -8 -1 -B)

qR69: 180 (1 -8 -1 -B)

qR70: 10 (1 -0 -0 -B)

qR71: 10 (1 -0 -0 -B)

qR72: 180 (1 -8 -1 -B)

8. LEDs (Check the polarity!)

LD...

COLOR = 2...5

CATHODE

qLD1: 5mm red (2) blinking

qLD2: 3mm bicolor, power /

standby / on indication:

Carefully check the mounting of this LED:

LD...

If wanted, above LED can also be

mounted on a front panel. Then

please use wires to make the connec-

tions 1, 2 and 3. Use the PCB termi-

nal SK20 (see later section 27).

qLD3: 3mm YEL (4)

qLD4: 3mm YEL (4)

qLD5: 3mm YEL (4)

qLD6: 3mm YEL (4)

qLD7: 3mm GREEN (5)

qLD8: 3mm GREEN (5)

qLD9: 3mm RED (2)

qLD10: 3mm RED (2)

qLD11: 3mm RED (2)

qLD12: 3mm RED (2)

qLD13: 3mm RED (2) (next to R61)

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9. IC SOCKETS

(Check the position of the notch!)

IC...

qIC1: 18P

10. REED RELAY

(Check the position of the notch!)

PIN 1

RY...

qRY1: VR05R121

11. DIP SWITCHES

SW...

Check that switch 1 corresponds to pin 1.

qSW2: DS-4

12. RESISTOR TRIMMERS

Horizontal type

RV...

qRV1: 100K

qRV2: 100K

qRV3: 100K

qRV4: 100K

qRV5: 500K (470K)

13. TRANSISTORS

T...

qT1: BC516

qT2: BC547C

qT3: BC547C

qT4: BC547C

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14. 5W RESISTORS

R...

2mm

REMARK: You will have one 15 Ohm 5W resis-

tors left over for later use.

qR73: 1E

qR74: 15

qR75: 15

15. PCB BLADE TERMINALS

Mount them as straight AS possible against the

PCB. A good solder joint is very important !

SK...

qSK1: 4 Ohm

qSK2: GND

qSK3: 8 Ohm

qSK4: BLUE

qSK5: RED

qSK6: YELLOW

qSK7: GRAY

qSK8: GRAY

qSK9: GREEN

qSK10: GREEN

SK21 and SK22 will not be used

16. CINCH / RCA CONNECTOR

Mount it as straight and square as possible

against the PCB.

qSK11: CINFP/90

17. PCB TERMINAL BLOCK

some blocks slide one into each other !

Mount these terminals with the wire inputs fac-

ing the PCB edge (except for SK20, which

should be mounted facing LD1.

qSK12: 2 POLE (large)

qSK13: 3 POLE

qSK14: 3 POLE

qSK15: 3 POLE

qSK16: 3 POLE

qSK17: 3 POLE

qSK18: 3 POLE

qSK19: 3 POLE

qSK20: 3 POLE

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18. VALVE SOCKET

V...

Mount them square against the PCB

qV5: B9A

qV6: B9A

19. CAPACITORS

C...

Check the voltage rating !

qC1: 47nF (473, 0.047, 47000)

qC2: 100pF (101)

qC3: 330pF/400V (331)

qC4: 330pF/400V (331)

qC5: 68n/630V (683, 0.068)

qC6: 68n/630V (683, 0.068)

qC7: 68n/630V (683, 0.068)

qC8: 68n/630V (683, 0.068)

qC9: 68n/630V (683, 0.068)

qC10: 68n/630V (683, 0.068)

qC11: 680n/160V (684, 0.68)

qC12: 680n/160V (684, 0.68)

qC13: 680n/160V (684, 0.68)

20. POWER RELAYS

The various relays have footprints that corre-

spond to the footprints on the PCB :

qRY2: VR10V121C

qRY3: VR10V121C

RY...

qRY4: VR5V122C

RY...

21. FUSE HOLDER + FUSE

F...

qF1: Fuseholder + cover

q4A FUSE @ 230 -245V or

q8A FUSE @ 100 -110V

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22. ELECTROLYTIC CAPACITOR

(Check the polarity!)

C...

qC14: 4µF7

qC15: 100µF

qC16: 470µF

qC17: 470µF

qC18: 470µF

qC19: 470µF

qC20: 47µF/100V

qC21: 100µF/100V

qC22: 1000µF

qC23: 4700µF

qC24: 47µF/350V

qC25: 47µF/350V

qC26: 100µF

qC27: 1µF

23. TRANSFORMER

TRAFO...

qTRAFO1: 12VAC

24. ELECTROLYTIC CAPACITOR

(Check the polarity!)

Generally these capacitors are of the snap-in

type and cannot be mounted incorrectly.

C...

qC28: 100u/400V

qC29: 220u/450V

qC30: 220u/450V

C31 will not be used

__________________________________________________________________________________________________________________________________________________________

25. INSERT THE IC

(Check the position of the notch!)

IC...

PIN 1

qIC1: LM3914

26. 6.3V VALVE WIRING

qWiring for the 4 valve sockets V1 to V4. Use the supplied brown wire. Twist them as shown in the

illustration. The polarity is not important. For safety, it is advisable to check with an ohmmeter

that the two 6.3V terminals are not shorted when the wiring is completed.

VIEWED FROM SOLDERSIDE

556

6.3VAC

f7 f6 f5

6.3VAC

f4 f3

f2 f1

556

Check the complete assembly again for errors. Pay special attention to bad sol-

der joints and wrongly inserted or misplaced components !

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27. FINAL ASSEMBLY AND WIRING

Please pay attention to the following hints, for best results :

•Mount the module on a grounded metal chassis.

•A suitable chassis can be ordered separately (order code CP8011)

•The PCB ground is automatically connected to the metal chassis by means of the metal spacer located

next to the RCA input. A 470 Ohm resistor avoids hum loops.

•Provide plenty of ventilation, as tubes run very hot.

•Use the provided mains inlet, together with a suitable 3-conductor mains cord (not included).

•For best results, position the transformers as described.

•Take care about electrical safety. The PCB carries lethal voltages !

Mounting of the optional CHP8011 chassis

•Bend the rear plate as show in the illustration. Pay attention to the right bending direction.

FIG 1

•Mount the switch a shown in the illustration.

FIG 2

•Mount the LED, using the included support (see illustration).

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FIG 3

•Fasten the mains inlet with two suitable bolts and nuts.

M3 BOLT

M3 NUT

FIG 4

•Fasten the PCB to the chassis with M3 bolts.

•Mount the supply transformer (the smallest of both transformers) on the left hand side as shown in the

illustration. Use the supplied rubber washer and M8 bolt.

_______________________________________________________________________________________________________________________________________________________

M8 BOLT

RUBBER WASHER

TRANSFORMER

RUBBER WASHER

STEEL DISHED WASHER

M8 NUT

FIG 5

•The output transformer (type ZD043) is mounted on the right hand side, in a similar way.

__________________________________________________________________________________________________________________________________________________________

Wiring :

The mains inlet :

The earth pin must be hooked-up to the chassis as shown in the illustration. Use a length of yellow/green

wire and the supplied ring crimp terminal.

FIG 6

Connect the mains inlet with SK12 on the PCB. Use suitable leads of at least 0.5mm²

FIG 7

REMARK :Fill out the included power rating label, and stick it onto the chassis or enclosure, on a clearly

visible location.

The transformers :

IMPORTANT: Do not trim the wires of the transformers, leave them at their original length. If there

is more than one conductor in an insulating sleeve, you have to make sure they are soldered together

and make a good electrical connection before they are connected to a screw terminal.

Power transformer :

•Connect the power transformer with the connectors marked ‘FROM POWER TRANSFORMER’ on the

PCB.

•Connect the sturdy grey wires to the connectors marked SK7 and SK8 (GRAY) . The remaining green

wires must be hooked-up to the connectors marked SK9 and SK10 (GREEN).

_______________________________________________________________________________________________________________________________________________________

Output transformer (ZD043):