100W SUBWOOFER KIT. Total solder points: 383 Difficulty level: beginner advanced K8077 ILLUSTRATED ASSEMBLY MANUAL

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Transcription:

100W SUBWOOFER KIT Powerful bass from a small cabinet thanks to the dual speaker principle Total solder points: 383 Difficulty level: beginner 1 2 3 4 5 advanced K8077 ILLUSTRATED ASSEMBLY MANUAL H8077IP-1

Features & specifications Features : bass-reflex system with adjustable tube compact size due to dual-speaker principle adjustable level and filter response auto power-on/off system phase switch (0-180 ) line level and speaker level inputs for maximum compatibility 'Full-range'-option for use in active speaker system separate chamber for electronics avoids air leaks Specifications power output: 100Wrms/ 4ohm (10% THD) filter freq. response: wide: 25-110Hz (-6dB) narrow: 18-65Hz (-6dB) speakers: two 6.5" 8 ohm drivers line level input sensitivity: 500mV auto turn-on level: 5mV volume*: approx. 20 liter power supply: 120/230VAC dimensions*: 460x310x210mm / 18,22 x 12,28 x 8,32" (*) recommended enclosure. Drawings for enclosure are included 2

Assembly hints 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 some projects, a basic multi-meter is required, or might be handy 0.000 1.2 Assembly Hints : Make sure the skill level matches your experience, to avoid disappointments. Follow the instructions carefully. Read and understand the entire step before you perform each operation. Perform the assembly in the correct order as stated in this manual Position all parts on the PCB (Printed Circuit Board) as shown on the drawings. Values on the circuit diagram are subject to changes. Values in this assembly guide are correct* 3

Assembly hints Use the check-boxes to mark your progress. Please 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 : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder joints are cone-shaped and shiny 3- Trim excess leads as close as possible to the solder joint AXIAL COMPONENTS ARE TAPED IN THE CORRECT MOUNTING SEQUENCE! REMOVE THEM FROM THE TAPE ONE AT A TIME! 4

Construction 1. Jump wires. J1 J8 R3 R4 R8 R11 2. Diodes (check the polarity) CATHODE D1 : BAT85 D2 : 1N4148 D3 : 1N4148 D4 : 1N4148 D5 : 1N4007 D6 : 1N4007 D7 : 1N4007 D8 : 1N4007 D9 : 1N4007 D10 : 1N4007 3. 1/4W resistors. R... D... R1 : 22K (2-2 - 3 - B) R2 : 22K (2-2 - 3 - B) R7 : 47K (4-7 - 3 - B) R12 : 3K3 (3-3 - 2 - B) R13 : 22K (2-2 - 3 - B) R14 : 33K (3-3 - 3 - B) R15 : 22K (2-2 - 3 - B) R16 : 10K (1-0 - 3 - B) R17 : 22K (2-2 - 3 - B) R18 : 1K (1-0 - 2 - B) R19 : 10K (1-0 - 3 - B) R20 : 1K (1-0 - 2 - B) R21 : 220 (2-2 - 1 - B) R22 : 33K (3-3 - 3 - B) R23 : 1K (1-0 - 2 - B) R24 : 100K (1-0 - 4 - B) R25 : 390K (3-9 - 4 - B) R26 : 15K (1-5 - 3 - B) R27 : 470 (4-7 - 1 - B) R28 : 15K (1-5 - 3 - B) R29 : 100K (1-0 - 4 - B) R30 : 100K (1-0 - 4 - B) R34 : 10K (1-0 - 3 - B) R35 : 10K (1-0 - 3 - B) R36 : 10K (1-0 - 3 - B) R37 : 10K (1-0 - 3 - B) R39 : 10K (1-0 - 3 - B) R40 : 100K (1-0 - 4 - B) R41 : 33K (3-3 - 3 - B) R42 : 100 (1-0 - 1 - B) R43 : 47K (4-7 - 3 - B) R44 : 330 (3-3 - 1 - B) R45 : 220 (2-2 - 1 - B) R46 : 47 (4-7 - 0 - B) R47 : 3K3 (3-3 - 2 - B) R48 : 680 (6-8 - 1 - B) R49 : 3K3 (3-3 - 2 - B) R50 : 3K3 (3-3 - 2 - B) R51 : 10 (1-0 - 0 - B) R52 : 3K3 (3-3 - 2 - B) R53 : 1K5 (1-5 - 2 - B) R54 : 3K3 (3-3 - 2 - B) R55 : 680 (6-8 - 1 - B) R56 : 1K (1-0 - 2 - B) R57 : 220 (2-2 - 1 - B) R58 : 47 (4-7 - 0 - B) R61 : 1K8 (1-8 - 2 - B) R62 : 470 (4-7 - 1 - B) 5

Construction 4. Metallfilm resistors. 7. LEDs. Watch the polarity! R... LD1 CATHODE R5 : 100 (1-0 - 1 - B - 9) R6 : 470 (4-7 - 1 - B - 9) R9 : 100 (1-0 - 1 - B - 9) R10 : 470 (4-7 - 1 - B - 9) R31 : 820 (8-2 - 1 - B) R32 : 820 (8-2 - 1 - B) R33 : 560 (5-6 - 1 - B) R38 : 2K7 (2-7 - 2 - B - 9) LD3 : RED (-35/+35VDC) 8. IC sockets. Watch the position of the notch! 5. Zener diodes (check the polarity) ZD1 : 5V1 ZD2 : 5V1 ZD3 : 15V0 ZD4 : 15V0 ZD5 : 9V1 6. Pinheaders T7 T8 T9 6 : 5 pins : 6 pins : 6 pins CATHODE ZD... IC1 : 8p IC2 : 14p IC3 : 8p 9. Capacitors C1 : 390pF (391) C2 : 390pF (391) C3 : 100nF (104) C4 : 100nF (104) C5 : 100nF (104) C6 : 100nF (104) C7 : 100nF (104) C8 : 100nF (104) C9 : 100nF (104) C10 : 100nF (104) C11 : 680pF (680) C12 : 680pF (680) C13 : 47nF (473) C14 : 47pF (47) C15 : 47pF (47) C16 : 47pF (47) C17 : 1nF (102) C18 : 100pF (101) C19 : 10nF (103) c...

Construction 14. PCB tab SK12 : GND C20 : 0,047µ F / 63V C21 : 0,068µ F / 63V C22 : 4700pF/ 100V C23 : 0,022µ F / 63V C24 : 0,022µ F / 63V 10. Diodes (check the polarity) D11 : 1N5404 D12 : 1N5404 D13 : 1N5404 D14 : 1N5404 11. Trim potentiometer CATHODE D... 15. Flat receptacles LS+ LS- AC BLUE AC RED AC GREY AC YELLOW 16. Male board wire connector SK11 SK... RV3 : 1K R4 Turn RV3 fully counterclockwise 12. Transistors T1 : BC547B T2 : BC547B T3 : BC640 T4 : BC640 T5 : BC557 T6 : BC639 T1 SK11 - + - + Remark: if you wish to have a POWER and ON indication in a remote location, you can remove the shunts and connect the supplied female board to wire connector and two extra LED s SK11 Wiring diagram: Brown cathode1 Red Orange Yellow anode1 anode2 cathode2 - - + ON + POWER SK11 - + - + 13. 5W resistors R59 : 0,47 R60 : 0,47 R... Yellow Orange Red Brown Anode2 Anode1 Cathode1 Cathode2 2mm SK11 + - + - 7

construction 17. Potentiometers 18. Electrolytic capacitors. Watch the polarity! COMPONENT SIDE C... RV1 : Stereo log. 50K RV2 : Stereo log. 50K C25 C28 : 10µ F / 35V C29 : 22µ F / 50V C30 C35 : 100µ F / 50V C36 : 470µ F / 16V 19. Switches Fig 1.0 SW1 SW2 : Phase : Mode Position the switches onto the PCB first. Mount a wire jumper onto each switch connector and connect these with the switch connector on the PCB. COMPONENT SIDE Fig 1.0 8

Construction 20. Relais RY1 : VR5V242C ( 24VDC - 5A - 2C) 21. Electrolytic capacitors. Watch the polarity! 23. LEDs LD1 : POWER LD2: ON (red) (red) Mount both LEDs on the solderside at 8mm of the PCBn cathode is marked with 'C'. C37 : 3300µ F / 50V C38 : 3300µ F / 50V C... 22. Female cinch connectors SOLDERSIDE Cathode Anode SK... SOLDERSIDE MOUNT THEM ON THE SOLDERSIDE! Mount first : SK1 : LOW LEVEL IN 'RIGHT' SK3 : HIGH LEVEL IN 'RIGHT' Mount now : SK2 : LOW LEVEL IN 'LEFT' SK4 : HIGH LEVEL IN 'LEFT' 8mm COMPONENT SIDE SK... Inspect the complete assembly. Once the PCB is mounted on the heatsink, the solderside is no longer accessible. 9

Fixing the knobs 24. Fixing the knobs Slide the knobs fully onto the potentiometer axes. Turn potentiometers fully counterclockwise Watch the position of the dot!! 10

Fixing the PCB 25. Fixing the PCB onto the heatsink Fixing the PCB onto the heatsink : (1) Slide 2 x 5mm plastic spacers over the black bolts. (2) Carefully position the PCB onto the two bolts (3) fasten using two nuts. M3 nut Spacer M3 bolt 16mm 11

Fixing the PCB Tighten gently, making sure that : the leds protrude the holes the cinch (RCA) connectors do not touch the heatsink the knobs do not touch the heatsink the switches do not touch the heatsink (4) fit the remaining bolts and spacers (5) fit the nuts and tighten them all, while minding the position of the knobs, switches, leds and connectors 5X 12

Fixing power transistors 26. Fixing the power transistors T8 (TIP147) & T9 (TIP142) bend both transistors as indicated. +/- 5mm apply a drop of heat conductive compound on the heatsink. position the mica onto the heatsink so that the hole coincide with the hole in the heatsink, press gently. apply a drop of heat conductive compound on the mica. Mount the transistor on the heatsink, using a 16mm bolt, lock washer and nut. Make sure the transistor leads are correctly positioned between the pins of the pinheader. Tighten gently. M3 nut Lock washer T8 (TIP147) mica Heat conductive compound M3 bolt 13

Fixing Diode D15 Solder the transistor leads Repeat for the remaining transistor T9 (TIP142) 27. Fitting diode D15 (1N4007) Bend the leads as indicated. Put a large drop of heat conductive compound on the heatsink. Solder the diode to the two outer pins of the pin header. Make sure that the diode is bend towards the heat conductive compound.! Mind the direction of the ring. It should face transistor T9 14

Fitting transistor T7 28. Fitting transistor T7 (BC547) Bend the leads as indicated. Put a large drop of heat conductive compound on the heatsink. Solder the transistor to the remaining pins of the pinheader. The flat side of the transistor must face the heatsink. Make sure that the transistor and diode leads do not touch each other and make sure that the diode does not touch the power transistor. 15

Mounting power supply section 29. Mounting the power supply section 1. Mounting the AC connector Position the AC connector at the PCB side of the heatsink and fix by means of two 10mm black screws. 10mm screw 2. Mounting the power switch Click the power switch onto the heatsink. Make sure the '0'-position of the switch faces the AC connector. 16

Mounting power supply section 3. Mounting the fuse holder 2A T Place the fuse holder and fix with the included nut. Place a 2A T fuse. 17

Mounting power supply section 4. Fixing the transformer Rotate the transformer in such a way that the red/yellow/blue/grey wires point towards the PCB. Tighten the nut nut disk washer transformer washer bolt 18

Mounting power supply section 5. Wiring the ground connection Connect one end of the cable to the red ring terminal. 1 2 Connect the ring terminal to the chassis by means of a black bolt, spring washer and nut. M3 nut spring washer 16mm M3 bolt Scratch off anodizing for better conduction Solder the other end to the PCB tab (SK12) 19

Mounting power supply section 6. Transformer wiring (red/yellow/blue/grey wires) Slide an insulation sleeve over each wire. Solder a connector to each wire SOLDER Slide the sleeve over the connector REMARK : In case you trim the wires, always remove the insulating lacquer (+/- 1cm) Connect the wires to the PCB. Mind the colours! RED GREY BLUE YELLOW Group the wires by means of two cable ties Cut the largest of the two heatshrink tubes into 3 pieces: 3cm - 3cm - 4cm 20 3cm 3cm 4cm

Mounting power supply section Trim the black transformer wire to a length of 14cm. Slide a piece of heatshrink tube (3cm) over the black transformer wire. 120VAC : ORANGE 235VAC : BROWN Unused lead 120VAC : BROWN 235VAC : ORANGE BLACK BLACK BLACK HEATSHRINK TUBE Solder the wire to the AC connector Use the remaining black wire to connect the second AC connector lug with the center connector of the fuse holder. Don't forget to slide a piece of heatshrink tube (4cm) over the wire. Connect the remaining fuseholder-connector with the power switch. Don't forget the heatshrink tube. Depending on your local AC voltage, connect either the brown wire (100-120VAC) or the orange wire (220-245VAC) to the power switch. Don't forget the heatshrink tube. Trim the remaining wire to a lenght of 11cm. Insulate the end by means of a piece of heatshrink tube. Group the wires by means of two cable ties. 21

Testing the unit 30. Testing the unit 60W (120 / 235VAC) From K8077 Power supply 120 / 235VAC 22 Make sure that the IC s are removed from their sockets. We recommend to construct a small test-jig, and connect the unit as shown below. 1. Put the power switch in the I position 2. Put the MODE -switch in the AUTO-ON -position. 3. When power is applied, the POWER led should light. If the light bulb remains lit, turn off the power immediately and check your circuit. By means of a multi meter set to DC volts, you can check the following voltages: Use the GND tab next to the red transformer wire as - J2: +15V J3: -15V Left lead of R33: +24V or slightly higher Right lead of R37: +5V 4. Turn off the power and mount the IC s. 5. Turn on the power again repeat the above measurements. If OK, flip the MODE -switch to ON Once again, if the light bulb remains lit, turn off the power immediately and check your circuit. LD3 should light. Check the following voltages: Cathode D11: +35V Anode D12: -35V 6. Connect the multimeter across R60 (right power resistor). 7. Meter should read 0V (Mind the polarity)! 8. Adjust RV3 until the meter reads 10mV Wait a while until the readout remains constant 9. Remove the multimeter and turn off the power IC1 : TL074 IC2 : TL072 IC3 : VK8077 (programmed PIC10F200-I/PG)

Enclosure assembly 31. Assembly of the enclosure Refer to the included mounting instructions. (A) (B) (C) (D) (E) (F) Mark all holes according to the diagram. Use a 2mm drill to pre-drill the holes Mark the two holes for the speakers, as indicated. Mark the hole for the reflex tube, as indicated Carefully cut-out the holes using an electric jigsaw If necessary, smooth the edges with sanding paper Mark the position of the wooden supports for the heatsink. (5mm from edge) Cut 4 pieces of 10x15mm wood (2 x 174mm, 2 x 131mm) Pre-drill 2 holes in each wooden support, 20mm from edge and in the center Pre-drill two 3,5mm holes in the backside of the housing according to the diagram. (G) - Fix the wooden supports using two screws and glue. - Assemble the enclosure, according to the drawings 1 to 3 - Fix the bass reflex tube, according to drawing 4 (H) Drawing 1 : - Position both speakers in such a way that their connectors face each other. Mark the holes and remove the speakers. - Pre-drill the holes with a 2mm drill. Drawing 2 : - cut 20 cm red and 20 cm black wire. Solder the red wire to the '+' terminal of a speaker, solder the black wire to the '-' terminal of the speaker. Drawing 3 : - Put some silicone adhesive round the speaker hole closest to the bass tube. Fix the speaker using the supplied 25mm screws. - Solder the red wire from the mounted speaker and the remaining red wire to the '+' of the second speaker. - Solder the black wire from the mounted speaker and the remaining black wire to the '-' of the second speaker. - Guide the red and black wire trough the 3.5mm holes of the enclosure (6). - Put some silicone adhesive round the speaker hole closest to the bass tube. Fix the speaker using the supplied 25mm screws. 23

Enclosure assembly (I) (J) - Fix the speaker wires with some glue and trim them to a length of 20cm - Slide an insulating sleeve over both wires. Solder a connector to both wires and slide the insulating sleeves over the connector. - Put the enclosure on its feet and fix the 4 plastic feet by means of a 23mm screw. - put the heatsink in place and mark the 10 holes. - remove the heatsink - pre-drill the holes with a 1.5mm drill - connect the red speaker wire to the connector marked 'LS+' - connect the black speaker wire to the connector marked 'LS-' - Carefully put the amplifier module in place. - Fix the heatsink using ten 10mm black screws 24

Placement 32. Placement For best results, experiment with different positions. We recommend to put the unit between the main speakers. The closer to a wall or corner, the higher the efficiency (volume) will be, at the cost of a reduced sound quality. Remark: The unit is not magnetically shielded. Do not operate the unit in the close vicinity of CRT television sets or magnetic media. Central position : Speaker L Subwoofer Speaker R Decentral position : Speaker L Subwoofer Speaker R 25

Connection 33. Connection Just below the power switch you will notice two AC voltage indications (120VAC- 235VAC). Strike out the one that does not apply with a black permanent marker. Use the supplied cord to connect the unit to the AC power grid. If necessary, cut the plug and replace it with a plug (not incl.) that fits your outlets. The audio inputs accept either a line level signal or a speaker level signal. LINE LEVEL SIGNAL SUBWOOFER AMPLIFIER - PREAMP - RECEIVER -... L R LINE IN SPEAKER IN L R ADJ. Line OUT If your audio system is equipped with an adjustable line level output, you can connect it to the 'LINE IN'-inputs of the subwoofer. SPEAKER LEVEL SIGNAL - + LINE IN SPEAKER IN L R L R To speaker L To speaker R If your system is not equipped with an adjustable line level output, connect the 'SPEAKER-IN'-inputs in parallel with the main speaker outputs of your amplifier. 26! Never use both inputs simultaneously

34. Use Turn the volume control (OUTPUT LEVEL) fully counter clockwise before first power-on. Turn-on the 'POWER'-switch. The 'POWER'-led will light. The unit will either immediately turn on ('ON'), or wait for an incoming audio signal ('AUTO-ON'), depending on the position of the 'MODE'-switch. If 'AUTO-ON' has been selected, the unit will automatically turn-on when an audio signal is present. If the audio signal is absent for a while (e.g. because the source has been turned off), the unit will return to the standby mode. Put on your favourite music and adjust the volume of the main speakers. Adjust the volume control of the subwoofer (OUTPUT LEVEL) to an appropriate level. You can adapt the response curve to your personal taste by turning 'FILTER ADJUST'. Make sure to try both positions of the 'PHASE'-switch. Only one position will give the best result. Use 27

PCB 35. PCB 28

Schematic diagram 36. Schematic diagram PSU : BLUE YELLOW GREY RED SK7 SK8 SK9 SK10 GND D9 D8 D10 D7 D5 1N4007 D6 1N4007 C34 100µ F/50V GND R33 560 ZD1 5V1 GND C27 10µ F GND D2 1N4148 T1 BC547 4x1N4007 GND C30 100Á/50V C31 100µ F/50V R31 820/0.6W ZD4 15V ZD3 15V R32 820/0.6W R38 2K7 0.6W C32 100µ F/50v C33 100µ F/50V +15V -15V C19 GND auto C8 100n GND R37 10K 10n 8 3 5 RY1 LD1 POWER R35 10K GND 4 3 2 1 SK11 2 VDD GP3/MCLR/VPP GP2/T0CLKI/FOSC4 GP1/ICSPCLK 4 GP0/ICSPDAT VSS 7 IC3 PIC10F200-I/PG GND blue yellow RELAY VR5V242C ON R34 LD2 10K remote power/on leds bridge if not connected SW2 SW TS-4 R36 10K R39 10K R40 100K GND GND 29

Schematic diagram Power stage : yellow blue amp C14 47p R43 47K GND C28 10µ F D14 1N5404 D13 1N5404 D12 1N5404 D11 1N5404 GND BC640 R47 3K3 R42 100R ZD5 ZB9V1 C38 4700µ F/50V GND C37 +40V 4700µ F/50V R52 3K3 R49 3K3 T3 R48 T4 BC640 680R C36-40V 470µ F/16V +40V C9 100nF C10 100nF -40V C35 100µ F/50V R50 3K3 C15 47p R41 33K +40V LD3 LED3RL R53 1K5 R54 3K3 R55 680 RV3 Bias adj. 1K R56 1K C16 47p T6 BC639-40V T7 BC547 D15 1N4148 R44 330R T2 BC547 D3 1N4148 T5 BC557 D4 1N4148 C12 680p R57 R58 47R 220R R46 47R R45 220R C11 680p +40V T9 TIP142 Bias current (cold) 10-15mV over R60 R60 0.47 / 5W SK5 R59 0.47 / 5W C13 47nF R51 10 SK6 T8 TIP147 GND GND -40V LS+ LS- 30

Schematic diagram Filter section : SK2 Low in (L) SK1 Low in (R) SK3 High in (L) SK4 High in (R) SK12 Connect to chassis ground C1 390p C2 390p R10 R11 4K7 4K7 R8 1K R6 4K7 R3 4K7 R4 1K R62 470 R9 1K R5 1K R1 22K R2 22K R12 22K R13 22K filter C24 22n +15V R17 3 8 IC1A IC1B Level TL072 2 R16 10K 5 TL072 RV1A 10µ F 4 1 R15 22K 6 22K 7 C26-15V R7 47K (gain:=x2) SW1 SW TS-4 0/180 R18 1K C7 100n +15V C3 100n +15V C5 100n R30 100K 3 2 IC2A TL074 R21 1M -15V C4 100n -15V C6 100n R20 1K C29 22µ F/63V C22 4n7 22n C23 R25 390K 10 9 IC2C TL074 8 R22 33K RV2B 50k log Filter slope adj R14 33K RV2A 50k log High pass (30Hz) C21 68n Low pass R24 100K 1 C20 47n C25 R27 10µ F 470 R29 100K R19 10K ZD2 5V1-15V 12 13 11 IC2D TL074 4 +15V C18 100p C17 1n R28 15K auto D1 BAT85 14 R23 1K (*) 5 6 IC2B TL074 R26 15K amp filter 7 R61 1K8 amp (*) (*) Select operation mode: Subwoofer: R61: not mounted R23: 1K Full range: R61: 1K8 R23: not mounted Full range with 6dB bass boost: R61: 1K8 R23: 1K 31

VELLEMAN KIT NV Legen Heirweg 33 9890 Gavere Belgium Europe Info?: http://www.velleman.be Modifications and typographical errors reserved Velleman Kit nv H8077IP - 2006 - ED1 5 410329 359676