AML ezMEQ-500 Assembly Manual Download | Manualshive

Page: 36 / 50

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Fit DIP PCB to top side of Inductor PCB
(using 4mm spacer PCBs)

Assembly Tip:
Use the faceplate to help align
the switch PCBs before soldering
all the pins.

Use the 4mm spacer tool PCBs
to set the height of the DIP PCB
above the Inductor PCB.

Solder 1 pin of each header then
remove the spacer tool and use
the faceplate to check the
alignment.

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Summary of Contents for ezMEQ-500

Page 1: ...ezMEQ 500 Passive Midrange Equalizer Assembly manual Colourbook Issue 2...

Page 2: ...ezMEQ5 500 Colourbook Contents Section 1 Colourbook assembly guide Section 2 Schematics diagrams and PCB Overlays Section 3 Parts List...

Page 3: ...Revisions 1 to 1a Updated for Rev 3 PCB ezMEQ5 500 Colourbook revision history Revisions 1a to 2 Updated for Rev 4 PCB...

Page 4: ...Carefully snap apart the 7 PCB s into individual boards and trim or file off any excess tabs PCB Preparation Main PCB Inductor PCB LF Switch PCB HF Switch PCB Dip Switch PCB Spacer PCB s...

Page 5: ...Diodes D1 D2 D3 1N4007 3...

Page 6: ...R28 10R 1 R27 12R 1 R10 R24 75R 2 R43 270R 1 Resistors...

Page 7: ...R15 R18 470R 2 R38 510R 1 R6 R14 620R 2 R39 1k0 1 Resistors...

Page 8: ...R11 1k2 1 R13 1k5 1 R9 2k2 1 R36 R41 3k0 2 Resistors...

Page 9: ...R19 3k3 1 R33 5k6 1 R35 7k5 1 R7 R16 R30 10k 3 Resistors...

Page 10: ...R8 R25 18k 2 R32 22k 1 R3 R4 R5 33k 3 R17 R20 56k 2 Resistors...

Page 11: ...R29 100k 1 R12 120k 1 R37 180k 1 R40 220k 1 R31 1M0 1 Resistors R23 OMITTED...

Page 12: ...C17 100nF 1 C9 C48 C49 220pF 3 C50 47pF 1 C12 330pF 1 Ceramic Capacitors C3 OMITTED...

Page 13: ...EMC Filters F1 F2 Ferrite Bead 2 CL 1 CL2 100pF C L Network 2...

Page 14: ...C43 C46 2n2F 2 C10 C42 4n7F 2 C7 470pF 1 C41 3n3F 1 Film Capacitors...

Page 15: ...C29 C30 C32 C45 15nF 4 C27 47nF 1 C13 C44 10nF 2 C21 C23 C38 C47 33nF 4 Film Capacitors...

Page 16: ...C34 C35 100nF 2 C19 C33 220nF 2 C22 C25 C36 150nF 3 Film Capacitors C26 82nF 1...

Page 17: ...C31 470nF 1 C24 C37 1uF 2 C37 Mounted on rear C20 1u5F 1 C28 C40 680nF 2 C40 Mounted on rear Film Capacitors C39 330nF 1 C39 Mounted on rear...

Page 18: ...Small Capacitors C1 C5 C6 10uF 50v 3 Positive terminals towards left C14 22uF 63v 1 Positive terminals towards left C16 C18 100uF 25v 2 Positive terminals towards left...

Page 19: ...Small Capacitors and Transistors C11 100uF 63v 1 Positive terminals towards left C15 220uF 10v 1 Positive terminals towards left Q1 Q2 Q3 Q4 BC550C 4 Q6 Q7 BC560C 2...

Page 20: ...Trimmers and Relay R21 R42 500R Top Adjust Trimmer 2 RL1 24 Volt DPCO relay 1 R22 5k Top Adjust Trimmer 1...

Page 21: ...Connectors and M3 Screw points J1 10 Way Box Header 1 Note orientation Note orientation Molex KK Series 8 way 1 Tab towards output transformer M3 M3 Toby Fix PCB screw fittings 4...

Page 22: ...Large Capacitors C2 C4 C8 470uF 35v 3 Positive terminals towards left...

Page 23: ...ang SW4 SW5 GR 03 003 1 6 position 2 pole 1 gang SW2 Toggle Switch DPDT on on Horizontal sub min CK 03 006 Alternative type may be supplied GR 03 013 1 6 position 2 pole 2 gang Mounted in the front po...

Page 24: ...Red Brown Orange Yellow Green Blue Violet IN1 Inductor VTA1445 1 IN2 Inductor VTA1443 1 IN3 Inductor VTA1442 1 NOTE ORIENTATION Must match wire colours written on PCB Brown Red Orange Brown Red Orang...

Page 25: ...the pin numbers on the bottom of the transformer coincide with the numbers written on the PCB These 2 transformers are different ways round from each other If possible lift the transformer about 2mm...

Page 26: ...Orange Yellow Green Blue Violet Heatsink HS1 63mm Heatsink 1 SK129 type 63mm long Using a large soldering iron tip solder to the PCB Tack in place first then check they are vertical before soldering c...

Page 27: ...red Install the TIP3055 on the lower side of the heatsink in position Q5 with its rear side towards the heatsink with a TO247 insulator behind the TIP3055 device Secure in place with an M3 x 10mm scre...

Page 28: ...Brown Red Orange Brown Red Orange Yellow Green Red Brown Orange Yellow Green Blue Violet Ribbon Cable J3 10 Way Ribbon Cable 1 60 mm Pin 1 Marker Pin 1 Marker...

Page 29: ...128 rev 2 M3 x 30mm screws Brown Violet Red Green Blue Orange Black Yellow M3 Nyloc nut M3 x 4mm spacers Plug the output transformer molex connector into molex on the PCB MAKE SURE THAT THE CONNECTOR...

Page 30: ...ed on underside of PCB Fit the power indicator LED to the solder side of the PCB such that the base of the LED aligns with the front edge of the PCB BACK OF PCB Flat of LED Long Leg Align rear edge of...

Page 31: ...ev Log 20mm R1 OM 01 100 1 10k Linear 20mm R2 OM 01 097 1 2k2 Linear 20mm bracket Brown Red Orange Brown Red Orange Yellow Green Red Brown Orange Yellow Green Blue Violet Brown Violet Red Blue Green O...

Page 32: ...PL2 PL4 6 Pin Straight Header 1 X 6 PIN ROWS 2 Fit pin headers to Inductor PCB Brown Red Orange Brown Red Orange Yellow Green Red Brown Orange Yellow Green Blue Violet...

Page 33: ...es to stop the pins coming out Make sure the spindles are in the position shown before fitting pins Just in case they have been accidentally rotated during switch fitting Flat is at this angle Dip Fre...

Page 34: ...Fit pin headers to HF and LF Switch PCBs PL 7 PL8 8 Pin Right Angle header 2 X 4 PIN ROWS 1 PL7 Straight pins goes through PCB PL8 Straight pins goes through PCB...

Page 35: ...Fit HF and LF PCBs to underside of Inductor PCB Assembly Tip Use the faceplate to help align the switch PCBs before soldering all the pins...

Page 36: ...y Tip Use the faceplate to help align the switch PCBs before soldering all the pins Use the 4mm spacer tool PCBs to set the height of the DIP PCB above the Inductor PCB Solder 1 pin of each header the...

Page 37: ...together 1 Using M3x8mm SEMS screws attach the M3 x 35mm spacers to the main lower PCB 2 Using M3 Nyloc Nuts secure the switch upper PCB 2 Plug in the 10 way ribbon cable 3 x M3 x 35mm Spacers fitted...

Page 38: ...to chas s i s Secure PCB assembly to chassis with 5 x M3x8mm Sems screws Front screws can be accessed through holes in upper PCB 1 Remove the protective plastic coating from the chassis if fitted 2 Se...

Page 39: ...0 10 SHARP BROAD 20 30 60 100 HF ATTEN HF BOOST LF ATTEN LF BOOST IN ezP1A 500 3 10 20 5 16 12 10 8 5 4 BANDWIDTH AML UK CPS KCS LOW FREQUENCY HIGH FREQUENCY ATTEN SEL 0 10 0 10 0 10 0 10 SHARP BROAD...

Page 40: ...Lid 1 Remove the protective plastic coating from the lid if fitted 2 Place the lid over and secure with 4 x M3x4mm button head screws using 2mm allen key...

Page 41: ...licks If using a bench power supply the current draw will be about 40 50mA 4 Apply a signal of 0dBu 0 775mV RMS 1kHz Ensure that the EQ is set to bypass switch downwards 5 Measure the output signal an...

Page 42: ...of 3 AML ezMEQ5 500 Gain Stage AML 07 121 Input Hi Input Lo Output Hi Output Lo V Stage 3 Output Stage 4 AML 07 121 rev4 V Ref Negative V Ref Negative Chass Gnd 20th Apr 2021 Filter Input Passive Filt...

Page 43: ...Select Output HF Peak LF Peak 703Hz 1027Hz 523Hz 297Hz 199Hz 4011Hz 4913Hz 2936Hz 2013Hz 1535Hz Start 120mH 280mH 420mH 520mH 625mH 477mH Start Start 145mH 108mH 61mH 34mH 420mH 277mH 302Hz 200Hz 507...

Page 44: ...SUB LF Freq Select 420mH SUB LF Freq Select 280mH SUB LF Freq Select 120mH SUB LF Freq Select 520mH SUB LF Freq Select Cap Common Filter Card Agnd LF Freq Select 420mH LF Freq Select 280mH LF Freq Se...

Page 45: ...L 07 121 5 part set Link to test lower PCB without filter Red Orange Brown Yellow Green Blue Violet Level Trim MOLEX 1 LF Peak Components may become hot during use DIP Freq VTA1445 VTA1443 VTA1442 Red...

Page 46: ......

Page 47: ......

Page 48: ...C14 1 0 00 Cap Pol 0 1 6 3mm Daimeter 220uF 10v C15 1 0 00 Cap Pol 0 1 6 3mm Daimeter 100uF 25v C16 C18 2 0 00 Cap Plate 0 1 Pitch 100nF C17 1 0 00 Cap Wima 0 2 Pitch 0 3 x 0 15 220nF C19 C33 2 0 00 C...

Page 49: ...0 00 Resistor 0 25W 470R R15 R18 2 0 00 Resistor 0 25W 56k R17 R20 2 0 00 Resistor 0 25W 3k3 R19 1 0 00 Trimmer Vert dual layout 500R R21 R42 2 0 00 Trimmer Vert dual layout 5k R22 1 0 00 Resistor 0 2...

Page 50: ...ay 2 Pole Changeover RL1 1 0 00 Connection M3 Fixing Point SC1 15 15 0 00 Solder Switch SW1 1 0 00 Switch C K SubMin DPDT on on SW2 1 0 00 Switch Grayhill 71 12W1P3G SW3 1 0 00 Switch Grayhill 71 6W2P...

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