Akashic Guitar effects circuit lookup

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Oberheim Matrix 6

Category
Ring Mod / Synth· Full Synths Drum Synths and Misc Synth
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Full Synths Drum Synths and Misc Synth

Schematic

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Parts list 251 rows

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Check before you build · 9 values the reader of this schematic was not sure of
  • Whole read is from 72 dpi scans: values on small labels are best readings
  • R20: 4.3M could be 4.7M
  • C8: .001 could be .01
  • U713: DAC part number illegible
  • U738-U740, U742: designators and op-amp type uncertain
  • Voice S/H resistors (8 per voice): designators and values illegible, 1M assumed
  • VCA2 1M resistor: designator printed as RX13, clashes with the noise 3.3K RX13
  • CX14-CX29: alternating .033/.0068 read from the pattern, individual labels barely legible
  • R4: 12.0K 1% could be 12.1K
RefValueNormalizedTypeNotes
Resistors 86
R114.0K14k1%; read from the schematic by eye
R210.0K10k1%; read from the schematic by eye
R412.0K12k1%; read from the schematic by eye
R520.0K20k1%; read from the schematic by eye
R6133K133k1%; read from the schematic by eye
R7182K182k1%; read from the schematic by eye
R811.8K11.8k1%; read from the schematic by eye
R94.7K4.7kread from the schematic by eye
R10100K100kread from the schematic by eye
R11100K100kread from the schematic by eye
R1210K10kread from the schematic by eye
R13100K100kread from the schematic by eye
R1410K10kread from the schematic by eye
R15100K100kread from the schematic by eye
R1610K10kread from the schematic by eye
R17220K220kread from the schematic by eye
R184.7K4.7kread from the schematic by eye
R19100K100kread from the schematic by eye
R204.3M4.3Mnoise amp feedback; read from the schematic by eye
R214.7K4.7kread from the schematic by eye
R22100K100kread from the schematic by eye
R233.9K3.9kread from the schematic by eye
R241K1kread from the schematic by eye
R251M1Msample-and-hold, U704; read from the schematic by eye
R261M1Msample-and-hold, U704; read from the schematic by eye
R271M1Msample-and-hold, U704; read from the schematic by eye
R281M1Msample-and-hold, U704; read from the schematic by eye
R291M1Msample-and-hold, U704; read from the schematic by eye
R301M1Msample-and-hold, U704; read from the schematic by eye
R311M1Msample-and-hold, U704; read from the schematic by eye
R321M1Msample-and-hold, U704; read from the schematic by eye
R331M1Msample-and-hold, U705; read from the schematic by eye
R341M1Msample-and-hold, U705; read from the schematic by eye
R351M1Msample-and-hold, U705; read from the schematic by eye
R361M1Msample-and-hold, U705; read from the schematic by eye
R3710K10kHFO buffer pull-up; read from the schematic by eye
R3810K10kHFO buffer pull-up; read from the schematic by eye
R3910K10kHFO buffer pull-up; read from the schematic by eye
R4010K10kread from the schematic by eye
R4133K33kread from the schematic by eye
R4233K33kread from the schematic by eye
R43100100read from the schematic by eye
R4468K68kread from the schematic by eye
R4527K27kread from the schematic by eye
R4610K10kread from the schematic by eye
R4710K10kread from the schematic by eye
R481K1kread from the schematic by eye
R491K1kread from the schematic by eye
R50100100read from the schematic by eye
R5168K68kread from the schematic by eye
R5227K27kread from the schematic by eye
R5310K10kread from the schematic by eye
R5410K10kread from the schematic by eye
R551K1kread from the schematic by eye
R561K1kread from the schematic by eye
R57100100read from the schematic by eye
R5868K68kread from the schematic by eye
R5927K27kread from the schematic by eye
R6010K10kread from the schematic by eye
R6110K10kread from the schematic by eye
R621K1kread from the schematic by eye
R631K1kread from the schematic by eye
R64220220read from the schematic by eye
R651.5K1.5kread from the schematic by eye
R6633K33kread from the schematic by eye
R6768K68kread from the schematic by eye
R6833K33kread from the schematic by eye
R6968K68kread from the schematic by eye
×14.7K4.7kpull-up at U711 / FAST#, designator illegible; read from the schematic by eye
RX013.3K3.3kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX024.7K4.7kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX033.3K3.3kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX0410K10kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX0536K36kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX06510K510kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX0710K10kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX0810K10kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX093.3K3.3kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX1010K10kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX1136K36kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX12510K510kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX133.3K3.3kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX141M1Mone per voice, x6 (X = voice number 1-6); read from the schematic by eye
RX2310K10kone per voice, x6 (X = voice number 1-6); read from the schematic by eye
×61M1MVCA2 CV resistor, one per voice; label reads RX13 (clashes with the 3.3K RX13), likely RX15; read from the schematic by eye
×481M1Mvoice S/H resistors, 8 per voice; labels and values illegible, 1M assumed as on sheet 1; read from the schematic by eye
Capacitors 99
C133pF33pread from the schematic by eye
C2470pF470pread from the schematic by eye
C3470pF470pread from the schematic by eye
C4470pF470pread from the schematic by eye
C5.033uF33nread from the schematic by eye
C6.001uF1nread from the schematic by eye
C7.1uF100nread from the schematic by eye
C8.001uF1ncould be .01; read from the schematic by eye
C9.01uF10nread from the schematic by eye
C10.033uF33nU704 S/H; read from the schematic by eye
C11.033uF33nU704 S/H; read from the schematic by eye
C12.033uF33nU704 S/H; read from the schematic by eye
C13.033uF33nU704 S/H; read from the schematic by eye
C14.033uF33nU704 S/H; read from the schematic by eye
C15.033uF33nU704 S/H; read from the schematic by eye
C16.033uF33nU704 S/H; read from the schematic by eye
C17.033uF33nU704 S/H; read from the schematic by eye
C18.0068uF6.8nU704 S/H hold; read from the schematic by eye
C19.0068uF6.8nU704 S/H hold; read from the schematic by eye
C20.0068uF6.8nU704 S/H hold; read from the schematic by eye
C21.0068uF6.8nU704 S/H hold; read from the schematic by eye
C22.0068uF6.8nU704 S/H hold; read from the schematic by eye
C23.0068uF6.8nU704 S/H hold; read from the schematic by eye
C24.0068uF6.8nU704 S/H hold; read from the schematic by eye
C25.0068uF6.8nU704 S/H hold; read from the schematic by eye
C26.033uF33nU705 S/H; read from the schematic by eye
C27.033uF33nU705 S/H; read from the schematic by eye
C28.033uF33nU705 S/H; read from the schematic by eye
C29.033uF33nU705 S/H; read from the schematic by eye
C30.033uF33nU705 S/H; read from the schematic by eye
C31.033uF33nU705 S/H; read from the schematic by eye
C32.033uF33nU705 S/H; read from the schematic by eye
C33.0068uF6.8nU705 S/H hold; read from the schematic by eye
C34.0068uF6.8nU705 S/H hold; read from the schematic by eye
C35.0068uF6.8nU705 S/H hold; read from the schematic by eye
C36.0068uF6.8nU705 S/H hold; read from the schematic by eye
C3710uF10u16V; read from the schematic by eye
C38100pF100pHF oscillator; read from the schematic by eye
C39330pF330pHF oscillator; read from the schematic by eye
C40.001uF1nHF oscillator; read from the schematic by eye
C41.1uF100nHF oscillator; read from the schematic by eye
C42100pF100pHF oscillator; read from the schematic by eye
C43330pF330pHF oscillator; read from the schematic by eye
C44.001uF1nHF oscillator; read from the schematic by eye
C45.1uF100nHF oscillator; read from the schematic by eye
C46100pF100pHF oscillator; read from the schematic by eye
C47330pF330pHF oscillator; read from the schematic by eye
C48.001uF1nHF oscillator; read from the schematic by eye
C49.1uF100nHF oscillator; read from the schematic by eye
C5010uF10u16V, supply; read from the schematic by eye
C51.1uF100nsupply bypass; read from the schematic by eye
C5210uF10u16V, supply; read from the schematic by eye
C53.1uF100nsupply bypass; read from the schematic by eye
C5410uF10u16V, supply; read from the schematic by eye
C55.1uF100nsupply bypass; read from the schematic by eye
C5610uF10u16V, supply; read from the schematic by eye
C5710uF10u16V, supply; read from the schematic by eye
C59.1uF100nsupply bypass; read from the schematic by eye
C60.1uF100nsupply bypass; read from the schematic by eye
C61.1uF100nsupply bypass; read from the schematic by eye
C62.1uF100nsupply bypass; read from the schematic by eye
C6310uF10u16V, supply; read from the schematic by eye
C6410uF10u16V, supply; read from the schematic by eye
C6510uF10u16V, supply; read from the schematic by eye
C6610uF10u16V, supply; read from the schematic by eye
C6710uF10u16V, supply; read from the schematic by eye
C6810uF10u16V, supply; read from the schematic by eye
C6910uF10u16V, supply; read from the schematic by eye
C70.1uF100nsupply bypass; read from the schematic by eye
C71.1uF100nsupply bypass; read from the schematic by eye
CX01470pF470pone per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX02470pF470pone per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX03470pF470pone per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX04.001uF1none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX05.0033uF3.3none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX06.0033uF3.3none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX07.001uF1none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX08.001uF1none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX094.7uF4.7uone per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX10.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX11.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX12.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX13470pF470pone per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX14.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX15.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX16.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX17.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX18.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX19.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX20.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX21.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX22.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX23.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX24.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX25.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX26.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX27.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX28.033uF33none per voice, x6 (X = voice number 1-6); read from the schematic by eye
CX29.0068uF6.8none per voice, x6 (X = voice number 1-6); read from the schematic by eye
Diodes 5
D1DiodeDIODEno part number given; read from the schematic by eye
D2DiodeDIODEno part number given; read from the schematic by eye
D3DiodeDIODEno part number given; read from the schematic by eye
D4DiodeDIODEreference for +5.6V rail, likely zener; no part number given; read from the schematic by eye
D5DiodeDIODEnoise rectifier; no part number given; read from the schematic by eye
Transistors 13
Q151722N51722N5172, noise source; read from the schematic by eye
Q2C27852SC27852SC2785; read from the schematic by eye
Q3C27852SC27852SC2785; read from the schematic by eye
Q4A10052SA1005HF oscillator, drawn A1005; read from the schematic by eye
Q6A10052SA1005HF oscillator, drawn A1005; read from the schematic by eye
Q8A10052SA1005HF oscillator, drawn A1005; read from the schematic by eye
Q5C16752SC16752SC1675, HF oscillator buffer; read from the schematic by eye
Q7C16752SC16752SC1675, HF oscillator buffer; read from the schematic by eye
Q9C16752SC16752SC1675, HF oscillator buffer; read from the schematic by eye
QX1C27852SC27852SC2785, one per voice, x6 (X = voice number 1-6); read from the schematic by eye
QX2C27852SC27852SC2785, one per voice, x6 (X = voice number 1-6); read from the schematic by eye
QX3C27852SC27852SC2785, one per voice, x6 (X = voice number 1-6); read from the schematic by eye
QX4C27852SC27852SC2785, one per voice, x6 (X = voice number 1-6); read from the schematic by eye
ICs 44
U70440514051read from the schematic by eye
U70540514051read from the schematic by eye
U70674HC25974HC259read from the schematic by eye
U70774HC25974HC259read from the schematic by eye
U70874C17474C174read from the schematic by eye
U70974C17474C174read from the schematic by eye
U710TL082TL082read from the schematic by eye
U71140534053read from the schematic by eye
U712TL081TL081read from the schematic by eye
U713??multiplying DAC, part number illegible at this resolution (reads like 7621); read from the schematic by eye
U71574LS37474LS374read from the schematic by eye
U71674LS17474LS174read from the schematic by eye
U71774C4274C42read from the schematic by eye
U71874LS7474LS74read from the schematic by eye
U71974LS3274LS32read from the schematic by eye
U72074HC37474HC374read from the schematic by eye
U72174C4274C42read from the schematic by eye
U72278L0578L05read from the schematic by eye
U723LM311LM311read from the schematic by eye
U724TL082TL082read from the schematic by eye
U72540534053read from the schematic by eye
U726LM381LM381noise preamp; read from the schematic by eye
U72782548254read from the schematic by eye
U72882548254read from the schematic by eye
U72982548254read from the schematic by eye
U73082548254read from the schematic by eye
U73174LS17474LS174read from the schematic by eye
U73274LS16174LS161LS161 or LS163; read from the schematic by eye
U73374LS16174LS161LS161 or LS163; read from the schematic by eye
U73574LS17474LS174read from the schematic by eye
U73674LS16174LS161LS161 or LS163; read from the schematic by eye
U73774LS16174LS161LS161 or LS163; read from the schematic by eye
U738TL061TL061HFO buffer; type reads TL06x; read from the schematic by eye
U739TL061TL061HFO buffer; type reads TL06x; read from the schematic by eye
U740TL061TL061HFO buffer; designator and type uncertain; read from the schematic by eye
U74274LS0074LS00designator uncertain (U74x); read from the schematic by eye
U781TL082TL082output amp; read from the schematic by eye
U782741741output amp; read from the schematic by eye
U79340534053L/R and mute switch; read from the schematic by eye
×174LS0474LS04hex inverter on the HFO counters, designator not printed; read from the schematic by eye
UX01CEM3396CEM3396voice chip, one per voice, x6 (X = voice number 1-6); read from the schematic by eye
UX0240514051one per voice, x6 (X = voice number 1-6); read from the schematic by eye
UX0340514051one per voice, x6 (X = voice number 1-6); read from the schematic by eye
UX0474C3274C32one per voice, x6 (X = voice number 1-6); read from the schematic by eye
Inductors 3
L13-7uH3-7UHadjustable HF oscillator coil; read from the schematic by eye
L23-7uH3-7UHadjustable HF oscillator coil; read from the schematic by eye
L33-7uH3-7UHadjustable HF oscillator coil; read from the schematic by eye
Trimmers 1
×1100K100kU712 offset, ceramic trimmer, no designator; read from the schematic by eye