Akashic Guitar effects circuit lookup
GAINBASSMIDDLETREBLEVOLUMEBRIGHTDEEPMIDSLO-Z/HI-ZGROUND LIFT

1590XX · 10 knobs

HotKits

Crystalline Preamp

Based on the Trace Elliot V-Type

Want a PCB? HotKits sells this PCB from a price list, ordered by message (or by email to alex.hotkits@gmail.com): message HotKits on Facebook.

Controls
Gain · Bass · Middle · Treble · Volume · Bright · Deep · Mids · Lo-Z/Hi-Z · Ground Lift
Price
$16.00in stock

From the vendor

Single-channel tube preamplifier for bass guitar. Excellent clean sound in the best traditions of Alembic F2b and Trace Elliot V-Type. The preamp has a serial effects loop. Three-band EQ with additional switches (Mids, Bright and Deep) allows you to get a wide palette of clean and slightly overdriven tones. Preamp outputs: standard unbalanced, as well as balanced XLR. ECC83/12AX7 or 6Н2П-ЕВ tubes (2 pcs) are used. 6Н2П-ЕВ/12AX7 switchable heater via jumpers on the tube board. Power supply: regulated mains adapter 12 VDC (load current of 1 A or more). To power the tube plates an internal DC-DC high voltage boost power converter is used (Nixie type). The dimensions of the main PCB 100 x 100 mm. Enclosure type: Hammond 1590XX.

Schematic

The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 50 rows

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RefValueNormalizedTypeNotes
Resistors 15
×2470470Metal film resistors 0.6W-S 470 Ohm
×1680680Metal film resistors 0.6W-S 680 Ohm
×21k1kMetal film resistors 0.6W-S 1k
×31k51.5kMetal film resistors 0.6W-S 1k5
×710k10kMetal film resistors 0.6W-S 10k
×110k10kMetal film resistors 0.6W-S 10kRLED
×327k27kMetal film resistors 0.6W-S 27k
×3100k100kMetal film resistors 0.6W-S 100k
×1330k330kMetal film resistors 0.6W-S 330k
×1470k470kMetal film resistors 0.6W-S 470k
×1560k560kMetal film resistors 0.6W-S 560k
×61M1MMetal film resistors 0.6W-S 1M
×110M10MMetal film resistors 0.6W-S 10M
×4100k100kMetal film resistors 1W-S (d3.5 L10) 100k
×110k10kMetal oxide film resistor 1W 10k
Capacitors 14
×1150p150pCeramic disc capacitor 150p 1kVCeramic disc capacitor
×1220p220pCeramic disc capacitor 220p 1kVCeramic disc capacitor
×110n10nCeramic disc capacitor 10n 1kVCeramic disc capacitor
×2100n100nMonolithic ceramic capacitor X7R 100n 50VMonolithic ceramic capacitor
×12n22.2nFilm capacitor (R=5mm) 2n2 63VFilm capacitor
×14n74.7nPolyester film capacitor (R=5mm) 4n7 63VPolyester film capacitor
×247n47nPolyester film capacitor (R=5mm) 47n 63VPolyester film capacitor
×2100n100nPolyester film capacitor (R=5mm) 100n 63VPolyester film capacitor
×147n47nPolyester film capacitor (R=10mm) 47n 400V - 1 pcs Polyester film capacitor (R=10mm) 100n 400VPolyester film capacitor
×2220n220nPolyester film capacitor (R=10mm) 220n 250VPolyester film capacitor
×210u10uElectrolytic capacitor 10µ 16V 85°CElectrolytic capacitor
×347u47uElectrolytic capacitor 47µ 16V 85°CElectrolytic capacitor
×210u10uElectrolytic capacitor 10µ 400V 105°C Low ESRElectrolytic capacitor; d10 h20
×1470u470uElectrolytic capacitor 470µ 25V 105°CElectrolytic capacitor; d10 h14
Diodes 3
×1UF4007UF4007Diode UF4007
×11N40011N4001Diode 1N4001
×11N41481N4148Diode 1N4148
Transistors 3
×1IRF740IRF740Transistor IRF740
×1BC547BC547Transistor BC547
×1BC557BC557Transistor BC557
ICs 2
×1NE555NE555IC NE555DIP8
×1JRC4558JRC4558IC JRC4558DIP8
Inductors 1
×1Inductor CDRH127-221 MC 220uH 1,16AINDUCTOR CDRH127-221 MC 220UH 1,16AInductor CDRH127-221 MC 220uH 1,16A
Potentiometers 3
×2A25kA25kPotentiometer Alpha RV16AF-20-17K-A25k
×2A250kA250kPotentiometer Alpha RV16AF-20-17K-A250k
×1A1MA1MPotentiometer Alpha RV16AF-20-17K-A1M
Trimmers 1
×11k1kTrimmer potentiometer type 3296W 1k
Switches 2
×4Toggle switch SMTS-102-C4 On-OnTOGGLE SWITCH SMTS-102-C4 ON-ONToggle switch SMTS-102-C4 On-On
×1Toggle switch SMTS-102 On-OnTOGGLE SWITCH SMTS-102 ON-ONToggle switch SMTS-102 On-On
LEDs 1
×2Yellow bright (ultra bright) 3mm LEDYELLOW BRIGHT (ULTRA BRIGHT) 3MM LEDYellow bright (ultra bright) 3mm LED
Other 5
×2tube 12AX7/ECC83TUBE 12AX7/ECC83Vacuum tube 12AX7/ECC83or 6H2П-EB
×1XLR connector RC3MDLXLR CONNECTOR RC3MDLXLR connector RC3MDL
×1Heat sink RAD DY-CN-020HEAT SINK RAD DY-CN-020Heat sink RAD DY-CN-02022x15x10
×2Connector PLS-2CONNECTOR PLS-2Connector PLS-2DS1021-1x2
×1Connector PLS-40RCONNECTOR PLS-40RConnector PLS-40RDS1022-1x40R