Akashic Guitar effects PCB lookup
BLENDDRIVEHIHI-MIDSLEVELLOLO-MIDMIDSMID

1590BB · 9 knobs

PCB Guitar Mania

Black Mirror VII

Based on the Darkglass Microtubes B7K Ultra

Category
Overdrive· Versatile Bass Drive
Controls
Blend · Drive · Hi · Hi-Mids · Level · Lo · Lo-Mid · Mids · Mid
Difficulty
Advanced
Price
€14.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

Project overview

Inspired by Darkglass B7K, a bass drive that features all the versatility and sonic possibilities of the craved B7K, with the ability to sculpture your tone even further.

The world of bass pedals has changed in recent years. Bass players became more creative with their sounds, but they also became more demanding when it comes to their equipment. To keep up with this trend, we are offering you the option to build your own Black Mirror Seven. In numerology, seven is deep, intuitive and perfection-seeking, that’s why we believe it’s the best name for this version of Black Mirror series, as it’s an upgrade of an already fantastic model, the Black Mirror B3K.

Introduction

The Black Mirror Seven comes equipped with all the goodies you know and love from the B3K version, but makes it more versatile. With its DI output, it allows you to skip your amp altogether and plug your bass guitar straight to the PA, if you’re playing a gig, or to the audio interface, when you’re in the studio, or trying to record your next big hit in your bedroom. In case you run into problems with ground loop causing noise in your signal, the Seven is equipped with a GROUND LIFT switch that instantly removes the issue. Just like its older brother, Seven comes with the GRUNT switch, which allows the player to choose how much of the low end gets boosted before the clipping stage. The ULTRA-HI switch does the same job as the GRUNT switch, but on the other end of the frequency spectrum, allowing you to fine-tune the presence and clarity.

This version of Black Mirror comes with… SEVEN potentiometers for the ultimate sound design capabilities. These pots are DRIVE, LEVEL, BLEND, HI, HI-MIDS, LO-MID and LO. With DRIVE you dial in the exact amount of saturation you wish to have in your tone. Then you set the overall volume of the signal with the LEVEL control. BLEND is a super useful option which lets you add some of your clean signal to your distorted one in case you need some extra clarity. the EQ section contains 4 pots divided by the frequency spectrum they impact. LO is responsible for the lowest of the frequencies, HI for the highest. LO-MID allows you to change the center frequency between 500Hz and 1KHz, while HI-MIDSdoes the same to the frequency range of 1.5KHz to 3KHz.

With the amount of control the Black Mirror Seven gives you to shape your tone, it’s a crime not to give this at least a try. Even if you don’t intend to create a massive wall of sound with your tru

Schematic

The schematic is in the vendor's build document, page 9. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 116 rows

Report a wrong parse
RefValueNormalizedTypeNotes
Resistors 54
R3510k10k
R363k33.3k
R371m1M
R11m1M
R382k22.2k
R21m1M
R392k22.2k
R310k10k
R40220k220k
R4100k100k
R41220k220k
R51m1M
R422k22.2k
R63k33.3k
R432k22.2k
R7200k200k
R44220k220k
R8470k470k
R45220k220k
R91m1M
R46100k100k
R101m1M
R471k1k
R11470k470k
R481k1k
R126k86.8k
R4910k10k
R131m1M
R5010k10k
R1422k22k
R511k1k
R15330k330k
R52100k100k
R166k86.8k
R53100k100k
R173k33.3k
R5410k10k
R18330k330k
R191k1k
R2010k10k
R211m1M
R22100k100k
R2333k33k
R2410k10k
R2522k22k
R2622k22k
R2747k47k
R2810k10k
R2922k22k
R3010k10k
R3110k10k
R321k1k
R3310k10k
R3410k10k
Capacitors 39
C1100n100n
C21n1n
C3220n220n
C422n22n
C522n22n
C622n22n
C7100n100n
C8220pf220p
C922n22n
C1047pf47p
C114n74.7n
C1247n47n
C13220n220n
C14220pf220p
C16680pf680p
C1722n22n
C181n1n
C192n22.2n
C201n1n
C21100n100n
C23330n330n
C2522n22n
C2622n22n
C271n1n
C2810n10n
C2910n10n
C3047p47p
C3222n22n
C3322n22n
C346n86.8n
C35680pF680p
C381uF1u
C391uF1u
C152u22.2u
C22100uf100u
C24100u100u
C312u22.2u
C362u22.2u
C372u22.2u
Diodes 4
D11n41481N4148
D21n41481N4148
D31n58171N5817
D43mm3MM
Transistors 2
Q1J201J201
Q2J201J201
ICs 6
IC1TL072ACPTL072ACP
IC2TL072ACPTL072ACP
IC34049N4049N
IC4TL072ACPTL072ACP
IC5TL074ACNTL074ACN
IC6TL074ACNTL074ACN
Potentiometers 9
BLEND100KBB100kPotentiometer
DRIVE100KCC100kPotentiometer
HI100KBB100kPotentiometer
HI-MIDS100KBB100kPotentiometer
LEVEL100KAA100kPotentiometer
LO100KBB100kPotentiometer
LO-MID100KBB100kPotentiometer
MIDS100K100kPotentiometer
MID100K100kPotentiometer
Jacks & sockets 1
J201Q1Q1
Other 1
X2RJACKJACK