MM: Zwei Humbucker
Circuit MM1
The simplest circuit enables individual and parallel operation of the two pickups here with two tone controls.
1. Bridge humbucker
2. Bridge humbucker and neck parallel
3. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch, three potentiometers
Wiring diagram with Megaswitch T
Bass with Megaswitch T rotary switch, three potentiometers
Connection of the rotary switch before installation
Wiring after installing the rotary switch
Connections:
position
1 bridge
2 both in parallel
3 neck
connections
1, 2 hot connector neck and tone control neck grinder
3 ̶
4, 8 volume regulator right connection
5, 7 hot connector bridge and tone control bridge wiper
6 ̶
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Circuit MM2
With this circuit, when the switch is in the middle position, both pickups are connected in series for enhanced bass and mids and less treble.
1. Bridge humbucker
2. both humbucker in series
3. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch T, two potentiometers
Wiring diagram with Megaswitch T
Bass with Megaswitch T rotary switch, two potentiometers
Connection of the rotary switch before installation
Wiring after installing the rotary switch
Connections:
position
1 bridge
2 both in series
3 neck
connections
1
2 mass
3 hot connection neck, volume control right connection and tone control slider
4 hot connector bridge and cold connector neck
5, 6, 7, 8 ̶
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Circuit MM3
In the middle position of the switch, the two outer coils of the humbucker are connected in series. Compared to circuit MM2, this leaves more heights.
1. Bridge humbucker
2. outer coils in series
3. Neck humbucker
Switching functions
MM-3A.png
Electrical switching principle
Bass with Megaswitch T two potentiometers
Wiring diagram with Megaswitch T
Bass with Megaswitch T rotary switch, two potentiometers
Connection of the rotary switch before installation
Wiring after installing the rotary switch
Connections:
position
1 bridge
2 outer coils in series
3 neck
connections
1 -
2 mass
3 hot connector neck outer coil, volume control right connector and tone control slider
4 hot connection bridge inner coil and cold connection neck inner coil
5 hot connection bar outer coil and cold connection bar inner coil
6, 7 ̶
8 hot connection neck inner coil and cold connection neck outer coil
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Circuit MM4
In the middle position of the switch, the two outer coils of the humbucker are connected in parallel, which results in increased highs.
1. Bridge humbucker
2. outer coil parallel
3. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch T, two potentiometers
Wiring diagram with Megaswitch T
Bass with Megaswitch T rotary switch, two potentiometers
Connection of the rotary switch before installation
Wiring after installing the rotary switch
Connections:
position
1 bridge
2 outer coils in parallel
3 neck
connections
1 hot connection neck outer coil and cold connection neck inner coil
2 hot connection neck inner coil
3 hot connection bar inner coil
4, 8 volume regulator right connection and tone regulator grinder
5 hot connection bar outer coil and cold connection bar inner coil
6, 7 ̶
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Circuit MM5
A Megaswitch M enables five different switch positions:
1. Bridge humbucker
2. Bridge outer coil
3. both humbucker in parallel
4. Neck outer coil
5. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch M, two potentiometers
Wiring diagram with Megaswitch M
MM-5D.png
Bass with Megaswitch M rotary switch, two potentiometers
Wiring after installing the rotary switch
Connections:
position
1 bridge humbucker
2 bridge outer coil
3 both as humbuckers in parallel
4 neck outer coil
5 neck humbucker
connections
A ... L ̶
M, O hot connection neck inner coil
N hot connection neck outer coil and cold connection neck inner coil
P, Q, S, T ̶
R, X volume control right connection and tone control slider
U, W hot connection bar inner coil
V hot connection bridge outer coil and cold connection bridge inner coil
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Circuit MM6
This is a variant of the MM5 circuit. In position 3, the outer coils of the two humbucker are connected in parallel, which increases the treble.
1. Bridge humbucker
2. Bridge outer coil
3. Outer coils parallel
4. Neck outer coil
5. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch M, two potentiometers
Wiring diagram with Megaswitch M
Bass with Megaswitch M rotary switch, two potentiometers
Wiring after installing the rotary switch
Connections:
position
1 bridge humbucker
2 bridge outer coil
3 both outer coils in parallel
4 neck outer coil
5 neck humbucker
connections
A ... L ̶
M hot connection neck inner coil
N, O hot connection neck outer coil and cold connection neck inner coil
P, Q, S, T ̶
R, X volume control right connection and tone control slider
U, V hot connection bar outer coil and cold connection bar inner coil
W hot connection bar inner coil
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Circuit MM7
This circuit is largely similar to the MM6 circuit, the only difference being that a Megaswitch E is used here
1. Bridge humbucker.
2. Bridge outer coil
3. Outer coils parallel
4. Neck outer coil
5. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch E, two potentiometers
Wiring diagram with Megaswitch
Bass with Megaswitch E rotary switch, two potentiometers
Connection of the rotary switch before installation
Wiring after installing the rotary switch
Connections:
position
1 bridge humbucker
2 bridge outer coil
3 both outer coils in parallel
4 neck outer coil
5 neck humbucker
connections
1 -
2 hot connection neck outer coil
3 volume regulator right connection and tone regulator grinder
4 mass
5 hot connection neck inner coil and cold connection neck outer coil
6 hot connection bar outer coil and cold connection bar inner coil
7 hot connection bar inner coil
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Circuit MM8
Here, in positions 2 and 4, the coils of the humbucker are switched in parallel, which increases the highs.
1. Bridge humbucker coils in series
2. Bridge humbucker coils parallel
3. Both humbucker in parallel, coils in series
4. Neck humbucker, coils in parallel
5. Humbucker, coils in series
Switching functions
Electrical switching principle
Bass with Megaswitch M, two potentiometers
Wiring diagram with Megaswitch M
Bass with Megaswitch M rotary switch, two potentiometers
Connection of the Megaswitch M, first step: contacts on the top (A to L)
Connection of the Megaswitch M, second step after installing the switch: Contacts on the top (M to X). For the sake of clarity, the wires already connected in the first step are not shown here again.
Connections:
position
1 bridge humbucker coils in series
2 bridge humbucker coils in parallel
3 both humbucker in parallel (coils in series)
4 neck humbucker coils in parallel
5 neck humbucker coils in series
connections
A, B ̶
C, E, V hot connection bridge outer coil
D mass
F cold connection bar inner coil
G, I, T hot connection neck inner coil
H ground
J, K ̶
L cold connection neck outer coil
M, N, O hot connection neck outer coil
P, Q, U hot connection bar inner coil
R, X volume control right connection and tone control slider
S, W ̶
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Circuit MM9
This circuit is based on some PRS guitars. A Megaswitch P is used.
1. Bridge humbucker
2. Outer coils parallel
3. Inner coils in series
4. Inner coils parallel
5. Neck humbucker
Switching functions
Electrical switching principle
Bass with Megaswitch P, two potentiometers
Wiring diagram with Megaswitch P
Bass with Megaswitch P rotary switch, two potentiometers
Connection of the rotary switch from the installation
Wiring the rotary switch after installation
Connections:
position
1 bridge humbucker coils in series
2 both outer coils in parallel
3 both inner coils in series
4 both inner coils in parallel
5 neck humbucker coils in series
connections
1 hot connection neck inner coil and cold connection neck outer coil
2 volume regulator right connection and tone regulator grinder
3 hot connection bar outer coil and cold connection bar inner coil
4 cold connection bridge outer coil
5 ground and cold connection neck inner coil
6 hot connection neck outer coil
7 hot connection bar inner coil
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