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Speaker Connection Diagram
8
B
A
Cabinet
Cabinet
Amplifier Loading Chart
Cabinet A’s Impedance (ohms)
This chart can help you determine what load (ohms) is present on the amplifier when using multiple cabinets.
- To use this chart with two cabinets (A and B), find cabinet A’s impedance (ohms) column and cabinet B’s
impedance row on the chart. The total load on the amplifier is shown in the box where they meet. For example: If
cabinet A’s impedance is 8 ohms and cabinet B’s impedance is 4 ohms, the total load on the amplifier would be 2.67
ohms.
- To use this chart with three or more cabinets, find the total load for two cabinets and then use the result for
cabinet A’s impedance column. The third cabinet will then be used for cabinet B’s impedance row on the chart.
Find the total load on the amplifier and repeat if more cabinets are used. For example (using 3 cabinets): If the first
cabinet (cabinet A) has an impedance of 16 ohms and the second (cabinet B) has an impedance of 8 ohms, the
total load would be 5.33 ohms. Using this load (5.33) as cabinet A’s impedance and a third cabinet’s (new cabinet
B) impedance of 4 ohms, you would find that the total load on the amplifier is 2.29 ohms. It is not
recommended to use any combination of cabinets that has a resulting load in a shaded area of the chart.
Note:
Cabinet
B’s
Impedance
Total load on amplifier
Note: To prevent overheating and possible loss of signal, do
not use any combination of cabinets that results in a box that is shaded.
Speaker cabinet
loads (ohms) applied
to the amplifier
Alternate Connection Diagrams
DIRECT OUTPUT
SPEAKER OUTPUT
EFFECTS LOOP
SEND
RETURN
FOOTSWITCH
TUNER OUT
GROUND
LIFT
POST EQ
PRE EQ
DESIGNED IN USA
MADE IN CHINA
SERIAL NUMBER
MODEL:GROOVE 1200
2001124
ATTENTION
RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
RISK OF ELECTRIC SHOCKRISK OF ELECTRIC SHOCK
DO NOT OPENDO NOT OPEN
CAUTION
CHASSIS SURFACE HOT
ATTENTION
SUPERFICE DE CHASSIS CHAUDE
BREAKER
1
5
A
1
5
A
=
DIRECT OUTPUT
SPEAKER OUTPUT
EFFECTS LOOP
SEND
RETURN
FOOTSWITCH
TUNER OUT
GROUND
LIFT
POST EQ
PRE EQ
DESIGNEDIN USA
MADEIN CHINA
SERIAL NUMBER
MODEL: GROOVE1200
2001124
ATTENTION
RISQUEDE CHOC ELECTRIQUE-NE PAS OUVRIR
RISKOF ELECTRIC SHOCKRISKOF ELECTRIC SHOCK
DONOT OPENDONOT OPEN
CAUTION
CHASSISSURFACE HOT
ATTENTION
SUPERFICEDE CHASSIS CHAUDE
BREAKER
1
5
A
1
5
A
8 Ohms
8 Ohms
8 Ohms
8 Ohms
Total Load On Amplifier = 2 Ohms
DIRECT OUTPUT
SPEAKER OUTPUT
EFFECTS LOOP
SEND
RETURN
FOOTSWITCH
TUNER OUT
GROUND
LIFT
POST EQ
PRE EQ
DESIGNEDIN USA
MADEIN CHINA
SERIAL NUMBER
MODEL: GROOVE1200
2001124
ATTENTION
RISQUEDE CHOC ELECTRIQUE-NE PAS OUVRIR
RISKOF ELECTRIC SHOCKRISKOF ELECTRIC SHOCK
DONOT OPENDONOT OPEN
CAUTION
CHASSISSURFACE HOT
ATTENTION
SUPERFICEDE CHASSIS CHAUDE
BREAKER
1
5
A
1
5
A
8 Ohms
8 Ohms
8 Ohms
8 Ohms
Total Load OnAmplifier = 2 Ohms
open 16 8 5.33 4 3.20 2.67 2
open open 16 8 5.33 4 3.2 2.67 2
16 16 8.00 5.33 4.00 3.20 2.67 2.29 1.78
8 8 5.33 4.00 3.20 2.67 2.29 2.00 1.60
5.33 5.33 4.00 3.20 2.67 2.29 2.00 1.78 1.45
4 4 3.20 2.67 2.29 2.00 1.78 1.60 1.33
3.20 3.2 2.67 2.29 2.00 1.78 1.60 1.46 1.23
2.67 2.67 2.29 2.00 1.78 1.60 1.46 1.34 1.14
2 2 1.78 1.60 1.45 1.33 1.23 1.14 1.00