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1
Remove screws from back plate of Control
SB2210 cabinet. Keep all parts for re-
assembly.
3
Place back plate on flat surface face down
MTC-SBT300
Installation Instructions
2
Remove back plate from enclosure
WIRE LABELLING IN DIAGRAMS
ORIGINAL WIRES (Being Removed)
A – RED
B - BLACK
TRANSFORMER SECONDARY (Output to Speakers)
C – YELLOW
D – GREEN
TRANSFORMER PRIMARY (From Input Terminals)
E – BLACK
F – RED
G – BLUE
H – YELLOW
I – ORANGE
MULTI-CABLE TO SPEAKER DRIVERS
J – GREEN
K – WHITE
L – RED
M - BLACK
"+" Output
"-" Output
Common
Use for 300W@70V, N/C@100V
Use for 150W@70V, 300W@100V
Use for 75W@70V, 150W@100V
Use for 37W@70V, 75W@100V
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Summary of Contents for JBL MTC-SBT300
- Page 1 MTC-SBT300 Installation Instructions Remove screws from back plate of Control Remove back plate from enclosure SB2210 cabinet. Keep all parts for re- assembly. WIRE LABELLING IN DIAGRAMS ORIGINAL WIRES (Being Removed) A – RED B - BLACK TRANSFORMER SECONDARY (Output to Speakers) C –...
- Page 2 Unplug multi-pin connector from PC board as shown above. Mount transformer on posts, attach with included star washers and nuts and tighten. Remove black wire (B) from input PC board as shown in above drawing. Connect black wire (E - common) from transformer to the open former location of black wire (B) as in above drawing.
- Page 3 Remove red wire (A) from input PC board as shown in Place wire from transformer primary (F, G, H, or I) that above drawing. corresponds to the desired wattage needed to tap (see chart of values on page 1) to the now open former location of the red wire (A).
- Page 4 Conductive parts cannot contact each other or other parts and so that they can’t rattle with vibration. Replace back panel onto back of enclosure and tighten down plate firmly with original screws. JBL Professional 8500 Balboa Blvd Northridge, CA 91329 IS-MTCSBT300 U.S.A.