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Service Test Panel Access for Transducer Testing
The RoomMatch™ module is equipped with a service test panel providing access to individual transducers for troubleshooting and ser-
vice/repair operations. To access the transducer test points, loosen the 2 screws on the panel and slide the panel over the screw heads.
A circuit board with connectors is available as shown in Figure 7. To test transducers for open voice-coil faults, use a digital multimeter
instrument to measure the DC resistance of each transducer. Expected values for normal, operational transducers are listed in Figure 7
below:
Figure 7. Test Panel Wiring Diagram and DC Resistance Values for Individual Transducer
Optional Gain-Shading Kit Installation
An optional gain shading kit (RMSHAD) is available for RoomMatch™ modules to attenuate the lower-3 compression drivers relative
to the upper-3 drivers. This option may provide more uniform coverage in array configurations with large changes in directivity index
from module to module. An electrical diagram for the mid/high compression drivers illustrating the gain shading kit circuit is shown in
Figure 8.
Figure 8. Electrical Diagram of Compression Drivers with Gain Shading Kit
2+
Transformer In (YEL)
Pin 1 0.0dB (DIRECT)
[Transformer Disconnect]
Pin 2 -1.5dB (WHT)
Pin 3 -3.0dB (BRN)
Pin 4 -4.5dB (RED)
Pin 5 -6.0dB (BLU)
Transformer Out (ORG)
Gain Shading Kit
2-
English
Polarity
+ -
Input (YEL)
Ground (BLK)
Transformer
Output (ORG)
Driver
DC Resistance
EMB2 (1)
4.9Ω
EMB2 (2)
EMB2 (3)
± 0.3Ω
EMB2 (4)
EMB2 (5)
4.9Ω
EMB2 (6)
± 0.3Ω
LF10 (Left)
6.3Ω
LF10 (Right)
± 0.7Ω
EMB2
EMB2
EMB2
EMB2
(4)
EMB2
16Ω
(5)
EMB2
(6)
(1)
16Ω
(2)
(3)
Installation and Safety Guidelines
Installation
Page 13
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