CBT36K Assembly Manual
Page
51
of 89
Disconnect the amplifier from the mid-bass drivers
and connect it to the tweeters instead. Re-adjust
the amplifier volume if necessary to maintain 3.0 V
output. Measure the voltage across each tweeter
module,
not an individual tweeter,
and record the
voltage readings for all 18 modules. Compare your
results to those shown in the next table.
9.2.5. Tweeter Module Voltage Probe Points:
Above is a close up of the probe points for the
tweeter module. Start with tweeter module 1 and
measure the voltage across all 18 modules by
following the steps in the next subsection. Even
though some modules are in parallel, it is a good
idea to measure the voltage across each module.
9.2.6. Attenuation Voltage Level Table:
For a 3.0 Volt input the voltage reading for each
bank should be:
Bank 1: 1.00V +/- 0.1V (0 dB)
(Driver or Tweeter module 1, 2, 3, 4, 5, 6)
Bank 2: 0.75V +/- 0.1V (-2.5 dB)
(Driver or Tweeter module 7, 8, 9, 10)
Bank 3: 0.6V +/- 0.1V (-4.5 dB)
(Driver or Tweeter module 11, 12, 13, 14)
Bank 4: 0.4V +/- 0.1V (-8.0 dB)
(Driver or Tweeter module 15, 16)
Bank 5: 0.28V +/- 0.1V (-11.0 dB)
(Driver or Tweeter module 17, 18)
Retrace wiring and verify that the resistors are in
the correct location if you find voltage errors.
