Installation manual

DTS-6 Installation Manual Section 7: Diagrams
7-39
Notice to Field Technicians
Subject: UltraStereo Interface to DTS-6 July 24, 1995
A problem has been identified in the UltraStereo DTS-10B board.
The UltraStereo audio breakout board, DTS-10B, has the left surround and the mono surround
outputs tied together. This lowers the left surround’s output level and rolls off its high end when
the DTS-6 is set for split (stereo) surrounds.
Only the DTS-10B (shown below), WITH NO REV. LETTER, requires modification. Boards
marked with a yellow dot have been reworked by DTS.
If you have a DTS-10B board that has no Rev. letter, do the steps below:
1) Unplug the JM21 ribbon cable connector from the DTS-10B board. Remove the DTS-
10B board from the back of the UltraStereo processor.
2) On the DTS-10B board, cut off pin 18 (as shown). Cut the pin as close to the board as
possible.
3) Reconnect the DTS-10B board to the UltraStereo processor and the JM21 connector.
4) Recalibrate the left surround SPL level using the DTS REV. D (
or Rev. C
) SETUP DISC
or DTS EMPIRICAL TEST DISC. See Section IV, “Setting the DTS-6 Levels”. Verify
all channels have proper SPL settings.
Please direct any questions about this modification to DTS Field Services [phone].