Specifications

8-2
OK
Rotate the front panel knob until the
desired delay reading is displayed.
Then press the OK key.
You can verify that the delay setting is acceptable by listening to a familiar Dolby
Stereo film which ideally contains both center channel dialogue and some
discernible surround sound. The Dolby Cat. No. 251 SR/Digital “Jiffy” film serves
very well for this purpose. If a stereo film is not available, the delay time can be
checked with a mono film if the film is played in Format 04 Dolby stereo optical
with surround. Make certain all speakers are ON for this test.
While the film is playing, walk around the theater and carefully listen to the
surround speakers when there is center channel dialogue. The dialogue should
appear to be coming from the screen with no significant dialogue coming from the
surround speakers.
If you hear discernible dialogue from the surround speakers, the delay time was
probably set too long.
If you hear an objectionable amount of dialogue from the surround speakers, which
persists regardless of the delay time setting, there is probably severe gain or azimuth
error in the system. Re-check both the Dolby level and the A-chain alignment of the
optical system.
In many films, the surround information is intended for subtle effects and may
provide only a low-level ambience. If the surround level and delay time have been
adjusted as previously described, the surround information will be at the level
desired by the film director. Do not be tempted to increase the surround level
because the effect desired by the film production team may be impaired or
destroyed.