
e. Surround Equalization Alignment (Cat. No. 441)
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| Indication |
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No. |
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6 |
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| Cat. No. |
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| 441 |
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| dB | |
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| signal |
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| +10 | |
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| present |
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| tp |
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| D I P |
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| Subwoofer |
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| on |
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| cut |
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| +5 | |
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| auto | freq |
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| Dolby |
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| off | Q |
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| opt gain |
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| surr |
| mag/dig |
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| gain |
| gain |
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| 0 | ||
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| treble |
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| Surround |
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| cut |
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| mid | freq |
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| Q |
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| Left |
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| bass |
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| tp |
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| treble |
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| cut |
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| Surround |
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| .05 | .1 | .2 | .4 | .8 | 1.6 | 3.15 | 6.3 | 12.5 | kHz | |
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| mid | freq | ||||||||||||
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| Q |
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| Right |
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| bass |
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| gain |
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| gnd |
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| signal |
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| present |
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7 |
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| Cat. No. |
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| 441 |
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| dB |
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| signal |
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| +10 | ||
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| present |
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| tp |
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| Subwoofer |
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| on |
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| cut |
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| +5 | ||
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| auto | freq |
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| off |
| Q | Dolby |
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| opt gain |
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| surr |
| mag/dig |
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| gain |
| gain |
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| 0 | ||
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| treble |
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| Surround |
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| cut |
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| mid | freq |
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| Left |
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| Q |
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| bass |
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| tp |
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| treble |
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| Surround |
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| cut | .05 | .1 | .2 | .4 | .8 | 1.6 | 3.15 | 6.3 | 12.5 | kHz | |
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| mid | freq |
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| Q |
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| Right |
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| bass |
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| gain |
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| gnd |
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| signal |
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| present |
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8 |
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| Cat. No. |
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| 441 |
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| signal |
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| dB | ||
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| present |
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| tp |
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| +10 |
| Subwoofer |
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| on |
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| cut |
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| auto | freq |
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| +5 | ||
| off |
| Q |
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| DESIRED |
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| opt gain |
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| Dolby |
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| RESPONSE |
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| surr | mag/dig |
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| gain | gain |
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| treble |
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| 0 | ||
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| Surround |
| cut |
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| mid | freq |
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| Q |
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| Left |
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| bass |
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| tp |
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| treble |
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| cut |
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| .05 | .1 | .2 | .4 | .8 | 1.6 | 3.15 | 6.3 | 12.5 | kHz | |
| Surround |
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| mid | freq |
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| Q |
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| Right |
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| gain |
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| gnd |
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| signal |
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| present |
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9 | REPEAT | 6 → 8 |
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e.Surround Equalization Alignment (Cat. No. 441) Notes
Turn the freq control so that the notch is located over the peak noted in the previous step.
Adjust the Cut and Q controls for the flattest response in this part of the spectrum.
Adjust the treble control on the Cat. No. 441 card for the best approximation to the desired response shown.
The treble and mid equalizer controls interact. Repeat the adjustments until no further adjustment is required and you have attained the optimum frequency response.