JBL SDEC-3000 manual Speaker Sound Check, Speaker Phase Test, Main Speakers, Surround Speakers

7 Speaker Sound Check

Use the circulating noise generator of the Surround Processor to confirm that all channels have output and that each speaker is connected to its corresponding channel.

8 Speaker Phase Test

This procedure uses the Surround Processor to route the phase tester's output to the appropriate channel for test. Using a "Y" adapter, connect the phase tester's output to both channels of the TAPE or AUX input or any available analog input. Select the input making sure that the processor is set to the analog input you have selected, use the Surround Processor's volume control to set the test level. Select PARTY or 5/7 Channel Stereo Mode to route the test signal to all speakers. It may be necessary to adjust the volume or mute certain channels to get a clear and accurate test result.

Synthesis Four:

L-C-R Tweeters (-)

L-C-R Mid-range (-)

L-C-R Mid-bass drivers (+) Subwoofers (+)

Synthesis Project Array:

(except Array 880) L-R UHF (+)

L-R Horns (+)

L-R Mid-bass drivers (+) Subwoofers (+)

Array 880

C UHF (-)

C HF (+)

C Mid-bass drivers (+)

8.1 Main Speakers

Use the phase tester to confirm the following driver polarities of the L-C-R and subwoofers

Synthesis Everest:

L-C-R UHF (+)

L-C-R Horns (+)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

Synthesis K2 S9800:

L-C-R UHF (+)

L-C-R Horns (-)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

Synthesis Atlas SK2-1000:

L-C-R UHF (+)

L-C-R Horns (-)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

Synthesis One Array:

L-C-R UHF (-)

L-C-R Horns (+)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

Synthesis Two Array:

L-C-R UHF (-)

L-C-R Horns (+)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

Synthesis Array Three:

L-C-R UHF (-)

L-C-R Horns (+)

L-C-R Mid-bass drivers (+)

Subwoofers (+)

8.2 Surround Speakers

8.2.1S4Ai configured as Bipole (default)

The S4Ai can be used as a bipole, dipole or a direct radiating point source speaker. The default as shipped is bipole. Other bipole speakers would be similar.

Figure 15.

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SDEC -X000 DACS Calibration Manual v1.0.doc