Requisite Audio Engineering L2M MKIII M/S VERSION Betreibershandbuch PDF herunterladen (Seite 15)

FRONT PANEL CALIBRATION POINTS (continued)

STEREO ADJUST - CALIBRATION PROCEDURE (continued):

•

Inject the +10dB 1-kHz tone to the LINE INPUT. Verify level using an external DMM or suit-

able meter. If your DMM has a dB function, select that. If not, set to A/C and read 2.45VAC

across pins 2&3 of the OUTPUT XLR.

•

Adjust the OUTPUT LEVEL control until the VU METER (top meter) reads 0dB on both units.

•

Select LINK.

•

Increase PEAK REDUCTION (both channels equally) until the VU METER drops to -4dB on

both channels.

•

Observe if both GR meters read -5dBu. The additional 1dB is to compensate for meter ballis-

tics.

•

If one meter reads higher than the other, lower it using the STEREO ADJUST trimmer, on the

front panel. As you bring it down, the other meter may start to come up. Stop at the point

where both channels show equal gain reduction.

ONCE THEPREVIOUS STEPS HAVEBEEN TAKEN, YOU CAN “FINE TUNE” YOUR AD-

JUSTMENT WITH PROGRAM SPECIFIC CALIBRATION IN THE FOLLOWING WAY:

•

Find the portion of program material with the highest peaks and create a 5 to 10 second loop.

•

If your using LIMITER RESPONSE leave that set to the way you want to hear it.

•

Observe which channel is exhibiting the most gain reduction and slowly bring it down until

the two channels match.

STEREO ADJUST - OPERATIONAL NOTE:

Overtime, (perhaps many years) it will become evident that STEREO ADJ will need to be reset

to a higher overall level. The sysmptom will be that PEAK REDUCTION needs to be set to it’s

fully-clockwise position to initiate suﬁcient gain reduction for source material that has a good

deal of level.

THE PAL PLUS MKIII

R e q u i s i t e A u d i o E n g i n e e r i n g! L2M MkIII

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Requisite Audio Engineering L2M MKIII M/S VERSION Betreibershandbuch Seite 15