Requisite Audio Engineering L2M MKIII M/S VERSION Manual del operador descargar pdf (Pagina 15)

FRONT PANEL CALIBRATION POINTS (continued)

STEREO ADJ - CALIBRATION PROCEDURE:

•

Verify that ZERO ADJ, GR TRACK and VU ADJ are all calibrated. If not, follow the above in-

structions for getting them to read accurately.

•

Set PEAK REDUCTION & LIMITER RESPONSE fully-counterclockwise.

•

Set OUTPUT LEVEL, LIMITER FEEDBACK & STEREO LEVEL RIDE to UNITY.

•

Set RATIO to 3:1 and IN/BYPASS to BYPASS.

•

Determine that ZERO ADJUST has been made (see above).

•

Inject a +10dB 1-kHz tone (both channels). Verify level using an external DMM or suitable me-

ter. 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.

•

Select +10 on the METER SELECT and observe that the VU METER reads 0dB.

•

Select LINK on PK REDUCTION.

•

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

channels

•

Using METER SELECT, set to GR to see if both meters read -5dBu. The additional 1dB is to

compensate for meter ballistics.

•

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. So 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. It

won’t take much.

THE L2M MKIII M/S VERSION

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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