Output; Rear Panel - dbx 286A Manual De Instrucciones

Mic Preamp/
Processor
286A
15 WATTS
AT TE N T I O N :
PROFESSIONAL PRODUCTS
WARNING:
A HARMAN INTERNATIONAL
COMPANY SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
SALT LAKE CITY, UTAH
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING
MADE IN USA
100V 50/60Hz U.S. PATENTS: 4,234,804 4,316,107 4,329,598 4,331,931 4,403,199
MODEL 286A
120V 60Hz
4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793 5,444,788
MIC PREAMP/PROCESSOR

Rear Panel

percussion). Fairly low EXPANSION RATIO settings (and higher Expander/Gate
THRESHOLDs) work best for downward expansion, whereas higher EXPANSION
RATIO settings (clockwise towards 10:1) work best for gating. If a setting produces
undesirable ÒpumpingÓ readjust the Expander/Gate EXPANSION RATIO and
THRESHOLD settings.
Note: The attack and release rate of the Expander/Gate are program-dependent -- very fast for transient
material (e.g., percussion) and slower for material with slow attack (e.g., vocals).
Readjust as needed to gate out noise -- external, as well as hiss from the unit. The
286AÕs other processing can add substantial gain to a signal, especially at higher set-
tings, thereby increasing the noise floor.

Output

GAIN (dB) Control and CLIP LED: The OUTPUT GAIN control sets the level at
the line output. The OUTPUT GAIN control is especially useful to compensate for
the RMS level changes which result from the 286AÕs processing effects. For exam-
ple, to decrease the overall gain (e.g., when the 286AÕs processing has added too
much gain), simply turn the OUTPUT GAIN control counterclockwise. The OUT-
PUT GAIN can also be used to counter any gain reduction after you have adjusted
the 286AÕs controls for the desired amount of processing; adjust the OUTPUT GAIN
control clockwise, to add gain as needed.
The red OUTPUT GAIN LED (located to the right of the OUTPUT GAIN control)
lights when the 286A Processing Section is clipping; reduce gain via the OUTPUT
GAIN control. Set this control so that the OUTPUT CLIP LED never lights. If the
OUTPUT CLIP LED is still lit, reduce the gain caused by the 286AÕs processors (e.g.,
high Compressor DRIVE settings) or the gain provided by an external processor con-
nected to the INSERT (if any).
R I SK O F ELECTR I C SHO CK
DO NO T O PEN TIP = OUT (286 PREAMP OUT)
RI SQ UE D E CHO C ELECTRI Q UE-N E PAS O UVR IR
TO REDUCE THE RISK OF FIRE OR ELECTRIC
TIP = SEND (286 PREAMP OUT TO EFFECTS)
RING = RETURN (FROM EFFECTS TO 286)
If the meters on your load device (e.g., tape recorder, mixer, etc.) are in the red and
your OUTPUT CLIP LED is not lit, simply reduce the 286AÕs OUTPUT GAIN until
the desired levels are obtained. If your load device is still in the red, reduce its input
attenuators (if available).
MIC INPUT Jack: The 286AÕs MIC INPUT jack supports professional and home
studio microphones by accepting either balanced or unbalanced signal through an
XLR connector. Pins 2 and 3 are symmetrically balanced and floating; thus, either
can be used as ÒHOTÓ without difficulty. Pin 2 is in phase with the TIP of all 1/4Ó
connectors. Pin 1 is connected to the 286AÕs chassis ground.
Note: Use a low impedance mic or a high-to-low impedance matching transformer with a high impedance
mic.
LINE INPUT Jack: Use a 1/4Ó TRS phone plug to connect line level sources to the
286A (e.g., mixer outputs, effects loops, electronic keyboards, etc.). The 286AÕs
LINE INPUT jack accepts either balanced or unbalanced signals. Input impedance is
30k½ unbalanced, 60k½ balanced.
Note: In general, this jack does not support microphones with 1/4" plugs. Use an appropriate 1/4"-to-XLR
adapter and plug the microphone into the MIC INPUT jack.
INSERT
MONO
PLUG
286 PREAMP OUT (MULT)
TIP = PIN 2 =
RING = PIN 3 =
STEREO
SLEEVE = PIN 1=
PLUG
FOR USE AS AN EFFECTS LOOP
+
-
OUTPUT INSERT LINE INPUT
5
MIC INPUT