DE-ESSER
MODEL 263A
OPERATION MANUAL
dbx Professional Products
8760 South Sandy Parkway
Sandy, Utah 84070
Telephone (801) 568-7660
FAX (801) 568-7662
All trademarks are property of their respective companies.
This manual is part number 18-2112-A
© Copyright 1995 by dbx Professional Products
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
ATTENTION:
WARNING:
EQUIPMENT TO RAIN OR MOISTURE.
CAUTION:
(OR BACK). NO USER SERVICABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT REMOVE COVER
This symbol, wherever it appears, alerts
you to the presence of uninsulated dangerous
voltage inside the enclosure - voltage that
may be sufficient to constitute a risk of
shock.
RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR
This symbol, wherever it appears,
alerts you to important operating and
maintenance instructions in the
accompanying literature. Read the
manual.
¨
A Harman International Company
MANUAL CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
I
NSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Q
UICK SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
W
ARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
O
PERATING CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C
ONNECTING THE 263A TO YOUR SYSTEM . . . . . . . . . . . . . . . . . . . . . . 5
A
BOUT DE-ESSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
T
ECHNICAL SUPPORT / FACTORY SERVICE . . . . . . . . . . . . . . . . . . . . . . 12
S
PECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
OPERATION MANUAL
MODEL 263A
INTRODUCTION
Congratulations on choosing the dbx 263A De-Esser. The 263A provides traditional dbx sonic quality and
performance for the working musician, DJ, studio operator or anyone who needs a friendly
compressor/de-esser. We recommend that you take a moment and read through the manual as it provides information that will assist you in using your unit to its fullest potential.
Common De-Essing Applications:
❍ Reduce sibilance
❍ Modifying high frequency levels
❍ Exaggerate effects
INSPECTION
Verify that the 263A package contains the following:
❍ 263A Unit
❍ AC Power Cord
❍ Operation Manual
❍ Registration Card
QUICK SETUP
To get your unit up and running as quickly as possible, do the following steps. For more detailed information, refer to the specified pages.
❍ Unpack and Inspect the 263A Package. Page 2
❍ Connect the 263A to Your System. Page 5
❍ Set Levels and Controls as Needed. Page 10
¨
PROFESSIONAL PRODUCTS
OPERATION MANUAL
WARRANTY
This warranty is valid only for the original purchaser and only in the United States. We warrant dbx products against defects in material or workmanship for a period of two years from the date of original purchase for use, and agree to repair or, at our option, replace any defective item, except external power
transformers, without charge for either parts or labor.
IMPORTANT: This warranty does not cover damage resulting from accident, misuse or abuse, lack of
reasonable care, the affixing of any attachment not provided with the product, loss of parts, or connecting
the product to any but the specified receptacles. This warranty is void unless service or repairs are performed by an authorized service center. No responsibility is assumed for any special, incidental or consequential damages. However, the limitation of any right or remedy shall not be effective where such is prohibited or restricted by law.
Simply take or ship your dbx product prepaid to our service department. Be sure to include your sales slip
as proof of purchase date. (We will not repair transit damage under the no-charge terms of this warranty.)
dbx will pay return shipping.
NOTE: No other warranty, written or oral is authorized for dbx products.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to
state. Some states do not allow the exclusion of limitations of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above exclusion and limitations may not apply to
you.
OPERATION MANUAL
MODEL 263A
OPERATING CONTROLS
Front Panel
HIGH FREQUENCY or BROADBAND LEDÕs and pushbutton:
This button controls the pro-
cessing bandwidth and should be switched according to what works better sonically -- which usually means High Frequency for performance or recording and Broadband for mixing. See the discussion About De-Essing, p.10.
GAIN REDUCTION LEDs: These 12 LEDs show in decibels how much de-essing is taking place.
GAIN REDUCTION/DE-ESSER slider: Moving this slider to the right, in the MORE direction,
increases the amount of sibilance -- excessive ÒessÓ sounds -- reduction. Start in the middle,
which is a good choice for the majority of situations. WeÕll discuss this in detail later.
FREQUENCY: This knob varies the circuit for specific sibilance frequency ranges. Start
around 4 kHz and adjust by ear; discussion later.
Hi-Z MIC INPUT jack: This connects to the 263AÕs low-noise FET preamp. Anything plugged into
this jack overrides the rear input. ThereÕs enough gain that virtually all high-impedance mics can
be plugged in directly; a trim is on the rear for very hot ones.
Rear Panel
INPUT / OUTPUT Jacks :
These jacks are for a line-level input and output and are the standard 2-
circuit (ÒmonoÓ) 1/4Ó phone type, where the tip carries the signal and the sleeve carries the
ground.
Hi-Z trim: This control sets the gain of the preamp for the microphone input (see front panel). The
gain is set at the factory at +20dB (all the way right, or clockwise) and shouldnÕt be changed
unless your mic output is very hot. All the way left (ccw) is unity (0dB) gain.
¨
PROFESSIONAL PRODUCTS
OPERATION MANUAL
263A
HIGH
FREQUENCY
BROADBAND
INPUT
-20 -18 -16 -14 -12 -10
MORE
OUTPUT
Hi-Z
TRIM
-8 -6 -4 -3 -2 -1
GAIN REDUCTION
DE-ESSER
PROFESSIONAL PRODUCTS
A HARMAN INTERNATIONAL COMPANY
SALT LAKE CITY, UTAH
ALL CIRCUIT DESIGNS ©
IN THE YEARS 1979-1988
3,681,618 4,403,199 3,714,462 4,409,5004,097,767
4,425,551 3,789,143 3,377,7924,329,598 4,473,795
MADE IN USA
MODEL 263A
US PATENTS
4,101,849 4,136,314
1.8k
800Hz4k8kHz
FREQUENCY
¨
2.5k
Hi-Z MIC
INPUT
120 V 60 Hz
18 WATTS