dbx 120A User Manual Download Page 2

WARNING FOR YOUR PROTECTION

PLEASE READ THE FOLLOWING:

KEEP THESE INSTRUCTIONS

HEED ALL WARNINGS

FOLLOW ALL INSTRUCTIONS

DO NOT USE THIS APPARATUS NEAR WATER

CLEAN ONLY WITH A DRY CLOTH.

DO NOT BLOCK ANY OF THE VENTILATION OPENINGS. INSTALL IN ACCORDANCE WITH THE
MANUFACTURER’S INSTRUCTIONS.

DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTERS, STOVES,
OR OTHER APPARATUS (INCLUDING AMPLIFIERS) THAT PRODUCE HEAT.

ONLY USE ATTACHMENTS/ACCESSORIES SPECIFIED BY THE MANUFACTURER.

UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERI-
ODS OF TIME.

Do not defeat the safety purpose of the polarized or grounding-type plug.  A polarized plug
has two blades with one wider than the other.  A grounding type plug has two blades and
a third grounding prong.  The wide blade or third prong are provided for your safety.  If
the provided plug does not fit your outlet, consult an electrician for replacement of the
obsolete outlet.

Protect the power cord from being walked on or pinched particularly at plugs, conve-
nience receptacles, and the point where they exit from the apparatus.

Use only with the cart stand, tripod bracket, or table specified by the manufacture, or sold
with the apparatus.  When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.

Refer all servicing to to qualified service personnel.  Servicing is required when the appa-
ratus has been damaged in any way, such as power-supply cord or plug is damaged, liq-
uid has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.

POWER ON/OFF SWITCH: The Power switch used in this piece of equipment DOES NOT break
the connection from the mains.

ALL-POLE MAINS SWITCH:  An all-pole mains switch with a contact separation of at least
3mm in each pole shall be incorporated in the electrical installation of the rack or build-
ing. 

FOR UNITS EQUIPPED WITH EXTERNALLY ACCESSIBLE FUSE RECEPTACLE:    Replace fuse with
same type and rating only.

MULTIPLE-INPUT VOLTAGE: This equipment may require the use of a different line cord,
attachment plug, or both, depending on the available power source at installation. Connect
this equipment only to the power source indicated on the equipment rear panel. To reduce
the risk of fire or electric shock, refer servicing to qualified service personnel or equiv-
alent.

This Equipment is intended for rack mount use only.

SAFETY INSTRUCTIONS 

NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD.

WARNING: THIS APPLIANCE MUST BE EARTHED.

The cores in the mains lead are coloured in accordance with the following code:

GREEN and YELLOW - Earth        BLUE - Neutral        BROWN - Live

As colours of the cores in the mains lead of this appliance may not correspond with the coloured markings
identifying the terminals in your plug, proceed as follows:

• The core which is coloured green and yellow must be connected to the terminal in the plug

marked with the letter E, or with the earth symbol, or coloured green, or green and yellow.

• The core which is coloured blue must be connected to the terminal marked N or coloured black.
• The core which is coloured brown must be connected to the terminal marked L or coloured red.

This equipment may require the use of a different line cord, attachment plug, or both, depending on the

available power source at installation.  If the attachment plug needs to be changed, refer servicing to qual-

ified service personnel who should refer to the table below.  The green/yellow wire shall be connected

directly to the units chassis. 

WARNING: If the ground is defeated, certain fault conditions in the unit or in the system to which it is con-

nected can result in full line voltage between chassis and earth ground.  Severe injury or death can then

result if the chassis and earth ground are touched simultaneously.

LIVE

E

NEUTRAL

EARTH GND

CONDUCTOR

L

N

BROWN

BLUE

GREEN/YEL

BLACK

Normal

Alt

WIRE COLOR

WHITE

GREEN

The symbols shown above are internationally accepted symbols that warn of potential hazards with

electrical products.  The lightning flash with arrowpoint in an equilateral triangle means that there

are dangerous voltages present within the unit.  The exclamation point in an equilateral triangle indi-

cates that it is necessary for the user to refer to the owner’s manual.

These symbols warn that there are no user serviceable parts inside the unit.  Do not open the unit.

Do not attempt to service the unit yourself.  Refer all servicing to qualified personnel.  Opening the

chassis for any reason will void the manufacturer’s warranty.  Do not get the unit wet.  If liquid is

spilled on the unit, shut it off immediately and take it to a dealer for service.  Disconnect the unit dur-

ing storms to prevent damage.

C A U T I O N

A T T E N T I O N :

 

R I S Q U E   D E   C H O C   E L E C T R I Q U E   -   N E   P A S   O U V R I R

W A R N I N G :

 

T O   R E D U C E   T H E   R I S K   O F   F I R E   O R   E L E C T R I C

S H O C K   D O   N O T   E X P O S E   T H I S   E Q U I P M E N T   T O   R A I N   O R   M O I S T U R E

R I S K   O F   E L E C T R I C   S H O C K

D O   N O T   O P E N

IMPORTANT SAFETY INSTRUCTIONS

Summary of Contents for 120A

Page 1: ...120A Subharmonic Synthesizer with Modeled Waveform Synthesis User Manual...

Page 2: ...or equiv alent This Equipment is intended for rack mount use only SAFETY INSTRUCTIONS NOTICE FOR CUSTOMERS IF YOUR UNIT IS EQUIPPED WITH A POWER CORD WARNING THIS APPLIANCE MUST BE EARTHED The cores...

Page 3: ...osionsfara vid felaktigt batteribyte Anv nd samma batteri typ eller en ekvivalent typ som rekommenderas av apparattil lverkaren Kassera anv nt batteri enligt fabrikantens instruk tion IMPORTANT SAFETY...

Page 4: ...ntact Info ii 0 3 Warranty ii Section 1 Operation and Appendix 1 1 Rear Panel Connections 1 1 2 Front Panel Connections 1 1 3 Operating Notes 2 1 4 Basic Connection 4 Appendix A 1 Block Diagram 5 A 2...

Page 5: ...INTRO CUSTOMER SERVICE INFO 120A DEFINED WARRANTY INFO INTRODUCTION 120A...

Page 6: ...ge you to experiment and find cre ative ways that the 120A can help you optimize your specific application The 120A s patented modeled Waveform Synthesis process builds a synthesized waveform using th...

Page 7: ...d not collect Do not ship parcel post This warranty is valid only for the original purchaser and only in the United States 1 The warranty registration card that accompanies this product must be mailed...

Page 8: ...120A...

Page 9: ...input section of the 120A offers electronically balanced unbalanced 1 4 connections with a nominal input level of 4dBu and clipping level is at 22dBu into 600 The 120A also offers RCA input connector...

Page 10: ...s are bottoming out making a ticking popping sound or fuses are blowing or your amp is clipping try turning down the 24Hz 36Hz level You may find that a setting produces fine results in one room but p...

Page 11: ...them maximally different If you do reposition your speakers you should also reset any output level controls on the back of the speaker cabinet Many speakers offer a slight HF or MF boost with these c...

Page 12: ...he ampli fication for the main speakers to Channel 1 and Channel 2 Output Jacks Operation without a Subwoofer Set the OUTPUT switch to FULL RANGE and connect the amplification for the main speakers to...

Page 13: ...Block Diagram Appendix 120A Appendix 24 36Hz 36 56Hz A 1 Block diagram 5...

Page 14: ...26 36Hz and 36 56Hz Band Synthesis Level Subharmonics Low Frequency Boost Subwoofer Output Crossover Frequency Select Crossover in out Indicators Power Crossover Bypass Metering Synthesis activity 3 L...

Page 15: ...20A s input and output The best start ing point is to ground the shield of the input cable at the source device leaving it unconnected at the 120A Output Cable Configurations The 120A will drive eithe...

Page 16: ...andy Pkwy Sandy Utah 84070 Phone 801 568 7660 Fax 801 568 7662 Questions or comments E mail us at customer dbxpro com or visit our World Wide Web home page at www dbxpro com A Harman International Com...

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