dbx Pro dB12 owner manual Introduction, Front Panel, Rear Panel

dB12
	Owner’s
ACTIVE DIRECT BOX	Manual

®

8760 South Sandy Parkway • Sandy, Utah 84070

Phone: (801) 568-7660 • Fax (801) 568-7662

Int’l Fax: (801) 568-7583

E-mail us at: customer@dbxpro.com

or visit us on the web at: www.dbxpro.com

Printed 3/2008

db12 Owner’s Manual 18-XXXX-A

©2008 Harman International Industries, Incorporated, all rights reserved.

18-0556-A

DECLARATION OF CONFORMITY

Manufacturer’s Name: dbx Professional Products

Manufacturer’s Address: 8760 S. Sandy Parkway Sandy, Utah 84070, U.S.A.

declares that the product:

Product name:	dB12
Product option:	None

conforms to the following Product Specifications:

Safety	IEC 60065 (7th ed. 2001) Not
	applicable, SELV Device
EMC	EN 55013	(2001+A1)
	EN 55020	(1998)

Supplementary Information:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC as amended by Directive 93/68/EEC.

	Director of Engineering - dbx
	8760 S. Sandy Parkway
	Sandy, Utah 84070, U.S.A.
	Date: February 21, 2008
European
Contact:	Your local dbx Sales and Service Office or
	Harman Music Group
	8760 South Sandy Parkway
	Sandy, Utah, 84070 U.S.A.
	Ph: (801) 566-8800
	Fax: (801) 568-7583

Warning

For your protection, please read the following: Important Safety Instructions

1.Read these instructions.

2.Keep these instructions.

3.Heed all warnings.

4.Do not use this apparatus near water.

5.Clean only with dry cloth.

6.Do not block any ventilation openings. Install in ac- cordance with the manufacturer’s instructions.

7.Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

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

9.Unplug this apparatus during lightning storms or when unused for long periods of time.

10.No user serviceable parts inside. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid 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.

11.WARNING: To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

12.Refer to labels on the unit, including bottom cover, or other markings and pertinent information.

Introduction

Congratulations on your purchase of the dB12 Active Direct Box. The dB12 offers all the benefits of a premium-quality Direct Box while preserving the sonic integrity and true characteristics of the signal source with its custom dbx mu-metal-shielded audio transformer, high-quality Neutrik® connectors, and low-noise circuitry. The dB12 includes a pad switch for instrument, line and even speaker level signals. And you can take even more control of your sound by utilizing the polarity invert switch to set the phase rela- tionship between the direct and mic’d sound.

The dB12 Features
•	Premium Performance	•	Balanced XLR Lo-Z Output
•	Rugged Design	•	3-Way 0/20/40 dB Pad Switch
•	Stackable Chassis with	•	Flat/High-Cut Filter Switch
	Durable Rubber Foot	•	Output Polarity Invert Switch
•	Gold-plated Neutrik® XLR Connector	•	Ground Lift Switch
•	Premium Chrome Toggle Switches	•	Green LED Phantom Power Indicator
•	Hi-Z ¼" Input Jack	•	+48V Phantom Powered Operation
	Parallel ¼" Thru Jack	•	Low-Noise Active Circuitry
	Transformer Isolated

•Premium Shielded Custom dbx Transformer

Front Panel

INPUTTHRU

PAD

0dB

20dB 40dB

1 2 3

Rear Panel

	OUTPUT
PIN 1	POLARITY	FILTER
LIFT	INVERT
POWER
GND	NORMAL	FLAT

1 2 3 4 5

Front Panel

1.INPUT

Connect your signal source to this 1/4” unbalanced T/S connector.

2.PAD

Select a 0dB, 20dB, or 40dB pad with this switch. Allows connection to a wide range of input signal levels.

3.THRU

Connect your onstage amplifier here (optional). This 1/4” unbalanced T/S connector is wired in parallel with the input.

Rear Panel

1.POWER LED

Lights when receiving power from phantom power.

2.PIN 1 (LIFT/GND)

By switching to the LIFT position, the internal connection to the output pin 1 is removed, isolating the dB12’s grounding system from the rest of the system. This eliminates many “hum” or “buzz” problems due to ground loops.

3.OUTPUT

Connect this balanced XLR connector to an XLR input on your mixer.

4.POLARITY (INVERT/NORMAL)

When in the INVERT position, this switch swaps pin 2 and pin 3 of the XLR jack, making pin 3 hot.

5.FILTER ( / FLAT)

When in the “” (filter) position (and the PAD switch is set to 40 dB), this switch applies a high cut filter to roll off high frequencies (commonly used in conjunction with the 40 dB pad on an amplifier output signal to roughly duplicate the sound of a mic’d speaker).