DBX db10 Handleiding

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Pagina 1/2

Owner’s

Manual

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: dB10

Product option: None

conforms to the following Product Speciﬁcations:

Safety IEC 60065 (7th ed. 2001) Not

applicable, SELV Device

EMC EN 55013 (2001+A1)

Not applicable, all passive components

EN 55020 (1998)

Not applicable, all passive components

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

Read these instructions.

Keep these instructions.

Heed all warnings.

Do not use this apparatus near water.

Clean only with dry cloth.

Do not block any ventilation openings. Install in ac-

cordance 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.

Protect the power cord from being walked on or

pinched particularly at plugs, convenience receptacles,

and the point where they exit from the apparatus.

Unplug this apparatus during lightning storms or when

unused for long periods of time.

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.

WARNING: To reduce the risk of ﬁre or electric shock,

do not expose this apparatus to rain or moisture.

Refer to labels on the unit, including bottom cover, or

other markings and pertinent information.

10.

11.

12.

Introduction

Congratulations on your purchase of the dB10 Passive Direct Box. The dB10 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, and high-quality Neutrik

® connectors. The dB10 includes a pad switch for

instrument, line and even speaker level signals. And you can even take more control of

your sound by utilizing the polarity invert switch to set the phase relationship between

the direct and mic’d sound.

The dB10 Features

Premium Performance

Rugged Design

Stackable Chassis with

Durable Rubber Foot

Gold-plated Neutrik® XLR Connector

Premium Chrome Toggle Switches

Hi-Z ¼" Input Jack

Parallel ¼" Thru Jack

Transformer Isolated

Premium Shielded Custom dbx Transformer

•

Balanced XLR Lo-Z Output

3-Way 0/20/40 dB Pad Switch

Flat/High-Cut Filter Switch

Output Polarity Invert Switch

Ground Lift Switch

•

Front Panel

INPUT THRU

PAD

0dB

20dB

40dB

1 2 3

Rear Panel

FLATGND

LIFT INVERT

NORMAL

FILTERPOLARITYPIN 1

OUTPUT

1 2 3 4

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

dB10 Owner’s Manual 18-XXXX-A

18-0555-A

dB10

PASSIVE DIRECT BOX

Front Panel

INPUT

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

PAD

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

input signal levels.

THRU

Connect your onstage ampliﬁer here (optional). This 1/4” unbalanced TS connector is directly

connected to the Input jack.

Rear Panel

PIN 1 (LIFT/GND)

By switching to the LIFT position, the internal connection to the output pin 1 is removed,

isolating the dB10’s grounding system from the rest of the system. This eliminates many

“hum” or “buzz” problems due to ground loops.

OUTPUT

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

POLARITY (INVERT/NORMAL)

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

3 hot.

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).

Technical Support

If you require technical support, contact dbx Customer Service. Be prepared to accurately describe

the problem. Know the serial number of your unit - this is printed on a sticker attached to the

bottom panel. If you have not already taken the time to ﬁll out your warranty registration card

and send it in, please do so now.

Before you return a product to the factory for service, we recommend you refer to the manual.

Make sure you have correctly followed installation steps and operation procedures. If you are

still unable to solve a problem, contact our Customer Service Department at (801) 568-7660 for

consultation. If you need to return a product to the factory for service, you MUST ﬁrst contact

Customer Service to obtain a Return Authorization Number.

No returned products will be accepted at the factory without a Return Authorization Number.

Please refer to the Warranty information on the following page, which extends to the ﬁrst end-

user. After expiration of the warranty, a reasonable charge will be made for parts, labor, and pack-

ing if you choose to use the factory service facility. In all cases, you are responsible for transpor-

tation charges to the factory. dbx will pay return shipping if the unit is still under warranty.

Use the original packing material if it is available. Mark the package with the name of the shipper

and with these words in red: DELICATE INSTRUMENT, FRAGILE! Insure the package properly. Ship

prepaid, not collect. Do not ship parcel post.

What Does a Direct Box Do?

First, a direct box converts the audio signal originating from an unbalanced device (like a guitar)

to a balanced audio signal for transmission over a longer distance than is recommended for an

unbalanced signal to travel. As audio industry people know, the advantage of a balanced signal

is realized at the receiving end (audio input) of the balanced cable, typically in the form of a

mic pre-amp input on a mixing console. The mic pre input circuitry consists of a “differential

ampliﬁer” whose job it is to “accept” the audio portion of input signal and “reject” the noise

portion of the signal. The noise portion happens to be roughly equivalent on (or “common to”)

both the “+” and “-” balanced conductors in the mic cable, since external electromagnetic ﬁelds

are induced onto both conductors in a roughly similar fashion. Since the conductors are always

in a “twisted pair” conﬁguration, they “see” the same noise ﬁeld. Thus, this is known as “com-

mon-mode noise”. Another type of common-mode noise somewhat evenly-induced onto both

conductors is due to the inherent physics of connecting two pieces of equipment together and the

resulting ﬂow of electrons due to noise voltages present at each piece of equipment. The ability

of a balanced input to reject common-mode noise is measured in dB and called its “common-mode

rejection ratio”, or CMRR.

The second function of a direct box is to convert from a high-impedance output – on an instru-

ment such as electric guitar with passive pickups, for instance – to a low-impedance output. A

cable driven by a high-impedance output is more susceptible to signal loss and noise pickup than

a cable driven by a low-impedance output. Thus, using a direct box again improves, for a dif-

ferent reason, the ability to run longer distances due to the impedance conversion from high to

low-impedance.

Third, at the heart of the direct box is an isolation transformer that allows complete “galvanic”

isolation, if desired, between the equipment plugged into either end. This eliminates the hum

and buzz present in the system due to ground loops.

Example Setup 1: Guitar signal sent to amp and PA/Mixer

Pan

Mute

-10

+10

-20

-30

-5

L / R

Mute

L / R

Mute

L / R

Mute

L / R

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

1234

-10

+10

-20

-30

-5

-10

+10

-20

-30

-5

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Mute

L / R

-10

+10

-20

-30

-5

INPUT THRU

PAD

0dB

20dB

40dB

Mixer

Amplifier

Guitar

dB10

Direct Box

From

OUTPUT

on Rear Panel

Example Setup 2: Direct guitar signal and amped signal on two mixer channels

Pan

Mute

-10

+10

-20

-30

-5

L / R

Mute

L / R

Mute

L / R

Mute

L / R

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-1 0+1

+5 Pan

-5

-4

-3

-2

-10 +1

+5 Pan

-5

-4

-3

-2

-10 +1

+5 Pan

-5

-4

-3

-2

-1 0 +1

+5 Pan

-5

-4

-3

-2

-1 0 +1

+5 Pan

-5

-4

-3

-2

-1 0 +1

+5 Pan

-5

-4

-3

-2

-1 0 +1

1234

-10

+10

-20

-30

-5

-10

+10

-20

-30

-5

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Mute

L / R

-10

+10

-20

-30

-5

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Aux 1

4 6

Aux 2

4 6

Mute

L / R

-10

+10

-20

-30

-5

INPUT THRU

PAD

0dB

20dB

40dB

Mixer

Amplifier

Guitar

dB10

Direct Box

From

OUTPUT

on Rear Panel

Mic

Special Functions

Polarity Invert

The polarity function is used in situations where the direct box is used as a splitter, and two

“sort-of parallel” signals are fed to two mixer channels to be perhaps panned left and right for

a nice stereo sound. Flipping the Polarity Invert function will change the phase relationship

between the two signals and will typically result in signiﬁcantly different-sounding results.

A typical example would be to plug a guitar into the input of the direct box, then feed the signal

directly back out the Thru jack and into the guitar amp. Then the guitar amp would either be

mic’d and sent to one mixer input channel, or a direct output on the guitar amp would be sent to

the mixer channel. The output of the direct box would be fed into a second mixer input chan-

nel, and the Polarity Invert switch position would then be selected based on preference on how

it sounds. In the situation where the amp is mic’d, the position of the mic away from the guitar

amp speaker also affects the exact phase relationship between the two guitar signals as well.

Filter

When a guitar amp is mic’d, not only does the guitar amp speaker not reproduce high frequencies,

but the mic typically does not reproduce high frequencies well either at these loud levels. Thus,

a mic’d guitar amp has signiﬁcantly subdued “high-end”. Since the 0 / 20 / 40 dB pad feature

allows input connection directly from the speaker output of a guitar amp or power amp* when

switched to the 40 dB pad position, the Hi-Cut ﬁlter is used in conjunction with the 40 dB pad on

an ampliﬁer output signal to roughly duplicate the sound of a mic’d speaker. Otherwise the signal

would have much more high frequency content and would sound “tinny” in comparison.

NOTE: The Filter switch only works when the Pad switch is set to 40 dB.

* See the maximum input level speciﬁcation.

Speciﬁcations

Circuit Type:

Input:

Number of Connectors:

Connection:

Type:

Attenuation Pad:

Filter:

Max Input Level (0 dB Pad):

(20 dB Pad):

(40 dB Pad):

Input Impedance (0dB):

(-20dB):

(-40dB):

Outputs:

Number of Connectors:

Main Output:

THRU Output:

Main Output Impedance:

Main Output CMRR (60 Hz):

(1 kHz):

(10 kHz)

Output Polarity:

Performance:

Bandwidth:

Frequency Response:

Phase Deviation (Input ð Output):

Insertion Loss:

Harmonic Distortion (THD+N):

Noise Floor:

Dynamic Range:

Power Supply:

Voltage:

Current:

Ground:

Physical:

Size (L x W x H):

Weight:

Construction:

Finish:

If you want to dispose this product, do not mix it with general household waste. There is a

separate collection system for used electronic products in accordance with legislation that

requires proper treatment, recovery and recycling.

Private household in the 25 member states of the EU, in Switzerland and Norway may return their used

electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar

new one).

For Countries not mentioned above, please contact your local authorities for a correct method of disposal.

By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and

recycling and thus prevent potential negative effects on the environment and human health.

Warranty

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 within 30 days

after purchase date to validate this warranty. Proof-of-purchase is considered to be the burden of

the consumer.

2. dbx warrants this product, when bought and used solely within the U.S., to be free from de-

fects in materials and workmanship under normal use and service.

3. dbx liability under this warranty is limited to repairing or, at our discretion, replacing defective

materials that show evidence of defect that are not due to normal wear and tear and/or improper

handling by the user, provided the product is returned to dbx WITH RETURN AUTHORIZATION from

the factory, where all parts and labor will be covered up to a period of four years. A Return Autho-

rization number must ﬁrst be obtained from dbx by telephone. The company shall not be liable for

any consequential damage as a result of the product’s use in any circuit or assembly.

4. dbx reserves the right to make changes in design or make additions to or improvements upon

this product without incurring any obligation to install the same additions or improvements on

products previously manufactured.

5. The foregoing is in lieu of all other warranties, expressed or implied, and dbx neither assumes

nor authorizes any person to assume on its behalf any obligation or liability in connection with

the sale of this product. In no event shall dbx or its dealers be liable for special or consequen-

tial damages or from any delay in the performance of this warranty due to causes beyond their

control.

Passive

1/4” TS (Tip Hot, Sleeve Ground)

Unbalanced, RF Filtered

Switchable: 0, 20, 40 dB

Switchable: Low Pass @ 6 kHz (40 dB pad position only)

+33 dBu

80 k with 600 load, 270 k with 2 k load, 13 M with 100 k loadΩ Ω Ω Ω Ω Ω

65 k TypicalΩ

70 k TypicalΩ

Male XLR, Balanced, Pin 2 hot

1/4” Unbalanced TS (Tip Hot, Sleeve GND)

600 typical, balancedΩ

128 dB typical @ 60 Hz

104 dB typical @ 1 kHz

98 dB typical @ 10 kHz

Switchable: Normal / Invert

20 Hz to 20 kHz +/-0.1 dB typical

<10 Hz to 80 kHz, -3 dB

+1 deg @ 20 Hz, -5 deg @ 20 kHz into 2 k loadΩ

21 dB typical

0.003% typical @ 50 Hz, 0 dBu

0.002% typical @ 1 kHz, 0 dBu

0.002% typical @ 10 kHz, 0 dBu

-120 dBu, 22 Hz to 22 kHz, unweighted

153 dB, 22 Hz to 22 kHz, unweighted

N/A

Switchable: Ground / Lift

5.82” X 5.44” X 2.20”

1.5 lbs. (0.68 kg)

Metal Casting

Powder Coat

Product specificaties

Merk:	DBX
Categorie:	Niet gecategoriseerd
Model:	db10

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