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Chord hi-fi system DI-A1

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DI-A1

Active Direct Injection Box

Item ref: 93 173.2 UK

User Manual

Introduction

Thank you for choosing the Chord DI-A active D.I. box as part of your audio signal chain. The DI-A1 converts high impedance audio from instruments 1

or line outputs to w impedance balanced output to be fed directly into a mixing console or amplifier input. This is an active D . box, which uses aa lo .I n

inbuilt buffer amplifier to boost the signal for long cable runs without signal degradation.

Input panel Output panel

Hi- put6.3mm Z in

INPUT: Hi- put LOW BATT: Low battery indicator 6.3mm Z in

PAD: Attenuation switch dc INPUT: Input for optional 12Vdc adaptor 12V

THRU Hi-Z out W-Z OUT 600 : Balanced XLR output : 6.3mm LO Ω

GND GND: - OAT-LIFT switch 9V BATT: PP3 battery compartment FL

Operation

To power the DI-A1, switch on phantom power to the XLR input on the mixing console or insert a 9V PP3 battery into the battery compartment.

Alternatively, connect a 12Vdc (200mA min.) power supply to the 12Vdc INPUT jack.

Connect the instrument ( other high impedance audio source) to the DI- via the 6.3mm INPUT jack. or A1

To feed to backline amplifier or further high impedance input, use the adjacent 6.3mm THRU jack. a

Connect the L -Z OUT connection directly to the mixing console or amplifier input using balanced XLR leads. OW

High level input signals can be attenuated so as not overdrive the mixer or amp inputs by using the PAD switch. to

0dB setting leaves the input unaffected, whereas -20dB and -40dB settings reduce the signal level progressively.

The DI-A1 has an inbuilt noise filter to help eliminate RF and mains hum. In me cases, it is necessary to isolate the signal ground to help reduce so

such noise and the GND switch has 3 options to help with this. GND setting is fully grounded, FLOAT setting isolates the signal ground from the case

but retains the noise filter and LI setting isolates the signal ground altogether without the filter. FT

In the event of noise appearing in the signal chain, try these settings to see if FLOAT or LIFT can improve the signal quality.

Specifications

Errors and omissions excepted.

Power supply

9V battery (PP3 not supplied), 12Vdc (optional) or 9-52V

phantom power

Input

6.3mm jack (unbalance d)

Outputs

XLRM (balanced), 6.3mm jack through (unbal)

Input impedance

>100k Ohms

Output impedance

600 Ohms

Controls

0/-20/-40dBu pad & Ground-Float-Lift switch

Dimensions

103 x 70 x 45mm

Weight

2 g 43

Disposal: The “Crossed Wheelie Bin” symbol on the

product means that the product is classed as Electrical or

Electronic equipment and should not be disposed with other

household or commercial waste at the end of its useful life.

The goods must be disposed of according to your local

council guidelines.

Produktspecifikationer

Varumärke:	Chord
Kategori:	hi-fi system
Modell:	DI-A1
Färg på produkten:	Meerkleurig
Snäll:	Scale Model Figures
Rekommenderad ålder (min):	14 jaar
Konstruktionstyp:	Solide
Föreslaget kön:	Jongen/meisje
Typ produkt:	Figuurtjes