Ampetronic ATT-U User manual

ATT-U

Universal Attenuator

Handbook contents:

•Safety

•Introduction

•Installation

•Connection

•Specification

•Warranty Information

•Declaration of Conformity

Safety:

This symbol is used to alert the

user to important operating or

maintenance instructions.

Box Contents:

1 x ATT-U

1 x Handbook (this document)

Either:

1 x 3.5mm jack cable

1 x 6.3mm jack cable

Or:

1 x XLR cable

The Lightning bolt triangle is

used to alert the user to the

risk of electric shock.

1. It is important to read these instructions, and to follow them.

2. Keep this instruction manual in an accessible place.

3. No user serviceable parts. Refer all servicing to qualified personnel.

4. No objects filled with liquids, such as vases, shall be placed on the

apparatus.

WARNING: Do not expose to dripping or splashing.

5. Clean only with a dry cloth.

Introduction

The Universal Attenuator is designed to interface a 100V line or low impedance

(low Z) speaker system to various inputs such as those found on Ampetronic

equipment. In addition to transformer isolation a range of attenuations are

possible by connecting to the appropriate output terminals.

Two terminals are provided at each of the inputs to allow the input cable to ‘loop

through’ the unit, so no separate junction box is needed.

Installation

•Remove the four screws securing the lid.

•Select the desired output cable from those provided. If using the 3.5mm

jack cable connect the braid to the 0V terminal and the other to the

appropriate output terminal. If using the 3 pole 6.35mm jack or XLR cable

connect the blue cable to 0V and red to the appropriate output terminal

(see ‘Connection’). The braid is not connected in this case. If the

attenuation value or input level is not known it is advisable to start with a

high attenuation and reduce it later).

•Connect the 100V line or low impedance speaker cable to

the appropriate input looping through the unit if required

(see ‘Connection’). Connecting to a 100V line system may

involve the risk of electric shock and therefore must be

carried out by an instructed person.

•Secure input and output cables with the cable ties provided through the

holes in the pcb.

•The unit can be securely mounted using the provided lugs provided. See

below.

•Refit the lid making sure cables pass through the relevant openings.

•Test the system and adjust the attenuation as required.

Connection

Specification:

Input 100V line Low Z speaker Units

Frequency

response 100 to >20,000 (±0.5dB) Hz

Max audio

input 100 10 Vac

Max DC input 200 30 V

Output

attenuation -70, -60, -50 & -40 -50, -40, -30 & -20 dB

Connection

method Screw terminals

Cable retention Cable ties (supplied)

Environmental IP30, -10°C to 40°C, 20-90% relative

humidity

Dimensions 80*x 60 x 30(*114 including mounting lugs) mm

Weight 80 g

NOTE: If not using supplied cables output lead must be less than 1m.

Warranty information

This product carries a five year parts and labour warranty from date of shipment

from Ampetronic. To qualify for the five year warranty, the product must be

registered at www.ampetronic.co (products/warranty), without which the warranty

will be valid for two years only.

The warranty could be invalidated if the instructions in this handbook are not

followed correctly, or if the unit is misused in any way.

The ATT-U is designed and engineered in England.

Declaration of Conformity

The manufacturer: Ampetronic Ltd. Unit 2, Trentside Business Village, Farndon Road, Newark, NG24 4XB.

Declares that the products: ‘Universal Attenuator’ Type Name ATT-U

Conforms to the following Directive(s) and Norm(s):

Directive 2004/108/EC EMC: EN 55103-1:2009+A1:2012

Directive 2006/95/EC Safety: EN 60065:2014

Directive 2011/65/EU RoHS

January 2016 – J.R. Pieters - Managing Director, Ampetronic Ltd.

Williams AV - www.williamsav.com

Ampetronic Ltd. Intl:+1.952.943.2252 ph:800.328.6190

[email protected] [email protected]

Tel: +44 (0) 1636 610062 Fax: +44 (0)1636 610063

www.ampetronic.co Email: sales@ampetronic.co

UP13021-4

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