Ampetronic ATT-U Bedienungsanleitung
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
Tel: +44 (0) 1636 610062 Fax: +44 (0)1636 610063
www.ampetronic.co Email: sales@ampetronic.co
UP13021-4
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