The ATT100-T70 is designed to interface a 100V line speaker system to an
electret microphone input such as those found on the Ampetronic CLD1 and
ILD100 induction loop amplifiers. The unit provides a transformer isolated
attenuation of 70dB.
Restrictions on usage
The ATT100-T70 is not suitable for use with balanced or line level inputs. It should
only be connected to inputs intended for unbalanced electret microphones.
1. Output connection.
The ATT100-T70 should be plugged directly into the microphone input of an
Ampetronic loop driver such as the CLD1 or ILD100. Note the restrictions listed
above.
Under no circumstances
should the output be extended, not even using a
screened cable. The extended connection would be susceptible to interference.
ATT100-T70
Adapter
+
-
100V
LINE
SAFETY
EARTH
(IF FITTED)
INSIDE VIEW OF CONNECTOR
}
2. 100V line connection
The 100V speaker line should be connected to the 3-pin input plug as shown
below.
The safety ground connection is not essential and does not connect through the
ATT100-T70. Similarly, the polarity of the 100V line connections is not critical.
Plug into ATT100-T70.
Adjust Input Gain on amplifier as required.
Safety Notice
The ATT100-T70 contains connections to speaker systems which may carry
hazardous voltages. If any damage to the unit is visible do not use the ATT100-
T70, but switch off all attached systems and disconnect the unit from them before
switching on again. Never attempt to open or modify the unit.
Warranty Information
ATT100-T70 is designed and manufactured in England by Ampetronic Ltd.
DECLARATION OF CONFORMITY
Manufacturer:
Ampetronic Ltd.
Address:
Northern Road, Newark,
Nottinghamshire, NG24 2ET.
United Kingdom.
December 2011
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.com (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.
Conforms to the following Directive(s) and Norm(s):
Directive 2004/108/EC
EMC:
EN55103-1 : 2009 Emission
EN55103-2 : 2009 Immunity
Directive 2006/95/EC
Safety:
EN60065 : 2002
Date:
J.R. Pieters
Managing Director
Ampetronic Ltd.
UP13001-5
Ampetronic Ltd,
Northern Road, Newark,
Nottinghamshire, NG24 2ET
United Kingdom
Tel: +44 (0) 1636 610062 Fax: +44 (0) 1636 610063
www.ampetronic.com Email: [email protected]
