SI-125 Power Amplifier Manual 1
SI-125
Power Amplifier Manual
6205 Kestrel Road; Mississauga, Ontario; Canada; L5T 2A1 November 2016, Rev 0.5
Phone: (905) 564-0801 Fax: (905) 564-0806 www.telecor.com E:\T2-108\T2-M108-ABC\T2-M108-B.doc/AD
The Telecor SI-125 Power Amplifier delivers 125 watts of audio power intended to drive
industry standard speakers for sound reinforcement and paging systems. The amplifier will
accept either a balanced or single-ended input source. A sensitivity Input Level switch is
provided to select either the 1 V (0 dB) or 100 mV (-20 dB) input level. Output terminals are
provided for 4 Ω, 8 Ω, 25 V and 70 V speaker lines. The amplifier contains current limiting
circuitry on the output to protect it from overloading. The amplifier also has circuitry to protect it
from overheating.
The SI-125 Power Amplifier can have optional modules installed for additional functionality.
The PA-AM Power Amplifier Attenuator Module allows the amplifier to support a 25 V input
signal. The PA-MM Power Amplifier Monitor Module activates a relay under normal amplifier
operation. The PA-PM Power Amplifier Paging Module provides the amplifier with additional
inputs for a low impedance microphone and two balanced line level inputs.
The SI-125 Power Amplifier conforms to UL 60065 ETL listed mark with listing number
3059290.
The following symbols are on the amplifier and in this manual:
CAUTION
These servicing instructions are for use by qualified service personnel only. To reduce the risk
of electric shock, do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so.
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