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Ashly TRA-4150 取扱説明書
Operator Manual – TRA Series Amplifiers

Physical Description

TRA-Series models generally have the same physical design, though there are obvious
differences between two and four channel versions. The model number is indicated on the
left side of the front panel
Amplifier Front Panel
1
2
3
1.
Mounting Holes – For rack mounting.
2.
Power Switch – Switches the unit on or off
3.
Status LEDs – Indicate status of Power,
Standby, and Protect
4.
Air Vents
1
2
3
6

Amplifier Rear Panel

1.
3-Pin Euroblock Input Connectors – These
connectors are used for all input signals.
2.
Gain Switch – sets the amplifier gain to +36dB
or +26dB sensitivity.
3.
Channel Attenuators – These knobs adjust
the attenuation of the input signal of each
channel from ∞ to 0.
Items 1-4 are identical on all channels of all
TRA-Series amplifiers, 2 or 4 channel.
4.
Standby Connector – This 2-Pin Euroblock
connector provides for remote standby
switching. The Power switch must be in the On
position for the Standby connector to be active.
WARNING: Do not remove the mains connector ground. It is illegal and dangerous.
4
5.
5.
6.
7.
All Rights Reserved
5
Channel LEDs – The Sig LED will begin to
light when the output voltage reaches
approximately 0.3 volts. When clipping occurs
the Clip LED will light.
4 5
Delay Switches – These switches provide turn
on delay when the Standby connector is used.
The switches are additive, providing as much
as 7.5 seconds of delay
Screw Terminal Output Connectors – These
connectors provide the output signal for each
channel. The positive 4/8 Ω (+) and negative (-
) connectors should be used for low-impedance
applications. For constant voltage 70V or 100V
applications, connect the negative wire (-) of
your system to the C (common) terminal and
the positive (+) wire to the appropriate Constant
Voltage output. For 25V, wire as shown.
Mains Connector - Connection to the mains is
via this 3-Prong IEC connector
Page - 5
Important Safety
Instructions – 2
Introduction - 3
The TRA Series - 4
Physical Description - 5
Front Panel
Rear Panel
Installation - 6
Operation - 8
Troubleshooting - 9
Spec Table - 10
Dimensions - 11
Warranty - 12
Terminals marked
with
are
HAZARDOUS LIVE.
7
External wiring to these
terminals/ connectors
requires installation by
trained personnel, or pre-
manufactured cables