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Contents
Introduction
Features
Front Panel Controls
Rear Panel Controls
Get Started
Block Diagrams
Specifications
Scope of Supply
Servicing
Welcome
Congratulation and thank you for purchasing Nowsonic Titan 621 power
amplifier. This section briefly describes the possibilities of the Class-D po-
wer amplifier. Titan 621 amplifiers are digital power amplifiers designed
to meet the specialized needs of sound contractors. They combine the
best of all features, providing an outstanding sound quality with all the
known advantages of Class D amplifiers. Such as the excellent efficiency
and very low heat dissipation. And due to the complete passively cooled
entity only a minimal of maintenance is needed, while ensuring maxi-
mum reliability.
The small size of a single rack space make them very interesting for fixed
rack mount as well as mobile applications. Titan 621 are two channel
(stereo) Class D amplifiers with an additional channel for powering a
subwoofer cabinet. They are capable of delivering a power up to 2 x 150
watts to the stereo channels and 300 watts to the subwoofer channel.
The signal input connections are accommodated with balanced XLR or
¼-inch TRS connectors. The operation mode can be selected between
stereo mode, bridge mode and parallel mode. The output connections
are accommodated with output binding posts or Speakon connectors.
Front Panel Controls
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1) Power switch:
By means of the power switch, the amplifier can be turned ON and
OFF. When the amplifier is switched on, the blue LED located above
the power button will illuminate.
2) Gain control knobs:
These rotary gain control knobs allow you to adjust the level for each
individual channel.
3) Indicator LEDs:
These LEDs indicate the operation of the amplifier. There are three LEDs
provided. A signal indicator, a clip indicator, and a protect indicator. The
green signal indicator LEDs will light up when the input channel ex-
ceeds -20 dBu. The yellow clip LEDs will illuminate when the channels
output is being overdriven, and the two red protect indicators illumina-
te when the thermal compression begins, or any fault is detected.
Unpacking and Installation
Although it is neither complicated to install nor difficult to operate your
amplifier, a few minutes of your time is required to read this manual for
a properly wired installation and becoming familiar with its features and
how to use them. Please take a great care may be needed when moving
your set and are required if it ever becomes necessary to return your set
for service. Never place the unit near radiator, in front of heating vents, to
direct sun light, in excessive humid or dusty location to avoid damages
and to guaranty a long reliable use.
Connect your unit with the system components according to the de-
scription on the following pages.
Features
Compact size, high performance and lightweight with Class-D
technology.
Integrated Peck limiters provide maximum output while protecting
your speakers.
Various (XLR, ¼-inch TRS, RCA) inputs ensure compatibility with any
source.
5-Way Binding Post, 4-Pole Speakon outputs ensure compatibility
with any speaker connection.
Mode selection with Stereo, Parallel and Bridged Mono.
Advanced protection includes abnormal voltage, over current and
high temperature.
Desktop and 19-inches rack mountable type.
Low distortion and low noise level.
Ideal commercial and industrial use.
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4) Subwoofer gain control knobs:
By means of this rotary gain control knob, the level for the subwoofer
channel can be controlled.
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TITAN 621
EN
User manual
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