LEM T5A, Owner'S Manual

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1. Introduction
Congratulations for having chosen the T5A loudspeaker
system!
To make the best use of the system, please read this
manual thoroughly before operating the equipment.
2. Contents
3. Instructions for use and installation . . . 8
1. Protection and maintenance. . . . . . . . . . . . . . . . 8
2. Prevention of possible interference . . . . . . . . . . 8
3. Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Connector cables . . . . . . . . . . . . . . . . . . . . . . . . 8
4. The T5A system . . . . . . . . . . . . . . . . . . . . 8
5. Installation and connections . . . . . . . . . 8
1. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6. DPPM module - Connection panel . . . . . 9
7. PRESETS . . . . . . . . . . . . . . . . . . . . . . . . . 9
8. The protection system . . . . . . . . . . . . . 10
9. How the PLUGINS work . . . . . . . . . . . . 10
10. Technical specifi cations . . . . . . . . . . . 12
3. Instructions for use and installation
1. Protection and maintenance.
To avoid jeopardizing correct operation, it is best not
to position the enclosures for long periods in exposed
places (damp, high temperature, etc.), in dusty
environments or those subject to strong vibrations. On
this subject, it’s advisable to always leave the protective
grille mounted on the enclosures. In the event of
breakdown, do not open the enclosure, but contact the
nearest GENERALMUSIC Service Centre.
2. Prevention of possible interference.
Avoid installing your equipment in the vicinity of
radios, televisions, etc., since this could cause noisy
disturbance. When connecting other equipment to
your sound system, pay close attention to so-called
earth-loops, which can cause hum: in the event of
interference, try using the
SHIELD switch on the unit’s
control panel.
3. Connections.
Before connecting the enclosures to the mains
supply, make certain that the current corresponds
with that indicated on the rear of the units (there is an
allowance of ±10%). Always connect the power cable
to the enclosures before switching them on and always
remove it after having switched off. Remember to
always connect or disconnect other equipment with the
enclosures off and to always switch on the mixer fi rst,
then the enclosures: in this manner, annoying and often
dangerous peaks are avoided.
4. Connector cables.
When connecting the enclosures to the mixer, make
certain to always use only screened signal cables
made up of two wires plus a braid/screen: the use
of unscreened cables could in fact probably cause
annoying hum and noise. Check periodically that your
cables are in good condition, correctly wired and with
perfectly effi cient contacts: in fact many problems and
drawbacks (false contacts, ground hum, crackles,
etc.) are caused by the use of unsuitable or damaged
cables.
4. The T5A system (fi g. 1)
T5A is a system that integrates in the same unit
loudspeakers , amplifiers and digital processor .
The system, hosted in plywood cabinet, utilizes a
1” horn-loaded compression driver and a 15” woofer
with neodymium magnet. It’s powered by the
DPPM
- Digitally Processed Power Module , which includes
a 100W power amplifi er for the driver, a 400W power
amplifi er for the woofer and a digital processor able to
handle all the signal processing needed for the system
control (see
fi g. 2 ):
- HPF and LPF CROSSOVER fi lters with the choice
between Butterworth, Bessel or Linkwitz/Riley response
and up to 48 dB/oct. slope;
- up to 25
EQ fi lters that can be individually set as
FULL PARAMETRIC, HI and LO SHELVING (6 or 12 dB
slope) or NOTCH FILTER;
-
DELAY LINES on each for the LOUDSPEAKER
alignment;
-
PHASE adjustment with 5° step through a full 360°;
- integrated protection system with high precision PEAK
LIMITERS , long term power protection and LFC (Low
Frequency Control)
3 additional
PLUGINS are also available, which allows
the system performances to be further increased:
MULTICOMP (Multiband Compressor), NOISE GATE
and ANTI-FEEDBACK .
The digital processor includes 16 PRESETS, which can
be recalled directly from the system’s panel and which
include different settings suitable for the use of the
system in different confi gurations.
5. Installation and connections
1. Installation (fi g. 3)
T5A
is fi tted with an adapter for the installation on a
standard loudspeaker stand.
2. Connections
The input of the T5A can be used to connect both line and
microphone signals. For the connection make use of XLR
or 1/4” JACK BALANCED signal cables (
fi g. 4 ).