LEM SPX LIVE User manual

CODE: 277.370

The lighting flash with arrowshad symbol within an
equilateral triangle is intended to alert the user to the
presence of uninsulated “dangerous voltages” within the
product’s enclosure, that may be of sufficient magnitude to
constitute a risk of electric schok to persons.
The exclamation point within an equilater triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanyng the appliance.
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS PERTAINING A RISK OF FIRE, ELECTRIC SHOCK OR INJURY A PERSONS
WARNING - When using electric products, basic precautions should always be followed, including the fol-
lowing.
1. Read all the SAFETY INSTRUCTIONS before using the product.
2. A reduce the risk of injury, close supervision is necessary when the product is used near children.
3. Do not use this product near water - for example, near a bathtub, washbowl, kitchen sink, in a wet base-
ment or near a swimming pool or the like.
4. This product in combination with an amplifier, may be capable of producing sound levels that could cause
permanent hearing loss. Do not operate for a long period of time at high volume level or at level that is
uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist.
5. This product should be located so that its location or position does not interfere with its proper ventilation.
6. This product should be located away from heat sources such as radiators, heat register or other product
that produce heat.
/. The product may be connected a power supply only of the type described on the operating instructions or
as marked on the product.
8. The product may be equipped with a polarized line plug (one blade wider then the other). This is a safety
feature. If you are unable a insert the plug into the outlet, contact an electrician a replace your obsolete
outlet. Do not defeat the safety purpose of the plug.
9. The power-supply cord of the product should be unplugged from the outlet when left unused for a long
period of time. When unplugging the power-supply cord, do not pull on the cord, but grasp it by the plug.
10. Care should be taken so that object do not fall and liquid are not spilled into the enclosure through
openings.
11. The product should be serviced by qualified service personnel when:
A. The power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has been spilled into the product; or
C. The product has been exposed to rain; or
D. The product does not appear to operate normally or exhibits a marked change in performance; or
E. The product has been dropped or the enclosure damaged.
12. Do not attempt to service the product beyond that described in the user-maintenance instructions.
All other servicing should be referred to qualified service personnel.
13. WARNING - Do not place objects on the product’s power cord or place it in a position where anyone
could trip over, walk on or roll anything over it. Do not allow the product to rest on or to be installed over
power cords of any type. Improper installations os this type create the possibility of fire hazard and/or per-
sonal injury.
SAVE THESE INSTRUCTIONS

1
Contents
Installation & operating instructions . . . . . . . . . . . . . . . . . . . . 2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SPX LIVE & MEDIA connection panel . . . . . . . . . . . . . . . . . . . 5
SPX LIVE & MEDIA ACTIVE connection panel . . . . . . . . . . . . 6
SPX SUB ACTIVE connection panel. . . . . . . . . . . . . . . . . . . . . 8
Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
APPENDIX
Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Contents

2
Installation & operating instructions
2Handling.
Don’t force connector and knobs: they have been designed to respond to a light
touch and could be damaged if treated with excessive force.
2Protection and maintenance.
To avoid jeopardizing correct operation, it is best not to position the enclosure 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 enclosure. In the event of breakdown, do not open the enclosure, but contact the nearest
GENERALMUSIC Service Centre.
2Connections.
It is a good rule to connect loudspeaker enclosures and amplifiers with the latter switched off, thus avoiding
signal peaks, which can be annoying and sometimes dangerous for the loudspeaker enclosures
themselves.
2Conservation of documentation and packing.
Keep this user’s handbook for future reference. Keep all the packing material as well for future shipments.
Remember that on the secondhand market, products always have better valuation if, as well as being in
good condition, they also have their original documentation and packing.
AMPLIFIED VERSION ONLY
2Connections and prevention or identification 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 EARTH switch on the
enclosure’s control panel.
2Connection to the mains supply.
Before connecting the enclosure to the mains supply, make certain that the current corresponds with
that indicated on the rear of the unit (there is an allowance of ±10%). Always connect the power cable to
the enclosure before switching on the enclosure and always remove it after having switched off.
2Switching on and off.
Remember to always connect or disconnect other equipment with the enclosure off and to always switch
on the mixer first, then the enclosure: in this manner, annoying and often dangerous peaks are avoided.
The SIGN/COMP LED may light up for a few moments when the mixer is switched on.
2Connector cables.
When connecting amplified enclosures to the mixer, make certain to always use only signal cables
(screened cables made up of two wires plus a braid/screen) and not power cables (speaker cables made
up of just two wires, normally with a larger cross-section): the use of unscreened cables could in fact
probably cause annoying hum and noise. Take good care of the connector cables, very frequently the
cause of problems. Always grip them by the plugs, never pull the cables, and always avoid knots and
twists when coiling them: they will last longer and be more reliable, a great advantage.
Installation & operating instructions

3
Introduction
Congratulations for having chosen SPX!
Derived from the acclaimed SOUND PRESSURE SERIES, LEM introduces the
SPX SERIES, a range of professional loudspeaker systems extremely compact
and lightweight, able to provide an extraordinary efficiency. Designed for use
as portable or fixed P.A. systems, the SPX speakers are ideal in those
applications that require the maximum sturdiness and durability together with
studio-quality sound.
CABINETS
The SPX satellites enclosures are made of polypropylene reinforced with
mineral fibres and they are protected by a solid metal grill. The SPX SUB
enclosure is made of MDF (Medium Density Fiber) coated in scratch resistant
paint. This structure, which is extremely tough and compact, is able to withstand
without any problem whatsoever, continuous use in any type of environment.
Furthermore, special attention has been given to the cabinet design which is
particularly elegant, making these monitor systems ideal for use in situations
in which it is necessary for the system to be perfectly integrated into its
surroundings.
The SPX satellites have a special fixing system which includes 4 different
attachment points and, thanks to a range of specific accessories, they can be
installed practically anywhere or coupled in various combinations with the SPX
SUB resulting in an extremely versatile sound diffusion systems.
LOUDSPEAKERS
The SPX series uses professional loudspeakers built according to LEM
specifications using carefully selected and controlled materials. These
loudspeakers were developed so as to supply a
linear solution even at maximum power, without
distortion and with an excellent sound quality.
MODELS
The range includes 3 different models:
• SPX LIVE: equipped with a 6” 1/2 wide-range,
double-cone loudspeaker, is able to provide a
very high efficiency especially in the mid range,
resulting particularly suitable for the use in LIVE
applications, voice and instrument monitoring and
diffusion in public environments. The power
handling is 90W.
• SPX MEDIA: equipped with a EWT™ dome
tweeter and with a 6” 1/2 woofer, it has an
extremely flat and extended frequency response,
Introduction

4
resulting suitable for high quality monitoring and sound reinforcement and multimedia applications. The
power handling is 90W.
•SPX SUB: equipped with a high efficiency 12”woofer in bass-reflex configuration, combined with
SPX LIVE or SPX MEDIA is able to create small but incredibly powerful sound systems with extended
response at the lowest frequencies. The power handling is 350W.
AMPLIFIED VERSIONS
SPX LIVE ACTIVE and SPX MEDIA ACTIVE include a 90W built-in power amplifier, equipped with anti-
clipping circuit and a highly-professional connection panel. SPX SUB ACTIVE is equipped with a 350W
power amplifier including active crossover with selectable frequency and STEREO connections.
SPX LIVE and SPX MEDIA are also available in the passive version, ideal for multiple installations with
central amplification or for all those applications for which an integrated amplifier is not necessary.
Introduction

5
SPX LIVE & MEDIA connection panel
The connection panels of the SPX LIVE & MEDIA models in the passive version have two different types
of connectors.
JACK CONNECTIONS
The jack connectors are normally used with amplifiers and amplified mixers which have a jack power
output. The two jack connectors are connected in parallel to send the power towards a second
loudspeaker.
PUSH TERMINAL CONNECTIONS
Provide fast connection and easy phase distinction. The type of cable to use is colour coded: red for the
(+) and black for (-)(see ➪connection examples).
SPX LIVE & MEDIA connection panel

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SPX LIVE & MEDIA ACTIVE connection panel
SPX LIVE & MEDIA ACTIVE connection panel
INPUT BAL 0dB
Balanced COMBO connector (0 dB / 30 kOhms):
The SPX LIVE and SPX MEDIA Active models have a COMBO type input connector. This connector,
which can receives both JACK and XLR-M plugs, makes it possible to connect the input signal easily
and quickly. The input of the loudspeaker’s internal amplifier can receive balanced or unbalanced high
impedance line signals which come from high level output equipments.
LINK 0dB
XLR-M balanced connector (0 dB / 30 kOhms): it’s connected in parallel with the input connector to
enable the signal to be sent on to a second unit (e.g. another enclosure). In this way, using the same
signal, it is possible to drive more than one loudspeaker and therefore to create bigger sound systems.
INPUT UNBAL -10dB
RCA pin unbalanced connector (-10 dB / 15 kOhms): SPX LIVE and SPX MEDIA Active models have
an RCA pin input connector which can receive unbalanced, high impedance line signals from high level
output equipments, such as CD players, cassette recorders, multimedia boards etc.

7
LINK UNBAL -10dB
RCA pin connector unbalanced (-10 dB / 15 kOhms): it’s connected in parallel with the input connector
to enable the signal to be sent to a second unit. In this way, using the same signal it is possible to drive
more than one loudspeaker.
SIGN/CLIP
Indicator LED: this is a two-tone LED (green/red) able to show 3 different conditions:
a) off: no signal
b) green/SIGNAL: external signal present (minimum level: -26dB)
c) red/COMPRESSOR: internal compressor operating. It indicates when the compressor starts operating
following the detection of an excessively high signal level being fed out by the system amplifiers. In this
case, the compressor lowers the signal level to avoid damage to the enclosure components and
amplifier clipping. The compressor threshold and time values have been carefully studied and assessed
in order to keep the signal within safety levels and avoid reduced dynamics.
IMPORTANT ➪when the COMPRESSOR LED lights up, this doesn’t indicate a normal operating
condition, but the intervention of a circuit for safeguarding the system in emergency situations. So to
obtain the best results as far as tone response and power output are concerned, it is advisable to prevent
the LED from lighting up regularly.
VOLUME
Control of the signal level sent to the built-in amplifier: operates with continuous values ranging from
fully closed (“∞”position: the signal is not sent to the amplifier) to fully open (“0dB”position: the signal is
sent to the amplifier at the same level at which it arrives on the input). In other words, this control is
used to cut the external signal sent to the amplifier.
SHIELD
Control for separating the electrical earth from that of the chassis: under certain conditions, this
selector can enable to break earth loops which can form when several units are connected together and
often cause hum or other annoying noises.
POWER
ON/OFF switch with indication LED.
A.C. ~
Mains cable, length 2,5 mt.
SPX LIVE & MEDIA ACTIVE connection panel

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SPX SUB ACTIVE connection panel
SPX SUB ACTIVE connection panel
INPUT
Balanced XLR-F + JACK connectors (0 dB / 30 kOhms): SPX SUB has two input connectors connected
in parallel, to enable the signal to be sent on to a second unit (e.g. another enclosure). The internal power
amplifier input can receive balanced or unbalanced high impedance line signals from high level output
units. SPX SUB has two independent LEFT & RIGHT inputs (XLR-F+JACK): this enables the sub-woofer
to be used in STEREO (1 sub + 2 satellites) or MONO (2 subs + 4 satellites).
VOLUME
Control of the signal level sent to the built-in amplifier: operates with continuous values ranging from
fully closed (“∞”position: the signal is not sent to the amplifier) to fully open (“0dB”position: the signal is
sent to the amplifier at the same level at which it arrives on the input). In other words, this control is used
to cut the external signal sent to the amplifier. In the SPX SUB the volume control regulates the signal
sent to the built-in amplifier: therefore, using this control only the sub-woofer volume and NOT the satellite
volume will be modified.

9
SPX SUB ACTIVE connection panel
SIGN/CLIP
Indicator LED: this is a two-tone LED (green/red) able to show 3 different conditions:
a) off: no signal
b) green/SIGNAL: external signal present (minimum level: -26dB)
c) red/COMPRESSOR: internal compressor operating. It indicates when the compressor starts operating
following the detection of an excessively high signal level being fed out by the system amplifiers. In this
case, the compressor lowers the signal level to avoid damage to the enclosure components and
amplifier clipping. The compressor threshold and time values have been carefully studied and assessed
in order to keep the signal within safety levels and avoid reduced dynamics.
X-OVER
Control for selecting the frequency of the SPX SUB built-in crossover. SPX SUB has a built-in 12dB/
oct. electronic crossover with variable frequency, which separates the signal sent to the internal amplifier
(low frequencies) from the signal sent to the satellites (mid-high frequencies). This selector enables to
choose the crossover frequency in a continuous range of values from a minimum of 80Hz to a maximum
of 320Hz. This function can be extremely useful, as the ideal crossover frequency can often vary
considerably according to the type of satellite used, the type of signal to be reproduced or the environment
in which the system is used. We therefore suggest that a series of tests be carried out when the system
is installed and a decision taken according to requirements and personal taste.
OUTPUT
XLR-M + JACK connectors: SPX SUB has two balanced LEFT & RIGHT outputs with double connector,
to enable the use of the system in STEREO or MONO.
The following are the connections to carry out for these setups.
•STEREO configuration (see ➪Connection examples):
RIGHT CHANNEL ➪connect the mixer’s RIGHT output to the sub-woofer’s RIGHT input and the sub-
woofer’s RIGHT output to the RIGHT input of the powered enclosure;
LEFT CHANNEL ➪connect the mixer’s LEFT output to the sub-woofer’s LEFT input and the sub-woofer’s
LEFT output to the LEFT input of the powered enclosure.
MONO configuration (see ➪Connection example):
RIGHT CHANNEL ➪connect the mixer’s RIGHT output to one of the two inputs (LEFT or RIGHT) of the
RIGHT-HAND sub-woofer and the corresponding sub-woofer output to the input of the RIGHT-HAND
amplified enclosure or the RIGHT-HAND channel of the power amplifier;
LEFT CHANNEL ➪connect the mixer’s LEFT output to one of the two inputs (LEFT or RIGHT) of the
LEFT-HAND sub-woofer and the corresponding sub-woofer output to the input of the LEFT-HAND amplified
enclosure or the LEFT-HAND channel of the power amplifier.
SHIELD
Control for separating the electrical earth from that of the chassis: under certain conditions, this
selector can enable to break earth loops which can form when several units are connected together and
often cause hum or other annoying noises.
POWER
ON/OFF switch with indication LED.
A.C. ~
Mains power socket: connect the mains cable supplied with the unit to this socket.

10
Technical specifications
Technical specifications
SPX LIVE SPX MEDIA SPX LIVE A SPX MEDIA A SPX SUB A
POWER
AMPLIFIER
(1kHz, THD 1%) W continuous 90 90 350
DISTORTION (THD+N)
INPUT
IMPEDANCE kOhms
INPUT
SENSITIVITY dB
POWER SUPPLY
IMPEDANCE Ohms 8 8
SENSITIVITY
(SPL 1W/1m) dB 95 91 95 91 91
MAX SPL dB 119 115 119 115 120
FREQUENCY
RESPONSE Hz(-10dB) 85-20000 70-20000 85-20000 70-20000 50-400
DISPERSION(OxV) °90x90 90x90 90x60 90x60
CROSSOVER
FREQUENCY Hz 3.2Hz @ 12dB/ott. 3.2Hz @ 12dB/ott. Variable from 80
to 320 Hz
COMPONENTS 1x6" 1/2
widerange
1" tweeter with
EWT™horn
6" 1/2 woofer
1x6" 1/2
widerange
1" tweeter with
EWT™horn
6" 1/2 woofer 12" woofer
CONSTRUCTION MDF and anti- scratch painting
Metalgrid
CONTROLS
Volume control
Earth lift
Xover frequency
control
CONNECTIONS
Input: 2 JACK +2
XLR-F
Link: 2 JACK +2
XLR-M
DIMENSIONS mm (WxHxD) 194x300x220 194x300x220 194x300x220 194x300x220 486x340x350
WEIGHT kg 4,0 4,6 6,2 6,8 24,0
2 JACK +2 push terminalconnectors
(in paralle) Input: 1 COMBO + 1 RCA Link: 1 XLR-M +1 RCA
Less than 0.1%
30 (balanced)
15 (unbalanced)
0 (0.775 V)
see labelon the apparatus
Polypropilene with mineralfibres.
Metalgrid.
4 fixing pointsfor SC accessories.
Volume control
Earth lift
POWER
HANDLING (AES) W continuous W peak 90 180 90 180

APPENDIX - 1
Layout / Layout
Layout/ Layout

APPENDIX - 2
Cavi di collegamento / Connection cables
Cavi di collegamento / Connection cables
XLR-M bilanciato
Balanced XLR-M
XLR-M sbilanciato
Unbalanced XLR-M
XLR-F bilanciato
Balanced XLR-F
Connettore di potenza JACK
JACK power connector
Connettore RCA PIN
RCA PIN connector
JACK sbilanciato
Unbalanced JACK
JACK bilanciato
Balanced JACK
XLR-F sbilanciato
Unbalanced XLR-F

APPENDIX - 3
Accessori / Accessories
Accessori / Accessories
SC 64 - Supporto a T
/ T stand
SC 62 - Supporto da parete
/ Wall mounting bracket
SC 63 - Supporto da tavolo
/ Table clamp
SC 61 - Adattatore per asta microfonica
/Microphone stand adaptor

APPENDIX - 4
AccessoriAccessori / Accessories
SC 30 - Supporto cassa
/ Speaker stand
SC 31 - Supporto telescopico
/ Telescopic stand
SC 65 - Adattatore per supporto cassa
/ Speaker stand adaptor

APPENDIX - 5
Collegamenti / Connections
POWER AMPLIFIERS
OUTPUT POWER
(minimum)
360+360 Watts / 8ohms
SPX LIVE or MEDIA
SERIES/PARALLEL connection example
TOTAL POWER = 360 Watts per channel - TOTAL IMPEDANCE = 8ohms per channel
Collegamenti / Connections

APPENDIX - 6
Collegamenti / Connections
SPX MEDIA ACTIVE
STEREO KEYBOARD MONITORING
TOTAL POWER = 180 Watts
SC 61 SC 61

APPENDIX - 7
Collegamenti / Connections
SPX MEDIA ACTIVE + SUB ACTIVE
SMALL LIVE P.A.
TOTAL POWER = 530 Watts
Suggested
XOVER
frequency:
120 Hz.
SC 65
SC 30
SC 65
SC 30

APPENDIX - 8
Collegamenti / Connections
SPX LIVE ACTIVE + SUB ACTIVE
T-SYSTEM
TOTAL POWER = 1060 Watts
SC 64 SC 64
SC 31 SC 31
LOW SPIN
connection (*)
Suggested
XOVER
frequency:
160 Hz.
(*) :
+6dBs signal to the sub-
woofer for level alignment
with the satellites (optional)
LOW SPIN connection