LEM SPX LIVE, SPX SUB A, SPX MEDIA, SPX LIVE A, SPX MEDIA A Owner's 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 per­sonal injury.

SAVE THESE INSTRUCTIONS

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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

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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

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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

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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

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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.

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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