RCF ST 12-SMA (01) PDF MANUAL

RCF ST 12-SMA (01) PDF SUMMARY:

What safety precautions must be taken when using this product?

All the precautions, in particular the safety ones, must be read with special attention, as they provide important information.

What precautions should be taken regarding the power supply from mains?

• The mains voltage is sufficiently high to involve a risk of electrocution; install and connect this product before plugging it in.
• Before powering up, make sure that all the connections have been made correctly and the voltage of your mains corresponds to the voltage shown on the rating plate on the unit, if not, please contact your RCF dealer.
• The metallic parts of the unit are earthed through the power cable. An apparatus with CLASS I construction shall be connected to a mains socket outlet with a protective earthing connection.
• Protect the power cable from damage; make sure it is positioned in a way that it cannot be stepped on or crushed by objects.
• To prevent the risk of electric shock, never open this product: there are no parts inside that the user needs to access.

What precautions should be taken to prevent short circuits?

Make sure that no objects or liquids can get into this product, as this may cause a short circuit. This apparatus shall not be exposed to dripping or splashing. No objects filled with liquid, such as vases, shall be placed on this apparatus. No naked sources (such as lighted candles) should be placed on this apparatus.

When should you contact your authorized service center or qualified personnel?

Contact your authorized service centre or qualified personnel should any of the following occur:

• The product does not function (or functions in an anomalous way).
• The power cable has been damaged.
• Objects or liquids have got into the unit.
• The product has been subject to a heavy impact.

What should you do if the product is not used for a long period?

If this product is not used for a long period, disconnect the power cable.

What should you do if the product begins emitting any strange odors or smoke?

If this product begins emitting any strange odours or smoke, switch it off immediately and disconnect the power cable.

What should you avoid connecting this product to?

Do not connect this product to any equipment or accessories not foreseen.

What precautions should be taken for suspended installation?

For suspended installation, only use the dedicated anchoring points and do not try to hang this product by using elements that are unsuitable or not specific for this purpose. Also check the suitability of the support surface to which the product is anchored (wall, ceiling, structure, etc.), and the components used for attachment (screw anchors, screws, brackets not supplied by RCF etc.), which must guarantee the security of the system / installation over time, also considering, for example, the mechanical vibrations normally generated by transducers. To prevent the risk of falling equipment, do not stack multiple units of this product unless this possibility is specified in the user manual.

What does RCF S.p.A. strongly recommend regarding the installation of this product?

RCF S.p.A. strongly recommends this product is only installed by professional qualified installers (or specialised firms) who can ensure correct installation and certify it according to the regulations in force. The entire audio system must comply with the current standards and regulations regarding electrical systems.

What precautions should be taken when using supports and trolleys with this product?

The equipment should be only used on trolleys or supports, where necessary, that are moved with extreme caution. Sudden stops, excessive pushing force and uneven floors may cause the assembly to overturn.

What factors should be considered when installing a professional audio system?

There are numerous mechanical and electrical factors to be considered when installing a professional audio system (in addition to those which are strictly acoustic, such as sound pressure, angles of coverage, frequency response, etc.).

What are the risks of exposure to high sound levels?

Exposure to high sound levels can cause permanent hearing loss. The acoustic pressure level that leads to hearing loss is different from person to person and depends on the duration of exposure. To prevent potentially dangerous exposure to high levels of acoustic pressure, anyone who is exposed to these levels should use adequate protection devices. When a transducer capable of producing high sound levels is being used, it is therefore necessary to wear earplugs or protective earphones. See the manual technical specifications to know the maximum sound pressure level.

What precautions should be taken to prevent noise on line signal cables?

To prevent the occurrence of noise on line signal cables, use screened cables only and avoid putting them close to:

• Equipment that produces high-intensity electromagnetic fields
• Power cables
• Loudspeaker lines

What should you do before connecting and using this product?

Before connecting and using this product, please read this instruction manual carefully and keep it on hand for future reference. The manual is to be considered an integral part of this product and must accompany it when it changes ownership as a reference for correct installation and use as well as for the safety precautions. RCF S.p.A. will not assume any responsibility for the incorrect installation and/or use of this product.

What precautions should be taken to prevent the risk of fire or electric shock?

To prevent the risk of fire or electric shock, never expose this product to rain or humidity.

What are some operating precautions for this product?

• Place this product far from any heat sources and always ensure adequate air circulation around it.
• Do not overload this product for a long time.
• Never force the control elements (keys, knobs, etc.).
• Do not use solvents, alcohol, benzene or other volatile substances for cleaning the external parts of this product.

What is the ST Series?

The ST Series – a new line of active loudspeakers specifically designed to be the everyday monitoring tool for rental companies and professional musicians. With its ultra compact design and choice of formats, together with high output levels, ST Series is the answer to a wide variety of production requirements.

What are the benefits of using the ST Series?

The ST is reliable, easy to use and versatile: for every rental company, musician, venue and audio/visual provider, this high-performance self-powered speaker system offers a degree of simplicity unmatched by traditional amp and speaker PA systems.

What applications is the ST Series suitable for?

ST Series is a practical solution for high intelligibility speech and audio applications, covering infill or delay, production studios, presentations and high power music sound reinforcement with or without subwoofers. A key requirement for everyday audio systems, delivering simple ‘plug and play’ solutions, without compromising performance and portability.

What technology is used in the ST Series?

Legendary RCF transducer technology coupled with state of the art digital amplification topology resulting in a perfectly optimised loudspeaker series. The ST Series provides high end audio coverage even at extreme sound pressure levels, unmatched reliability and acoustic compatibility across the whole series.

What kind of transducers does the ST Series monitoring systems feature?

The ST Series monitoring systems feature professional RCF transducers in order to guarantee a better performance and great vocal reproduction. All Compression drivers and woofers are precision built taking advantage of RCF’s superior moulding, assembly technologies and a wealth of professional knowledge and experience dedicated to achieve extremely high standards.

What kind of amplifier is equipped in all ST Series two-way speakers?

All ST Series two-way speakers are equipped with a new generation Digital Amplifier. The result of this is very high output, extremely low distortion and an incredible natural sound.

What are the inputs, outputs, and controls of the amplifier?

Each amplifier presents both XLR and jack inputs, XLR output link, volume, EQ Mode (FLAT/BOOST), MIC/LINE sensitivity switch, VDE input connector.

What is the purpose of the amplifier’s solid mechanical aluminium structure?

The amplifier features a solid mechanical aluminium structure which not only stabilizes the amplifier during transportation but also assists in the heat dissipation.

What are the key features of the new loudspeaker design?

The new loudspeaker design looks aggressive whilst retaining familiar ergonomics and is the result of extensive combined functional and acoustic research.

What are the ST coaxial system cabinets manufactured in?

The ST coaxial system cabinets are manufactured in Baltic birch plywood and they are designed to dampen down vibrations even at maximum volume settings.

What has the reflex porting been designed to offer?

The reflex porting has been designed to offer a great efficiency in the bass vocal range.

What is the purpose of the side handle with rubber handgrip?

The models are equipped with a side handle with rubber handgrip for greater portability; a special side design of the cabinet helps the precise repositioning of the monitor on the stage.

What has been installed on a side of the cabinet?

A rugged steel pole mount has been installed on a side; in combination with the FREEFIELD equalisation gives the possibility to use the monitor in a pole stand configuration.

In what electromagnetic environments can the equipment considered in this manual be used?

The equipments considered in this manual can be used in electromagnetic environment E1 to E3 as specified on EN 55103-1/2: 2009.

What type of input connectors does the system accept?

The system accepts jack or XLR input connectors.

What can these balanced inputs be used to connect?

These balanced inputs can be used to connect balanced or unbalanced microphones or audio sources at line level.

What is the balanced connector connected in parallel for?

The balanced connector is connected in parallel and can be used to send the audio signal to other amplified speakers, recorders or supplementary amplifiers.

What is the function of the built-in limiter circuit?

The amplifier has a built in limiter circuit to prevent clipping of the amplifiers or overdriving the transducers.

What does it indicate when the soft clipping circuit is active?

When the soft clipping circuit is active the LED blinks RED.

What should you do if the limit LED blinks frequently or lights continuously?

It is okay if the limit LED blinks occasionally. If the LED blinks frequently or lights continuously, turn down the signal level.

What does it mean when the signal indicator lights green?

The signal indicator lights green if there is signal present on the main input.

When is the power status LED ON?

This green led is ON when the speaker is connected to the main power supply and the ON/OFF is in ON position.

What does the output XLR connector provide?

The output XLR connector provides a loop through for speakers daisy chaining.

What does the volume control adjust?

Adjust the amplifier volume.

Does the volume control affect the “Link” – “Input – Link” output level?

This control does not affect the “Link” – “Input – Link” output level.

What does the FLAT/BOOST SWITCH set?

Set the flat or boost equalization.

What is the “Boost” equalization recommended for?

“Boost” equalization is a loudness recommended for music applications, when the system plays on a floor stand.

What is the “Flat” equalization recommended for?

For monitoring applications, when the system is on the floor, “Flat” equalisation is recommended.

What are the positions of the INPUT SENSITIVITY SWITCH and what do they represent?

Position the switch in LINE to use a line level source (0 dB) or MIC to use a microphone source.

What is the purpose of the IEC AC SOCKET?

The IEC AC socket connects the power cord to the socket.

What is the function of the FUSE CARRIER?

Mains fuse housing.

What does the POWER MAIN SWITCH do?

The power switch turns the AC power ON and OFF.

What is the function of the VDE Power Connector?

The VDE Power Connector is used to disconnect the system from the power supply network. It shall be easily accessible after the installation and during the use of the system

What is the AES standard used by the XLR connectors?

The XLR connectors use the following AES standard: PIN 1 = GROUND (SHIELD) PIN 2 = HOT (+) PIN 3 = COLD (-)

Where are the controls, signal, and current inputs located?

On the back panel you will find all the controls, the signal and current inputs.

Who should you contact if you need to change the voltage?

In case it is necessary to change the voltage please call your vendor or authorized RCF SERVICE CENTRE.

Who can perform the voltage change operation?

This operation requires the substitution of the fuse value and is reserved to an RCF SERVICE CENTRE.

What should be done before connecting the power supply cable and the signal cable?

At this point you can connect the power supply cable and the signal cable, but before turning on the speaker make sure that the volume control is at the minimum level (even on the mixer output).

What is important to ensure before turning on the speaker?

It is important that the mixer is already ON before turning on the speaker. This will avoid damage to the speakers and noisy “bumps” due to turning on parts on the audio chain.

What is a good practice regarding turning speakers on and off?

It is a good practice to always turn on speakers at last and turn them off immediately after the show.

What should you do after turning on the speaker?

Now you can turn ON the speaker and adjust the volume control to a proper level.

What are the amplifiers equipped with to control the DSP and the amplifier?

The amplifiers are equipped with a microprocessor to control the DSP and the amplifier.

How is the correct switch on of the amplifier ensured?

The correct switch on of the amplifier is ensured by an initialization procedure; during this test stage the LEDs (Limiter, Signal and Power Status), located on the amplifier module, remain off for approx. 2 sec.

What happens at the end of the switch on procedure?

At the end of the switch on procedure on the amplifier module the Ready green LED only remains steadily on.

What happens in case of a severe failure of the speaker?

In case of a severe failure of the speaker, the LED on the front panel flashes several times and on the amplifier module, the Limiter red LED flashes. The speaker switches to “mute”.

Where is a 35 mm socket for mounting the loudspeaker on a speaker stand provided?

A 35 mm socket for mounting the loudspeaker on a speaker stand is provided in the bottom of the cabinet.

Can you suspend ST speakers by their handles?

Never suspend ST speakers by their handles. Handles are intended for transportation, not for rigging.

What does the microprocessor signal by flashing the “Limiter” red LED on the amplifier panel?

The microprocessor is able to signal three different kinds of failure by flashing the “Limiter” red LED on the amplifier panel before the lighting up of the “Power status” green LED.

What are the three types of failure and what do they indicate?

The three types of failure are:

• WARNING: a non severe error or auto-ripristinate malfunction is detected and the performance of the speaker is not limited.
• LIMITATIONS: an error is detected and the performance of the speaker is limited (the sound level is reduced by 3 dB). This does not affect the operation of the speaker since it continues to operate. However, it is necessary to call the service centre to solve the issue.
• FAILURE: a severe malfunction is detected. The speaker switches to “mute”.

What does the flashing indication of the “Limiter” red LED represent?

FLASHING INDICATION:

• 1 or 2 >Warning
• 3 or 4 >Limitation
• from 5 to 8 >Failure

What happens to the “Ready” green LED in case of failure?

In case of failure, the “Ready” green LED remains off.

What checks should be performed if the red “LIMITER” LED is still on?

Perform the checks listed below:

• check if the speaker is properly connected to the power supply
• make sure that the power supply is of correct voltage
• check that the amplifier is not overheated
• disconnect the speaker from the mains power supply, wait for a few minutes and connect it again.

Who should you contact if the red “LIMITER” LED is still on after performing the checks?

If after these tests the red “LIMITER” LED is still on, please contact an authorised service centre.

What is the FUSE VALUE for the ST 12-SMA with a 200-240 Volt, 50 Hz setup?

T 1.6 A 250 V

What is the FUSE VALUE for the ST 12-SMA with a 100-120 Volt, 60 Hz setup?

T 3.15 A 250 V

What is the FUSE VALUE for the ST 15-SMA with a 200-240 Volt, 50 Hz setup?

T 3.15 A L 250V

What is the FUSE VALUE for the ST 15-SMA with a 100-120 Volt, 60 Hz setup?

T6.3 A L 250V

What is the frequency response of the ST 12-SMA?

45 – 20 kHz

What is the max SPL of the ST 12-SMA?

129 dB

What is the horizontal coverage of the ST 12-SMA?

90°

What is the vertical coverage of the ST 12-SMA?

60°

What is the crossover point of the ST 12-SMA?

1.400

What is the low frequency of the ST 12-SMA?

12”, 2.5” v.c.

What is the high frequency of the ST 12-SMA?

1”, 1.4” v.c.

What is the total power of the ST 12-SMA?

400 Watt

What is the low section power of the ST 12-SMA?

300 Watt

What is the high section power of the ST 12-SMA?

100 Watt

What is the signal input/output of the ST 12-SMA?

Jack-XLR male / XLR female

What is the power input of the ST 12-SMA?

VDE AC socket

What are the DSP and protection circuits of the ST 12-SMA?

2 way equalisation, crossover filtering, Fast limiter, RMS limiter

What are the dimensions (w, h, d) of the ST 12-SMA?

594, 318, 400 mm

What is the weight of the ST 12-SMA?

18 Kg

What is the color of the ST 12-SMA?

Black

What is the frequency response of the ST 15-SMA?

45 – 20 kHz

What is the max SPL of the ST 15-SMA?

131 dB

What is the horizontal coverage of the ST 15-SMA?

90°

What is the vertical coverage of the ST 15-SMA?

60°

What is the crossover point of the ST 15-SMA?

1.400

What is the low frequency of the ST 15-SMA?

15”, 2.5” v.c.

What is the high frequency of the ST 15-SMA?

1”, 1.4” v.c.

What is the total power of the ST 15-SMA?

600 Watt

What is the low section power of the ST 15-SMA?

400 Watt

What is the high section power of the ST 15-SMA?

200 Watt

What is the signal input/output of the ST 15-SMA?

Jack-XLR male / XLR female

What is the power input of the ST 15-SMA?

VDE AC socket

What are the DSP and protection circuits of the ST 15-SMA?

2 way equalisation, crossover filtering, Fast limiter, RMS limiter

What are the dimensions (w, h, d) of the ST 15-SMA?

673, 362, 473 mm

What is the weight of the ST 15-SMA?

20.7 Kg

What is the color of the ST 15-SMA?

Black