MUZCENTRE SUB 8008-AS Professional Active Subwoofer Instructions

MUZCENTRE SUB 8008-AS Professional Active Subwoofer

Specifications

• Model: SUB-8008-AS
• Type: Professional Active Subwoofer
• Manufacturer: RCF S.p.A.
• Website: https://muzcentre.ru/

Product Usage Instructions

Safety Precautions and General Information

Before using the SUB 8008-AS subwoofer, it is crucial to understand and adhere to the safety precautions and general information provided in the manual:

• Read and follow all operating instructions and warnings.
• Avoid exposing the product to objects or liquids, as well as heavy impacts.
• Disconnect the power cable if the product is not used for a long period.
• If any strange odors or smoke are detected, switch off the product immediately.
• Installation should be carried out by professional qualified installers to ensure compliance with regulations.

Operating Precautions

Follow these operating precautions to ensure optimal performance and longevity of the subwoofer:

• Place the subwoofer away from heat sources with adequate air circulation.
• Avoid overloading the product for extended periods.
• Handle control elements gently and avoid using force.
• Use only appropriate cleaning methods for external parts, avoiding volatile substances.
• Follow manufacturer recommendations for support equipment.
• Move the equipment with extreme caution to prevent overturning.
• Avoid sudden stops, excessive pushing force, and uneven surfaces.
• This product should not be disposed of with household waste.
• Follow WEEE directive (2012/19/EU) guidelines and national laws for proper disposal.

Professional Installation

• For correct installation and certification according to regulations, RCF S.p.A. recommends professionally qualified installers or specialized firms.

FAQ

• Q: Can I clean the external parts of the subwoofer with alcohol?
• A: No, do not use solvents, alcohol, benzene, or other volatile substances for cleaning the external parts of this product. Use appropriate cleaning methods recommended in the manual.
• Q: What should I do if I detect strange odors or smoke coming from the subwoofer?
• A: Immediately switch off the product and disconnect the power cable. Contact a professional for inspection and repair.
• Q: Is it necessary to use professional installers for setting up the SUB 8008-AS subwoofer?
• A: Yes, RCF S.p.A. strongly recommends that the product is installed by professional qualified installers or specialized firms to ensure correct installation and compliance with regulations.

SAFETY PRECAUTIONS AND GENERAL INFORMATION

The symbols used in this document give notice of important operating instructions and warnings that must be strictly followed.

| CAUTION| Important operating instructions: explains hazards that could damage a product, including data loss
---|---|---
| WARNING| Important advice concerning the use of dangerous voltages and the potential risk of electric shock, personal injury or death.
| IMPORTANT NOTES| Helpful and relevant information about the topic
| SUPPORTS, TROLLEYS AND CARTS| Information about the use of supports, trolleys and carts. Reminds to move with extreme caution and never tilt.
| WASTE DISPOSAL| This symbol indicates that this product should not be disposed with your
household waste, according to the WEEE directive (2012/19/EU) and your
national law.

IMPORTANT NOTES

This manual contains important information about the correct and safe use of the device. 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.

SAFETY PRECAUTIONS

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

Power supply from mains

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

2. 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 main 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.
   • Be careful: in the case of a product supplied by the manufacturer only with POWERCON connectors and without a power cord, jointly to POWERCON connectors type NAC3FCA (power-in) and NAC3FCB (power-out), the following power cords compliant to the national standard shall be used:
   • EU: cord type H05VV-F 3G 3×2.5 mm2 – Standard IEC 60227-1
   • JP: cord type VCTF 3×2 mm2; 15Amp/120V~ – Standard JIS C3306
   • US: cord type SJT/SJTO 3×14 AWG; 15Amp/125V~ – Standard ANSI/UL 62

3. 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.

4. Never attempt to carry out any operations, modifications or repairs that are not expressly described in this manual.
   Contact your authorized service center 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 in the unit.
   •  The product has been subject to a heavy impact.

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

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

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

8. 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.

9. Supports, trolleys and carts.
   The equipment should be only used on supports, trolleys and carts, where necessary, that are recommended by the manufacturer. The equipment / support / trolley / cart assembly must be moved with extreme caution. Sudden stops, excessive pushing force and uneven floors may cause the assembly to overturn. Never tilt the assembly.

10. 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.).

11. Hearing loss.
    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 ear plugs or protective earphones. See the manual technical specifications to know the maximum sound pressure level.

OPERATING PRECAUTIONS

• 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.

IMPORTANT NOTES
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

WARNING! CAUTION! To prevent the risk of fire or electric shock, never expose this product to rain or humidity.
WARNING! To prevent electric shock hazards, do not connect to the mains power supply while the grille is removed
WARNING! to reduce the risk of electric shock, do not disassemble this product unless you are qualified. Refer servicing to qualified service personnel.

CORRECT DISPOSAL OF THIS PRODUCT

• This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE).
• Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE.
• At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources.
• For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service.

CARE AND MAINTENANCE

To ensure a long-life service, this product should be used following this advice:

• If the product is intended to be set up outdoors, be sure it is under cover and protected to rain and moisture.
• If the product needs to be used in a cold environment, slowly warm up the voice coils by sending a low-level signal for about 15 minutes before sending high-power signals.
• Always use a dry cloth to clean the exterior surfaces of the speaker and always do it when the power is turned off.

CAUTION: to avoid damaging the exterior finishes do not use cleaning solvents or abrasives.
WARNING! CAUTION! For powered speakers, do cleaning only when the power is turned off.

RCF S.p.A. reserves the right to make changes without prior notice to rectify any errors and/or omissions.
Always refer to the latest version of the manual on www.rcf.it.

DESCRIPTION

SUB-8008-AS – PROFESSIONAL ACTIVE SUBWOOFER
SUB 8008-AS is a powerful subwoofer featuring two high-power 18” woofers with 4.0” voice coils. This subwoofer delivers a serious amount of low frequencies. Powered by a 4400 W Class-D amplifier the SUB 8008-AS can perform in the most demanding situations. The housing of SUB 8008-AS matches a wide range of RCF speakers placed in single or coupled combinations, pole mounted on the subwoofer or even line arrays stacked over the subwoofer, enabling to build of perfect combinations for every situation.

SUB 8008-AS

• 4400 Watt 2 X 18” Vented Woofers 80 Kg (176,87 lbs)

WARNING! CAUTION! Loudspeaker connections should be only made by qualified and experienced personnel having the technical know-how or enough specific instructions (to ensure that connections are made correctly) to prevent any electrical danger.
To prevent any risk of electric shock, do not connect loudspeakers when the amplifier is switched on.
Before turning the system on, check all connections and make sure there are no accidental short circuits.
The entire sound system shall be designed and installed in compliance with the current local laws and regulations regarding electrical systems.

REAR PANEL FEATURES AND CONTROLS

1. FEMALE XLR INPUTS L and R The system accepts XLR input connectors.

2. MALE XLR SIGNAL OUTPUTS The output XLR connectors provide a loop through for speakers’ daisy chaining. The balanced connectors are connected in parallel and can be used to send the audio signal to other amplified speakers or supplementary amplifiers.

3. SYSTEM SET UP ENCODER

4. GAIN REDUCTION / POWER LED

   • POWER LED This green LED lights up when the speaker is connected to the main power supply.
   • GAIN REDUCTION LED Pushing the encoder once, the gain reduction indicator lights up green. Then, by rotating the encoder, the gain level can be set to the right level.

5. DELAY / SIGNAL LED

   • DELAY LED Pushing the encoder twice, the delay indicator lights up green. Then, rotate the encoder to delay the speaker.
     The delay is expressed in meters.

   • SIGNAL LED The signal indicator lights up green if there is an audio signal on the main.

6. PRESET / LIMITER LED

   • PRESET LED Pushing the encoder three times, the preset indicator lights up green. Then rotate the encoder to load the right preset to the speaker.
   • LIMITER LED The amplifier has a built-in limiter circuit to prevent any amplifier clipping or transducer’s overdrive.
     When the soft clipping circuit is active, the LED blinks RED. It is okay if the limiter LED blinks occasionally. If the LED lights continuously, turn down the signal level.

7. SYSTEM SET-UP DISPLAY It displays the system setting values.

8. LINK/XOVER SELECTOR When the selector is set to LINK position, the input signal is sent directly to the output signal.
   When the selector is set in the XOVER position, a crossover signal will be applied to the outputs to optimize the signal sent to any speaker connected.

9. AC POWER INPUT PowerCON TRUE1 TOP IP-Rated power connection.

10. AC OUTPUT LINK Sends the AC power to another speaker. Power link: 100-120V~ max 1300W l 200-240V~MAX 2800W

CONNECTIONS

WARNING! CAUTION! Loudspeaker connections should be only made by qualified and experienced personnel having the technical know-how or enough specific instructions (to ensure that connections are made correctly) in order to prevent any electrical danger.
To prevent any risk of electric shock, do not connect loudspeakers when the amplifier is switched on.
Before turning the system on, check all connections and make sure there are no accidental short circuits.
The entire sound system shall be designed and installed in compliance with the current local laws and regulations regarding electrical systems.

The connectors must be wired according to the standards specified by the AES (Audio Engineering Society).

BEFORE CONNECTING THE SPEAKER
On the rear panel, you will find all the controls, signal, and power inputs. At first verify the voltage label applied to the rear panel (115 Volt or 230 Volt). The label indicates the right voltage. If you read the wrong voltage on the label or if you can’t find the label at all, please call your vendor or authorized RCF SERVICE CENTRE before connecting the speaker. This fast check will avoid any damage.
In case of need of changing the voltage please call your vendor or authorized RCF SERVICE CENTRE. This operation requires the replacement of the fuse value and is reserved to an RCF SERVICE CENTRE.

BEFORE TURNING ON THE SPEAKER
You can now connect the power supply cable and the signal cable. Before turning on the speaker make sure the volume control is at the minimum level (even on the mixer output). The mixer must be already ON before turning on the speaker. This will avoid damage to the speaker and noisy “bumps” due to turning on parts on the audio chain. It is a good practice to always turn on the speakers at last and turn them off immediately after their use. You can now turn ON the speaker and adjust the volume control to a proper level.
PROTECTIONS
These RCF active speakers are equipped with a complete system of protection circuits. The circuit is acting very gently on the audio signal, controlling the level and maintaining distortion at an acceptable level.

• VOLTAGE SETUP (RESERVED TO THE RCF SERVICE CENTRE)
• 100-240 Volt~ 50-60 Hz 600W
• (INTERNAL FUSE VALUE: 2xT6.3A H250V)

CONFIGURATIONS

• RCF SUB 8008-AS can be used in single or cardioid configuration (double or triple).

CARDIOID CONFIGURATION (2 subwoofers setup)

• When set in cardioid double configuration, both subwoofers must be set at 0 dB.
• The subwoofer pointing towards the audience should be set with L1, L2, L3 or L4 preset; the other subwoofer should be set with C1, C2, C3 or C4 preset.

CARDIOID CONFIGURATION (3 subwoofers setup)

• When set in the cardioid triple configuration, the two subwoofers pointing toward the audience must be set at -5 dB.
• The modules shall have the same settings (system delay, sensitivity, preset).
• The subwoofers pointing towards the audience should be set with L1, L2, L3 or L4 preset; the other subwoofer should be set with C1, C2, C3 or C4 preset.

NOTE: For system alignment refer to the documentation on www.rcf.it.

TROUBLESHOOTING

THE SPEAKER DOESN’T TURN ON

• Make sure the speaker is switched on and connected to an active AC power

THE SPEAKER IS CONNECTED TO AN ACTIVE AC POWER BUT DOESN’T TURN ON

• Make sure the power cable is intact and connected correctly.

THE SPEAKER IS ON BUT DOESN’T MAKE ANY SOUND

• Check if the signal source is sending correctly and if the signal cables are not damaged.

THE SOUND IS DISTORTED AND THE OVERLOAD LED BLINKS FREQUENTLY

• Turn down the output level of the mixer.

THE SOUND IS VERY LOW AND HISSING

• The source gain or the output level of the mixer might be too low.

THE SOUND IS HISSING EVEN AT PROPER GAIN AND VOLUME

• The source might send a low-quality or noisy signal

HUMMING OR BUZZING NOISE

• Check out the AC grounding and all the types of equipment connected to the mixer input including cables and connectors.

WARNING! To reduce the risk of electric shock, do not disassemble this product unless you are qualified. Refer servicing to qualified service personnel.

DIMENSIONS

SPECIFICATIONS

TECHNICAL SPECIFICATIONS|
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Acoustical specifications| Frequency Response:| 30 Hz ÷ 120 Hz
| Max SPL @ 1m:| 137 dB
Transducers| Woofer:| 2 x 18”, 4.0” v.c
Input/Output section| Input signal:| bal/unbal
| Input connectors:| XLR
| Output connectors:| XLR
| Input sensitivity:| -2 dBu/+4 dBu
Processor section| Crossover Frequencies:| Selectable
| Protections:| Thermal, Excurs., RMS
| Limiter:| Soft Limiter
| Controls:| Xover, Phase switch, Deep/Punch, Output Delay Setting
Power section| Total Power:| 4400 W Peak
| Low frequencies:| 4400 W Peak
| Cooling:| Convection/Forced
| Connections:| Powercon TRUE1 TOP IN/OUT
Standard compliance| CE marking:| Yes
Physical specifications| Cabinet/Case Material:| Plywood
| Hardware:| 2 x M20
| Handles:| 2 x side
| Grille:| Steel
| Color:| Black
Size| Height:| 550 mm / 21.65 inches
| Width:| 1180 mm / 46.46 inches
| Depth:| 700 mm / 27.56 inches
| Weight:| 80 kg / 176.37 lbs

CONTACT

• RCF S.p.A. Via Raffaello Sanzio, 13 – 42124 Reggio Emilia – Italy
• Tel +39 0522 274 411 – Fax +39 0522 232 428 – e-mail: info@rcf.it – www.rcf.it. https://muzcentre.ru/

References

• Профессиональная акустика — Активные акустические системы.

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