VOID ArcM-12 12-Inch 2-Way Coaxial Stage Monitor User Guide
- June 4, 2024
- VOID
Table of Contents
VOID ArcM-12 12-Inch 2-Way Coaxial Stage Monitor
Safety and Regulations
Important safety instructions
The lightning flash with an arrowhead symbol within an equilateral triangle
is intended to alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons. The exclamation point within
an equilateral triangle is intended to alert the user of the presence of
important operating and maintenance (servicing) instructions in the literature
accompanying the appliance.
Safety instructions – read this first
- Read these instructions.
- Keep these instructions.
- Heed all warnings.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
- Do not install near any heat source such as radiators, heat registers, stoves, or other such apparatus that produce heat.
- Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong. The third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
- Protect power cords from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit the apparatus.
- Only use attachments and accessories specified by Void Acoustics.
- Only use with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
- Unplug the apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as when the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
- Since the mains power supply cord attachment plug is used to disconnect the device, the plug should always be easily accessible.
- Void loudspeakers can produce sound levels capable of causing permanent hearing damage from prolonged exposure. The higher the sound level, the less exposure needed to cause such damage. Avoid prolonged exposure to the high sound levels from the loudspeaker.
Limitations
This guide is provided to help familiarise the user with the loudspeaker
system and its accessories. It is not intended to provide comprehensive
electrical, fire, mechanical and noise training and is not a substitute for
industry-approved training. Nor does this guide absolve the user of their
obligation to comply with all relevant safety legislation and codes of
practice. While every care has been taken in creating this guide, safety is
user-dependent and Void Acoustics Research Ltd cannot guarantee complete
safety whenever the system is rigged and operated.
EC declaration of conformity
For EC Declaration of Conformity please go to: www.voidacoustics.com/eu-
declaration-loudspeakers
UKCA marking
For details of the UKCA marking go to: www.voidacoustics.com/uk-declaration-
loudspeakers
Warranty statement
For warranty, statement go to: https://voidacoustics.com/terms-conditions/
WEEE directive
If the time arises to throw away your product, please recycle all the
components possible. This symbol indicates that when the end-user wishes to
discard this product, it must be sent to separate collection facilities for
recovery and recycling. By separating this product from other household-type
waste, the volume of waste sent to incinerators or land-fills will be reduced
and natural resources will thus be conserved. The Waste Electrical and
Electronic Equipment Directive (WEEE Directive) aims to minimise the impact of
electrical and electronic goods on the environment. Void Acoustics Research
Ltd complies with the Directive 2002/96/EC and 2003/108/EC of the European
Parliament on waste electrical finance the cost of treatment and recovery of
electronic equipment (WEEE) in order to reduce the amount of WEEE that is
being disposed of in land-fill sites. All of our products are marked with the
WEEE symbol; this indicates that this product must NOT be disposed of with
other waste. Instead, it is the user’s responsibility to dispose of their
waste electrical and electronic equipment by handing it over to an approved
reprocessor, or by returning it to Void Acoustics Research Ltd for
reprocessing. For more information about where you can send your waste
equipment for recycling, please contact Void Acoustics Research Ltd or one of
your local distributors.
Unpacking and Checking
All Void Acoustics products are carefully manufactured and thoroughly tested before being despatched. Your dealer will ensure that your Void products are in pristine condition before being forwarded to you but mistakes and accidents can happen.
Before signing for your delivery:
- Inspect your shipment for any signs of contamination, abuse or transit damage as soon as you receive it
- Check your Void Acoustics delivery fully against your order
- If your shipment is incomplete or any of its contents are found to be damaged; inform the shipping company and inform your dealer.
When you are removing your ArcM 12 loudspeaker from its original packaging:
- ArcM 12 loudspeakers are boxed and stapled shut; take care when unboxing and removing the staples to avoid injury or damage to the loudspeaker
- If you need to place the ArcM 12 loudspeaker on a flat surface ensure you use a lint free product to protect the finish
- When you have removed the ArcM 12 loudspeaker from the packaging inspect it to ensure there is no damage and keep all original packaging in case it needs to be returned for any reason.
See section 1.5 for warranty conditions and see section 6 if your product needs servicing.
About
Welcome
Many thanks for purchasing this Void Acoustics ArcM 12 loudspeaker. We truly
appreciate your support. At Void, we design, manufacture and distribute
advanced professional audio systems for the installed and live sound market
sectors. Like all Void products, our highly skilled and experienced engineers
have successfully combined pioneering technologies with groundbreaking design
aesthetics, to bring you superior sound quality and visual innovation. In
buying this product, you are now part of the Void family and we hope using it
brings you years of satisfaction. This guide will help you both use this
product safely and ensure it performs to its full capability.
ArcM 12 overview
The ArcM 12 has multiple working angles, allowing it to be used as a near
field booth monitor or conventional stage wedge, as well as having the ability
to be pole mounted or wall mounted for front-of-house purposes. In terms of
mobility, measures have been taken to reduce weight, while maintaining an
ergonomic design to appease manual handling requirements. Acoustically, FEA
analysis has significantly reduced port noise and air distortion. The 12” ArcM
12 is unpowered, allowing it to integrate with touring operators’ existing
infrastructure.
Key features
- High power 12” + 1.4’’ coaxial neodymium transducer
- Two wedge operating modes (stage and nearfield monitoring)
- Integral pole mount for 35 mm diameter poles
- Low profile design for cleaner stage lines
- Ergonomically designed handles for easy manual handling
- External dimensions optimised for truck packing
- Hard-wearing polyurea finish
- Type 80 rear mounting plate for wall or ceiling fixing
ArcM 12 specifications
Frequency response | 60 Hz – 18 kHz ±3 dB |
---|---|
Efficiency1 | 100 dB 1W/1m |
Crossover point | 1k2Hz (acoustic) |
Nominal impedance | 1 x 8 W passive, 1 x 8 W (LF) and 1 x 16 W (HF) active |
Power handling2 | 500 W AES |
Maximum output3 | 130 dB cont, 133 dB peak |
Driver configuration | Coaxial 1 x 12” – 1 x 1.4” neodymium |
Dispersion | 80°H x 80°V |
Connectors | 2 x 4-pole speakON™ NL4 |
Height | 330 mm (13”) |
Width | 550 mm (21.7”) |
Depth | 463 mm (18.2”) |
Weight | 19 kg (41.9 lbs) |
Rigging | Integral top hat, type 80 mounting bracket |
Finish | Textured polyurethane |
Dimensions
Cable and Wiring
Electrical safety
To avoid electrical hazards please note the following:
Do not access the inside of any electrical equipment. Refer servicing to Void- approved service agents.
Cable considerations for fixed installations
We recommend specifying installation-grade Low Smoke Zero Halogen (LSZH)
cables for permanent installations. The cables should use Oxygen Free Copper
(OFC) of grade C11000 or above. Cables for permanent installations should be
compliant with the following standards:
- IEC 60332.1 Fire retardancy of a single cable
- IEC 60332.3C Fire retardancy of bunched cables
- IEC 60754.1 Amount of Halogen Gas Emissions
- IEC 60754.2 Degree of acidity of released gases
- IEC 61034.2 Measurement of smoke density.
We suggest using the following maximum copper cable lengths to keep level losses below 0.6 dB.
Metric mm2 | Imperial AWG | 16 W load | 8 W load | 4 W load | 2 W load |
---|---|---|---|---|---|
2.50 mm2 | 13 AWG | 72 m | 36 m | 18 m | 9 m |
4.00 mm2 | 11 AWG | 120 m | 60 m | 30 m | 15 m |
Wiring diagram passive mode
speakONTM pins 1+/1- | speakONTM pins 2+/2- | |
---|---|---|
In | HF (1.4”) and LF (12”) | Link/out |
Out | Link/out | Link/out |
Bias Q2 speakONTM wiring passive mode
Bias Q2 | Output 1 or 2 |
---|---|
Output | LF (12”) and HF (1.4”) |
Max parallel units | 4 (2 W load to amplifier) |
Bias Q3/Q5 speakONTM wiring passive mode
Bias Q3/Q5 | Single channel |
---|---|
Output | LF (12”) and HF (1.4”) |
Max parallel units | 4 (2 W load to amplifier) |
Wiring diagram active mode
speakONTM pins 1+/1- | speakONTM pins 2+/2- | |
---|---|---|
In | LF (12”) | HF (1.4”) |
Out | Link/out | Link/out |
Bias Q2 speakONTM wiring active mode
Bias Q2 | Output 1 | Output 2 |
---|---|---|
Output | LF (12”) | HF (1.4”) |
Max parallel units | 4 (2 W load to amplifier) | 4 (4 W load to amplifier) |
Bias Q3/Q5 speakONTM wiring active mode
Bias Q3/Q5 | Output 1 | Output 2 |
---|---|---|
Output | LF (12”) | HF (1.4”) |
Max parallel units | 4 (2 W load to amplifier) | 4 (4 W load to amplifier) |
Mounting
Tools required
- 19 mm ratchet spanner/wrench
- 6 mm Allen key
Installation safety
To avoid mechanical hazards, please note the following:
- Safety regulations vary in different regions. Full compliance with those regulations must be your priority
- Installations must only be undertaken by fully qualified and experienced engineers/technicians who understand local regulations
- This may include consulting a structural engineer before installation of wall brackets
- Remember that all personnel have a duty of care to themselves, to their assistants, to the venue staff and to the public
- Before lifting any part of the system above head height, check the whole rig for loose tools or other items that may fall and cause injury
- Do not use a telephone (even if hands-free) whilst installing. Always concentrate fully on the installation operation
- Do not install equipment that is worn, damaged, corroded, mishandled or over-stressed in any way
- Use only Void-approved mounting equipment and accessories
- Secondary safeties should be provided in all instances where cabinets are flying or fixing overhead and should conform to local regulations
Pole Mounting
Parts required:
35 mm pole
Step 1:
Once the pole has been fitted to an appropriate mount raise the ArcM 12
loudspeaker into position.
Step 2:
Lower the ArcM 12 loudspeaker on the pole using the integrated top hat within
the cup handle. Rotate to the desired horizontal angle.
Ceiling Mounting
Parts required:
T80 – Ceiling Bracket (350mm) | White – IT1106 |
---|
Black – IT1105
Step 1:
Remove all four M8 countersink bolts from the base of the ArcM 12.
Step 2:
Remove the mount plate from the T80 bracket by removing the M10 nut as shown.
Step 3:
Attach the mounting bracket to the base of the cabinet using all four bolts,
spring washers and washers provided with the bracket.
Step 4:
Attach the mounting plate to the ceiling bracket
Step 5:
With the lifting gear in place adjust the angle of the bracket using the bolt
on the bracket assembly.
Step 6:
Tighten the bolt on the bracket to fix the loudspeaker in position.
Note:
It is possible to mount the ArcM loudspeaker 180° as shown in figure 7.9.
Follow the procedure detailed above.
Service
Void ArcM 12 loudspeakers should only be serviced by a fully-trained technician.
No user serviceable parts inside. Refer servicing to your dealer.
Return authorization
Before returning your faulty product for repair, please remember to get an
R.A.N. (Return Authorisation Number) from the Void dealer who supplied the
system to you. Your dealer will handle the necessary paperwork and repair.
Failure to go through this return authorization procedure could delay the
repair of your product.
Note that your dealer will need to see a copy of your sales receipt as proof
of purchase so please have this to hand when applying for return
authorization.
Shipping and packing considerations
- When sending a Void ArcM 12 loudspeaker to an authorised service centre, please write a detailed description of the fault and list any other equipment used in conjunction with the faulty product.
- Accessories will not be required. Do not send the instruction manual, cables or any other hardware unless your dealer asks you to.
- Pack your unit in the original factory packaging if possible. Include a note of the fault description with the product. Do not send it separately.
- Ensure safe transportation of your unit to the authorized service center.
Appendix
Architectural specification
The loudspeaker shall be a passive, two-way, bi-amped system consisting of one
high power 12” (304.8 mm) direct radiating reflex loaded low frequency (LF)
transducer and 1.4” (35.56 mm) exit diameter (HF) co-axially-mounted neodymium
high frequency (HF) compression transducer in a 15 mm birch ply enclosure. The
low-frequency transducer shall be constructed on a cast aluminum frame, with a
treated paper cone, 88 mm (3.5”) voice coil, wound with aluminum wires on a
high-quality voice coil former, for high power handling and long-term
reliability. The high-frequency transducer shall be bolted through the rear of
the magnet structure belonging to the LF transducer to form a co-axial drive
unit. The sound will project through a machined waveguide that exits in the
center of the low-frequency transducer to use the 203.2 mm (8”) baffle
diameter to achieve pattern control and low distortion. Performance
specifications for a typical production unit shall be as follows: the usable
on-axis bandwidth shall be 60 Hz to 18 kHz (±3 dB) and shall average 80°
directivity pattern for both horizontal and vertical axis (-6 dB down from on-
axis level) from 1 kHz to 12 kHz; maximum SPL of 130 dB continuous, 133 dB
peak measured at 1 m using IEC268-5 pink noise. Power handling shall be 500 W
AES at a rated impedance of 8 Ω; crossover point at 1.2 kHz using a 2nd order
filter (12 dB per octave). The system shall be powered by its own dedicated
power amplification module with DSP management. The enclosure shall be of a
trapezoidal asymmetrical shape constructed from a 15 mm 13-laminate birch
plywood with a textured polyurea finish and shall contain fixture points for a
pressed, weather-resistant, powder-coated steel grille with foam filter to
protect the transducers. The cabinet shall have an integral pole mount socket
and a type 80 mounting point to suit portable and permanent applications.
External dimensions of (W) 550 mm x (H) 330 mm x (D) 463 mm (21.7” x 13” x
18.2”). Weight shall be 19 kg (41.9 lbs). The loudspeaker shall be the Void
Acoustics ArcM 12.
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