VOID ArcM 12 12 Inch 2 Way Coaxial Stage Monitor Loudspeaker User Guide

: June 10, 2024
: VOID

VOID ArcM 12 12 Inch 2 Way Coaxial Stage Monitor Loudspeaker

Product Information

ArcM-12 Speaker by Void Acoustics

The ArcM-12 by Void Acoustics is a professional-grade loudspeaker designed for sound engineers. The speaker is carefully manufactured and tested before being dispatched to ensure its quality. The speaker is available in both passive and active modes, making it versatile for various sound applications. It has a sleek design and comes with key features such as a speakON™ input connector, which ensures secure and reliable connectivity. The speaker also complies with safety regulations and has an EC declaration of conformity, UKCA marking, and WEEE directive for environmental protection.

Product Usage Instructions

ArcM-12 Speaker

Before using the ArcM-12 speaker, please read and follow the safety instructions provided in the user guide. The user guide is subject to change without notice, so it’s essential to visit the official website to access the latest version.

Unpacking and Checking

When you receive your ArcM-12 speaker, ensure that it’s in pristine condition before signing for delivery. If there are any damages or defects, please inform the shipping company and your dealer immediately. Afterward, carefully remove the speaker from its original packaging.

Cable and Wiring

For fixed installations, ensure that you follow cable considerations and wiring diagrams provided in the user guide to ensure electrical safety. The speaker has different wiring diagrams for passive and active modes, so ensure that you follow the correct wiring diagram.

Mounting

The ArcM-12 speaker can be mounted on poles or ceilings. Ensure that you follow the installation safety instructions provided in the user guide to prevent accidents during installation.

Service

If you need to return the speaker, you must have a return authorization. The user guide provides shipping and packing considerations to ensure that the speaker is safely returned. By following the product usage instructions provided in the user guide, you can enjoy high-quality sound from the ArcM-12 speaker by Void Acoustics.

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 the 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 is 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.
UG10569-2.1 – ArcM-12 User Guide V2.1

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 landfills will be reduced and natural resources will thus be conserved. The Waste Electrical and Electronic Equipment Directive (WEEE Directive) aims to minimize the impact of electrical and electronic goods on the environment. Void Acoustics Research Ltd complies with 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 optimized 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 passive, 1 x 8 (LF) and 1 x 16 (HF) active
Power handling2	500 W AS
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

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-1

Dimensions

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-2

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 load	8 load	4 load	2 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

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-3

	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

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-4

Bias Q2	Output 1 or 2
Output	LF (12”) and HF (1.4”)
Max parallel units	4 (2 loads to the amplifier)

Bias Q3/Q5 speakONTM wiring passive mode

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-5

Bias Q3/Q5	Single channel
Output	LF (12”) and HF (1.4”)
Max parallel units	4 (2 loads to the amplifier)

Wiring diagram active mode

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-6

	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

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-7

Bias Q2	Output 1	Output 2
Output	LF (12”)	HF (1.4”)
Max parallel units	4 (2 loads to the amplifier)	4 (4 loads to the amplifier)

Bias Q3/Q5 speakONTM wiring active mode

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-9

Bias Q3/Q5	Output 1	Output 2
Output	LF (12”)	HF (1.4”)
Max parallel units	4 (2 loads to the amplifier)	4 (4 loads to the amplifier)

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 the 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.

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 mounting 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.

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-16

Step 4:
Attach the mounting plate to the ceiling bracket.

VOID-ArcM-12-12-Inch-2-Way-Coaxial-Stage-Monitor-Loudspeaker-
FIG-17

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.

Servic

Void ArcM 12 loudspeakers should only be serviced by a fully-trained technician.
No user-serviceable parts inside. Refer to servicing to your dealer.

Return authorization
Before returning your faulty product for repair, please remember to get a 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 authorized service center, 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 an 80° directivity pattern for both horizontal and vertical axis (-6 dB down from the 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 a 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.

NORTH AMERICA