Void Bias VQ User Manual

Bias VQ

User Guide V1.0

©2017 Void Acoustics Research Ltd.

Version 1.0

This user guide is subject to change without notice.
For the latest online version, visit: www.voidacoustics.com

Void Acoustics and the Void logo are registered trademarks of Void
Acoustics Research Ltd. in the United Kingdom, USA and other
countries; all other Void trademarks are the property of Void Acoustics
Research Ltd.

1 Important safety instructions 6
2 Bias Series 7

2.1 Welcome 7

2.2 The Bias Series 7

2.3 Unpacking & checking for shipping damage 7

2.4 Disposal of the packing material 7
3 Installation 8

3.1 Cooling 8

3.2 Cleaning 8

3.3 LED chart 9

3.4 AC mains supply 9

3.5 Precautions regarding installation 9
4 Connections 10

4.1 Signal grounding 10

4.2 Signal input 10

4.3 Line output 10

4.4 Loudspeaker connections 10

4.5 Ethernet connection 10

4.6 Auxiliary voltage 10
5 Warranty and assistance 11

5.1 Warranty 11

5.1.1 Product warranty 11

5.1. 2 Return of Goods 11

5.1. 3 Repair or replacement 11

5.1.4 Cost and responsibility of transport 11

5.2 Assistance 11

Bias VQ User Guide V1.0

Page 1

Contents

Mechanical drawings

337,3 mm

44,1 mm

437,6 mm

379,5 mm

482 mm

Bias VQ User Guide V1.0

Page 2

1. Channel 1 input attenuator

2. Channel 1 meter LEDs

3. Channel 2 meter LEDs

4. Channel 2 input attenuator

5. On/off power switch

6. Channels 1-2 ready LED

7. Channels 1-2 temperature warning LED

8. AC mains power IEC C13 connector

9. Air vents

10. Channel 3-4 line input XLR connector

11. Channel 1-2 line input XLR connector

12. Channel 4 output speakONTM connector

13. Link switch channels 3-4

14. Channel 3 output speakON

TM

connector

15. Channel 2 output speakONTM connector

16. Link switch channels 3-4

17. Channel 1 output speakONTM connector

18. Amplifier’s remote ID selector

19. Preset LEDs

20. Preset selector buttons

21. Auxiliary voltage connector Pheonix MCV 1,5/ 2-G-3, 81

22. Ethernet port

Components

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

0

5

9

4

8

3

7

2

6

1

1 2 3 4

6 7

5

8

1613 1714

18 19 20 21 22

9

10 11

1512

Bias VQ User Guide V1.0

Page 3

Connectors and wiring

Loudspeaker wiring

Input connectors pinout

Output connectors pinout

Analog input

XLR-M pinout

Pin 1 GND

Pin 2

HOT

Pin 3

COLD

Analog input

TRS Jack pinout

Tip

HOT

Ring

COLD

Sleeve GND

A

C

B

HOT

HOT

1

S

2

R

3

T

COLD

COLD

GND

GND

Analog line output

XLR-F pinout

Pin 1 GND

Pin 2

HOT

Pin 3

COLD

HOT

1

2

3

COLD

GND

1+

2+

1–

2–

1+

2+

1–

2–

1+

2+

1–

2–

Single channel mode

speakON

connector

Channel 1

speakON

connector

speakON

connector

Biamp

CH1

CH2

Bridge mode

1+

2+

1–

2–

1+

2+

1–

2–

Channel 2

speakON

connector

CH2+

CH1+

CH2–

CH2–

Channel 1

speakON

connector

CH1+

CH1+

CH2–

CH1–

Bias VQ User Guide V1.0

Page 4

Regulatory information

FCC COMPLIANCE NOTICE
This device complies with part 15 of the FCC rules. Operation
is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this device must ac­cept any interference received, including interference that
may cause undesired operation.

CAUTION: Changes or modifications not expressly ap­proved by the party responsible for compliance could void
the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to com­ply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to pro­vide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause
harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more
of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and

receiver

• Connect the equipment into an outlet on a circuit differ-

ent from that to which the receiver is connected.

• Consult the dealer or an experienced radio/ TV techni-

cian for help.

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 dis-

card 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 Acoustic
Research Ltd comply 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 site.

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 Powesoft S.p.A. for reprocessing. For more information
about where you can send your waste equipment for recy­cling, please contact Powesoft S.p.a. or one of your local
distributors.

EC DECLARATION OF CONFORMIT Y
Manufacturer:
Void Acoustics Research Ltd
Unit 15 Dawkins Ind Est
Poole, Dorset
BH15 4JY
United Kingdom

We declare that under our sole responsibility the products:
Model Name: Bias VQ

Intended use: Professional Audio Amplifier

Are in conformity with the provisions of the following EC
Directives, including all amendments, and with national leg­islation implementing these directives:

• 2006/95/EC Low Voltage Directive

• 2004/108/EC Electromagnetic Compatibility Directive

• 2002/95/CE RoHs Directive

The following armonized standards are applied:

• EN 55103-1

• EN 55014-1

• EN 55022

• EN 61000-3-2

• EN 61000-3-3

• EN 61000-3-11

• EN 61000-3-12

• EN 5 510 3 -2

• EN 61000-4-2

• EN 61000-4-3

• EN 61000-4-4

• EN 61000-4-5

• EN 61000-4-6

• EN 61000-4-11

• EN 60065

For compliance questions only: [e-mail]

Bias VQ User Guide V1.0

Page 5

CAUTION

RISK OF ELEC TRIC SHOCK

DO NOT OPEN

Electrical energy can perform many useful functions. This
unit has been engineered and manufactured to ensure
your personal safety. But IMPROPER USE CAN RESULT IN
POTENTIAL ELECTRICAL SHOCK OR FIRE HA ZARD.
In order not to defeat the safeguards incorporated into this
product, obser ve the following basic rules for its installation,
use and service. Please read these “Important Safeguards”
carefully before use.

Important safety instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this equipment near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in accord­ance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers)
that produce heat.

9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.

11. Only use attachments/accessories specified by the
manufacturer.

12. Use only 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.

13. Unplug this apparatus during lightning storms or when
unused for long periods of time.

14. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been dam­aged in any way, such as 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.

WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT ATTEMPT TO OPEN ANY PART OF THE UNIT. NO
USER-SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL.

TO COMPLETELY DISCONNECT THIS APPARATUS FROM
THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD
PLUG FROM THE AC RECEPTACLE.

THE MAINS PLUG OF THE POWER SUPPLY CORD MUST
REMAIN READILY ACCESSIBLE.

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE, DRIPPING OR SPL ASHING LIQUIDS. OBJECTS
FILLED WITH LIQUIDS, SUCH AS VASES, SHOULD NOT BE
PLACED ON THIS APPARATUS.

THE UNIT MUST BE INSTALLED IN RACK CABINETS:
INSTEAD OF CONNECTING THE AMPLIFIER TO THE
POWER GRID DIRECTLY, PLUG THE AMPLIFIER’S MAINS
CONNECTIONS VIA A SECTIONING BRE AKER TO A
POWER DISTRIBUTION PANEL INSIDE THE RACK CABINET.

WHEN THE UNIT IS INSTALLED IN A CABINET OR A SHELF,
MAKE SURE THAT IT HAS SUFFICIENT SPACE ON ALL
SIDES TO ALLOW FOR PROPER VENTILATION (50 CM
FROM THE FRONT AND REAR VENTILATION OPENINGS).

CONNECTION TO THE MAINS SHALL BE DONE ONLY BY A
ELECTROTECHNICAL SKILLED PERSON ACCORDING THE
NATIONAL REQUIREMENTS OF THE COUNTRIES WHERE
THE UNIT IS SOLD.

EXPLANATIONS OF GRAPHICAL SYMBOLS

The triangle with the lightning bolt is used to alert the
user to the risk of electric shock.

The triangle with the exclamation point is used to alert
the user to important operating or maintenance in­structions.
The CE-mark indicates the compliance with the low
voltage and electromagnetic compatibility.

Symbol for earth/ground connection.

Symbol indicating that the equipment is for indoor use
on l y.

Symbol for conformity with Directive 2002/96/EC and
Directive 2003/108/EC of the European Parliament on
waste electrical and electronic equipment (WEEE).

1 Important safety instructions

Bias VQ User Guide V1.0

Page 6

2 Bias Series

2.1 Welcome

Many thanks for purchasing this Void Acoustics Bias Series
amplifier. We truly appreciate your suppor t. 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
ground-breaking 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 to use this product
safely and ensure it performs to its full capability.

2.2 The Bias Series

Bias Series amplifiers are specifically designed for touring
and live applications. The amplifiers in this series offer
smaller dimensions, lighter weight and the amazing sound
quality and reliability of all Void products.

Bias Series amplifiers have power ratings suitable for a
vast range of common applications including 70V/100V
distributed line systems.

The Bias Series offers complete protection against any
possible operation error. Every amplifier in this series is
designed to work under a large range of possible conditions,
delivering maximum power with maximum safety and
an outstanding long term reliability. Anticipating potential
problems at the design stage means your show always goes
on!

2.3 Unpacking & checking for shipping
damage

Your Void product has been completely tested and inspect­ed before leaving the factory. Carefully inspect the shipping
package before opening it, and then immediately inspect
your new product. If you find any damage notify the shipping
company or reseller immediately.

The box contains the following:

• 1x Bias Series amplifier;

• 1x AC mains power cord;

• 1x quick guide.

2.4 Disposal of the packaging material

The transport and protective packaging has been selected
from materials which are environmentally friendly for dis­posal and can normally be recycled.

Rather than just throwing these materials away, please en­sure they are offered for recycling.

Bias VQ User Guide V1.0

Page 7

3 Installation

The common installation of the amplifier is in rack cabinets:
in order to limit the risk of mechanical damages, the ampli­fiers must be fixed to the rack using both frontal and rear
mounting brackets.

Note: Instead of connecting the amplifier to the power grid
directly, plug the amplifier’s mains connections to a power
distribution panel inside the rack cabinet.

3.1 Cooling

Install the amplifier in a well-ventilated location: the ventila­tion openings must not be impeded by any item such as
newspapers, tablecloths, curtains, etc; keep a distance of
at least 50 cm from the front and rear ventilation openings
of the amplifier.

All Void amplifiers implement a forced-air cooling system
to maintain low and constant operating temperatures.
Drawn by the internal fans, air enters from the front panel
and is forced over all components, exiting at the back of the
amplifier.

The amplifier’s cooling system features “intelligent” variable­speed DC fans which are controlled by the heatsink tem­perature sensing circuits: the fans speed will increase only
when the temperature detected by the sensors rises over
carefully predetermined values. This ensures that fan noise
and internal dust accumulation are kept to a strict minimum.
Should however the amplifier be subject to an extreme ther­mal load, the fan will force a very large volume of air through
the heat sink. In the extremely rare event that the amplifier
should dangerously overheat, sensing circuits shut down all
channels until the amplifier cools down to a safe operating
temperature. Normal operation is resumed automatically
without the need for user intervention.

Bias Series amplifiers can be stacked one on top of the other
due to the efficient cooling system they are equipped with.

There is however a safety limit to be observed: in case a rack
with closed back panels is used, leave one rack unit empty
every four installed amplifiers to guarantee adequate air flow.

3.2 Cleaning

Always use a dry cloth for cleaning the chassis and the front
panel. Air filter cleaning should be scheduled according to
the dust levels in the amplifier’s operating environment.

Disconnect the AC main source before

attempting to clean any part of the amplifier

In order to clean the vent filters you need to remove the front
cover: never attempt to open any other part of the unit.

By means of a screwdriver Phillips PH1, unscrew the two
screws on the left and right of the cover grills on the front
panel (refer to FIG. 3), gently lift the covers and remove the
filters.

You may use compressed air to remove the dust from filters,
or wash it with clean water: in the latter case ensure that the
filters are dry before reassembly.

FIG. 1: Mounting brackets and air flow direction.

Mounting

Brackets

FIG. 2: How to stack the amplifiers in closed racks.

4 amp stacked

1 unit space every

4 amp stacked into

closed rack cabinet

FIG. 3: Cleaning air filters.

Bias VQ User Guide V1.0

Page 8

3.3 LED chart

Signal metering

Colour Light on Label

RED

Channel output level has

reached clipping limits

OR

Short circui t protec tion

has been engaged

CLIP

GREEN

Channel output level is

above -6 dB of max ou t-

put level

-6 dB

GREEN

Channel output level is

above -18 dB of max

output level

-18 d B

GREEN

Input signal presence

SIGNAL

Status

Colour Light on Label

GREEN

Channel is ready

READY

YELLOW

Output p ower is being

reduce d due to heat sink

temperature exceeding

75° C*

TEMP

* Should the tempe rature exc eeds 85°C, th e LED will s tay on and the chan nel wil l
be muted. T he ampl ifier wi ll resume normal func tionin g and the LED will tur n off
automati cally w hen the te mperature fal ls below 75°C.

3.4 AC mains supply

The AC Main connection is made via the IEC C13 connector
on the rear panel. Bias Series amplifiers are factory configured
to work either with 115V or 230V AC mains.

Make sure the AC mains voltage used
is within the acceptable operating voltage

range: 115V±10% or 230V ±10%.

It is important to connect the ground
for safety, do not use adapters that disable

the ground connection.

Connection to the mains shall be done

only by a electrotechnical skilled person

according the national requirements of

the countries where the unit is sold.

The FIG. 4 shows how to connect the mains power cable to
the amplifier.

3.5 Precautions regarding installation

Placing and using the amplifier for long periods of time
on heat generating sources will affect its performance.
Avoid placing the amplifier on heat generating sources.
Install this amplifier as far as possible from tuners and
TV sets. An amplifier installed in close proximity of such
equipment may experience noise or generic performance
degradation.

WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK

• This device must be powered exclusively by earth
connected mains sockets in electrical networks
compliant to the IEC 364 or similar rules.

• Install the unit into rack cabinet.

• A sectioning breaker between the mains
connections and the amplifier must be installed
inside the rack cabinet. Suggested device
is 16A/250VAC, C or D curve, 10 kA.

• Before powering this amplifier, verify that
the correct voltage rating is being used.

• Verify that your mains connection is capable of
satisfying the power ratings of the device.

• Do not use this amplifier if the electrical
power cord is frayed or broken.

• Output terminals are hazardous: wiring connection
to these terminals require installation by an instructed
person and the use of ready-made leads.

• Take care to lock the output terminal
before switching the device on.

• To avoid electrical shock, do not touch any exposed
speaker wiring while the amplifier is operating.

• Do not spill water or other liquids into or on the amplifier.

• No naked flame sources such as lighted
candles should be placed on the amplifier.

• Do not remove the cover. Failing to do so will
expose you to potentially dangerous voltage.

• The manufacturer cannot be held responsible for
damages caused to persons, things or data due
to an improper or missing ground connection.

• Contact the authorized ser vice centre for
ordinary and extraordinary maintenance.

It is absolutely necessary to verify these fundamental

requirement of safety and, in case of doubt, require

an accurate check by qualified personnel.

lock the plug

open the lock and
insert the plug

FIG. 4: Mains connector.

Bias VQ User Guide V1.0

Page 9

4 Connections

Make sure the power switch is off before attempting to make
any input or output connections.

By using good quality input and speaker cables, the likeli­hood of erratic signal behaviour is reduced to a minimum.
Whether you make them or buy them, look for good quality
wires, connectors and soldering techniques.

4.1 Signal grounding

There is no ground switch or terminal on the Bias Series am­plifiers. All shield terminals of input connections are directly
connected to the chassis. This means that the unit’s signal
grounding system is automatic. In order to limit hum and/
or interference entering the signal path, use balanced input
connections.

In the interests of safety, the unit MUST always operate
with electrical safety earth connected to the chassis via the
dedicated wire in the 3-wire cable (refer to §3 : 4.AC main s

supply). Never disconnect the ground pin on the AC mains

power cord.

4.2 Signal input

Analog input is provided by means of two Neutrik XLR connectors;
refer to Panel C, p. 8 and Panel F, p. 4. Signal polarity for
XLR and TRS plugs is shown in Panel H, p. 5.

4.3 Line output

Line out is provided in two channels models – M14D, M20D,
M30D – via a couple of XLR connectors on the rear panel
(refer Panel C, p. 8). In DSP equipped models, the output
signal is pre-DSP, being a replica of the input signal.

4.4 Loudspeaker connections

Output terminals are hazardous: wiring connection
to these terminals require installation by an
instructed person and the use of ready-made
leads.

Use suitable wire gauges to minimize power and

damping factor losses in speaker cables.

The output connectors are Neutrik NL4MD speakON located
on the rear panel: refer to Panel C, p. 8 and Panel F, p.

4. Each connector brings an output channel pair making
easy single ended and bridged loads.

The speakON pinout and the suggested connections are
shown in Panel I, p. 5. In the single channel mode wiring,
the 1+ pin corresponds to positive, the 1– to negative signal
polarity.

4.5 Ethernet connection

Bias Series HDSP+ETH models can be remotely controlled
via an Ethernet connection through a personal computer
and Void Armonía Pro Audio Suite™ software.

Void recommend the use of Ethernet Cat5 straight through
– patch – cables with pin/pair assignments TIA/EIA-568-B,
i.e. T568B.

4.6 Auxiliary voltage

On Bias Series HDSP+ETH models the auxiliary voltage
connector is used to enable remote management of the
DSP when the system is off.

When powered with an external 12 V

DC

(1 A max) the internal
controller allows to configure the DSP via the Armonía Pro
Audio Suite software, even without AC mains supply.

Bridge mode connection is possible only in lo-Z operating
mode: minimum load impedance shall be 8Ω. Bridging of
adjacent channels is possible for the following pairs: chan­nels 1 with 2 for all models and channels 3 with 4 for MxxQ
models.

In order to set the output in bridge mode:

• parallel the input by pressing on the link button;

• connect the loudspeaker to just one speakON: 2+ pin is

the positive and the 2– the negative.

Some models of the Bias Series amplifiers are designed to
work with hi-Z loads in 70V / 100V distributed lines; refer to
TAB. 1 for compatibility.

Model 70V 100 V

M14D no no

M14D HDSP+ETH no no

M20D yes w/external HPF no

M20D HDSP+ETH

yes w/internal

preset

no

M30D

yes w/external HPF

and peak limiter

yes w/external

HPF

M30D HDSP+ETH

yes w/internal

preset

yes w/internal

preset

M28Q no no

M28Q HDSP+ETH no no

M50Q

yes w/external HPF

and peak limiter

yes w/external

HPF

M50Q HDSP+ETH

yes w/internal

preset

yes w/internal

preset

TAB. 1: Hi-Z distributed lines compatibility chart.

Bias VQ User Guide V1.0

Page 10

5 Warranty and assistance

5.1 Warranty

5.1.1 Product warranty

Void guarantees its manufactured products to be free from
defective components and factory workmanship for a period
of 48 (forty eight) months, starting from the date of purchase
printed on Void’s (or any of its Authorized Dealer’s) invoice
to the end customer. All warranty repairs and retrofits must
be performed at Void facilities or at an Authorized Ser vice
Centre at no cost for the purchaser. Warranty exclusion:
Void’s warranty does not cover product malfunctioning or
failure caused by: misuse, abuse, repair work or alterations
performed by non-authorised personnel, incorrect connec­tions, exposure to harsh weather conditions, mechanical
damages (including shipping accidents), and normal wear
and tear. Void will perform warranty services provided that
the product is not damaged during transportation.

5.1.2 Return of Goods

Goods can be returned to Void only after they have been
granted a Return Merchandise Authorization (RMA) num­ber to be attached to the external packaging. Void (or its
Authorized Service Centre) has the right to refuse any re­turned good without a RMA number.

5.1.3 Repair or replacement

Void reserves the right to repair or replace any defective
goods covered by product warranty at its sole discretion
and as it deems best.

5.1.4 Cost and responsibility of transport

The purchaser (or end user/customer) is solely responsible
for all transportation costs and risks associated with sending
warranty covered goods to Void or its Authorized Service
Centre. Void will assume full responsibility and cover all
costs incurred to send the goods back to the purchaser (or
end user/customer).

5.2 Assistance

All servicing and repairs for Void Bias series amplifiers is
handled by Powersoft Worldwide. Please follow the instruc­tions below in case of any difficulties.

There are no user-serviceable parts in your amplifier. Refer
servicing to qualified technical personnel. In addition to hav­ing an in-house service department, Powersoft supports a
network of authorized ser vice centres. If your amplifier needs
repair contact your Powersoft dealer (or distributor). You can
also contact the Powersoft Technical Service depar tment to
obtain the location of the nearest authorized service centre.
Even though most product malfunctioning can be solved
at your premises through Powersoft Customer Care
or your direct knowledge, occasionally, due the nature
of the failure, it might be necessary to return defective
products to Powersoft for repair. In the latter case, before
shipping, you are kindly asked to follow step by step the
procedure described below: Obtain the “Defect Report
Form” by contacting our Customer Care Department
via email: [e-mail] or download the
“Defect Report Form” from Powersoft’s website
(http://www.powersoft-audio.com/en/support/service).

Fill out one “Defect Report form” for each returned item
(the form is an editable tab guided document) and save
as your name, amp model and serial Number (for ex­ample: distributornamek10sn17345.doc) providing all
required information except the RMA code/s and send it to
[e-mail] for Powersoft approval.

In case of defect reports approved by the Powersoft
Customer Service Representative you will receive an RMA
authorization code (one RMA code for each returning de­vice). Upon receiving the RMA code you must package the
unit and attach the RMA code outside the pack, protected
in a waterproof transparent envelope so it is clearly visible.

All returning items must be shipped to the following address:

Powersoft
Via Enrico Conti, 13-15
50018 Scandicci (FI) Italy

In case of shipment from countries NOT belonging to the
European Community make sure you have also followed the
instructions described in the document available for down­load at the TEMPORARY EXPORTATION / IMPORTATION
PROCEDURE link at http://www.powersoft-audio.com/en/
support/service.

Thank you for your understanding and cooperation and
continued support as we work to improve our par tnership.

Bias VQ User Guide V1.0

Page 11

Audio

Gain

32 dB, 30 dB, 28 dB, 26 d B,
24 dB, 22 dB, 20 dB, 18 dB,

14 dB, 4 dB, -∞, user sel ectab le

Input sensitivity @ 8 Ω 1.94 V / +8 dBu

Max input level 6 V / +17.8 dBu

Frequency Resp onse ( ±0.5 d B , 1 W @ 8 Ω) 20 Hz - 20 kHz

Crosstalk (1 kHz) > 70 dB

S/N ratio (20 H z - 20 kHz A-Weig hted @ 8 Ω) > 110 dB

Input impedance 10 kΩ balanc ed

THD+N (fro m 0.1 W to Full Power)

< 0.02%

(typical < 0.005%)

DIM (from 0.1 W to Full Power)

< 0.02%

(typical < 0.005%)

Slew Rate (input fil ter bypassed @ 8 Ω) > 40 V/µs

Dampin g Factor @ 8 Ω, 20 Hz - 100 Hz > 5000

AC Mains Power

Power supply Univer sal reg ulated sw itch more with PFC

Nominal voltage (±10%) 100-240 V @ 50- 60Hz

Power fac tor (> 500 W ouput) > 0.95

Consumption/current draw @ 115 V @ 230 V

Idle 64 W 0.6 A 64 W 0.51 A

1/8 Max Output Power @ 4 Ω 605 W 11 .6 A 605 W 5.8 A

1/4 Max Output Power @ 4 Ω 1772 W 22.2 A 17 72 W 11.1 A

AC Mains connector

IEC C14 inlet;

region-specific power cord provided

Thermal

Operating temperature 0° - 45° C / 32° - 113° F

Cooling

Fan, continuously variable speed,

temperature controlled, front to rear a irflow

Thermal dissipation

Idle 218 BTU/h 55 kcal/h

1/8 Max Output Power @ 4 Ω 955 BTU/ h 241 kc al/ h

1/4 Max Output Power @ 4 Ω 1781 BTU/h 449 kcal /h

DSP*

Architecture Analog Devices SigmaDSP® 50 MIPS

AD/DA converters Cirrus Logic® 24 bit 48 kHz

Internal precision 28 bit data path with 56 bit internal proc essing

Latency 1.0 ms fixed latency a rchite cture

Memory/Presets

Up to 4 local presets, unlimi ted via A rmonía Pro

Audio Suite™ software

Delay

340 ms inp ut delay

10 ms per chan nel out put del ay

Equalizer

Parametric IIR: peaking, hi/lo-shelving, all-pass,

band-pass, band-stop, hi/lo-pass

Crossover

Butterworth, Linkwitz-Riley, Bessel:

6 dB/oct to 48 dB/oct (IIR)

Limite rs

Peak limiter, RMS limiter,

frequency dependent RMS limiter

Remote control Armon ía Pro Audi o Suite™ soft ware

Networking*

Standards compliance 1x RJ45 auto-sensing 10/100 Mbps U TP por t

Supported topologies star, daisy-chain, closed loop

Remote interfa ce Armonía Pro Audio Suite™

Auxiliary supply

12 V / 1 A max for DSP ma nagement and r emote on /

off via 2 p in Phoe nix2 MCV 1,5/ 2-G -3,81

Construction

Dimen sions L x H x W 483 m m x 44.5 mm x 379 mm (19.0 in x 1.8 in x 14.9 in)

Weight 7.4 kg (16 lb)

Output Stage

Maxi mum outp ut power p er channel @ 8 Ω 750 W

Maxi mum outp ut power p er channel @ 4 Ω 1250 W

Maxi mum outp ut power @ 8 Ω B ridge d 2500 W

Max ou tput powe r per ch. @ Hi-Z distributed line 70V** 1000 W

Max ou tput powe r per ch. @ Hi-Z distributed line 100V** 125 0 W

Maximum unclipped output voltage 135 V

peak

Maximum output current 65 A

peak

The power figure is calculated by drivin g and loading sym metric ally all the
channels: uneven loads allow to achieve highest performance.

Bias VQ HDSP+ETH

Channel Handling

Number of channels

4 in / 4 out mon o,

bridgeable p er ch. pai r

Analog input connectors 4x XLR

Speake r connectors 4x NL4MD spea kON

* Only f or HDSP+ET H model. ** DSP prese t or exte rnal hig h-pa ss and vol tage lim iter re quired .

Bias VQ User Guide V1.0

Page 12

Bias VQ User Guide V1.0

Page 13

www.voidacoustics.com

Head Oce

Void Acoustics
Unit 15 Dawkins Road Industrial Estate
Poole
Dorset
BH15 4JY
England

[phone]

[e-mail]

Registered in England & Wales No. 07533536

North America

Void Acoustics North America

503-854-7134

[e-mail]