Nova DXI8200 User manual

USER'S MANUAL
PROFESSIONAL AUDIO

DXI8200
The information contained in this manual is subject to change without notice.
No part of this manual may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying and recording of any kind.
USER'S MANUAL
PARALLEL BRIDGE
PROTECT
CLIP
SIGNAL
MUTE MUTE
PARALLEL PARALLEL PARALLELBRIDGE BRIDGE BRIDGE
PROTECT PROTECT PROTECT
CLIP CLIP CLIP
SIGNAL SIGNAL SIGNAL
MUTE MUTE MUTEMUTE MUTE MUTE
POWER
POWER
ON
DXI 8200
8 CHANNEL
CLASS-D AMPLIFIER
8 CHANNEL CL ASS-D AMPLIFIER

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DXI8200 8 CHANNEL CLASS-D AMPLIFIER DXI8200 8 CHANNEL CLASS-D AMPLIFIER
LIMITED WARRANTY
THE WARRANTY
For a period of One (1) year from the date of delivery to the original purchaser (as shown on the original invoice or sales
receipt), NOVA International Group Limited warrants to the ORIGINAL OWNER of each product (provided it was
purchased at an Authorized NOVADealer) that it is free of defects in materials and workmanship and that each product
will meet or exceed all factory published specifications for each respective model. NOVA agrees to repair or replace (at its
discretion) all defective parts at no charge for labor or materials; subject to following provisions:
WARRANTY VIOLATIONS
NOVA shall take no responsibility for repair or replacement as specified under this warranty, if the damaged product has
been subject to misuse, accident, neglect or failure to comply with normal maintenance procedures; or if the serial
number has been defaced, altered or removed. Nor will NOVA accept responsibility for, or resulting from, improper
alterations or unauthorized parts or repairs. This warranty does not cover any damage to speakers or any other
consequential damage resulting from breach of any written or implied warranty.
NOVA WARRANTY PROVISIONS
NOVA will remedy any defect, regardless of the reason for failure (except as excluded ) by repair, or replacement. NOVA
will remedy the defect and ship the product within a reasonable time after receipt of the defective product at an NOVA
Authorized Service Center.
TO OBTAIN WARRANTYSERVICE
In the event that an NOVA product requires service, the Owner must contact NOVA or an Authorized NOVA Service
Center to receive an R.A.N. ( Return Authorization Number) and instructions on how to return the product to the NOVA
Authorized Service Center, or to the factory. NOVA (or its Authorized Service Center) will initiate corrective repairs upon
receipt of the returned product. Please save original carton and all the packing materials in case shipping is required. All
products being returned to the factory or service center for repairs must be shipped pre-paid.
If the repairs made by NOVA or the NOVA Authorized Service Center are not satisfactory, Owner is instructed to give
written notice to NOVA. If the defect or malfunction remains after a reasonable amount of attempts by NOVA to remedy
the defect or malfunction, the Owner shall then have the option to elect either a refund or replacement of said NOVA
product free of charge. The refund shall be an amount equal to but not greater than the actual purchase price, not
including any taxes, interest, insurance, closing costs and other finance charges (minus reasonable depreciation on the
product). If a refund is necessary, the Owner must make the defective or malfunctioning product available to NOVAfree
and clear of all liens or other restrictions.
MODIFICTTIONS OF EQUIPMENT
NOVA reserves the right to modify or change equipment (in whole or part) at any time prior to delivery thereof, in order to
include therein electrical or mechanical improvements deemed appropriate by NOVA; but without incurring any liability to
modify or change any equipment previously delivered, or to supply new equipment in accordance with any earlier
specifications.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES
YOU,THE OWNER, ARE NOT ENTITLED TO RECOVER FROM NOVA ANY INCIDENTAL DAMAGES RESULTING
FROM ANY DEFECT IN THE NOVA PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR
PRODUCTS RESULTING FROM SUCH ADEFECT.
WARRANTY ALTERATIONS
No person has the authority to enlarge, amend, or modify this Warranty. This Warranty is not extended by the length of
time which the Owner is deprived of the use of product. Repairs and replacement parts provided pursuant to the
Warranty shall carry only the non-expired portion of the Warranty.
THIS STATEMENT OF WARRANTY SUPERSEDES ALL OTHERS CONTAINED IN THIS MANUAL
The information furnished in this manual does not include all of the details of design and engineering of this
particular product; not does it cover every possible application or situation concerning its usage, which may
occur during the installation, operation or maintenance of said NOVA product.
IMPORTANT
THE PRODUCT REQUIRES
CLASS 2 OUTPUT WIRING.
TO PREVENT ELECTRIC SHOCK, DO NOT
REMOVE TOP OR BOTTOM COVERS. NO
USER SERVICEABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE
PERSONNEL. DISCONNECT POWER CORD
BEFORE REMOVING REAR PANEL COVER
TO ACCESS GAIN SWITCH.
Shock Hazard - Do Not Enter
Choc Hasard - N*entrent
Schocke Hazard - Test Nicht
Betrete
Urto Hazard - Do Non Entrano
WARNING
TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE!
Magnetic Field
CAUTION: Do not locate sensitive high-gain equipment such as preamplifiers or tape
decks directly above or below this unit. Because this amplifier has a high power density, it
has a strong magnetic field which can induce hum into unshielded devices that are located
nearby. This field is strongest just above and below the unit. If an equipment rack is used,
we recommend locating the amplifier(s) at the bottom of the rack and the preamplifier or
other sensitive equipment at the top.
The lightning bolt triangle is
used alert the user to the
risk of electric shock.
The exclamation point triangle is used
to alert the user to important operating
and/or maintenance instructions.
Printed on
recycled paper.
CAUTION

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DXI8200 8 CHANNEL CLASS-D AMPLIFIER DXI8200 8 CHANNEL CLASS-D AMPLIFIER
Introduction
Congratulations on your purchase of a DXI8200 audio power amplifier. We would like to
thank you foryour confidence inus and ourproducts.
All the components were specially selected. Although the amplifier was designed to allow
straightforward and uninterrupted operation, improper handling or incorrect installation
could damage thepower amplifier.
Your amplifier represents the latest technology in power amplifier design. Please read this
manual carefully asit contains informationvital to thesafe operation of your amplifier.
Unpacking
Check the cartonbox and itscontents immediately tosee if there is any signof damage.
Upon unpacking inspect the amplifier, if you detect any damage inform the forwarding
agentwithout delay andask for thedamage to bedocumented.
Claims can onlybe made againstthe forwarder agentby the consignee.
Be sure tosave the cartonand all packagingmaterials for the carrier's inspection.
It's a good idea to save the carton and packing material even if the amplifier has arrived in
good condition. Should you ever need to ship the unit back to service office, or one of its
Service Center. Using only the original factory packaging will be the best way to save the
unit from carriernegligence.
Installation/Mounting
DXI8200 is 2- rack space units that can mount in a standard 19" rack. Four front panel
mounting holes areprovided.
Rear mounting earsgive additional supportespecially important inmobile sound systems.
The unit shouldnot to beinstalled in alocation with:
Toohigh ambient temperature,dust build-up orexcessive humidity;
Fog machines output'soriented to thearea of theamplifier;
Exhaust air ventilatorsand similar unitsnear the areaof the amplifier;
With permanent vibrations;
With excessive inductionor magnetic fieldsdue to tranformersand transmitters;
The ShowAlways Goes On
DXI8200 is completely protected against every possible error in operation and is designed
to work under every condition. It gives you maximum power with maximum safety and
increases long-term reliability. Anticipating potential problems at the design stage means
your show alwaysgoes on!
Front Panel
1. POWER switchand indicator
Turns powerto the unit on or off.The indicator lightsgreen when thepower is on.
2. PROTECT indicator
When the protection system is active,the indicator lights red. When this is lit, the amplifier or
power supply isauto-matically shut down,and no soundwill be output from the speakers.
3. CLIP indicator
This indicator willlight red whenthe output power exceeds 100 Wfor an 8 load or 200W for
a 4 load. When thisis lit, the limiter will automaticallyoperate.
4. SIGNALindicator
This indicator willlight green whenthe output level exceeds 2 Vrms. (This will light at 0.5W or
greater for an8 load, 1W orgreater for a4 load.)
A~H
5. Attenuator
These are detented knobs that attenuate the input signal of each channel ( ) over 41
steps in arange of 0dB ~- dB.
NOTE. Tooperate these knobs,use a slottedscrewdriver with ablade no wider than 5.5 mm.
6. MUTE indicator
This will lightred when muteis activated.
7. MUTE switch
This turns mutingon/off for eachchannel. Use athin rod toturn muting on/off.
8. PARALLELindicator
This will lightorange when therear panel MODEswitch is set to PARALLEL.
9. BRIDGE indicator
This will lightorange when therear panel MODEswitch is set to BRIDGE.
PARALLEL BRIDGE
PROTECT
CLIP
SIGNAL
MUTE MUTE
PARALLEL PARALLEL PARALLELBRIDGE BRIDGE BRIDGE
PROTECT PROTECT PROTECT
CLIP CLIP CLIP
SIGNAL SIGNAL SIGNAL
MUTE MUTE MUTEMUTE MUTE MUTE
POWER
1
234
5
67891
10 11

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DXI8200 8 CHANNEL CLASS-D AMPLIFIER DXI8200 8 CHANNEL CLASS-D AMPLIFIER
10. Fan intakegrill filter
One grill with foam filter is located on the front panel to prevent dust from entering the
amplifier. Foreasy cleaning of the filter thegrill is removable by simply pullingit off. The foam
filter should alwaysbe used. Thefan's variable speed control ensure low noise operationand
adapt the quantity of air required from the actual temperature inside the unit.
Thanks to thisadvanced system lownoise is guarantee.Do not block this intake!
11. Rackmounting ears
Two frontpanel mounting holesare provided oneach mounting ear.
1
2
433
Rear Panel
1. INPUT connectors
These are balanced input connectors. The included Eurob-lock connectors can be used to
make connections here.
2. MODE switches
These specify theamplifier s operation modefor each twochannels.
STEREO mode
Each channel (A~H)will operate independently.
BRIDGE mode
The amplifiers willbe bridged for pairs of adjacentchannels (A-B, C-D, E-F, G-H), obtaining a
high-power output.
PARALLELmode
The input signalswill be inputto the adjacentchannels (A-B, C-D, E-F,G-H) as well.
3. SPEAKERS connectors
These are barrierstrip type speakeroutput connectors.
NOTE
If using BRIDGE mode, connect the speakers to the +pin of channels A/C/E/G and
the - pin of channelsB/ D/F/H.
Do not connect the pin marked NC located in the center of the bottom row of the barrier
strip connectors.
4. AC inlet
Connect this to the socket end of the included AC power cable . Connect the plug end of the
AC power cableto anAC outlet ofthe correct voltage.

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DXI8200 8 CHANNEL CLASS-D AMPLIFIER DXI8200 8 CHANNEL CLASS-D AMPLIFIER
Speakers can be connected to the DXI8200 using the following three mode settings. The
total load impedance of the speakers that can be connected will depend on the mode
setting. Do not use a setup that has a lower impedance than the minimum values shown
below.
STEREO mode
If the rear panel MODE switch is set to STEREO, each channel will operate independently. You
can use thefront panel attenuatorsto adjust theattenuation for each channel independently.
PARALLEL
MUTE
BRIDGE
MUTE
Source:
Channel B
Source:
Channel A
PARALLELmode
If the rear panel MODE switch is set to PARALLEL, theinput signals will be input to the adjacent
channels (A-B, C-D, E-F, G-H) as well. Either of adjacent two channels can be used as an input
connector. You can use the front panel attenuators to adjust the attenuation for each channel
independently.
BRIDGE mode
If the rear panel MODE switch is set to BRIDGE, the amplifiers will be bridged between adjacent
pairs of channels (A-B, C-D, E-F, G-H), and the IPA8200 will operate as a high-power amplifier.
Either of adjacent two channels can be used as an input connector. Use the front panel channel
A/C/E/G attenuators toadjust the attenuation.
PARALLEL
MUTE
BRIDGE
MUTE
Source:
Channel A
Source:
Channel A
PARALLEL
MUTE
Source:
Channel A
STEREO mode PARALLELmode BRIDGE mode
NOTE Total speaker impedance mustbe 4 ~8
NOTE Total speaker impedance mustbe 4 ~8
NOTE Total speaker impedance mustbe 8 ~16
SPECIFICATIONS
The DXI8200 amplifier has an automatic power factor correction system for a perfect main
network interface. Theamplifier is aresistive load for the main network, minimizing the reactive
power and the harmonic distortion on the current. The system allows performance to be
maintained even incircumstances of varying the mains voltage.
DXI8200
220W x8
120W x8
350W x4
160W x8
90W x8
320W x8
180W x8
100W x8
360W x8
MODEL
Max output power 4 per channel (Watt)
8 per channel (Watt)
rms at 1 kHzand 0.1 % THD 8 BRIDGE
4 per channel (Watt)
8 per channel (Watt)
rms at 20Hz-20kHz and 0.1 % THD 8 BRIDGE
4 per channel (Watt)
8 per channel (Watt)
1 kHz 20ms Burst 8 BRIDGE
Maximum Input Level
Input Impedance
Input Sensitivity (dBu)
8 Att. max Input sensitivity
S/N Ratio A-weighted
THD+N 1kHz, half power, 4
Frequency Response 1W, 8
Channel Separation 1kHz, half power, 8 Att.
max, input 600 shunt
Controls Front Panel
Rear Panel
Connectors Input
Output
Power
Indicators
Load Protection POWER switch on/off
DC-fault
Amplifier Protection Thermal
Over current
Power Supply Protection Thermal
Limiter Circuit Clip limiting
AC Power Requirement
Power Consumption
Dimensions ( Wx D x H ) Unit ( mm )
Packing ( mm )
Weight ( kg ) Net Weight
Gross Weight
+24dBu
40k (balanced) 20k (unbalanced)
0.775V
95dB
0.5%
20Hz-20kHz +0dB -1.5dB
55dB
POWER switch
MUTE switch (push ON/push OFF) x 8
Attenuator (41positon) x8
MODE switch (STEREO/BRIDGE/PARALLEL) x 4
Euroblock (balanced)/ch
Barrier strip/ch
AC inlet x 1
POWER x 1 (Green), PROTECT x 8 (Red),
CLIP x 8 (Red), SIGNAL x 8 (Green), MUTE x 8 (Red),
PARALLEL x 4 (Orange), BRIDGE x 4 (Orange)
Output mute
Power supply shutdown
Output mute (heatsink temp 80 )
Power supply shutdown
Power supply shutdown (heatsink temp 85 )
Limiting level 100W @8 or 150W@4
~220-240 50/60Hz
800W
483 x 355 x 89
570 x 480 x 165
8
10

Service
This unit has very sophisticated circuitry and should only be serviced by a fully trained
technician.
This is why each unit bears the following label:
To prevent electric shock, do not remove covers. No user serviceable parts inside. Refer
servicing to a qualified technician.
Worldwide Service
Service may be obtained from your local authorized service center. To obtain service, simply
present your sales receipt as proof of purchase along with the defective unit to an authorized
service center. They will handle the necessary paperwork and repair. Remember to transport
your unit in the original factory packaging.
1. When sending a NOVAproduct to the authorized service center for service, be sure to fill out
the service information form that is enclosed at the end of this manual and include it inside
your unit's shipping pack. Do not send the service information form separately.
2. To ensure the safe transportation of your unit to the authorized service center, ship it in an
original factory-packing container.
3. Do not ship the unit in any kind of rack. Ignoring this warning may result in extensive damage
to the unit and the equipment rack. Accessories are not needed. Do not send the instruction
manual, cables and any other hardware.
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DXI8200 8 CHANNEL CLASS-D AMPLIFIER NOVA Products
Service Information Form
Owner's Name:
Shipping address:
Street:
City:
Zip Code:
Country:
Phone Number: Fax Number:
Email:
MODEL: SERIAL:
NUMBER:
Place of Purchase:
Name of Dealer:
Full Address:
DATE OF PURCHASE:
Nature of the problem
(Be sure to describe the conditions that existed when the problem occurred and what
attempts were made to correct it.)
Other equipment in your system
If warranty has expired, payment method: Cash Check Visa Master
card number: Signature:
Enclose this form with the defective unit. Do not mail separately.
WEEE Mark
If you wantto dispose ofthis product, do not mix withgeneral
household waste. Thereare separate collectionsystems for used
electronic products inaccordance with legislationunder the WEEE
Directive (Directive 2002/96/EC)and is effectiveonly within the
European Union.