crown I-Tech HD User Guide
PRELIMINARY
I-Tech HD™ Quick-Start Guide
Welcome! Operating your I-Tech amplifi er
can be as simple or advanced as you wish.
Right out of the box, it works like any other
amplifi er with stereo loudspeaker loads.
•Dual and bridge-mono operating instructions are on the
opposite side of this sheet.
• When using an equipment rack, mount units directly on top
of each other. Close any open spaces in rack with blank
panels. DO NOT block front or rear air vents. The side walls of
the rack should be a minimum of two inches (5.1 cm) away
from the amplifi er sides, and the back of the rack should be a
minimum of four inches (10.2 cm) from the amplifi er back
panel.
• If you want to control and monitor the amplifi er with
Harman’s System Architect®, please follow the information
included with System Architect. If you want to load DSP
presets or perform diagnostics using the amplifi er’s LCD
control screen, see Section 4.2 in the operation manual.
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
Telephone:
574.294.8200
800.342.6939 (North America,
Puerto Rico, and Virgin Islands only)
Facsimile:
574.294.8301 (Technical Support)
574.294.8124 (Factory Service)
Internet:
http://www.crownaudio.com
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus 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
reg isters, stoves, or other apparatus (including amplifi ers)
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 is provided for your safety. If the provided
plug does not fi t into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched,
par ticularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specifi ed by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specifi ed
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 qualifi ed 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 nor mally, or has been dropped.
15. Use the mains plug to disconnect the apparatus from the
mains.
16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE.
17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR
SPLASHING AND ENSURE THAT NO OBJECTS FILLED
WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON THE
EQUIPMENT.
18. THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL
REMAIN READILY OPERABLE.
Ensure Proper Cooling
When using an equipment rack, mount units directly on top of
each other. Close any open spaces in rack with blank panels.
DO NOT block front or rear air vents. The side walls of the rack
should be a minimum of two inches (5.1 cm) away from the
amplifi er sides, and the back of the rack should be a minimum
of four inches (10.2 cm) from the amplifi er back panel.
The fi gure to the right illustrates standard amplifi er airfl ow.
Please read this before you start:
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR
BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES
COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE
À L’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR
PERSONNEL QUALIFIÉ SEULMENT.
PARA PREVENIR UN CHOQUE ELÉCTRICO, NO RETIRE LAS
CUBIERTAS SUPERIOR O INFERIOR. NO EXISTEN PARTES QUE
PUEDAN SER REPARADAS POR EL USUARIO AL INTE RIOR.
REMITA EL SERVICICO AL PERSONAL TÉCHNICAL CALIFICADO.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE
AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG
FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER
SUPPLY CORD SHALL REMAIN READILY OPERABLE.
POUR DÉMONTER COMPLÈTEMENT L’ÉQUIPEMENT DE
L’ALIMENTATION GÉNÉRALE, DÉMONTER LE CÂBLE D’ALIMENTATION DE SON RÉCEPTACLE. LA PRISE D’ALIMEN TATION
RESTERA AISÉMENT FONCTIONNELLE.
PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL
SUMINSTRO ELECTRICO, DESCONECTE EL CABLE DE ALIMENTACION DE LA TOMA DE CA. LAS PATAS DEL CONEC TOR
DEL CABLE DE ALIMENTACIÓN DEBERAN MANTENERSE EN
BUEN ESTADO.
WATCH FOR THESE SYMBOLS:
The lightning bolt triangle is used to alert the user to the risk of
electric shock.
The exclamation point triangle is used to alert the user to
important operating or maintenance instructions.
The I-Tech Series amplifi ers are certifi ed only
at 120V in Canada.
IMPORTANT
I-Tech Series amplifi ers require Class 2 output wiring.
Les amplifi cateurs de série de I-Tech exigent des câbles de sortie de
classe 2.
I-Tech-Reihe-Verstärker verlangen Klasse die 2 Produktionsverdrahtung.
Los amplifi cadores de la Serie I-Tech requieren de un cableado de
sal ida Clase 2.
MAGNETIC FIELD
CAUTION! Do not locate sensitive high-gain equipment such as preamplifi ers directly above or below the unit. Because this amplifi er has a
high power density, it has a strong magnetic fi eld which can induce hum
into unshielded devices that are located nearby. The fi eld is strongest
just above and below the unit.
If an equipment rack is used, we recommend locating the amplifi ers)
in the bottom of the rack and the preamplifi er or other sensitive equipment at the top.
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 modifi cations not expressly approved by the party responsible for
complicance could void the user’s authority to operate the euqipment.
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 different from that to which the
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
WARNING: The third prong of the AC power connector
(ground) is an important safety feature. Do not attempt
to disable this ground connection by using an adapter or
other methods.
(over)
Stereo Wiring
Let’s assume that you unpacked and installed your amplifi er with the proper cooling. If
not, see Section 2 in the manual. We’ll also assume that you will operate the amplifi er in
stereo. If you want to operate your amplifi er in bridge-mono, see the section below.
1. IMPORTANT: Make sure that the amplifi er is off. Unplug its power cord
from the AC outlet.
From mixer Ch.1 and Ch. 2
From mixer Ch.1 and Ch. 2
From mixer Ch.1 and Ch. 2
From mixer Ch.1 and Ch. 2
To Ch. 1 speaker
+
To Ch. 1 speaker
To Ch. 1 speaker
_
To Ch. 1 speaker
2. See Figure 1. Connect two cables from your mixer output to the amplifi er’s XLR input
con nectors.
3. Using Class 2 wiring, connect speaker cables either to the amplifi er’s Speakon
connectors (as in Figure 2) or to the binding posts (as in Figure 1.)
4. Turn down your mixer master faders. Plug the power cord into the amplifi er and then
into a grounded AC outlet. The amplifi er must be plugged into a grounded AC
outlet. Turn on the front-panel power switch. The LCD Control Screen will light up
(Figure 3).
5. Turn both Encoder knobs fully down (CCW) until the minimum dB gain is displayed.
6. Play a program through your mixer. Set its level to peak at 0 dB or 0 VU maximum on
the mixer meters. Gradually turn up (CW) the amplifi er Encoder knobs (Level controls) to
the desired volume.
7. If the SPL is too high, press Menu/Exit, then press Next until you see ADVANCED
MENU. Push an Encoder knob. Press Next until you see MAXIMUM ANA LOG INPUT.
Press an Encoder knob so the display reads 21 dBu. Press Menu/Exit twice. Press Next.
CH1 Sensitivity will be displayed. Gradually turn up (CW) the Encoder knobs to the
desired volume. Press Exit when done.
Warning: Only connect to networks that remain inside the building.
CAUTION – SHOCK
HAZ ARD: Potentially
lethal voltages exist at
the output connectors
when the amplifi er is
turned on and is passing
a signal.
®
Figure 1 Rear-panel Connections for Stereo Wiring
Figure 2
Wiring Two Speakers to Two
Speakons for Stereo Operation
Channel 1
Loudspeaker
Bottom
Speakon
(Channel 2)
_
To Ch. 2 speaker
To Ch. 2 speaker
To Ch. 2 speaker
+
To Ch. 2 speaker
Top Speakon
(Channel 1)
Channel 2
Loudspeaker
Bridge-Mono Wiring
Let’s assume that you unpacked and installed your amplifi er with the proper cooling. If not,
see Section 2 in this manual. We’ll also assume that you will operate the amplifi er in
Bridge-Mono. Basically you will turn on the amp, enable Bridge-Mono mode with the LCD
Control Screen, turn off the amp, wire it, and turn it back on.
1. Be sure that no cables are connected to the amplifi er. Plug the amplifi er power cord into
the amplifi er, then into an AC outlet.
2. Turn on the amplifi er power switch on the front panel. The LCD Control Screen will light
up (Figure 3).
3. Under the LCD Control Screen, press the Menu/Exit button. Press the Next button
until you see Amp Mode on the screen.
From mixer Ch.1
From mixer Ch.1
From mixer Ch.1
From mixer Ch.1
Figure 3
_
To speaker
To speaker
To speaker
+
To speaker
4. Turn an Encoder knob until you see Bridge Mono. Press the knob. You will be prompted
to confi rm your choice. Press the Menu/Exit button.
5. IMPORTANT: Make sure that the amplifi er is off. Unplug its power cord
from the AC out let.
6. See Figure 4. Connect a cable from your mixer output to the amplifi er’s Channel-1 XLR
input connector.
7. Using Class 2 wiring, connect the speaker cable either to the amplifi er’s top Speakon
connector (terminals 1+ and 2+, Figure 5) or across the red binding posts of both channels
(Figure 4). Do not use the black binding posts in bridge-mono mode.
8. Turn down your mixer master faders. Plug the power cord into the amplifi er and then
into a grounded AC outlet. The amplifi er must be plugged into a grounded AC
outlet. Turn on the front-panel power switch. The LCD Control Screen will light up
(Figure 3).
9. Turn down both Encoder knobs (Level controls) all the way.
10. Play a program through your mixer. Set its level to peak at 0 dB or 0 VU maximum on
the mixer meters. Gradually turn up (CW) the Encoder knobs to the desired volume.
Note: If the SPL is too high, see Step 7 under Stereo Wiring. Warning: Only connect to
networks that remain inside the building.
CAUTION – SHOCK HAZ ARD:
Potentially lethal voltages exist at the
output connectors when the amplifi er
is turned on and is passing a signal.
(over)
Figure 4 Rear Panel Connections
for Bridge-Mono Wiring
Figure 5 Wiring a Speaker to the T op Speakon
Connector for Bridge-Mono Operation
141301-1 12/08
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