TGA-7401-230
TGA-7401 / TGA-7401-230
and TGA-7201 / TGA-7201-230
seven
Theater Grand Amplifier
User's Manual
SAFETY
Important Safety Instructions
1. Read 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 dry cloth.
7. Do not install near any heat sourc-
es such as radiators, heat registers,
stoves, or other apparatus (including
ampliers) that produce heat.
8. Unplug this apparatus during lightning storms or when unused for long
periods of time.
9. Refer all servicing to qualied ser-
vice personnel. Servicing is required
when the apparatus has been damaged in any way, such as a powersupply 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.
10. Ventilation — The apparatus
should be situated so that its location
or position does not interfere with its
proper ventilation. For example, the
apparatus should not be situated on a
bed, sofa, rug, or similar surface that
may block any ventilation openings; or
placed in a built-in installation such as
a bookcase, cabinet, or closed equip-
ment rack that may impede the ow of
air through ventilation openings.
11. Power Sources — The apparatus
should be connected to a power supply only of the type described in these
operation instructions or as marked on
the apparatus.
12. Power Cord Protection — Power-supply cords should be routed so
that they are not likely to be walked
upon or pinched by items placed upon
or against them, paying particular attention to cords at plugs, convenience
receptacles, and the point where they
exit the apparatus.
13. Non-use Periods—The power
cord of the apparatus should be unplugged from the outlet when unused
for a long period of time.
14. Object and Liquid Entry — Care
should be taken so that objects do not
fall into and liquids are not spilled into
the inside of the apparatus.
15. Servicing — The user should
not attempt to service the apparatus
beyond those means described in this
operating manual. All other servicing
should be referred to qualied service
personnel.
2
User's Manual
SAFETY
16. To prevent electric shock, do not
use this polarized plug with an extension cord, receptacle or other outlet
unless the blades can be fully inserted
to prevent blade exposure.
Pour préevenir les chocs électriques
ne pas utiliser cette che polariseé
avec un prolongateur, un prise de
courant ou une autre sortie de courant, sauf si les lames peuvent être
insérées à fond sans laisser aucune
parIIIe à découvert.
WARNING – TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE
ATTENTION: POUR
DUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE
CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU’AU FOND.
17. Grounding or Polarization —
Precautions should be taken so that
the grounding or polarization means
of the Component is not defeated.
This apparatus does not exceed the
Class A/Class B (whichever is ap-
plicable) limits for radio noise emissions
from digital apparatus as set out in the
radio interference regulations of the Canadian Department of Communications.
OF PLUG TO WIDE SLOT, FULLY INSERT.
ÉVITER LES CHOCS ÉLECTRIQUES, INTRO-
ATTENTION — Le présent appareil numérique n'émet pas de bruits
radioélectriques dépassant las limites
applicables aux appareils numériques
de class A/de class B (selon le cas)
prescrites dans le règlement sur le
brouillage radioélectrique édicté par
les ministere des communications du
Canada.
Contents
Safety Instructions ................................... 2-3
Chapter 1: Introduction ...............................4
Theater Grand Amplier Editions ................5
Unpacking and Installation .........................6
Front Panel Features ..................................7
Rear Panel Features ..................................8
Chapter 2: System Congurations ...........10
Appendix:
Series and Parallel ...................................15
Troubleshooting Guide .............................16
Specications ...........................................18
Limited Warranty ......................................19
Service Assistance ...................................19
Please read the Safety Instructions
carefully before connecting and
using your Sunre Amplier.
Chapter 1 is a general introduction
to the features, details and installa-
tion of your amplier.
Chapter 2 shows some typical con-
nections to a preamplier and
speakers.
The Appendix shows some addition-
al information, including a troubleshooting guide, the Warranty, and
service assistance details.
To nd out more about this and other
Sunre products, please visit our
website: www.sunre.com
3
User's Manual
CHAPTER 1
Introduction
Thank you for purchasing a Sunre Theater Grand Amplier. We hope you enjoy it and the music it
makes as much as we have enjoyed creating it for you.
The TGA-7401 can produce 400 watts rms per channel into 8 ohms and 800 watts rms into
4 ohms.
The TGA-7201 can produce 200 watts rms per channel into 8 ohms, and 400 watts rms into
4 ohms.
The big breakthrough is the uncanny tracking downconverter, which uses 18 Herculean Mosfets
in the TGA-7401 and the TGA-7201. This allows the amplier to produce phenominal power output,
without the heat generated by conventional designs.
The circuit boards are heavy glass epoxy, double sided, with a Faraday shield on the back side. All
resistors in the signal path are 1% tolerance, metal-lm. Critical capacitors are lm devices with high
dielectric strength and ultra low absorption characteristics. An enormous power source built around a
massive power transformer provides the ultimate muscle for limitless dynamics.
We could go on and on, but here’s the best part: we’ve included two kinds of outputs on the front
left and front right channels:
(1) a standard voltage-source (i.e., near zero impedance) output for all typical applications and:
(2) a higher-impedance current-source output, which many prefer for electrostatic, planar mag-
netic, or ribbon speakers, such as our Cinema Ribbon line. Or you can biwire your system with
the voltage source driving the woofer(s) and the current source driving the upper part of the
system. In many cases this provides by far the best possible interface between the amplier
and the speaker system.
Whichever way you decide to hook up the amplier, it will create a multilayered soundstage that is
deep, wide, three-dimensional, and utterly believable. The optional current-source output can coax
forth a sensuous, delicately detailed musical voice long associated with low-powered classic tube
ampliers. (The current-source characteristic of vacuum tubes is the dominant factor in the sound-
stage delivery of classic tube ampliers).
4
User's Manual
Theater Grand Amplier Editions
CHAPTER 1
The Theater Grand seven chan-
nel power amplier is available in two
editions:
• TGA-7401
• TGA-7201
The TGA-7401 has twice the power
output of the TGA-7201.
This manual uses illustrations of the
TGA-7401. The operational details,
features, and connections to loud-
speakers and preampliers are the
same for both models.
The TGA-7401-230 and TGA-7201230 are export models, set for 220240 VAC operation. Their operation
is identical to the TGA-7401 and the
TGA-7201 ampliers.
TGA-7401 and TGA-7401-230
400 Watts per channel into 8 Ω
800 Watts per channel into 4 Ω
TGA-7201 and TGA-7201-230
200 Watts per channel into 8 Ω
400 Watts per channel into 4 Ω
5
User's Manual
CHAPTER 1
Unpacking
Your Sunre Amplier should reach
you in perfect condition. If you do
notice any shipping damage, please
contact your Sunre Dealer immediately.
Gently lift out the unit and remove
all the packing material and accessories. It is important to save all the
packing materials and the box in case
your amplier ever needs to be moved
or shipped for repair.
Make sure that you keep your sales
receipt. It is the only way to establish
the duration of your Limited Warranty
and it may come in useful for insurance purposes.
Please take a moment to ll out and
mail the Sunre Customer Response
card. Also read the serial number
located on the rear panel or the underside of the chassis and record it here:
Serial #:
___________________________
Purchased at:
___________________________
___________________________
___________________________
___________________________
Date: _______________________
Installation
Read and follow all safety instruc-
tions shown on pages 2 and 3.
Observe the following precautions
when choosing a location for your
Theater Grand Amplier:
• Protect it from prolonged
exposure to direct sunlight and
other direct sources of heat,
such as heating vents and
radiators.
• Do not expose the unit to rain
or moisture. If uid or a foreign
object should enter the unit,
immediately unplug the power
cord and contact your Sunre
Dealer.
• Avoid excessive exposure to
extreme cold or dust.
• Do not place heavy objects on
top of the unit.
• Allow adequate ventilation
around the amplier; do not
cover the ventilation slots.
AC Power Considerations
Ensure that the unit is plugged into
an outlet capable of supplying the cor-
rect voltage specied for your model.
The outlet should be capable of supplying 15 amps for the 120 V model,
8 amps for the 230 V model.
Care
If you need to clean the front sur-
face, rst turn off the power and then
use a dry soft cloth, rubbing with the
grain.
• Make sure that the power
cords of all your components
are attached to the same outlet
or at least to the same circuit.
This will reduce the possibility
of a ground loop in the system.
Make sure that the total current draw does not exceed
the current rating of your AC
outlet or power strip.
Use the XLR inputs if your
•
preamplier has XLR outputs.
These balanced connections
provide superior noise rejection.
• Whenever possible, keep the
power cords away from the
signal cables or speaker wires
to prevent any hum or audio
interference being heard in the
speakers.
• Choose reliable hookup cables,
also called patch cords or RCA
cables. They should be fully
shielded and as short as possible for the job.
• Some patch cords can be a
very tight t and there is usually a preferred method of getting them off. Some have to be
removed with a twisting action.
Be gentle or you may damage
the jacks of the amplier or
your other components.
• Some special patch cords
can only be hooked up in one
direction, these are usually
marked with arrows.
6
Connection Tips
Before setting up your new system,
please consider the following :
Always make sure that
your components are all
unplugged before making or
changing connections.
• It is usual for the right patch
cord plugs to be red and the
left connections to be white,
grey or black. Video connections are usually yellow.
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