CLASSE CA-401 Bedienungsanleitung Seite 5

CONNECTIONS FOR LINE OR
BALANCED INPUTS
The CLASSÉ CA-401 power amplifier is equipped
with both line and balanced inputs. Either one
may be used SEPARATELY, BUT NOT
SIMULTANEOUSLY. The balanced inputs must be
connected to a pre-amplifier which has balanced
main outputs. Balanced inter-connects with
"XLR" connectors are also required. Regardless
of the amplifier inputs used, stereo or mono
operation is possible on the CA-401.
Line Input
Engage the LINE/BALANCED switch to the
position marked "LINE". (The amplifier is factory
set for "LINE".)
NOTE: The LINE/ BALANCED switch will
not operate if the amplifier is turned on, you
will NOT be able to change from one mode to
the other, as the mode is "locked" while the
amplifier is on. To activate the circuit, turn off
the unit and engage the LINE/BALANCED switch
to LINE. If the unit has not been turned off
before engaging the switch, turn
off the unit, wait for about 10 seconds, and
turn the unit on again, the circuit will then
engage. Connect the line interconnects
to the RCA input jacks on the rear panels of
the CA-401. The balanced connectors are
automatically disabled.
Balanced Input
Switch the LINE/BALANCED switch to the
position marked "BALANCED". A balanced
preamplifier and balanced interconnects are
also required.
NOTE: The LINE/ BALANCED switch will
not operate if the amplifier is turned on, you
will NOT be able to change from one mode to
the other, as the mode is "locked" while the
amplifier is on. If the unit has not been turned
off before engaging the switch, turn off the unit,
wait for about 10 seconds, and turn the unit on
again, the circuit will then engage. For use with
balanced preamplifiers other than Classé, the
wiring of the 3-pin XLR connectors must be
matched to that of the CLASSÉ CA-401 which
are wired as follows:
• PIN 1: GROUND
• PIN 2: POSITIVE (NON-INVERTED)
SIGNAL, "HOT"
• PIN 3: NEGATIVE (INVERTED) SIGNAL
All Classé preamplifiers and amplifiers are
configured as above. Some preamplifiers from
other manufacturers have PIN-3 set as the
positive or "HOT" side. If this is true of your
preamplifier, and you wish to maintain absolute
phase throughout your system, the interconnects
must have the wire which is connected to PIN-3
at the preamplifier output end switched to PIN-2
at the amplifier input end and the wire which is
connected to PIN-2 at the preamplifier output
switched to PIN-3 at the amplifier input end.
Having confirmed the correct connections, plug
the XLR connectors of the balanced interconnects
into the locking XLR connectors on the rear panel
of the CA-401. Push the connectors in until
the locking mechanism clicks. (To remove the
connectors, press the tab above the connector
while pulling gently on the connector body.)
Protection Circuit
A special circuit in the Classé CA-401
continuously monitors the output audio signal to
detect output overload, clipping or DC content.
In addition, each channel has two front end
supply voltage fuses, located on the front end
voltage regulation board (the front of the top
board located at the back of the unit), to protect
the input circuitry from damage due to overload.
There is a green LED for the negative voltage
supply and a red for the positive. If a fuse fails,
the corresponding LED goes out, alerting you of
the fact. (These fuses are 3 / amp fast blow).
4
There is also an AC line fuse, located at the rear
of the amplifier immediately above the IEC
receptacle. There is no LED monitoring the
condition of this fuse.
If the protection circuit of the unit is triggered
or any of the protection fuses has blown, the
FRONT PANEL POWER LED will go to BLINKING
GREEN regardless if the unit is used in mono
or stereo.
IF THE PROTECTION CIRCUIT HAS BEEN
TRIGGERED, TURN THE CA-401 OFF. After the
situation which has triggered the protection
circuit has been clearly identified and corrected,
attempt to re-start the unit. IF THE UNIT STILL
GOES INTO PROTECTION MODE, OR IF IT
APPEARS THAT PROTECTION FUSES DID BLOW,
CONTACT YOUR LOCAL DEALER. DO NOT TRY
TO CHANGE A BLOWN FUSE. REPLACING A
FUSE WITHOUT CHECKING FOR COMPONENT
FAILURE COULD RESULT IN FURTHER, SERIOUS
DAMAGE TO VITAL COMPONENTS IN YOUR
AMPLIFIER. CONTACT YOUR LOCAL DEALER
or Customer Service at the Classé Audio, Inc
+1 (514) 636 63 84.
IR Out and In
The CA-401 may also be turned on and off using
our SSP-75 Surround Sound Processor, utilising
the IR OUT and IN jacks. To turn on your CA-401
with the SSP-75, Disconnect you CA-401 from
the AC line completely, open the top cover and
locate the 4 internal jumpers inside the CA-401
located to the right side of the regulator board
(top board located at the back of the unit).
When facing the amplifier from the front, remove
the jumper located completely at the back (the
last in the row) and save this jumper. Re-install
the top cover. Install a mini jack into IR IN at the
back of the CA-401 and plug the other end of
the mini jack into the 5VDC mini jack at the back
of your SSP-75. When the Standby button of the
SSP-75 is pressed, it will now activate the turn
on turn off circuitry of your CA-401. Several
amplifiers may be turned on automatically in
sequence or all at once, depending upon the
configuration of the jumper settings in the
amplifier. The table in Fig 2 tells you which
jumper should be inserted or removed to obtain
the correct sequence on which you will want
your amplifier to turn on.
J3 J2 J1 J0 ADRESS
X X X X 0
X X X out 1
X X out X 2
X X out out 3
X out X X 4
X out X out 5
X out out X 0
X out out out 0
CA-401 FEATURES
Newly developed special Classé symetrical
circuitry from input to output. Current capacity
increased above standard units. One massive
toroidal transformer totalizing 3 KVA. Over
85000 µF storage capacity for each channel.
Twelve high current/voltage Bi-Polar devices per
channel.Discrete high voltage/current regulation
for the pre-driver and input sections. Metalized
polypropylene capacitors bypassing each output
device. Heavily gold plated bars connecting all
supplies for the ouput devices. Heavily gold
plated input and output connectors. All signal
carrying cables are shielded and have Litz
type configuration. All other wiring is oxygen
free copper.
Notice to all Classé Product owners:
Thank you for your purchase of a Classé Audio
component.
All of us at Classé have taken extreme care to
ensure that your purchase will become a prized
investment. We are proud to inform you that all
Classé Audio components have been officially
approved for the European Community CE mark.
This means that your Classé product has been
subjected to the most rigorous manufacturing
and safety tests in the world, and have proven to
meet or exceed all European Community CE
requirements for unit to unit consistency and
consumer safety.
All of us at Classé Audio wish you many years of
musical enjoyment.
As of July 18, 1996, Classé Audio has been
granted Certificate No: C401CLA1.MGS, which
indicates CE approval for all models of the Classé
Audio product line.
CLASSÉ AUDIO
5070 François Cusson
Lachine, Quebec
Canada H8T 1B3
Telephone: + 1 (514) 636-6384
Fax: +1 (514) 636-1428
2
RC Auto
Button ON
Amp 1 No
Amp 2 No
Amp 3 No
Amp 4 No
Amp 5 No
Amp 6 No
Amp 1 No
Amp 1 Yes