Classe Audio CA-301 owner manual Connections For Line Or Balanced Inputs

CONNECTIONS FOR LINE OR

BALANCED INPUTS:

The CLASSÉ CA-301 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-301.

Line Inputs

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-301. The balanced connectors are automatically disabled.

Balanced Inputs

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-301

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-301. 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

Aspecial circuit in the Classé CA-301 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 (3/4 amp fast blow), located on the front end voltage regulation board, to protect the input circuitry from damage due to overload.

There is also an AC line fuse, located at the rear of the amplifier immediately above the IEC receptacle.

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.

IF THE PROTECTION CIRCUIT HAS BEEN TRIGGERED, TURN THE CA-301 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-301 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-301 with the SSP-75, Disconnect you CA-301 from the AC line completely, open the top cover and locate the 4 internal jumpers inside the CA-301 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-301 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-301. 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 1 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	ADDRESS RC		Auto
					Button	ON
X	X	X	X	0	Amp 1	No
X	X	X	out	1	Amp 2	No
X	X	out	X	2	Amp 3	No
X	X	out	out	3	Amp 4	No
X	out	X	X	4	Amp 5	No
X	out	X	out	5	Amp 6	No
X	out	out	X	0	Amp 1	No
X	out	out	out	0	Amp 1	Yes

CA-301 FEATURES:

Newly developed special Classé symetrical circuitry from input to output. Current capacity increased above standard units. One massive toroidal transformer totalizing 2 KVA. Over 70000 µF storage capacity for each channel. Ten 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, Québec

Canada H8T 1B3

Telephone: +1 (514) 636-6384

Fax: +1 (514) 636-1428

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