Classe Audio CAV-500 owner manual Regular Inputs, Balanced Inputs, Protection circuit, Auto Button

Regular Inputs

The CAV-500 amplifier is factory set for “REGULAR” You will notice that there are shorting jumpers installed between PIN 1 (ground) and PIN 3 (negative) of each of the balanced input connections at the back of the unit. This automatically disables the BALANCED connections and activates the REGULAR (single-ended) inputs.

Balanced Inputs

To enable the BALANCED connections, simply remove the jumpers between PIN 1 (ground) and PIN 3 (negative) on the XLR connector, this will automatically enable the BALANCED INPUT connection. For use with balanced preamplifiers other than Classé, the wiring of the 3-pin XLR connectors must be matched to that of the CLASSÉ CAV-500 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 noted in the previous page. 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 CAV-500. 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

The Classé CAV-500 is equipped with mosfet fuses (3/4 amp fast blow) to protect the mosfets, which are used as pre-drivers for the output stage of the amplifier. The mosfet fuses are located in front of the top main regulator board at the back of the unit. In the event that a short circuit or other problems would occur at the output of the amplifier, one or more of these fuses may blow in an attempt to protect the amplifier. In addition to the fuses, the unit has a circuit for the detection of unusual distortion characteristics and/or DC content in the incoming audio signal. There is also an AC line fuse protecting the unit. It is located at the back of the unit immediately below the AC receptacle.

If the protection circuit of the unit is triggered or any of the fuses has blown, the FRONT PANEL POWER LED will go to BLINKING GREEN, indicating a “fault” condition.

IF THE PROTECTION CIRCUIT HAS BEEN							CLASSÉ AUDIO
TRIGGERED, TURN THE CAV-500 OFF. .After the							5070 François Cusson
situation which has triggered the protection							Lachine, Quebec
circuit has been clearly identified and corrected,							Canada H8T 1B3
attempt to re-start the unit. IF THE UNIT STILL
GOES INTO PROTECTION MODE, OR IF IT							Telephone: +1 (514) 636-6384
APPEARS THAT PROTECTION FUSES DID BLOW,							Fax: +1 (514) 636-1428
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) 636-6384.
J3	J2	J1	J0	ADRESS	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

CAV-500 FEATURES:

Newly developed special Classé “UHC TRANSFER” power supply section. Current capacity increased above standard units. Magnetic flux controlled transformer cover. All new Classé PCB circuit boards with “UHC TRANSFER” characteristics. Reduction of wiring and connections up to 70%. True differential amplifier circuits from input to output. Both regular and balanced operation. 1/2" thick brushed Soft Shadow Silver faceplate with Satin Black pillars at both ends.

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.

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