Classe Audio Omicron Stereo Owners manual
OMICRON ISSUE 2 DEC ‘98
CLASSÉ AUDIO
OMICRON
POWER AMPLIFIER
OMICRON
OWNER'S MANUAL
OMICRON ISSUE 2 DEC ‘98
2
CLASSÉ DESIGN PHILOSOPHY
1. REPEATED LISTENING DESIGN SESSIONS:
Fine tuning of sound by exchanging and mixing of parts (transistors, capacitors, wiring, PCB
boards etc.), and adjusting many specific operating voltages within proper engineering ranges,
producing an overall sonic recipe giving the most natural harmonic realism of music typical of
instruments in a live performance.
2. CIRCUIT DESIGN:
The OMICRON is based on Classé’s whole history of designing and building High End
amplifiers.The OMICRON is an Ultra- High performance amplifier of incredible sonic realism
capable of transmitting to the listener the emotional essence of the music. The OMICRON is
actually two completely separate amplifiers with two massive toroidal transformers totalling 3.6
KVA, each with their own power cords and a huge storage capacity which totals over 80000 uF
per channel. The OMICRON has fourteen high voltage/current Bi-Polar output devices per
channel. Discrete high voltage/current voltage regulation for the pre-driver and input sections.
Also featured are heavily gold plated bars connecting supplies of the output devices. Gold plated
input and output connectors. Oxygen free copper wiring. All signal carrying cables are shielded
and have Litz type configuration. The OMICRON is symmetrical from input to output
3. EXTREME LONG LIFE IN REAL WORLD CONDITIONS:
Choosing the best attainable quality parts and materials combined with the advantages of the two
above-mentioned areas provides Classé owners with years of proven trouble free reliability and
musical enjoyment.
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OMICRON ISSUE 2 DEC ‘98
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OMICRON
OWNER'S MANUAL
TABLE OF CONTENTS
UNPACKING & SET-UP.......................................................................... 4
GENERAL CONNECTIONS..................................................................... 5
CONNECTIONS FOR REGULAR AND BALANCED INPUTS…….... 8
PROTECTION CIRCUIT.....................................................….….…….... 10
IR IN AND OUT………………………………………………………… 11
SPECIFICATIONS.................................................…..........….………..... 14
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OMICRON ISSUE 2 DEC ‘98
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UNPACKING & SET-UP
Your CLASSÉ OMICRON power amplifier is packed in high density, semi-rigid foam
placed in a special Fiberglas case. To remove the unit, put the fibreglass case with the Classé
lettering right side up. Unlock the four (4) case locking devices by first lifting the tabs, and turning
them fully counter clockwise. Then, pull the tabs; the locking devices will pivot downwards. You
can now remove the large top portion of the case. Take the unit out of the base of the case and
remove the plastic bag and inspect the unit for any concealed damage. Apart from the owner's
manual, please ensure the following has also been included:
1) Two (2) detachable A.C. linecord
2) Nut driver for output connectors
Please report any damage or missing parts to your dealer immediately.
Place the OMICRON at or near its final set-up position, allowing 8 inches at the rear for
tightening the speaker output connectors.
The power transformers in the OMICRON are located at the front-center of the unit.
Ideally, a few feet should separate this area from components which potentially could pick up hum.
These include preamplifiers, turntables, and interconnect cables. In terms of providing adequate
airspace for cooling, a good rule of thumb is to allow 6 inches above and 3 inches on each side of the
unit.
Check the Serial Number sticker on the back of the unit for the correct operating voltage.
The OMICRON has two external AC fuses, the rating of which should be as follows:
LINE VOLTAGE FUSE RATING
100 or 120 V.A.C. 2X 15 AMP SLOW BLOW, 125 or 250 volts
220 or 240 V.A.C 2X 12 AMP SLOW BLOW, 250 volts
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OMICRON ISSUE 2 DEC ‘98
5
GENERAL CONNECTIONS
A.C. LINE
Insert the 2 linecords into the A.C. receptacle on the rear of the unit. PLEASE MAKE
SURE YOU HAVE PREVIOUSLY HOOKED UP THE SPEAKERS AND PREAMPLIFIER
TO YOUR AMPLIFIER BEFORE CONNECTING THE AC POWER CORD TO THE
AMPLIFIER.
IMPORTANT NOTE
CAUTION: SAFETY INSTRUCTIONS
DISCONNECT THE 2 AC LINE CABLES BEFORE MAKING ANY OTHER
CONNECTIONS. "FLOATING THE GROUND” OR DEFEATING THE GROUND ON A
3-PRONG LINECORD MAY CREATE A SHOCK HAZARD. CONNECT ALL INTERCONNECT CABLES BETWEEN THE ELECTRONICS BEFORE CONNECTING THE A.C.
LINECORDS TO THE WALL OUTLETS. THIS WILL REDUCE THE POTENTIAL SHOCK
HAZARD.
STEREO
Input and output connectors are clearly marked on the back of the amplifier. Left/Right
connections are oriented from the front of the unit. Stereo output connections are marked above the
connectors. Switch stereo/mono switch to STEREO position. (The OMICRON is preset at the
factory for STEREO.)
Use only high quality interconnect and loudspeaker cables, and make all connections tight. If
the RCA input plugs are loose, remove them and pinch down the ground leaves slightly with pliers.
Observe correct phasing of the loudspeaker connections, and tighten.
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