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H C A - 1 2 0 0 II H i g h C u r r e n t P o w e r A m p l i f i e r
Congratulations on your purchase of this precision audio component and thank you for your selection of
Parasound. Your HCA-1200II is designed by John Curl, one of the world's most renowned circuit designers.
It is among the elite of the finest power amplifiers ever made. You have made an outstanding investment in
your musical and home theater pleasure for years to come.
Every part, every direct-coupled circuit, has been painstakingly selected for optimum musical quality on the
finest and most challenging music and loudspeaker loads. Take a look at the special features found near the
end of this manual to fully appreciate its considerable prowess.
THX Certification assures you of total compatibility with Lucasfilm THX® Home Cinema standards. Con-
venient switching permits two operating modes: as a two channel stereo amplifier or a single channel
monoblock amplifier.
The HCA1200II has greater operational flexibility and power than most other power amplifiers you may
have encountered, so please take a few moment to read these instructions thoroughly so you may fully
understand the sophisticated capabilities of your new Parasound power amplifier.
Unpacking
Your HCA-1200II packed in two strong cardboard cartons. Save your cartons and the styrofoam inserts for
future safe transport in case you move or your unit ever requires shipping for repair. Note, the inner white
printed carton is not itself strong enough for safe shipping, so you absolutely must place it into the additional
brown outer "overcarton" before shipment.
The AC cord is packed separately in the carton. This is a specially selected audiophile grade cord and is the
only cord we recommend for use with your HCA-1200II. Please don't lose it.
Before you proceed, find the serial number which is located on the rear panel of your unit and record it here
for future reference or in case of casualty loss or theft:_____________________________.
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Summary of Contents for Parasound HCA-1200II
- Page 1 Congratulations on your purchase of this precision audio component and thank you for your selection of Parasound. Your HCA-1200II is designed by John Curl, one of the world's most renowned circuit designers. It is among the elite of the finest power amplifiers ever made. You have made an outstanding investment in your musical and home theater pleasure for years to come.
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Page 2: Rear Panel
Rear Panel 1. Input jacks 2. Input level controls 3. Mono bridge mode selector switch 4. Channels 1, 2 4 Ω - 8 Ω speaker terminals 5. Main Fuse 6. AC cord connector Front Panel 1. Power Switch 2. Standby-Operation LEDs 3. -
Page 3: Making Connections
Rack Mounting your HCA-1200II Your HCA-1200II can be mounted in a space slightly higher than a 3 unit 19" rack. Make sure you select heavy duty mounting bolts and nuts and use washers under the heads of the bolts to avoid scratching your amplifier's anodized front panel. -
Page 4: Mono Bridge Switch
It can easily cause the terminal shaft to shear off, as it is relatively weak in this one area due to the large diameter of the opening for accomodating heavier gauge wires. We recommmd banana plugs for con- venience. The HCA-1200II Limited Warranty does not cover terminals which have been sheared after twist- ing by spade lugs. - Page 5 In many cases, this will eliminate the problem. lf this fails, it may be necessary to reverse the direction of the HCA-1200II's AC plug. Please do not cut off its 3rd ground pin; you may need it again if you change components. The preferable way is to purchase the "cheater""...
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Page 6: Power Switch
In virtually all imaginable listening situations, these LEDs will rarely illuminate. Level Controls Each channel has a separate input level control. When your HCA-1200II is used in a THX installation, each level control must be set at its maximum, which corresponds to THX reference Ievel. -
Page 7: In Case Of Trouble
However, if the same channel is at fault when you reverse the Left and Right channel pair cables to your HCA-1200II (turn it off before moving wires), it may indicate trouble within the power amplifier itself. We suggest you contact your authorized Parasound Dealer or Installer, or call Parasound Technical Service if you suspect a problem. - Page 8 Parasound HCA-1200II Specifications Continuous Power Output - Stereo 205 watts RMS x 2, 20Hz-20kHz, 8 Ω, both channels driven 315 watts RMS x 2, 20Hz-20kHz, 4 Ω, both channels driven Continuous Power Output - Mono 625 watts RMS, 20Hz-201kHz, 8 Ω...
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Page 9: Special Features
Special Features • THX certified by Lucasfilm Ltd. • Massive 1kVA power transformer • 60,000µF computer-grade capacitors in power supply • Multiple polystyrene film bypass capacitors in power supply • Cascode Class A input stages with matched J-FET pairs • Hand picked MOSFETs in high voltage driver stage •... - Page 10 About the Designer of your HCA-1200II We created your Parasound HCA-1200II to be among the finest amplifiers ever made for the reproduction of music. To build a world class amplifier, we turned to world class designer, John Curl. John is considered one of the most respected designers of our time.
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Page 11: Parasound Limited Warranty (Usa Only)
Your Parasound HCA-1200II is covered by a limited warranty against defects in materials and workmanship for a period of two years from date of purchase. This warranty is provided by the Parasound dealer where the unit was purchased. Warranty repair will be performed only when your purchase receipt is presented to validate your ownership, date of purchase and authorized status of the selling dealer. - Page 12 Ventilation Guidelines for Parasound Power Amplifiers Your Parasound power amplifier is designed to operate with high idling, or bias, current to reduce higher- order harmonic distortion. This bias optimization is characteristic of all Parasound power amplifiers and is perfectly normal, but it results in noticeably warmer operation even when no signal is present. While many other amplifiers manufacturers have chosen to bias their amplifiers at a lower level to run cooler, we bias our amplifiers so the output transistors are allowed to operate in a much more linear region.
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