Crown Audio PT 1.1 specification

PT 1.1

Indicators

Enable: This red indicator shows the on/off status of the low voltage power supply.

Signal/IOC: Each channel has a two color indi- cator that ﬂashes green to show signal pres- ence and yellow if the ampliﬁer causes distor- tion of 0.05% or more.

Input/Output

Input Connector: Balanced 1/4-inch phone jacks and XLR connectors in parallel.

Input Impedance: Nominally 20 K ohms, bal- anced; 10 K ohms, unbalanced.

Output Connector: Two sets of color-coded binding posts.

Output Impedance: Less than 10 milliohms in series with less than 2 microhenries.

DC Output Offset: Less than 10 millivolts.

Output Signal

Stereo: Unbalanced, two-channel.

Bridge-Mono:Balanced, single-channel. Chan- nel 1 controls are active; Channel 2 controls should be turned down and not used.

Parallel-Mono:Unbalanced, single-channel. Channel 1 controls are active; Channel 2 con- trols should be turned down and not used.

Protection

Power-Tech .1 Series ampliﬁers are protected against shorted, open or mismatched loads; overloaded power supplies; excessive tempera- ture; chain destruction phenomena; input over- load and high-frequency blowups. They also protect loudspeakers from input and output DC, as well as providing protection from turn-on/ turn-off transients.

If operating conditions are unreasonable, the patented ODEP circuitry proportionally limits the drive level to protect the output transistors, particularly in the case of elevated temperature. A thermal switch imbedded in the transformer protects the power supplies from overload. In the rare event that a transformer overheats, the thermal switch removes power, waits until the unit has cooled to a safe temperature and then resets itself.

Turn On: Four-second delay with no dangerous transients. Contact us if you need to change the delay.

Construction

Durable black ﬁnish on steel chassis with spe- cial “ﬂow-through” ventilation from front to side panels.

Cooling: Internal heat sinks with forced-air cooling for rapid, uniform heat dissipation.

Dimensions: Standard 19-inch (48.3-cm) rack mount width (EIA RS-310-B), 3.5-inch (8.9-cm) height and 16-inch (40.6-cm) depth behind the mounting surface.

Approximate Weight: Center of gravity is 6 inches (15.2 cm) behind front mounting sur- face.

120 VAC, 60 Hz Units: 30 pounds (13.6 kg) net; 34 pounds (15.4 kg) shipping weight.

International Units: 31 pounds, 2 ounces (14.1 kg) net; 34 pounds, 9 ounces (15.7 kg) ship- ping weight.

Crown’s Three-Year, No-Fault, Fully Transferable Warranty

Crown offers a Three-Year, No-Fault, Fully Transferable Warranty for every new Crown ampli-

ﬁer—an unsurpassed industry standard. With this unprecedented No-Fault protection, your new Crown ampliﬁer is warranted to meet or exceed original speciﬁcations for the ﬁrst three years of ownership. During this time, if your ampliﬁer fails, or does not perform to original speciﬁcations, it will be repaired or replaced at our expense. About the only things not covered by this warranty are those losses normally covered by insurance and those caused by intentional abuse. And the coverage is transferable, should you sell your ampliﬁer.

See your authorized Crown dealer for full warranty disclosure and details. For customers outside of the USA, please contact your authorized Crown distributor for warranty information or call 219-294-8200.

Crown International

P.O. Box 1000

Elkhart, IN 46515-1000

TEL: 219-294-8200

FAX: 219-294-8FAX

www.crownaudio.com

Speciﬁcations subject to change without prior notice. Latest infor- mation available at www.crownaudio.com.

Crown, IOC, ODEP and Grounded Bridge are registered trademarks of Crown International. Other trademarks are the property of their respective owners. Printed in U.S.A.

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Crown Audio PT 1.1 specifications Crown’s Three-Year, No-Fault, Fully Transferable Warranty

Models: PT 1.1