Crown PIP-AMC Technical Information

K80636-23/95®CommercialAudioLL 32521C®Fire ProtectiveSignalingS5206®CommercialAudioE106377120 VACNorthAmericanUnits:Approved forTHX TheatreSystems(CT-

Page 10Com-Tech 200/400/800/1600 Power Amplifiers3 InstallationThis section covers basic Com-Tech installation pro-cedures. If your amplifier will b

Page 11Com-Tech 200/400/800/1600 Power Amplifiersthan 400 btu (100 kcal) per hour per unit will need ad-ditional cooling. If you want to test your am

Page 12Com-Tech 200/400/800/1600 Power Amplifiersducing the temperature of the air circulated throughthe rack. If you intend to install air condition

Page 13Com-Tech 200/400/800/1600 Power Amplifiersthis, the input sensitivity should be set to 0.775 volts for70 volt output (see Section 4.4). Again,

Page 14Com-Tech 200/400/800/1600 Power Amplifiers140 volt distributed loudspeaker systems. If you will beusing 140 volt output, you may need to cross

Page 15Com-Tech 200/400/800/1600 Power AmplifiersFig. 3.6 Wiring for Bridge-Mono 70 Volt Mode (140 Volt Output)COM+–+140 VOLT STEP-DOWNTRANSFORMERS1

Page 16Com-Tech 200/400/800/1600 Power AmplifiersCOM+–+70 VOLT STEP-DOWNTRANSFORMERS16, 8, OR 4 OHM16, 8, OR 4 OHM70 VOLT LINEMIXERCom-Tech Amplifier

Page 17Com-Tech 200/400/800/1600 Power Amplifierstween the positive (+) terminals of both channels.CAUTION: When Parallel-Mono wiring is installed, d

Page 18Com-Tech 200/400/800/1600 Power Amplifiers4 kHz 10 kHz 40 kHz 100 kHzFrequencydB0–10–20ABC6 dB/octave12 dB/octaveToAmpGNDToAmpGNDToAmpGNDSourc

Page 19Com-Tech 200/400/800/1600 Power Amplifiers403020151098765432125102050100.04.06.1.2.4.612461020405102050121002005001000200050008000500010005001

WORLDWIDESUMMARY OF WARRANTYThe Crown Audio Division of Crown International, Inc., 1718 WestMishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrant

Page 20Com-Tech 200/400/800/1600 Power Amplifiersdamping factor is the value on the “Annealed Copper Wire”line. Note: Wire size increases as the AWG

Page 21Com-Tech 200/400/800/1600 Power Amplifiersmechanical damage from large transient voltages. Inboth cases, special fuses may be used to protect

Page 22Com-Tech 200/400/800/1600 Power Amplifiers4 Operation4.1 PrecautionsAlthough your amplifier is protected from internal andexternal faults, yo

Page 23Com-Tech 200/400/800/1600 Power Amplifiers4.3 Protection SystemsCom-Tech amplifiers provide extensive protection anddiagnostics capabilities.

Page 24Com-Tech 200/400/800/1600 Power Amplifierspresent conditions, ODEP immediately limits the drivelevel until it falls within the SOA. Limiting i

Page 25Com-Tech 200/400/800/1600 Power Amplifierslike when the amplifier is used to drive a 1 ohm load, orwhen an input signal is clipped severely.4.

Page 26Com-Tech 200/400/800/1600 Power Amplifiers5 Technical Information5.1 OverviewCom-Tech amplifiers incorporate several new techno-logical advan

Page 27Com-Tech 200/400/800/1600 Power AmplifiersFAULTONLY ONE CHANNEL SHOWNNPN HIOUTPUTSTAGENPN LOWOUTPUTSTAGEPNP LOWOUTPUTSTAGEPNP HIOUTPUTSTAGE+OU

Page 28Com-Tech 200/400/800/1600 Power Amplifierssitivity switch and the back panel level control. The er-ror amp (U104-C) amplifies the difference b

Page 29Com-Tech 200/400/800/1600 Power Amplifiers®CommercialAudioLL 32521C®Fire ProtectiveSignalingS5206®CommercialAudioE106377120 VACNorthAmericanUn

TO PREVENT ELECTRIC SHOCK DONOT REMOVE TOP OR BOTTOMCOVERS. NO USER SERVICEABLEPARTS INSIDE. REFER SERVICINGTO QUALIFIED SERVICE PERSON-NEL. DISCONNEC

Page 30Com-Tech 200/400/800/1600 Power AmplifiersControlsEnable: A front panel rocker switch used to turn theamplifier on and off.Level: A detented 2

Page 31Com-Tech 200/400/800/1600 Power Amplifiersterminal connections for each output channel.Output Impedance: Less than 10 milliohms in serieswith

Page 32Com-Tech 200/400/800/1600 Power AmplifiersCrown specifications are guaranteed for three years.In an effort to provide you with as much informa

Page 33Com-Tech 200/400/800/1600 Power AmplifiersFig. 6.2 Com-Tech 400 Minimum Power MatrixCom-Tech 400 – Minimum Guaranteed Power (Watts)Dual/MonoM

Page 34Com-Tech 200/400/800/1600 Power AmplifiersFig. 6.3 Com-Tech 800 Minimum Power MatrixCom-Tech 800 – Minimum Guaranteed Power (Watts)Dual/MonoM

Page 35Com-Tech 200/400/800/1600 Power AmplifiersFig. 6.4 Com-Tech 1600 Minimum Power MatrixCom-Tech 1600 – Minimum Guaranteed Power (Watts)Dual/Mon

Page 36Com-Tech 200/400/800/1600 Power AmplifiersMaximum Power SpecificationsCrown’s maximum power specifications represent the largest amount of out

Page 37Com-Tech 200/400/800/1600 Power Amplifiers25 (70V)4Dual(both channelsdriven)Bridge-Mono(balanced output)Parallel-Mono250 (140V)812.5 (70V)3152

Page 38Com-Tech 200/400/800/1600 Power Amplifiers12.5 (70V)4Dual(both channelsdriven)Bridge-Mono(balanced output)Parallel-Mono225 (140V)86.25 (70V)47

Page 39Com-Tech 200/400/800/1600 Power Amplifiers6.25 (70V)4Dual(both channelsdriven)Bridge-Mono(balanced output)Parallel-Mono212.5 (140V)83.13 (70V)

Page 4Com-Tech 200/400/800/1600 Power AmplifiersCONTENTS1 Welcome ... 71.1 Un

Page 40Com-Tech 200/400/800/1600 Power Amplifiers10 100 1 K 10 K 100 KFREQUENCY (Hz)+2+10–1–2–3–4dB–5–6–74 ohm8 ohm1 watt504.0126.831.8MILLIOHMS8.02.

Page 41Com-Tech 200/400/800/1600 Power AmplifiersTECHRON TEF®+45˚0˚–45˚100 1 K 10 K 20 KFREQUENCY (Hz)100 1 K 10 K 20 KFREQUENCY (Hz)dBTECHRON TEF®–6

Page 42Com-Tech 200/400/800/1600 Power Amplifiers7 AC Power Draw and Thermal DissipationThis section provides detailed information about theamount

Page 43Com-Tech 200/400/800/1600 Power AmplifiersFig. 7.2 Com-Tech 400 Power Draw, Current Draw and Thermal Dissipation at Various Duty CyclesFig. 7

Page 44Com-Tech 200/400/800/1600 Power Amplifiers8 Accessories8.1 P.I.P. ModulesOne advantage of Com-Tech amplifiers is the ability tocustomize them

Page 45Com-Tech 200/400/800/1600 Power AmplifiersISOProgrammableInput Processor (P.I.P.)—WARNING—THIS P.I.P. PROVIDES FULL ISOLATIONFOR ISO-MODIFIED

Page 46Com-Tech 200/400/800/1600 Power Amplifiers8.2 Com-Tech 200 Cooling FanA three-speed cooling fan (part GCT200FAN) is avail-able for North Ameri

Page 47Com-Tech 200/400/800/1600 Power Amplifiers9 Fire Protective SignalingSome installations are required to have an emergencypublic address system

Page 48Com-Tech 200/400/800/1600 Power Amplifiers10 ServiceThis unit has very sophisticated circuitry which shouldonly be serviced by a fully trained

Page 49Com-Tech 200/400/800/1600 Power AmplifiersCrown Factory Service InformationShipping Address: Crown International, Inc., Factory Service, 57620

Page 5Com-Tech 200/400/800/1600 Power AmplifiersILLUSTRATIONS1.1Com-Tech Amplifiers (120 VAC, 60 Hz Units)... 62.1 Front Faci

Page 6Com-Tech 200/400/800/1600 Power AmplifiersFig. 1.1 Com-Tech Amplifiers (120 VAC, 60 Hz Units)POWERODEPIOCSPIENABLECH1 CH2OFFPOWERODEPIOCSPIENA

Page 7Com-Tech 200/400/800/1600 Power Amplifiers1 WelcomeCongratulations on your purchase of a Com-Tech®commercial power amplifier. The Com-Tech seri

Page 8Com-Tech 200/400/800/1600 Power Amplifiers2 FacilitiesA. Filter GrilleA metal grille supports and protects the dust filter (B).To clean the du

Page 9Com-Tech 200/400/800/1600 Power AmplifiersFig. 2.2 Rear FacilitiesI. Reset SwitchThis reset switch is used to reset the circuit breakerthat pr