CAUTION: To prevent electric | | | | |
shock do not remove the top or | | | | |
bottom covers. There are no user | | | | |
serviceable parts inside. Please | | | | |
refer all servicing to qualified | | | | |
service personnel. Disconnect | | | | |
the power cord before removing | | | | |
the P.I.P. module to access the | | | | |
input sensitivity switch inside | | | | |
the amplifier. | | STEREO |
ATTENTION: Débrancher avant | PARALLEL | | | BRIDGE |
d'ouvrir. | | |
WARNING: To reduce the risk | MONO | | | MONO |
| | | |
of fire or electric shock, do not | CAUTION: Turn off the amplifier |
expose this equipment to rain or | before changing this switch! |
moisture. | | | | |
Registered with the U.S. Patent Office.
4,330,809
4,611,180
Designed and constructed by the Professional Audio Division of Crown International, Inc. 1718 West Mishawaka Rd. Elkhart, Indiana 46517 U.S.A.
FX | C H - 2 | C H - 1 | |
| | |
| PUSH | PUSH | |
Programmable | I N P U T | I N P U T | 3 |
GND 1 2 |
Input Processor (P.I.P.) | | | |
This amplifier is equipped with a selectable input sensitivity. Remove the P.I.P. module to access the sensitivity switch.
BALANCED | CH-2 | | | | CH-1 | UNBALANCED |
INPUT WIRING | | | | | | INPUT WIRING |
+ TIP | | | | | | + TIP |
– RING | | INPUT GROUND LIFT | | |
GND SLEEVE | | LIFT | | | (MONO) | GND SLEEVE |
| | | | | | |
(AFFECTS PHONE INPUTS ONLY.)
| | | | | | |
| CH-2 | | CH-1 | | |
| Class 1 output wiring is required. | | |
BRIDGE-MONO OUTPUT WIRING | PARALLEL-MONO OUTPUT WIRING |
1 | Turn the amplifier off. | | 1 | Turn the amplifier off. | |
2 | Set the Stereo/Mono | – | 2 | Set the Stereo/Mono | – |
| switch to Bridge-Mono. | | | switch to Parallel-Mono. | |
3 | Output across the | + | 3 | Add jumper (14+ gage) | + |
| “+” terminals only. | | | across “+” terminals. | |
| Ch-1 is positive. | | 4 | Output across the | |
| | | | Ch-1 terminals only. | |
| | | Model: Reference 1 | | |
| | | 50/60 Hz AC Volts: 120 Current: 17.8 Amps |
| | | Maximum Output: 1,160 watts per channel |
| | | into 4 ohms at 1 kHz with no more than 0.02% |
| | | THD (in Stereo mode). | | |
| | | Model: Reference 2 | ® INTERNATIONAL, INC. |
| | | 50/60 Hz ELECTRONICAC Volts: 120EQUIPMENTCurrent: 8.8 Amps |
| | | MaximumELKHART,Output:IN 46517 560 watts per channel into |
| | | MADE IN U.S.A. | | 0000 |
| | | 4 ohms at 1 kHz with no more than 0.02% THD |
| | | SERIAL NUMBER | 000000 | |
| | | (in Stereo mode). | | |
Studio Reference I Studio Reference II
Controls
Power: A two-position front panel pushbutton on/off switch. Four-second turn-on delay.
Level: An independent 31-position detented front-panel level control for each channel.
Reset Switch: This back panel switch can be used to trip and reset the AC mains circuit breaker.
Stereo/Mono Switch: Back-panel switch selects between Stereo, Bridge-mono, and Parallel-mono modes.
Ground Lift Switch: The input signal ground may be isolated from the AC ground with this back-panel switch to help prevent unwanted ground loops. It affects only the phone jacks. It has no effect on the PIP module’s XLR connectors. Activating the switch inserts an impedance between the sleeve of each phone input jack and the circuit ground.
Input Sensitivity Switch: The three-position input sensitivity switch inside the amplifier can be accessed by removing the PIP module. Settings include 0.775 volts and 1.4 volts for rated output, and 26 dB voltage gain.
Meter Switches: Two switches behind the front panel can make the output meters dis- play either the dynamic range of the output signal in dB (factory default), or the output level in dB.
Indicators
Signal Presence: The green front panel indi- cator for each channel flashes synchronously with the channel’s output signal to indicate its presence.
Enable Indicator: This indicator lights when the amplifier has been “enabled” or turned on, and AC power is available.
ODEP Indicators: During normal operation of the amplifier, the ODEP (Output Device Emu- lation Protection) indicators glow brightly to show the presence of reserve thermodynamic energy. They dim proportionally as energy reserves decrease. In the rare event that energy reserves are depleted, the indicators turn off and ODEP proportionally limits the output drive so the amplifier can safely continue operating even under severe conditions. These indicators also help to identify more unusual operating conditions.
Input/Output Comparator: The red Input/Output Comparator (IOC) indicator for each channel flashes if any type of distortion reaches 0.05%.
Dynamic Range/Level Meters: A five-segment output meter is provided for each channel. The meters are factory-set to show dynamic range of the signals in dB, which is computed as the ratio of peak to average output power. Also, the meter can optionally be set to show output levels.
Input/Output
Input Connectors: Balanced ¼-inch(6.35-mm) phone jack for each channel. Balanced three- pin female XLR connector on the PIP-FX for each channel.
Input Impedance: Nominally 10 k ohms, bal- anced. Nominally 5 k ohms, unbalanced.
Input Sensitivity: Configurable for 26 dB gain, 0.775 volt sensitivity, or 1.4 volt sensitivity.
Output Connector: Two pairs of versatile 5-way binding posts are provided for the output of each channel so multiple loudspeakers can be connected easily. They accept banana plugs, spade lugs or bare wire.
Output Impedance: <10 milliohms in series with 2.5 microhenries.
DC Output Offset: ± 2 millivolts.
Output Signal
Dual: Unbalanced, two channel.
Bridge-Mono:Balanced, single channel. Chan- nel 1 controls are active; channel 2 controls should be turned down.
Parallel-Mono:Balanced, single channel. Channel 1 controls are active; channel 2 con- trols should be turned down.
Protection
Studio Reference amplifiers provide extensive protection and diagnostics capabilities. Protec- tion systems include ODEP, standby mode, an AC circuit breaker and transformer thermal pro- tection. These systems will prevent amplifier damage in virtually any situation. A four-second turn-on delay prevents power-on thumps.
Construction
Durable black finish on aluminum chassis.
Dimensions: EIA Standard 19-inch (48.3-cm) rack mount width (EIA RS-310B), 7 inches (17.8 cm) high and 16 inches (40.6 cm) deep behind mounting surface and 2.75-inch (7-cm) protrusion in front of mounting surface
Net Weight:
Studio Reference I: 60.7 lb (27.6 kg)
Studio Reference II: 56.1 lb (25.5 kg).
Shipping Weight:
Studio Reference I: 74.2 lb (33.7 kg)
Studio Reference II: 69.6 lb (31.6 kg).
Cooling: Flow-through ventilation from front to sides. On-demand proportional speed fan.
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 574-294-8200.
Crown International
P.O. Box 1000
Elkhart, IN 46515-1000
TEL: 574-294-8200
FAX: 574-294-8FAX
www.crownaudio.com
Specifications subject to change without prior notice. Latest information available at www.crownaudio.com.
Grounded Bridge, PIP, and Studio Reference are trademarks, and Crown, ODEP, and IOC are registered trademarks of Crown International. Other trademarks are the property of their respective owners. Printed in U.S.A.
© 2003 Crown Audio, Inc.
