Crown Audio SR-II specifications Features, Specifications, Power, Performance

Page 1

Studio Reference I Studio Reference II

The stunning realism you will experience when listening to a Crown® Studio Refer- ence™ amplifier will redefine your expec-

tations. The evolution of this studio standard ushers in a new era of powerful, ultraquiet amplifiers capable of faithfully reproducing the most demanding of signals. This kind of sonic integrity does not happen accidentally. It demands the leadership and technical excel- lence for which Crown has long been known.

With the best transfer function in the industry, ultra-high dynamic range and extraordinary damping factor, your Studio Reference amplifier comes closer to the ideal “straight wire with gain” than any other amplifier. As you listen,

it will become apparent—the amplifier’s low- frequency transient response is the standard by which all others must be judged.

Studio Reference amplifiers integrate several cutting edge technologies that make them the most accurate reference amplifiers available. For example, in Stereo mode each channel can actually be treated as a separate amplifier because of its separate high-voltage power sup- plies and ultra-low crosstalk.

Crown’s unconventional Grounded Bridge™ cir- cuitry delivers incredible voltage swings with-

S T U D I O R E F E R E N C E S E R I E S

fi

Features

• Patented ODEP® (Output Device Emulation

• Ultra-high damping factor delivers superior

 

Protection) circuitry detects and compen-

loudspeaker motion control for the cleanest,

 

sates for overheating and overload to keep

tightest bottom end you’ve ever felt—or

 

the amplifier working when others would

heard.

 

fail.

• Super-low harmonic and intermodulation

•

IOC® (Input/Output Comparator) circuitry

distortion give your amplifier the best transfer

 

immediately alerts you of any distortion that

function in the business.

 

exceeds 0.05% to provide dynamic proof of

• Two mono modes (Bridge-Mono and Parallel-

 

distortion-free performance.

 

Mono) for driving a wide range of load imped-

•

PIP™ (Programmable Input Processor) con-

ances.

 

nector accepts accessories that tailor your

• Custom-designed, tape-wound, low-noise

 

amplifier to suit specific applications.

 

toroidal supplies with extremely high power

•

Extremely wide dynamic range.

density.

out using stressful output transistor configu- rations like other more traditional amplifiers. This results in significantly lower distortion and superior reliability.

For more details about the Studio Reference I and Studio Reference II, contact the Crown Technical Support Group at 800-342-6939 or 574-294-8200. Also, visit the Crown Audio website at www.crownaudio.com.

Specifications

The following apply to units in dual mode with both channels driven into 8 ohm loads and an input sensitivity of 26 dB gain unless otherwise specified.

Power

Output Power: See power charts below.

Studio Reference I Power

 

*1 kHz

4 ohm Stereo (per channel)

1,160W

8 ohm Stereo (per channel)

780W

8 ohm Bridge-Mono

2,220W

16 ohm Bridge-Mono

1,580W

2 ohm Parallel-Mono

2,315W

4 ohm Parallel-Mono

1,565W

*1 kHz Power: refers to maximum average power in watts at 1 kHz with 0.05% THD.

Performance

Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1watt.

Phase Response: +5 to –15 degrees from 20 Hz to 20 kHz at 1 watt.

Signal-to-Noise (A-weighted) below rated full bandwidth power: Studio Reference I: 120 dB. Studio Reference II: 117 dB.

Total Harmonic Distortion (THD): Less than 0.1% at full bandwidth power.

Intermodulation Distortion (IMD): (60 Hz and

7 kHz 4:1)

Studio Reference I: < 0.005% from full bandwidth power to 78 watts, rising linearly to 0.025% at 78 milliwatts.

Studio Reference II *1 kHz

Power

4 ohm Stereo (per channel)

555W

8 ohm Stereo (per channel)

355W

8 ohm Bridge-Mono

1,100W

16 ohm Bridge-Mono

715W

2 ohm Parallel-Mono

1,115W

4 ohm Parallel-Mono

710W

*1 kHz Power: refers to maximum average power in watts at 1 kHz with 0.05% THD.

Studio Reference II: < 0.005% from full bandwidth power to 36 watts rising linearly to 0.025% at 36 milliwatts.

Crosstalk (below rated full bandwidth power):

Studio Reference I: >100 dB from 20 Hz to 400 Hz and >70 dB at 20 kHz. Studio Reference II: >100 dB from 20 Hz to 400 Hz and >65 dB at 20 kHz.

Damping Factor: >20,000 from 10 Hz to 400 Hz.

Voltage Gain (at the maximum level setting):

Studio Reference I:

103:1 ± 6% or 40 dB ±0.5 dB at 0.775 volt sensitivity.

57:1 ± 6% or 35 dB ± 0.5 dB at 1.4 volt sensitivity.

20:1 ± 6% at 26 dB gain ± 0.5 dB.

Studio Reference II:

69:1 ± 6% or 37 dB ± 0.5 dB at 0.775 volt sensitivity.

38:1 ± 6% or 32 dB ± 0.5 dB at 1.4 volt sensitivity.

20:1 ± 6% at 26 dB gain ± 0.5 dB

Load Impedance: Safe with all types of loads. 4-8 ohms in Stereo mode, 8-16 ohms in Bridge-mono mode, and 2-4 ohms in Parallel- Mono mode.

AC Line Voltage and Frequency Configurations Available (± 10%): 50 or 60 Hz; 100, 120, 200, 220 or 240VAC. Power draw at idle is 90 watts or less.

Page 1 Page 2
Image 1
Page 1 Page 2
Contents Power FeaturesSpecifications PerformanceCrown’s Three-Year, No-Fault, Fully Transferable Warranty

SR-II, SR-I specifications

Crown Audio, a respected name in the professional audio world, has made significant strides with the launch of its SR-I and SR-II series amplifiers. These amplifiers are celebrated for their advanced technology, high performance, and versatility in varied sound reinforcement applications.

The Crown SR-I and SR-II amplifiers are engineered to deliver robust power and reliability, making them perfect for live events, theaters, and fixed installations. One of the defining features of these amplifiers is their exceptional power output, providing clear and dynamic sound across a wide frequency range. The SR-I series typically provides an output power of up to 6000 watts, while the SR-II amplifiers push this to an impressive 8000 watts.

One of the standout technologies incorporated into these models is the patented DriveCore technology. This innovative approach significantly reduces the size and weight of the amplifiers while enhancing their efficiency and thermal performance. DriveCore combines power amplification and signal processing into a single compact solution, leading to a cleaner and more efficient audio output with minimal distortion.

In addition to DriveCore, these amplifiers feature advanced protection circuitry. This ensures that they operate safely by preventing damage from overheating, short circuits, or overload conditions. The SR-I and SR-II amplifiers come equipped with comprehensive monitoring capabilities, allowing users to keep track of performance parameters in real-time.

User-friendliness is another crucial characteristic of the Crown SR series. Both amplifiers integrate easily into existing systems with a variety of input and output options, including analog and digital. The intuitive front-panel design includes an LCD display for simplified navigation through settings and monitoring, enhancing usability for sound engineers in dynamic environments.

Moreover, the SR-I and SR-II series are built to withstand demanding conditions. Their rugged construction and advanced thermal management make them reliable choices for extended use, ensuring consistent performance in various settings.

In summary, the Crown Audio SR-I and SR-II amplifiers represent a pinnacle of audio technology, designed to meet the high expectations of professionals in the audio industry. With their powerful output, innovative DriveCore technology, comprehensive protection, and user-friendly interface, these amplifiers redefine what audio amplification can achieve. Whether for large venues or critical installations, the SR series stands out as a premier choice for sound reinforcement solutions.
Top Page Image Contents