S T U D I O R E F E R E N C E S E R I E S
Studio Reference I
Studio Reference II
fi
he stunning realism you will experience
when listening to a Crown® Studio Refer-
T
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.
Features
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.
•
Patented ODEP® (Output Device Emulation
Protection) circuitry detects and compen-
sates for overheating and overload to keep
the amplifier working when others would
fail.
•
Ultra-high damping factor delivers superior
loudspeaker motion control for the cleanest,
tightest bottom end you’ve ever felt—or
heard.
•
•
•
Super-low harmonic and intermodulation
distortion give your amplifier the best transfer
function in the business.
•
•
IOC® (Input/Output Comparator) circuitry
immediately alerts you of any distortion that
exceeds 0.05% to provide dynamic proof of
distortion-free performance.
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.
Two mono modes (Bridge-Mono and Parallel-
Mono) for driving a wide range of load imped-
ances.
PIP™ (Programmable Input Processor) con-
nector accepts accessories that tailor your
amplifier to suit specific applications.
Custom-designed, tape-wound, low-noise
toroidal supplies with extremely high power
density.
• Extremely wide dynamic range.
Crown’s unconventional Grounded Bridge™ cir-
cuitry delivers incredible voltage swings with-
out using stressful output transistor configu-
rations like other more traditional amplifiers.
This results in significantly lower distortion and
superior reliability.
Studio Reference II: < 0.005% from full
bandwidth power to 36 watts rising linearly
to 0.025% at 36 milliwatts.
Performance
Frequency Response: 0.1 dB from 20 Hz to
20 kHz at 1watt.
Crosstalk (below rated full bandwidth power):
Phase Response: +5 to –15 degrees from 20
Hz to 20 kHz at 1 watt.
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
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.
Signal-to-Noise (A-weighted) below rated full
bandwidth power: Studio Reference I: 120 dB.
Studio Reference II: 117 dB.
Damping Factor: >20,000 from 10 Hz to 400
Hz.
Total Harmonic Distortion (THD): Less than
0.1% at full bandwidth power.
Specifications
Voltage Gain (at the maximum level setting):
Intermodulation Distortion (IMD): (60 Hz and
7 kHz 4:1)
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.
Studio Reference I:
103:1 6% or 40 dB 0.5 dB at
0.775 volt sensitivity.
Studio Reference I: < 0.005% from full
bandwidth power to 78 watts, rising
linearly to 0.025% at 78 milliwatts.
Power
57:1 6% or 35 dB 0.5 dB at
1.4 volt sensitivity.
Output Power: See power charts below.
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.
*1 kHz
Studio Reference I
Power
*1 kHz
Power
Studio Reference II
4 ohm Stereo (per channel)
8 ohm Stereo (per channel)
8 ohm Bridge-Mono
1,160W
780W
2,220W
1,580W
2,315W
555W
355W
1,100W
715W
4 ohm Stereo (per channel)
8 ohm Stereo (per channel)
8 ohm Bridge-Mono
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.
16 ohm Bridge-Mono
2 ohm Parallel-Mono
16 ohm Bridge-Mono
2 ohm Parallel-Mono
1,115W
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.
1,565W
710W
4 ohm Parallel-Mono
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.05% THD.
4 ohm Parallel-Mono
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.05% THD.
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