Crown Audio SR-I Leaflet

he stunning realism you will experience 
when listening to a Crown

®

 Studio Refer-

ence™ amplifi er will redefi ne your expec-

tations. The evolution of this studio standard 
ushers in a new era of powerful, ultraquiet 
amplifi ers 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 amplifi er 
comes closer to the ideal “straight wire with 
gain” than any other amplifi er. As you listen, 
it will become apparent—the amplifi er’s low-
frequency transient response is the standard by 
which all others must be judged.

Studio Reference amplifi ers integrate several 
cutting edge technologies that make them the 
most accurate reference amplifi ers available. 
For example, in Stereo mode each channel 
can actually be treated as a separate amplifi er 
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-
out using stressful output transistor confi gu-
rations like other more traditional amplifi ers. 
This results in signifi cantly 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.

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 specifi ed.

Output Power: See power charts below.

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) 

I: < 0.005% from full 

bandwidth power to 78 watts, rising 
linearly to 0.025% at 78 milliwatts. 

II: < 0.005% from full 

bandwidth power to 36 watts rising linearly 
to 0.025% at 36 milliwatts.

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):

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.

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 Confi gurations 
Available (± 10%): 50 or 60 Hz; 100, 120, 200, 
220 or 240VAC. Power draw at idle is 90 watts 
or less.

fi

8 ohm Bridge-Mono

*1 kHz
 Power

16 ohm Bridge-Mono

2 ohm Parallel-Mono

4 ohm Stereo (per channel)

8 ohm Stereo (per channel)

4 ohm Parallel-Mono

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

8 ohm Bridge-Mono

*1 kHz
 Power

16 ohm Bridge-Mono

2 ohm Parallel-Mono

4 ohm Stereo (per channel)

8 ohm Stereo (per channel)

4 ohm Parallel-Mono

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