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K1
K SERIES
K
-Series amplifi ers deliver more power
and sound while using less energy than
conventional amplifi ers. And it’s all in a
durable, maintenance-free package that’s just
two rack spaces high.
Using patented Balanced Current Amplifi er
(BCA
®
) circuitry, Crown
®
K-Series amplifi ers
give you massive amounts of power while gen-
erating just one-tenth the heat of conventional
amplifi ers. In fact, the powerful K2
®
amplifi er
can deliver an amazing 1,250 watts per channel
into 2 ohms (and that’s a very solid 2 ohms)!
Because of their incredible effi ciency, K-Series
amplifi ers require no internal cooling fan
and feature a closed chassis. Of course, no
fan means no fan noise. In addition, the
closed chassis makes these amplifi ers virtually
immune to environmental problems such as
dust, cigarette smoke, stage fog and spilled liq-
uids. In practical, everyday terms, the K-Series
amplifi ers are essentially maintenance-free. As
with all convection-cooled amplifi ers, varying
operating levels and loads may require addi-
tional air movement in high ambient tempera-
ture conditions.
K-Series amplifi ers are so energy effi cient—
more than twice that of conventional switching
amps—they require signifi cantly less energy to
deliver their massive power into virtually any
load, no matter how diffi cult. In addition, each
amplifi er is equipped with a “green” circuit
that further reduces energy use during idle
periods. Energy draw is so low—only 12 watts
or less—the amplifi er may be kept in a con-
tinual ready state at minimal cost. This effi -
ciency means you’ll realize signifi cant savings
over the life of the amplifi er, reducing the
cost of ownership, as well as enabling more
K-Series amplifi ers to be plugged into a single
AC circuit, reducing installation costs.
Best of all, the K Series delivers all of the supe-
rior sound that Crown is known for—tight,
chest-slamming low end, crystal-clear highs
and a well-defi ned midrange. Several excep-
tional product reviews concur that the K Series
delivers fantastic sound.
The K Series stands above the rest as the per-
formance leader in convection-cooled designs.
For more details about the Crown K Series,
contact the Crown Technical Support Group at
800-342-6939 or 574-294-8200. Also, visit the
Crown Audio website at www.crownaudio.com.
Specifi cations
The following applies to 120-VAC, 60-Hz units in Stereo mode
with 8-ohm loads and an input sensitivity of 26 dB gain
unless otherwise specifi ed. Specifi cations for units supplied
outside the U.S.A. may vary slightly at different AC voltages
and frequencies.
Power
Output Power: See power charts below.
Voltage Gain:
K1: 31.55 dB gain at 1.4 volt sensitivity;
26 dB gain at 2.65 volt sensitivity.
K2: 32.88 dB gain at 1.4 volt sensitivity;
25 dB gain at 3.0 volt sensitivity.
Line Voltage Requirements: Universal power
supply can be confi gured to operate with
100,120, 200, 220, 230, 240, 250VAC at 50
or 60 Hz. Adapters are acquired through an
Authorized Service Center.
Performance
Frequency Response: ±0.25 dB from 20 Hz to
20 kHz. The frequency response is band limited
with an 8 Hz double-integrated 3rd-order But-
terworth high-pass fi lter and a 30 kHz 7th-order
Gaussian low-pass fi lter.
Signal to Noise (A-weighted): > 100 dB below
rated power.
Damping Factor: > 3,000 from 10 to 400 Hz.
Controls
Level: A calibrated rotary level control for each
channel located on the front panel.
Power: An on/off rocker switch located on the
front panel.
Input Sensitivity: A two-position switch for
each channel located on the back panel near
each channel’s input connectors.
Bridge Output: An on/off switch located on
the back panel between the input connectors
which, when turned on, bridges the two output
channels for twice the output voltage.
Features
• Accurate, uncolored sound with very low
distortion for the best in music and voice
reproduction
• High damping factor for tight, clean bass
response
• Advanced design for energy conservation
• Mono mode switches allow you to set up your
amps/speakers in the confi guration that best
suits your needs—with combined amp inputs,
combined amp outputs, or both.
• Advanced protection circuitry guards against:
shorted outputs, open circuits, DC, mis-
matched loads, general overheating,high-fre-
quency overloads and internal faults
• Extremely versatile, handling a wide range of
speaker impedances and outputs
• Exclusive BCA
®
(Balanced Current Amplifi er)
power design provides super efficiency for
quiet, fan-free operation
• Switchable input sensitivity
• “Soft start” feature prevents the K-Series ampli-
fi er from drawing large currents when it is fi rst
turned on so you don’t need to delay power-on
of your amps
• Uniquely molded, cast-aluminum front panel
provides exceptional air circulation for your K-
Series amplifi er
• Three-year, No-Fault, Fully Transferable War-
ranty completely protects your investment and
guarantees its specifi cations
8 ohm Stereo (per channel)
1 kHz
Power
350W
550W
750W
1,100W
1,500W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
K1
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% or less TRUE THD.
*
8 ohm Stereo (per channel)
1 kHz
Power
500W
800W
1,250W
1,600W
2,500W
4 ohm Bridge-Mono
8 ohm Bridge-Mono
2 ohm Stereo (per channel)
4 ohm Stereo (per channel)
K2
*1 kHz Power: refers to maximum average power in watts
at 1 kHz with 0.1% or less TRUE THD.
*
K2