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Crown International
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: 574-294-8200
FAX: 574-294-8FAX
Customer Service: 800-342-6939
or 574-294-8200.
www.crownaudio.com
4/08 140535-2
Specifi cations
Performance
Frequency Response (at 1 watt, 20 Hz - 20 kHz
into 8 ohms): ±0.25 dB.
Signal to Noise Ratio (below rated full-bandwidth
power, A-weighted): > 110 dB.
Total Harmonic Distortion (THD) (at 2 watts into 8
ohms): < 0.1%.
Total Harmonic Distortion (THD) Plus Noise (at
full rated power): < 0.35%, 20 Hz to 20 kHz.
Intermodulation Distortion (IMD) (60 Hz and 7
kHz at 4:1, from full rated output to –30 dB):
< 0.35%.
Damping Factor (20 Hz to 100 Hz at 8 ohms):
> 5000.
Crosstalk (below rated power, 20 Hz to 1 kHz):
> 80 dB.
Common Mode Rejection (CMR) (20 Hz to 1
kHz): 55 dB, typically >70 dB.
DC Output Offset (shorted input): < ± 3 mV.
Input Impedance (nominal): 10 kilohms balanced,
5 kilohms unbalanced.
Maximum Input Level: +20 dBu typical.
Network: Onboard HiQnet™, compatible with
standard 100 Mb Ethercom hardware.
Load Impedance: (Note: Safe with all types of
loads)
Stereo: 1/2/4/8/16 ohms.
Bridge Mono: 2/4/8 ohms.
Input Sensitivity (referenced to 8 ohm rated
output): 1.4V, 32 dB gain, and 26 dB gain.
Voltage Gain (referenced to 8 ohm rated output):
MA-5000i: 37.1 dB to 22.2 dB
MA-9000i: 37.9 dB to 23.0 dB
MA-12000i: 39.3 dB to 24.5 dB
Required AC Mains: Universal AC input, 100-
240VAC, 50/60 Hz (±10%). Maximum AC mains
voltage 264VAC.
AC Line Connector: Five cordsets supplied with
amplifi er (USA, UK, European, Australia, India).
Front Panel Controls and Indicators
Bridge Mode Indicator: Amber LED illuminates
when the amplifi er is set to Bridge-Mono mode.
Ready Indicator: Green LED, one per channel.
On (bright): Ready.
On (dim): Onset of compression.
Off: Thermal failure.
Signal Indicators: One green LED per channel.
Solid green: Input signal is above –40 dBu.
Bright green: Channel’s output signal has reached
the onset of audible clipping.
Power Indicator: Blue LED indicates amplifi er has
been turned on and AC power is available. The
LED will fl ash when the AC line voltage is 10%
above or below the nominal rated value.
Data Indicator: Yellow LED on front panel indi-
cates network data activity. Data indicator fl ashes
only when the amplifi er is polled for data, or is
polled to see whether it is online
Power Switch: Push-on/push-off switch with
built-in green AC mains present indicator.
Volume Control: Precision detented attenuator
with 31 steps, press-and-hold mute function.
Volume Control LED Ring: A ring of green LEDs
around each volume control show the position of
the control. Entire ring fl ashes when channel is
muted. Can be converted to be a level meter.
Back Panel Controls, Indicators and Con-
nectors
Power Cord Connector: Detachable 20 amp IEC
inlet. Cord locks with supplied cord retention clip.
Voltage range is indicated above IEC inlet.
Reset Switch/Circuit Breaker: If the current draw
of the amplifi er exceeds safe limits, this breaker
automatically disconnects the power supply
from the AC mains. The switch resets the circuit
breaker.
Output Connectors: Two high-current, 50A Neu-
trik
®
Speakon
®
NL4MLP (mates with NL4FC or
NL4), one per channel. Ch 1 Speakon
®
is wired
with Ch 1 and Ch 2 outputs for use with single
4-conductor cable. Two pairs of high-current,
60A color-coded 5-way binding posts (for banana
plugs, spade lugs or bare wire).
Analog Input Connectors: A 3-pin female XLR
connector for each channel.
Analog Loop Thru Connectors: Two male XLR
passive analog loop through.
Mode Switch/Indicator: Sets amplifi er to Stereo,
Bridge, or Input Y mode. OFF=Stereo, YEL=Bridge,
GRN=Y.
Network Connector: This Neutrik
®
Ethercon con-
nector accepts an RJ-45 connector for HiQnet™
networking. Next to the connector is a yellow
LINK ACT indicator that shows network activity,
and a green 100Mb indicator that shows a 100Mb
network connection.
Data Indicator: Yellow LED on back panel indi-
cates network data activity. Data indicator fl ashes
only when the amplifi er is polled for data, or is
polled to see whether it is online.
Preset Indicator: Green/yellow LED fl ashes to
signal the number of the current preset. LED is
green if current preset is active, or is yellow if cur-
rent preset is modifi ed.
Input Sensitivity Switch: Three-position switch
providing 1.4V, 32 dB, and 26 dB settings for both
channels.
Firmware/Software
Firmware can be updated at www.crownaudio.com
> Support > Downloads.
Software features: User Presets, Clip Event
Monitor, Input Signal Level Monitor, Output Signal
Level Monitor, Thermal Headroom Level Monitor,
Power/Standby Control, Signal Mute, Polarity
Inverter, Input Signal Fader, Dynamic Gain Moni-
tors (Ghost Faders), Amplifi er Information, User
and Channel Labels, Amplifi er Mode, Amplifi er
Output Mode, Line Voltage Monitor, Error Report-
ing, Auto Standby, Input Signal Compressor/Lim-
iter, Peak Voltage Limiter, Average Power Limiter,
Clip Eliminator, Thermal Limiter, Limiter Tie, Load
Supervision.
Construction
Cooling: Dual-zone, microprocessor controlled,
continuously variable speed fans, front-to-back
airfl ow.
Front Panel: Cast aluminum with integrated
handles.
Dimensions: 19 in. (48.3 cm) W x 3.5 in. (8.9 cm)
H x 16.2 in. (41.1 cm) D.
Weight: 28 lbs (12.7 kg) net, 36 lbs (16.3 kg)
shipping.
Protection: Amplifi er is protected against reactive
loads, faults and shorts. If one channel experi-
ences a catastrophic failure, the entire amplifi er
will shut down.
Included Accessories: Rear rack ears, rack
screws, operation manual, power cords, foam air
fi lter.
Note: All measurements apply to units in Stereo mode
with 8-ohm loads and rated input sensitivity unless oth-
erwise specified.
Specifi cations subject to change without prior notice. Latest
information available at www.crownaudio.com.
Crown, Macro-Tech and Crown Audio are registered
trademarks; HiQnet is a trademark of Crown International.
Other trademarks are the property of their respective owners.
Printed in U.S.A.
© 2008 Crown Audio
®
Inc
Macro-Tech
®
i Series